阅读说明：本技术 一种测井用五爪定位悬挂器 (Five-claw positioning hanger for well logging ) 是由 张明 牛占山 孙明龙 彭卫国 沈开元 余强 谭宗华 宋杨 刘磊 蒿多民 于 2020-07-10 设计创作，主要内容包括：本发明提供了一种测井用五爪定位悬挂器,属于油田开发技术领域,旨在解决目前油田用悬挂器在钢丝作业悬挂测井时使用不方便的问题；包括基座、解锁组件、三爪滚轮组件、两爪滚轮组件和下接头；所述下接头螺纹连接于所述基座的后端；所述基座内设有锁块套,所述锁块套的一端与所述下接头固定连接；本发明的设计,结构紧凑,体积占用小；能够实现入井及打捞的快速收放,使用操作方便,提高油田开发的工作效率。(The invention provides a five-claw positioning hanger for well logging, belongs to the technical field of oilfield development, and aims to solve the problem that the conventional hanger for the oilfield is inconvenient to use when a steel wire is used for hanging the well logging; the device comprises a base, an unlocking assembly, a three-jaw roller assembly, a two-jaw roller assembly and a lower joint; the lower joint is in threaded connection with the rear end of the base; a locking block sleeve is arranged in the base, and one end of the locking block sleeve is fixedly connected with the lower connector; the design of the invention has compact structure and small volume occupation; the quick retraction and extension of well entry and salvage can be realized, the use and the operation are convenient, and the working efficiency of oilfield development is improved.)

1. A five-claw positioning hanger for well logging is characterized by comprising a base, an unlocking assembly, a three-claw roller assembly, a two-claw roller assembly and a lower joint; the lower joint is in threaded connection with the rear end of the base; a locking block sleeve is arranged in the base, and one end of the locking block sleeve is fixedly connected with the lower connector;

the three-jaw roller assembly comprises a center rod, a limiting sleeve, a three-jaw lower cross arm and a plurality of wall hanging assemblies;

the limiting sleeve is arranged on the central rod in a sliding mode, and the limiting sleeve is arranged in the locking block sleeve in a sliding mode; the locking block sleeve is movably provided with a locking block; the limiting sleeve is provided with a locking groove matched with the locking block;

one end of the central rod is fixedly connected with the lower joint; the three-jaw lower cross arm is sleeved on the central rod in a sliding manner;

one end of the wall hanging assembly is hinged to the three-jaw lower cross arm;

the central rod is sleeved with a limiting spring and a lower working spring; one end of the limiting spring is fixedly connected with the base, and the other end of the limiting spring is fixedly connected with the limiting sleeve; one end of the lower working spring is fixedly connected with the limiting sleeve, and the other end of the lower working spring is fixedly connected with the three-jaw lower cross arm;

the unlocking assembly is arranged in the base in a sliding mode, the front end of the unlocking assembly extends to the outside of the base, and the rear end of the unlocking assembly is in sliding contact with the locking block sleeve;

the two-jaw roller assembly is arranged in the front end of the base in a sliding mode.

2. The five-jaw positioning hanger for logging well as recited in claim 1, wherein said two-jaw roller assembly comprises an upper fixing nut, an upper cross arm, an upper fishing head and a plurality of wall hanging assemblies; an upper limiting nut is slidably sleeved on the upper fishing head; the base is provided with a round hole for accommodating the upper limiting nut, and the upper limiting nut is fixedly arranged in the screw hole; the upper fixing nut and the upper cross arm are respectively and fixedly arranged at the rear end of the upper fishing head; an upper working spring is movably sleeved on the upper fishing head, and two ends of the upper working spring are respectively abutted against the upper cross arm and the upper limiting nut; one end of the wall hanging assembly is hinged to the upper cross arm.

3. The five-jaw positioning hanger for logging use of claim 1, wherein the unlocking assembly comprises a control sleeve, a lower control rod, a connecting block and an upper control rod; two ends of the lower control rod are respectively fixedly connected with the control sleeve and the connecting block; the rear end of the upper control rod is fixedly connected with the connecting block, and the front end of the upper control rod extends to the outside of the base; the control sleeve is in sliding contact with the outer wall of the lock block sleeve; a groove for accommodating the locking block is formed in the control sleeve; the base is provided with a groove for accommodating the connecting block.

4. The five-claw positioning hanger for logging use according to claim 3, wherein the base is movably provided with a shear pin, and the upper control rod is provided with a pin hole matched with the shear pin.

5. The five-jaw positioning hanger of any one of claims 1 or 2, wherein the base is provided with a trapezoidal groove for accommodating the wall hanging assembly; the wall hanging assembly comprises a wall hanging plate and rollers; the roller is rotatably arranged at one end of the wall hanging plate; and a torsion spring is fixedly arranged at the other end of the wall hanging plate.

