阅读说明：本技术 一种可保护胶筒的油田注水井用封隔器 (Packer capable of protecting rubber cylinder for oil field water injection well ) 是由 李祥宝 于 2021-09-01 设计创作，主要内容包括：本发明涉及封隔器技术领域,尤其涉及一种在放置和取出封隔器的过程中,能够对胶筒进行保护,从而提高胶筒的使用寿命的可保护胶筒的油田注水井用封隔器,包括有第一复位弹簧、活动块、坐封机构、解封机构、阀门机构等；解封机构上设有坐封机构、第一复位弹簧和卸压机构,第一复位弹簧顶部连接有活动块,解封机构与坐封机构之间设有阀门机构,坐封机构与解封机构之间设有防护机构。本发明通过坐封机构中坐封胶筒的变形来对油管和油气井套管进行坐封,从而实现坐封的效果。(The invention relates to the technical field of packers, in particular to a packer capable of protecting a rubber sleeve in the process of placing and taking out the packer, which can protect the rubber sleeve so as to prolong the service life of the rubber sleeve and used for an oil field water injection well, and comprises a first reset spring, a movable block, a setting mechanism, an unsetting mechanism, a valve mechanism and the like; the deblocking mechanism is provided with a setting mechanism, a first reset spring and a pressure relief mechanism, the top of the first reset spring is connected with a movable block, a valve mechanism is arranged between the deblocking mechanism and the setting mechanism, and a protection mechanism is arranged between the setting mechanism and the deblocking mechanism. The setting device sets the oil pipe and the oil-gas well casing through the deformation of the setting rubber cylinder in the setting mechanism, thereby realizing the setting effect.)

1. A packer capable of protecting a rubber sleeve and used for an oil field water injection well comprises a first reset spring (1), a movable block (2), a setting mechanism (3), a deblocking mechanism (4) and a valve mechanism (5), and is characterized by further comprising a pressure relief mechanism (6) and a protection mechanism (7), wherein the setting mechanism (3), the first reset spring (1) and the pressure relief mechanism (6) are arranged on the deblocking mechanism (4), the movable block (2) is connected to the upper end of the first reset spring (1), the valve mechanism (5) is arranged between the deblocking mechanism (4) and the setting mechanism (3), and the protection mechanism (7) is arranged between the setting mechanism (3) and the deblocking mechanism (4);

the protection mechanism (7) comprises a mounting ring (71), push plates (72), fixing rings (73), supporting plates (74), a push ring (75), a connecting plate (76), a second common spring (77), a first protecting plate (78), a mounting plate (79), a fourth reset spring (710), an electromagnetic plate (711), a second protecting plate (712), a second clamping block (713), a connecting spring (714) and a wedge block (715), wherein the mounting ring (71) is connected to the upper part of the outer side of the deblocking mechanism (4), the four push plates (72) are connected to the top of the mounting ring (71) at even intervals along the circumferential direction, the fixing rings (73) are connected to the setting mechanism (3) in a sliding manner, a plurality of supporting plates (74) are connected to the top of the fixing rings (73) at even intervals along the circumferential direction, the push plates (72) are in sliding fit with the fixing rings (73), and the push rings (75) are connected among the plurality of supporting plates (74) in a sliding manner, the push ring (75) is connected with the push plate (72), the push ring (75) is separated from the support plate (74), the connecting plate (76) is placed at the top of the support plate (74), the support plate (74) supports the connecting plate (76), the upper part of the outer side of the connecting plate (76) is connected with two second common springs (77), a first protection plate (78) is connected between the second common springs (77), the first protection plate (78) is in sliding fit with the connecting plate (76), the deblocking mechanism (4) is connected with a mounting plate (79), the bottom of the mounting plate (79) is connected with a fourth reset spring (710), the fourth reset spring (710) is sleeved on the deblocking mechanism (4), the lower end of the fourth reset spring (710) is connected with an electromagnetic plate (711), the electromagnetic plate (711) is connected with a second protection plate (712) in a sliding manner, the second protection plate (712) is made of iron, the electromagnetic plate (711) sucks up the second protection plate (712), four second fixture blocks (713) are connected to the unpacking mechanism (4) in a sliding mode at even intervals in the circumferential direction, wedge blocks (715) are connected to the inner sides of the second fixture blocks (713), connecting springs (714) are connected between the second fixture blocks (713) and the unpacking mechanism (4), the second fixture blocks (713) slide on the electromagnetic plate (711) in the circumferential direction, and the electromagnetic plate (711) is longitudinally clamped by the second fixture blocks (713).

2. The packer capable of protecting the rubber sleeve for the oil field water injection well is characterized in that a deblocking mechanism (4) comprises an upper connector (41), an inner central tube (42), fixing blocks (43), an outer central tube (44), a third connecting block (45) and a lower connector (46), the inner central tube (42) is sleeved in the upper connector (41), a fourth reset spring (710) is sleeved on the upper connector (41), a mounting plate (79) is connected to the upper portion of the outer arc surface of the upper connector (41), the four fixing blocks (43) are uniformly connected to the bottom of the upper connector (41) at intervals in the circumferential direction, the outer central tube (44) is connected between the bottoms of the four fixing blocks (43), the four second clamping blocks (713) are uniformly connected to the upper portion of the outer side of the outer central tube (44) at intervals in the circumferential direction, and the connecting spring (714) is connected between the second clamping blocks (713) and the outer central tube (44), outer center tube (44) cover is in interior center tube (42) outside, outer center tube (44) and the horizontal clearance of interior center tube (42) are for washing the well head on, outer center tube (44) and the fore-and-aft clearance of interior center tube (42) are for passing pressure hole, movable block (2) cover is in outer interior center tube (42) outside lower part, interior center tube (42) bottom has polylith third connecting block (45) along the even interval connection of circumference, be connected with down connector (46) between polylith third connecting block (45) bottom, connector (46) outside upper portion under installing ring (71) is connected, connector (46) top under first reset spring (1) lower extreme is connected.