Technical Field

The invention relates to the technical field of oilfield development, in particular to a five-claw positioning hanger for well logging.

Background

In order to monitor the development and production dynamics of the oil field, the oil field needs to be tested for flowing pressure, static pressure, flowing temperature, static temperature and the like for hundreds of times. In order to realize the test of the test instrument in the oil casing within a certain period of time, the test instrument needs to be hung at a certain fixed position of the oil casing, and after the test is finished, the fishing tool together with the test instrument and the hanging tool is used for fishing the test instrument to the well. The conventional hanger is mainly hung in an oil pipe, and then steel wire operation hanging well logging needs to be carried out in a sleeve along with the development of an oil field, the inner diameter of the sleeve is larger than that of the oil pipe, tools need to pass through a lubricator, and the inner diameter of the lubricator is the same as that of the oil pipe; the diameter of the tool body is small, and the diameter of the suspension point is large; the tool still needs to withdraw all the suspension devices in the fishing process, and then the tool can smoothly pass through the wellhead and the blowout prevention pipe, so that the problem needs to be solved urgently.

Disclosure of Invention

Aiming at the technical defects, the invention aims to provide a five-claw positioning hanger for logging, which has a compact structure and small volume occupation; the quick retraction and extension of well entry and salvage can be realized, the use and the operation are convenient, and the working efficiency of oilfield development is improved.

In order to solve the technical problems, the invention adopts the following technical scheme:

a five-claw positioning hanger for well logging is characterized by comprising a base, an unlocking assembly, a three-claw roller assembly, a two-claw roller assembly and a lower joint; the lower joint is in threaded connection with the rear end of the base; a locking block sleeve is arranged in the base, and one end of the locking block sleeve is fixedly connected with the lower connector;

the three-jaw roller assembly comprises a center rod, a limiting sleeve, a three-jaw lower cross arm and a plurality of wall hanging assemblies;

the limiting sleeve is arranged on the central rod in a sliding mode, and the limiting sleeve is arranged in the locking block sleeve in a sliding mode; the locking block sleeve is movably provided with a locking block; the limiting sleeve is provided with a locking groove matched with the locking block;

one end of the central rod is fixedly connected with the lower joint; the three-jaw lower cross arm is sleeved on the central rod in a sliding manner;

one end of the wall hanging assembly is hinged to the three-jaw lower cross arm;

the central rod is sleeved with a limiting spring and a lower working spring; one end of the limiting spring is fixedly connected with the base, and the other end of the limiting spring is fixedly connected with the limiting sleeve; one end of the lower working spring is fixedly connected with the limiting sleeve, and the other end of the lower working spring is fixedly connected with the three-jaw lower cross arm;

the unlocking assembly is arranged in the base in a sliding mode, the front end of the unlocking assembly extends to the outside of the base, and the rear end of the unlocking assembly is in sliding contact with the locking block sleeve;

the two-jaw roller assembly is arranged in the front end of the base in a sliding mode.

Preferably, the two-jaw roller assembly comprises an upper fixing nut, an upper cross arm, an upper fishing head and a plurality of wall hanging assemblies; an upper limiting nut is slidably sleeved on the upper fishing head; the base is provided with a round hole for accommodating the upper limiting nut, and the upper limiting nut is fixedly arranged in the screw hole; the upper fixing nut and the upper cross arm are respectively and fixedly arranged at the rear end of the upper fishing head; an upper working spring is movably sleeved on the upper fishing head, and two ends of the upper working spring are respectively abutted against the upper cross arm and the upper limiting nut; one end of the wall hanging assembly is hinged to the upper cross arm.

Preferably, the unlocking assembly comprises a control sleeve, a lower control rod, a connecting block and an upper control rod; two ends of the lower control rod are respectively fixedly connected with the control sleeve and the connecting block; the rear end of the upper control rod is fixedly connected with the connecting block, and the front end of the upper control rod extends to the outside of the base; the control sleeve is in sliding contact with the outer wall of the lock block sleeve; a groove for accommodating the locking block is formed in the control sleeve; the base is provided with a groove for accommodating the connecting block.

Preferably, the base is movably provided with a shearing pin, and the upper control rod is provided with a pin hole matched with the shearing pin.

Preferably, a trapezoidal groove for accommodating the wall hanging assembly is formed in the base; the wall hanging assembly comprises a wall hanging plate and rollers; the roller is rotatably arranged at one end of the wall hanging plate; and a torsion spring is fixedly arranged at the other end of the wall hanging plate.