3. The packer capable of protecting the rubber barrel for the oil field water injection well is characterized in that a setting mechanism (3) comprises a first connecting block (31), a working barrel (32), a second connecting block (33), a pressure bearing seat (34), an extrusion block (35), a setting rubber barrel (36) and a spacer block (37), the first connecting block (31) is sleeved outside an inner central tube (42), the movable block (2) pushes the first connecting block (31) to move upwards, the working barrel (32) is rotatably connected to the first connecting block (31), a fixing ring (73) is slidably connected to the upper portion of the outer side of the working barrel (32), the four second connecting blocks (33) are uniformly connected to the top of the working barrel (32) at intervals along the circumferential direction, the pressure bearing seat (34) is connected between the tops of the four second connecting blocks (33), the pressure bearing block (76) is clamped to the upper portion of the pressure bearing seat (34), the extrusion block (35) is rotatably connected to the pressure bearing seat (34), the outer side of the outer central tube (44) is uniformly sleeved with three setting rubber cylinders (36) at intervals, the extrusion blocks (35) and the pressure bearing seats (34) extrude the setting rubber cylinders (36), and a spacer block (37) is connected between every two adjacent setting rubber cylinders (36).

4. The packer capable of protecting the rubber sleeve and used for the oil field water injection well is characterized in that a valve mechanism (5) comprises a second reset spring (51), a lower well washing piston (52), an upper well washing piston (53) and a pushing block (54), the top of a first connecting block (31) is connected with the second reset spring (51), the second reset spring (51) is sleeved on the outer side of an inner central pipe (42), the upper end of the second reset spring (51) is connected with a lower well washing piston (52), a gap between the lower well washing piston (52) and an extrusion block (35) and the inner central pipe (42) is a lower well washing hole, the lower well washing piston (52) blocks gaps between four second connecting blocks (33), the outer side of the upper part of the inner central pipe (42) is sleeved with the upper well washing piston (53), the upper connecting head (41) is sleeved on the outer side of the upper well washing piston (53), the bottom of the upper well washing piston (53) is uniformly connected with the four pushing blocks (54) at intervals along the circumferential direction, the pushing block (54) pushes the wedge block (715) to move.

5. The packer capable of protecting the rubber barrel for the oil field water injection well is characterized in that the pressure relief mechanism (6) comprises a sliding plate (61), a rubber barrel (62), a third return spring (63), a ratchet bar (64), a first common spring (65) and a first clamping block (66), four sliding plates (61) are connected to the lower connector (46) in a sliding manner at uniform intervals along the circumferential direction, the rubber barrel (62) is connected between the outer sides of the four sliding plates (61), the rubber barrel (62) slides in the inner lower portion of the working barrel (32), the third return spring (63) is sleeved on the upper portion of the rubber barrel (62), two ends of the third return spring (63) are respectively connected to the upper portion of the rubber barrel (62) and the upper portion of the lower connector (46), four ratchet bars (64) are connected to the outer lower portion of the rubber barrel (62) at uniform intervals along the circumferential direction, and four clamping teeth are connected to the lower portion of the inner arc surface of the working barrel (32) at uniform intervals along the circumferential direction, the latch is located ratchet (64) below, the latch blocks with ratchet (64) each other, rubber tube (62) intrados upper portion is connected with a plurality of first ordinary springs (65) along circumference evenly spaced, be connected with first fixture block (66) on first ordinary spring (65), first fixture block (66) and rubber tube (62) sliding fit, lower connector (46) extrados upper portion is opened has a plurality of draw-in grooves, draw-in groove on lower connector (46) is the same with first fixture block (66) quantity, draw-in groove sliding fit on first fixture block (66) and lower connector (46).

6. The packer capable of protecting the rubber sleeve and used for the oil field water injection well is characterized by further comprising a filtering mechanism (8), wherein the filtering mechanism (8) comprises a brush plate (81), a first filter screen (82) and a second filter screen (83), the brush plate (81) is connected between the upper portions of the supporting plates (74), the first filter screen (82) is connected between every two adjacent second connecting blocks (33), the brush plate (81) is in sliding fit with the second connecting blocks (33), impurities on the first filter screen (82) are brushed down by the brush plate (81), and the second filter screen (83) is connected between every two adjacent fixing blocks (43).

7. The packer capable of protecting the rubber sleeve for the oil field water injection well is characterized by further comprising a shielding mechanism (9), wherein the shielding mechanism (9) comprises a first shielding plate (91), third common springs (92), a rotary drum (93), a third clamping block (94), a second shielding plate (95) and a push rod (96), the first shielding plate (91) is connected to the upper portion of the upper connector (41), a plurality of groups of the third common springs (92) are uniformly and circumferentially connected to the upper portion of the outer arc surface of the upper connector (41) at intervals, the number of the third common springs (92) in each group is two, the second shielding plate (95) is connected between the two third common springs (92) in each group, the second shielding plate (95) is in sliding fit with the first shielding plate (91), the rotary drum (93) is rotatably connected to the upper portion of the upper connector (41), and the rotary drum (93) is located below the first shielding plate (91), the upper portion of the outer arc surface of the rotary drum (93) is connected with a plurality of third clamping blocks (94) at uniform intervals along the circumferential direction, the inner side of each second shielding plate (95) is also connected with the third clamping block (94), two adjacent third clamping blocks (94) are matched with each other, the top of the electromagnetic plate (711) is connected with a plurality of push rods (96) at uniform intervals along the circumferential direction, and the push rods (96) are matched with the rotary drum (93).