The invention has the beneficial effects that: the design of the invention has compact structure and small volume occupation; the quick retraction and extension of well entry and salvage can be realized, the use and the operation are convenient, and the working efficiency of oilfield development is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a five-jaw positioning hanger for logging according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A in FIG. 1;

FIG. 3 is a schematic cross-sectional view of B-B in FIG. 1;

FIG. 4 is a schematic cross-sectional view of C-C of FIG. 1;

FIG. 5 is a schematic view of the three-jaw roller assembly of the five-jaw positioning hanger of the present invention in a well;

FIG. 6 is a schematic view of the two-jaw roller assembly of the five-jaw positioning hanger of the present invention in position during entry into a well;

FIG. 7 is a schematic view of the state of the three-jaw roller assembly and the unlocking assembly when the five-jaw positioning hanger of the present invention is salvaged;

FIG. 8 is a schematic view showing the state of the two-jaw roller assembly when the five-jaw positioning hanger of the present invention is used for fishing.

Description of reference numerals:

the device comprises a lower connector 1, a central rod 2, a locking block sleeve 3, a base 4, a locking block 5, a limiting sleeve 6, a control sleeve 7, a lower control rod 8, a limiting spring 9, a lower working spring 10, a three-jaw lower cross arm 11, a torsion spring 12, a wall hanging plate 13, a connecting pin 14, a connecting block 15, a roller 16, a pin shaft 17, a shearing pin 18, an upper control rod 19, an upper fixing nut 20, an upper cross arm 21, an upper working spring 22, an upper limiting nut 23, an upper fishing head 24 and a control rod 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "in", "upper", "lower", "lateral", "inner", etc. indicate directions or positional relationships based on those shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 4, a five-claw positioning hanger for well logging comprises a base 4, an unlocking assembly, a three-claw roller assembly, a two-claw roller assembly and a lower joint 1; the lower joint 1 is in threaded connection with the rear end of the base 4; a locking block sleeve 3 is arranged in the base 4, and one end of the locking block sleeve 3 is fixedly connected with the lower connector 1; the three-jaw roller assembly comprises a central rod 2, a limiting sleeve 6, a three-jaw lower cross arm 11 and three wall-hanging assemblies; the limiting sleeve 6 is sleeved on the central rod 2 in a sliding manner, and the limiting sleeve 6 is arranged in the locking block sleeve 3 in a sliding manner; the locking block sleeve 3 is movably provided with a locking block 5, and the locking block sleeve 3 is provided with a groove for accommodating the locking block 5; a locking groove matched with the locking block 5 is formed in the limiting sleeve 6, the surface of the limiting sleeve 6, which is in contact with the locking block 5, is an inclined surface, and when the limiting sleeve 6 slides towards the direction close to the lower connector 1, the locking block 5 can be ejected out from the locking block sleeve 3; when the limiting sleeve 6 slides in the direction far away from the lower joint 1, a space for the locking block 5 to move towards the inside of the locking block sleeve 3 can be reserved; one end of the central rod 2 is fixedly connected with the lower joint 1; the three-jaw lower cross arm 11 is sleeved on the central rod 2 in a sliding manner; one end of the wall hanging component is hinged on the three-jaw lower cross arm 11; the central rod 2 is sleeved with a limiting spring 9 and a lower working spring 10; one end of a limiting spring 9 is fixedly connected with the base 4, and the other end of the limiting spring is fixedly connected with a limiting sleeve 6; one end of a lower working spring 10 is fixedly connected with the limiting sleeve 6, and the other end of the lower working spring is fixedly connected with a three-jaw lower cross arm 11; the unlocking assembly is arranged in the base 4 in a sliding mode, the front end of the unlocking assembly extends out of the base 4, and the rear end of the unlocking assembly is in sliding contact with the lock block sleeve 3; the unlocking assembly comprises a control sleeve 7, a lower control rod 8, a connecting block 15 and an upper control rod 19; two ends of the lower control rod 8 are respectively fixedly connected with the control sleeve 7 and the connecting block 15; the connecting block 15 is fixedly connected with the lower control rod 8 through a connecting pin 14; the rear end of the upper control rod 19 is fixedly connected with the connecting block 15, and the front end extends to the outside of the base 4; the control sleeve 7 is in sliding contact with the outer wall of the lock block sleeve 3; a groove for accommodating the locking block 5 is arranged in the control sleeve 7; the base 4 is provided with a groove for accommodating the connecting block 15; the two-jaw roller assembly is arranged in the front end of the base 4 in a sliding manner; the two-jaw roller assembly comprises an upper fixing nut 20, an upper cross arm 21, an upper fishing head 24 and two wall hanging assemblies; an upper limit nut 23 is slidably sleeved on the upper fishing head 24; a round hole for accommodating the upper limiting nut 23 is formed in the base 4, and the upper limiting nut 23 is fixedly arranged in the screw hole; the upper fixing nut 20 and the upper cross arm 21 are respectively and fixedly arranged at the rear end of the upper fishing head 24; an upper working spring 22 is movably sleeved on the upper fishing head 24, and two ends of the upper working spring 22 are respectively abutted against the upper cross arm 21 and the upper limiting nut 23; one end of the wall hanging component is hinged on the upper cross arm 21.