Technical Field

The invention relates to the technical field of packers, in particular to a packer capable of protecting a rubber cylinder for an oil field water injection well.

Background

Oil is an important non-renewable resource in modern society, and the current mode of oil exploitation is usually by oil field exploitation, and during the exploitation, packers are usually needed to pack oil pipes and oil and gas well casings and perform well washing operation.

Through retrieval, patent publication No. CN206830122U discloses a water injection packer, comprising: the sealing mechanism, first working barrel, second working barrel and the setting mechanism outside inner tube, cover were established including the pipe: the wall of the inner pipe is provided with a water injection hole; a sleeve capable of reciprocating along the axial direction of the inner pipe is arranged in the inner pipe, a flow guide hole capable of being communicated with the water injection hole in the axial reciprocating movement process of the sleeve along the inner pipe is arranged on the sleeve, and the opening degree of the water injection hole is adjusted; the inner side surface of the second working barrel is provided with a locking tooth, a locking part is arranged in the second working barrel, and the locking tooth can be locked with the locking part to limit the second working barrel to move downwards; the setting mechanism comprises an upper hydraulic cylinder capable of moving upwards and an upper piston fixedly sleeved on the inner pipe. The above patents suffer from the following disadvantages: the packer is placed and taken out, the rubber sleeve cannot be protected, and when the rubber sleeve moves in the oil pipe and the oil-gas well casing, the rubber sleeve is easy to contact and rub with small stones, so that the service life of the rubber sleeve is shortened, and the requirements of people cannot be met.

Therefore, there is a need to develop a packer for oil field water injection well, which can protect the rubber sleeve during the process of setting and taking out the packer, so as to prolong the service life of the rubber sleeve and protect the rubber sleeve.

Disclosure of Invention

(1) Technical problem to be solved

The invention aims to overcome the defects that the rubber sleeve can not be protected in the process of placing and taking out the packer in the patent, and the rubber sleeve is easy to contact and rub with small stones when moving in an oil pipe and an oil-gas well casing, so that the service life of the rubber sleeve is shortened.

(2) Technical scheme

In order to solve the technical problems, the invention provides the packer for the oil field water injection well, which can protect a rubber sleeve, and comprises a first reset spring, a movable block, a setting mechanism, a deblocking mechanism, a valve mechanism, a pressure relief mechanism and a protection mechanism, wherein the setting mechanism, the first reset spring and the pressure relief mechanism are arranged on the deblocking mechanism;

the protection mechanism comprises a mounting ring, a push plate, a fixing ring, a support plate, a pushing ring, a connecting plate, a second common spring, a first protection plate, a mounting plate, a fourth reset spring, an electromagnetic plate, a second protection plate, a second clamping block, a connecting spring and a wedge-shaped block, wherein the upper part of the outer side of the deblocking mechanism is connected with the mounting ring, the top part of the mounting ring is uniformly and circumferentially connected with the four push plates at intervals, the fixing ring is slidably connected with the fixing ring, the top part of the fixing ring is uniformly and circumferentially connected with a plurality of support plates, the push plate is in sliding fit with the fixing ring, the pushing ring is slidably connected between the plurality of support plates and is connected with the push plate, the pushing ring is separated from the support plate, the connecting plate is placed at the top part of the support plate and supports the connecting plate, the upper part of the outer side of the connecting plate is connected with two second common springs, the first protection plate is connected between the plurality of second common springs, and is in sliding fit with the connecting plate, be connected with the mounting panel in the deblocking mechanism, the mounting panel bottom is connected with fourth reset spring, fourth reset spring overlaps in the deblocking mechanism, fourth reset spring lower extreme is connected with the electromagnetic plate, the gliding style is connected with the second guard plate on the electromagnetic plate, the second guard plate is iron system, the electromagnetic plate absorbs the second guard plate, deblocking mechanism is last to be connected with four second fixture blocks along the even interval slidingtype of circumference, second fixture block inboard is connected with the wedge, be connected with coupling spring between second fixture block and the deblocking mechanism, the second fixture block is along the circumferential slip on the electromagnetic plate, the second fixture block vertically blocks the electromagnetic plate.

Preferably, the deblocking mechanism comprises an upper connector, an inner central tube, fixed blocks, an outer central tube, third connecting blocks and a lower connector, the inner central tube is sleeved in the upper connector, a fourth reset spring is sleeved on the upper connector, the mounting plate is connected with the upper part of the outer arc surface of the upper connector, the bottom of the upper connector is uniformly connected with the four fixed blocks at intervals along the circumferential direction, the outer central tube is connected between the bottoms of the four fixed blocks, the four second clamping blocks are uniformly connected with the upper part of the outer side of the outer central tube at intervals along the circumferential direction in a sliding manner, the connecting spring is connected between the second clamping blocks and the outer central tube, the outer central tube is sleeved outside the inner central tube, the transverse gap between the outer central tube and the inner central tube is an upper washing well mouth, the longitudinal gap between the outer central tube and the inner central tube is a pressure transmission pore, the movable block is sleeved on the lower part of the outer side of the outer central tube, the bottom of the inner central tube is uniformly connected with the third connecting blocks at intervals along the circumferential direction, the lower connector is connected between the bottoms of the third connecting blocks, the mounting ring is connected with the upper part of the outer side of the lower connector, and the lower end of the first return spring is connected with the top of the lower connector.

Preferably, the setting mechanism is including first connecting block, the working barrel, the second connecting block, the bearing seat, the extrusion piece, setting packing element and spacer block, interior center tube outside cover has first connecting block, the movable block promotes first connecting block rebound, the rotation type is connected with the working barrel on the first connecting block, gu fixed ring slidingtype connection working barrel outside upper portion, the working barrel top is connected with four second connecting blocks along the even interval of circumference, be connected with the bearing seat between the four second connecting block tops, the connecting plate card is on bearing seat upper portion, the rotation type is connected with the extrusion piece in the bearing seat, the even interval cover in outer center tube outside has three setting packing element, extrusion piece and bearing seat extrude setting packing element, be connected with the spacer block between two adjacent setting packing elements.

Preferably, the valve mechanism is including second reset spring, lower well-flushing piston, go up well-flushing piston and ejector pad, first connecting block top is connected with second reset spring, the center tube outside including second reset spring cover, second reset spring upper end is connected with lower well-flushing piston, the clearance between well-flushing piston and extrusion piece and the interior center tube is the well head of washing down, lower well-flushing piston blocks the clearance between the four second connecting blocks, the cover of interior center tube upper portion outside has upper well-flushing piston, it overlaps in the well-flushing piston outside to go up the connector, it has four ejector pads to go up well-flushing piston bottom along the even interval connection in circumference, the ejector pad promotes the wedge and removes.

Preferably, the pressure relief mechanism comprises a sliding plate, a rubber cylinder, a third return spring, ratchet bars, a first common spring and a first clamping block, wherein four sliding plates are connected to the lower connector in a sliding manner at even intervals along the circumferential direction, a rubber cylinder is connected between the outer sides of the four sliding plates, the rubber cylinder slides in the lower part of the working cylinder, the third return spring is sleeved on the upper part of the rubber cylinder, two ends of the third return spring are respectively connected to the upper part of the rubber cylinder and the upper part of the lower connector, four ratchet bars are connected to the lower part of the outer side of the rubber cylinder at even intervals along the circumferential direction, four clamping teeth are connected to the lower part of the inner arc surface of the working cylinder at even intervals along the circumferential direction, the clamping teeth are positioned below the ratchet bars and are clamped with each other, a plurality of the first common springs are connected to the upper part of the inner arc surface of the rubber cylinder at even intervals along the circumferential direction, the first common spring is connected with the first clamping block, and the first clamping block is in sliding fit with the rubber cylinder, a plurality of clamping grooves are formed in the upper portion of the outer arc surface of the lower connector, the number of the clamping grooves in the lower connector is the same as that of the first clamping blocks, and the first clamping blocks are in sliding fit with the clamping grooves in the lower connector.

Preferably, still including filtering mechanism, filtering mechanism is connected with the brush board including brush board, first filter screen and second filter screen between the polylith backup pad upper portion, all is connected with first filter screen between every two adjacent second connecting blocks, brush board and second connecting block sliding fit, and the impurity brush down on the first filter screen is brushed to the brush board, all is connected with the second filter screen between every two adjacent fixed blocks.

Preferably, the device also comprises a shielding mechanism which comprises a first shielding plate, a third common spring and a rotating cylinder, the third fixture block, second shielding plate and push rod, it is connected with first shielding plate to go up connector upper portion, it is connected with the ordinary spring of multiunit third along the even interval of circumference to go up connector extrados upper portion, the ordinary spring of third of every group is two settings, be connected with the second shielding plate between the ordinary spring of two third of every group, second shielding plate and first shielding plate sliding fit, it is connected with the rotary drum to go up connector upper portion rotary type, the rotary drum is located first shielding plate below, the even interval of circumference is connected with polylith third fixture block on rotary drum extrados upper portion, every second shielding plate inboard also all is connected with the third fixture block, two adjacent third fixture blocks are mutually supported, the even interval of circumference is connected with the polylith push rod in electromagnetic panel top, the push rod cooperates with the rotary drum.

(3) Has the advantages that:

1. the setting device sets the oil pipe and the oil-gas well casing through the deformation of the setting rubber cylinder in the setting mechanism, thereby realizing the setting effect.

2. The invention performs well washing and water injection through the mutual matching of the upper well washing piston and the lower well washing piston in the valve mechanism, thereby realizing the effects of well washing and water injection.

3. The invention plays a role in removing the setting through the mutual matching of the unsealing mechanism and the pressure relief mechanism, thereby realizing the effect of removing the setting.

4. The protection device protects the setting rubber cylinder by the mutual matching of the protection mechanism and the shielding mechanism, thereby achieving the purpose of protecting the rubber cylinder in the process of placing and taking out the packer and effectively solving the technical problems in the patent.

5. According to the invention, the impurities in the water injection process are filtered through the filtering mechanism, so that the effect of filtering the impurities in the water injection process is realized.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a perspective sectional view of the setting and unsetting mechanisms of the present invention.

Fig. 4 is a partial perspective sectional view of the setting and unsetting mechanisms of the present invention.

Fig. 5 is an exploded perspective view of the unsealing mechanism of the present invention.

Fig. 6 is a perspective sectional view of the setting mechanism, the unsetting mechanism and the valve mechanism of the present invention.

Fig. 7 is a partial perspective sectional view of the setting mechanism, the unsetting mechanism and the valve mechanism of the present invention.

Fig. 8 is an exploded view of a part of the three-dimensional structure of the setting mechanism and the unsealing mechanism of the invention.