Furthermore, a cutting pin 18 is movably arranged on the base 4, and a pin hole matched with the cutting pin 18 is arranged on the upper control rod 19.

Further, a trapezoidal groove for accommodating the wall hanging component is arranged on the base 4; the wall hanging assembly comprises a wall hanging plate 13 and rollers 16; the roller 16 is rotatably arranged at one end of the hanging wall plate 13 through a pin shaft 17; the other end of the wall hanging plate 13 is fixedly provided with a torsion spring 12; the other end of a torsion spring of a wall hanging assembly on the three-jaw lower cross arm 11 is fixedly connected to the three-jaw lower cross arm 11; the torsion spring drives the hanging wall plate 13 and the roller 16 to rotate towards the inner direction of the base 4 in a natural state; when the three-jaw lower cross arm 11 is forced to move towards the front end of the base 4, the roller 16 can rotate outwards along the slope surface of the trapezoidal groove of the base 4; the other end of a torsion spring of a wall hanging assembly on the upper cross arm 21 is fixedly connected to the upper cross arm 21; the torsion spring drives the hanging wall plate 13 and the roller 16 to rotate towards the inner direction of the base 4 in a natural state; when the upper fishing head 24 drives the upper cross arm 21 to move towards the rear end of the base 4, the roller 16 can rotate outwards along the slope surface of the trapezoidal groove of the base 4.

Furthermore, a mushroom head-shaped bulge special for fishing is integrally arranged on the upper fishing head 24 for fishing; an internal thread groove is arranged in the lower joint 1 and is used for connecting a logging instrument; the base 4 is provided with a long through hole for inserting the releaser control rod into the long hole and pushing the three-jaw lower cross arm 11 to move.

When the three-jaw positioning hanger is used, when the five-jaw positioning hanger is put into a well, the upper fishing head 24 is connected with a releaser special for the existing trip instrument, a control rod 25 of the releaser is inserted into the base 4 to push the three-jaw lower cross arm 11 to the lowest part, and simultaneously, three rollers 16 on the three-jaw lower cross arm 11 are all accommodated in a trapezoidal groove in the base 4; the releaser pulls the fishing head to the uppermost position with both rollers 16 on the upper cross arm 21 received in a trapezoidal groove in the interior of the base 4 to facilitate passage through the lubricator and wellhead as shown in figures 5 and 6.

The five-claw positioning hanger is released after entering a well, the lower working spring 10 pushes the three-claw lower cross arm 11 to move upwards, and the roller 16 on the whole three-claw lower cross arm 11 is pushed out along the inclined planes of the three trapezoidal grooves of the base 4 and is clamped with the base 4 and the inner wall of the sleeve to realize hanging; after the five-claw positioning hanger is released by the releaser, the upper working spring 22 pushes the upper transverse wall to move downwards, so that the roller 16 on the two-claw roller assembly moves downwards and is clamped with the inner wall of the sleeve and the base 4 at the same time, and the five-claw positioning hanger is prevented from moving upwards.

When the five-claw positioning hanger is used for fishing, the conventional fishing device is firstly contacted with the upper fishing head 24, and then the upper fishing head 24 is grabbed, the upper control rod 19 is impacted downwards, the shearing pin 18 is cut off, the connecting block 15 and the lower control rod 8 are pushed, and meanwhile, the control sleeve 7 is pushed to move downwards; under the action of a limiting spring 9, the limiting sleeve 6 moves downwards, and as the lower part of the limiting sleeve 6 is in inclined contact with the locking block 5, the locking block 5 is extruded out, and the limiting sleeve 6 slides to the lower end of the five-claw positioning hanger; the lower working spring is not supported by the limiting sleeve 6, the three-jaw roller assembly can slide to the lower part of the five-jaw positioning hanger, and the three rollers 16 are recovered to the inside of the five-jaw positioning hanger. The fishing head 24 is lifted by the overshot so that the two rollers 16 of the two-jaw roller assembly are retracted within the base 4. As shown in fig. 7 and 8. After fishing, all components are retracted in the base 4 and can smoothly pass through the wellhead and the blowout prevention pipe.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.