Fig. 9 is a perspective sectional view of the setting mechanism, the unsetting mechanism and the fixing mechanism of the present invention.

Fig. 10 is a partial perspective sectional view of the setting mechanism, the unsetting mechanism and the valve mechanism of the present invention.

Fig. 11 is a partially enlarged perspective view of part a of the present invention.

Fig. 12 is an exploded perspective view of the setting, unsetting and securing mechanisms of the present invention.

Fig. 13 is a schematic perspective view of the setting mechanism, the unsealing mechanism and the protection mechanism of the present invention.

Fig. 14 is a schematic view of a first partially solid structure of the setting mechanism, the unsetting mechanism and the protection mechanism of the present invention.

Fig. 15 is a schematic view of a second partially solid structure of the setting mechanism, the unsetting mechanism and the protection mechanism of the present invention.

Fig. 16 is a cross-sectional view of a first partially unitary construction of a setting mechanism, a deblocking mechanism and a guard mechanism of the present invention.

Fig. 17 is a partially enlarged perspective view of the part B of the present invention.

Fig. 18 is a cross-sectional view of a second partially unitary construction of a setting mechanism, a unsetting mechanism and a shielding mechanism of the present invention.

Fig. 19 is a partially enlarged perspective view of the part C of the present invention.

Fig. 20 is a schematic perspective view of the setting mechanism, the unsetting mechanism and the filtering mechanism of the present invention.

Fig. 21 is a schematic perspective view of a part of the setting mechanism, the unsealing mechanism and the filtering mechanism of the invention.

Fig. 22 is a schematic perspective view of the setting mechanism, the unsealing mechanism and the shielding mechanism of the present invention.

Fig. 23 is a schematic partial perspective view of the setting mechanism, the unsealing mechanism and the shielding mechanism of the present invention.

The labels in the figures are: 1-a first return spring, 2-a movable block, 3-a setting mechanism, 31-a first connecting block, 32-a working cylinder, 33-a second connecting block, 34-a pressure-bearing seat, 35-an extrusion block, 36-a setting rubber cylinder, 37-a spacer block, 4-a deblocking mechanism, 41-an upper connecting head, 42-an inner central tube, 43-a fixed block, 44-an outer central tube, 45-a third connecting block, 46-a lower connecting head, 5-a valve mechanism, 51-a second return spring, 52-a lower well-flushing piston, 53-an upper well-flushing piston, 54-a pushing block, 6-a pressure relief mechanism, 61-a sliding plate, 62-a rubber cylinder, 63-a third return spring, 64-a ratchet bar, 65-a first common spring, 66-a first clamping block, 7-a protection mechanism, 71-a mounting ring, 72-a push plate, 73-a fixing ring, 74-a supporting plate, 75-a pushing ring, 76-a connecting plate, 77-a second common spring, 78-a first protection plate, 79-a mounting plate, 710-a fourth return spring, 711-an electromagnetic plate, 712-a second protection plate, 713-a second fixture block, 714-a connecting spring, 715-a wedge block, 8-a filtering mechanism, 81-a brush plate, 82-a first filter screen, 83-a second filter screen, 9-a shielding mechanism, 91-a first shielding plate, 92-a third common spring, 93-a rotary drum, 94-a third fixture block, 95-a second shielding plate and 96-a push rod.

Detailed Description

The invention is further described below with reference to the figures and examples.

Example 1

The utility model provides a can protect packer for oil field water injection well of packing element, as shown in fig. 1 and fig. 2, including first reset spring 1, movable block 2, sit and seal mechanism 3, deblocking mechanism 4 and valve mechanism 5, still including release mechanism 6 and protection machanism 7, be equipped with on deblocking mechanism 4 and sit and seal mechanism 3, first reset spring 1 and release mechanism 6, first reset spring 1 top is connected with movable block 2, be equipped with valve mechanism 5 between deblocking mechanism 4 and the setting mechanism 3, be equipped with protection machanism 7 between setting mechanism 3 and deblocking mechanism 4.

When needs use this packer, earlier install this packer through deblocking mechanism 4, the back finishes the installation, in with high-pressure liquid input deblocking mechanism 4, high-pressure liquid extrusion movable block 2 in the input deblocking mechanism 4 upwards removes, first reset spring 1 is stretched, movable block 2 drives setting mechanism 3 when the rebound and sits and seal, thus, realize the effect of setting, setting mechanism 3 is when sitting and sealing, it is fixed with setting mechanism 3 through release mechanism 6, outside water is at the in-process that floods, realize the effect of well washing and water injection through valve mechanism 5, thereby wash well and water injection, when need not sit and seal, deblocking mechanism 4 and the 6 cooperation of release mechanism carry out the deblocking, protection machanism 7 protects setting mechanism 3, thereby realize the effect of protecting setting mechanism 3.

As shown in fig. 3 and 4, the unsealing mechanism 4 includes an upper connector 41, an inner central tube 42, fixing blocks 43, an outer central tube 44, a third connecting block 45 and a lower connector 46, the inner central tube 42 is sleeved in the upper connector 41, four fixing blocks 43 are uniformly connected to the bottom of the upper connector 41 along the circumferential direction at intervals, the outer central tube 44 is connected between the bottoms of the four fixing blocks 43, the outer central tube 44 is sleeved outside the inner central tube 42, a horizontal gap between the outer central tube 44 and the inner central tube 42 is a flushing well, a longitudinal gap between the outer central tube 44 and the inner central tube 42 is a pressure transmission gap, the movable block 2 is sleeved on the lower portion of the outer inner central tube 42, a plurality of third connecting blocks 45 are uniformly connected to the bottom of the inner central tube 42 along the circumferential direction at intervals, a lower connector 46 is connected between the bottoms of the plurality of third connecting blocks 45, and the bottom of the first return spring 1 is connected to the top of the lower connector 46.

When the installation, install this packer through last connector 41, high-pressure liquid is when passing through, earlier through last connector 41 and interior center tube 42, then passes the clearance of polylith third connecting block 45, and at this moment high-pressure liquid extrudees movable block 2 to extrude movable block 2 and upwards remove, first reset spring 1 is stretched, so, the effect that the realization promoted movable block 2 and upwards removed the drive and set and seal mechanism 3 and carry out the seat.

As shown in fig. 3-9, the setting mechanism 3 includes a first connecting block 31, a working barrel 32, a second connecting block 33, a pressure-bearing seat 34, an extrusion block 35, setting glue barrels 36 and a spacer block 37, the first connecting block 31 is sleeved outside an inner central tube 42, the movable block 2 pushes the first connecting block 31 to move upwards, the working barrel 32 is rotatably connected to the first connecting block 31, four second connecting blocks 33 are uniformly connected to the top of the working barrel 32 at intervals along the circumferential direction, the pressure-bearing seat 34 is connected between the tops of the four second connecting blocks 33, the extrusion block 35 is rotatably connected to the pressure-bearing seat 34, three setting glue barrels 36 are uniformly sleeved outside an outer central tube 44 at intervals, the extrusion block 35 and the pressure-bearing seat 34 extrude the setting glue barrels 36, and the spacer block 37 is connected between two adjacent setting glue barrels 36.

The movable block 2 pushes the first connecting block 31 to move upwards when moving upwards, the first connecting block 31 drives the working barrel 32 to move upwards when moving upwards, the working barrel 32 moves upwards to drive all parts on the working barrel to move upwards together, after the pressure-bearing seat 34 and the extrusion block 35 move upwards to be in contact with the setting rubber barrel 36, the pressure-bearing seat 34 and the extrusion block 35 continue to move upwards to extrude the setting rubber barrel 36, the setting rubber barrel 36 deforms after being extruded, the setting rubber barrel 36 becomes flat and expands outwards in the deformation process, and the setting effect is achieved after the setting rubber barrel 36 expands outwards, so that the purpose of setting is achieved.

As shown in fig. 6, 7 and 8, the valve mechanism 5 includes a second return spring 51, a lower well-flushing piston 52, an upper well-flushing piston 53 and a pushing block 54, the top of the first connecting block 31 is connected with the second return spring 51, the second return spring 51 is sleeved outside the inner central tube 42, the top of the second return spring 51 is connected with the lower well-flushing piston 52, a gap between the lower well-flushing piston 52 and the pressing block 35 and the inner central tube 42 is a lower well-flushing port, the lower well-flushing piston 52 blocks gaps between the four second connecting blocks 33, the upper well-flushing piston 53 is sleeved outside the upper central tube 42, the upper connecting head 41 is sleeved outside the upper well-flushing piston 53, and the bottom of the upper well-flushing piston 53 is connected with the four pushing blocks 54 at equal intervals along the circumferential direction.

When the high-pressure liquid passes through the gap between the upper connector 41 and the inner central pipe 42, the upper flushing piston 53 is pressed to move downwards, the upper flushing piston 53 blocks the upper flushing port after moving downwards, in the setting process, water flows into the packer through gaps among the fixing blocks 43, the water squeezes the upper well-flushing piston 53 to move upwards in the process of inrush, the upper well-flushing piston 53 does not block the upper well-flushing port any more after moving upwards, at the moment, water flows into the lower well-flushing port through the upper well-flushing port and the pressure transfer pore, along with the increase of water flowing into the lower well-flushing port, the water in the lower well-flushing port extrudes the lower well-flushing piston 52 to move downwards, the second return spring 51 is compressed, the lower well-flushing piston 52 does not block the gap between the four second connecting blocks 33 after moving downwards, at this time, water in the lower well flushing port gushes out through gaps among the four second connecting blocks 33, so that well flushing and water injection operations are completed.

As shown in fig. 10, 11 and 12, the pressure relief mechanism 6 includes a sliding plate 61, a rubber cylinder 62, a third return spring 63, ratchet bars 64, a first normal spring 65 and a first block 66, four sliding plates 61 are slidably connected to the lower connector 46 at uniform intervals along the circumferential direction, the rubber cylinder 62 is connected between the outer sides of the four sliding plates 61, the rubber cylinder 62 slides in the lower portion of the working cylinder 32, the third return spring 63 is sleeved on the upper portion of the rubber cylinder 62, two ends of the third return spring 63 are respectively connected to the upper portion of the rubber cylinder 62 and the upper portion of the lower connector 46, four ratchet bars 64 are connected to the lower portion of the outer side of the rubber cylinder 62 at uniform intervals along the circumferential direction, four latch teeth are connected to the lower portion of the inner arc surface of the working cylinder 32 at uniform intervals along the circumferential direction, the latch teeth are located below the ratchet bars 64, the latch teeth are mutually latched with the ratchet bars 64, the plurality of first normal springs 65 are connected to the upper portion of the inner arc surface of the rubber cylinder 62 at uniform intervals along the circumferential direction, the first common spring 65 is connected with a first fixture block 66, the first fixture block 66 is in sliding fit with the rubber tube 62, the upper portion of the outer arc surface of the lower connector 46 is provided with a plurality of clamping grooves, the number of the clamping grooves on the lower connector 46 is the same as that of the first fixture blocks 66, and the adjacent first fixture blocks 66 are in sliding fit with the clamping grooves on the lower connector 46. When the working barrel 32 moves upwards, the clamping teeth are driven to move upwards, the clamping teeth can contact with the ratchet rack 64 when moving upwards, after the clamping teeth move upwards to contact with the ratchet rack 64, the clamping teeth continue to move upwards to press the ratchet rack 64 to move inwards, the rubber barrel 62 is extruded and deformed, when the clamping teeth move upwards until the ratchet rack 64 is not pressed any more, the ratchet rack 64 resets under the action of the rubber barrel 62 to clamp the clamping teeth, so that the working barrel 32 is clamped, all parts on the working barrel 32 are clamped together, therefore, the setting mechanism 3 is fixed when the setting mechanism 3 is used for setting, when the setting is not needed, high-pressure liquid is firstly pumped away, then the inner central tube 42 is pulled to move upwards, the inner central tube 42 moves upwards to drive all the parts on the inner tube 42 to move upwards together, and because the ratchet rack 64 is clamped by the clamping teeth at this time, the lower connecting head 46 can not drive the ratchet rack 64 to move upwards, the rubber cylinder 62 and the sliding plate 61 can not move upwards, at this time, the third return spring 63 is stretched, the lower connector 46 can be separated from the first clamping block 66 when moving upwards, the first common spring 65 is compressed, when the lower connector 46 moves to abut against the sliding plate 61, the inner central tube 42 is twisted to rotate, the inner central tube 42 rotates to drive all the components thereon to rotate together, when the lower connector 46 rotates, the sliding plate 61 drives the ratchet rack 64 to rotate, when the ratchet rack 64 rotates to be not clamped by the clamping teeth, the rubber cylinder 62 is reset under the action of the third return spring 63, the rubber cylinder 62 resets to drive all the components thereon to reset together, at this time, the first clamping block 66 is reset to be clamped into the rubber cylinder 62 again under the action of the first common spring 65, because the ratchet rack 64 is not clamped with the clamping teeth, the setting rubber cylinder 36 resets under the action of self elasticity, the setting packing element 36 pushes the extrusion block 35 and the pressure bearing seat 34 to reset together when resetting, the pressure bearing seat 34 drives all parts on the pressure bearing seat to reset together when resetting, the third reset spring 63 also resets accordingly, the required sealing effect does not reach an ideal state, secondary setting can be carried out, and the protection mechanism 7 protects the setting packing element 36.

As shown in fig. 13-19, the protection mechanism 7 includes a mounting ring 71, a push plate 72, a fixing ring 73, a supporting plate 74, a push ring 75, a connecting plate 76, a second common spring 77, a first protection plate 78, a mounting plate 79, a fourth return spring 710, an electromagnetic plate 711, a second protection plate 712, a second fixture 713, a connecting spring 714 and a wedge 715, the mounting ring 71 is connected to the upper portion of the outer side of the lower connector 46, four push plates 72 are uniformly connected to the top of the mounting ring 71 along the circumferential direction at intervals, the fixing ring 73 is slidably connected to the upper portion of the outer side of the working barrel 32, a plurality of supporting plates 74 are uniformly connected to the top of the fixing ring 73 along the circumferential direction at intervals, the push plate 72 is slidably fitted with the fixing ring 73, the push ring 75 is slidably connected between the plurality of supporting plates 74, the push ring 75 is connected with the push plate 72, the push ring 75 is separated from the supporting plate 74, the connecting plate 76 is placed on the top of the supporting plate 74, the connecting plate 76 is clamped on the upper portion of the bearing seat 34, the support plate 74 supports the connecting plate 76, the upper portion of the outer side of the connecting plate 76 is connected with two second common springs 77, a first protection plate 78 is connected between the second common springs 77, the first protection plate 78 is in sliding fit with the connecting plate 76, the upper portion of the outer arc surface of the upper connector 41 is connected with a mounting plate 79, the bottom of the mounting plate 79 is connected with a fourth return spring 710, the fourth return spring 710 is sleeved on the upper connector 41, the bottom of the fourth return spring 710 is connected with an electromagnetic plate 711, the electromagnetic plate 711 is connected with a second protection plate 712 in a sliding manner, the second protection plate 712 is made of iron, the electromagnetic plate 711 sucks up the second protection plate 712, the upper portion of the outer side of the outer center tube 44 is connected with four sliding second fixture blocks 713 along the circumferential direction at uniform intervals, the inner side of the second fixture 713 is connected with a wedge 715, the push block 54 pushes the wedge 715 to move, and the connecting spring 714 is connected between the second fixture 713 and the outer center tube 44, the second latch 713 slides on the solenoid plate 711 in the circumferential direction, and the second latch 713 vertically latches the solenoid plate 711.

When the second block 713 is clamped on the electromagnetic plate 711, the fourth return spring 710 is in a stretched state, when the setting rubber cylinder 36 is in an initial state, the first protection plate 78 and the second protection plate 712 cooperate to protect the setting rubber cylinder 36, when the setting rubber cylinder 36 is squeezed to perform a setting function, the pressure bearing seat 34 moves upwards to squeeze the connection plate 76 to move outwards, the second common spring 77 is compressed, when the connection plate 76 moves to no longer abut against the pressure bearing seat 34, the support plate 74 no longer supports the connection plate 76, at this time, the first protection plate 78 moves downwards under the action of gravity, the first protection plate 78 drives all the components on the first protection plate to move downwards together when moving downwards, the connection plate 76 abuts against the top of the push ring 75 after moving downwards, the first protection plate 78 does not block the setting rubber cylinder 36 to perform setting after moving downwards, the upper well washing piston 53 drives the push block 54 to move downwards when moving downwards, when the pushing block 54 moves downwards to contact with the wedge block 715, the pushing block 54 continues to move downwards to push the wedge block 715 to move inwards, the wedge block 715 drives the second clamping block 713 to move inwards when moving inwards, the connecting spring 714 is compressed, the electromagnetic plate 711 is no longer blocked after the second clamping block 713 moves inwards, at this time, the electromagnetic plate 711 moves upwards under the action of the fourth return spring 710, the electromagnetic plate 711 moves upwards together with the second protection plate 712, when the electromagnetic plate 711 moves upwards to the limit, the electromagnetic plate 711 is started to generate suction force to the second protection plate 712, so as to drive the second protection plate 712 to move upwards again, when the electromagnetic plate 711 completely blocks the second protection plate 712, the second protection plate 712 cannot block the setting rubber cylinder 36 to perform setting, so that when the setting rubber cylinder 36 performs the setting rubber cylinder 36, the first protection plate 78 and the second protection plate 712 cannot block the setting rubber cylinder 36, thus, when the setting glue cylinder 36 is not needed to be used, the setting glue cylinder 36 is protected, the service life of the setting glue cylinder 36 is prolonged, the lower connector 46 drives the mounting ring 71 to move upwards when moving upwards, the mounting ring 71 moves upwards to drive the push plate 72 to move upwards, the push plate 72 moves upwards to push the push ring 75 to move upwards, the push ring 75 moves upwards to push the connecting plate 76 to move upwards, the connecting plate 76 moves upwards to drive all the components on the connecting plate 76 to move upwards together, when the connecting plate 76 moves upwards to be positioned on the outer side of the upper part of the supporting plate 74, the push ring 75 continues to move upwards to push the connecting plate 76 to lean against the supporting plate 74 again, the setting glue cylinder 36 is still in a setting state, after the setting glue cylinder 36 is unsealed, the first protection plate 78 can continue to protect the setting glue cylinder, the connecting plate 76 is also pressed and clamped on the seat 34 under the action of the second common spring 77, the packer is then manually retracted and the second fender 712 is manually pulled downward to protect another portion of the setting rubber 36.

Example 2

On the basis of embodiment 1, as shown in fig. 20 and 21, the device further comprises a filtering mechanism 8, the filtering mechanism 8 comprises a brush plate 81, a first filter screen 82 and a second filter screen 83, the brush plate 81 is connected between the upper parts of the supporting plates 74, the first filter screen 82 is connected between every two adjacent second connecting blocks 33, the brush plate 81 is in sliding fit with the second connecting blocks 33, the brush plate 81 brushes impurities on the first filter screen 82, and the second filter screen 83 is connected between every two adjacent fixing blocks 43.

Water plays filterable effect through first filter screen 82 and second filter screen 83 surging and the in-process of surging, drives second filter screen 83 upward movement together when second connecting block 33 moves up, can contact with brush board 81 when second filter screen 83 upward movement, and at this moment, brush board 81 brushes the impurity on the second filter screen 83 off, so, filters surging and surging water.

Example 3

On the basis of embodiment 2, as shown in fig. 2, 22 and 23, the present invention further includes a shielding mechanism 9, the shielding mechanism 9 includes a first shielding plate 91, third common springs 92, a rotary drum 93, third blocks 94, a second shielding plate 95 and a push rod 96, the first shielding plate 91 is connected to the upper portion of the upper connector 41, a plurality of sets of the third common springs 92 are uniformly connected to the upper portion of the outer arc surface of the upper connector 41 at intervals along the circumferential direction, two sets of the third common springs 92 are arranged in each set, the second shielding plate 95 is connected between two sets of the third common springs 92 in each set, the second shielding plate 95 is in sliding fit with the first shielding plate 91, the rotary drum 93 is rotatably connected to the upper portion of the upper connector 41, the rotary drum 93 is located below the first shielding plate 91, a plurality of the third blocks 94 are uniformly connected to the upper portion of the outer arc surface of the rotary drum 93 at intervals along the circumferential direction, the inner side of each second shielding plate 95 is also connected with the third blocks 94, two adjacent third clamping blocks 94 are matched with each other, a plurality of push rods 96 are uniformly connected to the top of the electromagnetic plate 711 at intervals along the circumferential direction, and the push rods 96 are matched with the rotary drum 93.

When the third block 94 on the drum 93 and the third block 94 on the second shielding plate 95 are clamped with each other, the third ordinary spring 92 is in a compressed state, the electromagnetic plate 711 moves upward to drive the push rod 96 to move upward, when the push rod 96 moves upward to contact with the drum 93, the push rod 96 continues to move upward to push the drum 93 to rotate, the drum 93 rotates to drive the third block 94 thereon to rotate together, when the third block 94 on the drum 93 rotates to no longer be clamped with the third block 94 on the second shielding plate 95, the second shielding plate 95 is moved outward under the action of the third ordinary spring 92, the second shielding plate 95 cooperates with the first shielding plate 91 after moving outward to play a shielding effect, thus playing a shielding role when setting and retracting the packer, thereby protecting the whole packer, especially the setting rubber tube 36, when retracting the packer, the second shielding plate 95 is manually pressed to reset, the third common spring 92 is compressed at the moment, and after the second shielding plate 95 is reset, the rotating drum 93 is reversely rotated to drive the third clamping block 94 on the rotating drum 93 and the third clamping block 94 on the second shielding plate 95 to be clamped with each other, so that the second shielding plate 95 is fixed.

The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.