阅读说明：本技术 送入工具、分层采油管柱及分层采油管柱下入方法 (Running tool, layered oil production pipe column and layered oil production pipe column running method ) 是由 尹玉超 武洪鑫 孔洋 顾海瑞 苏延龙 侯红意 于 2019-10-22 设计创作，主要内容包括：本发明提供了一种送入工具、分层采油管柱及分层采油管柱下入方法,涉及石油开采设备技术领域,送入工具包括定位组件以及液压丢手组件,其中,生产管柱上端固接有导入工具,定位组件部分插设于导入工具的空腔,液压丢手组件插设于定位组件的空腔,在未投球打压前,液压丢手组件与定位组件固接,并完成定位组件和导入工具的轴向固定。在定位组件和导入工具轴向固定后,定位组件的第一限位部和导入工具的第二限位部配合,第二限位部限制定位组件沿至少一个旋向转动。缓解了现有技术中的生产管柱在下入过程中很容易因遇阻而导致下入不到位的技术问题。(The invention provides a sending tool, a layered oil production pipe column and a layered oil production pipe column running method, and relates to the technical field of oil exploitation equipment. After the positioning assembly and the leading-in tool are axially fixed, the first limiting part of the positioning assembly is matched with the second limiting part of the leading-in tool, and the second limiting part limits the positioning assembly to rotate along at least one rotation direction. The technical problem that the production string in the prior art is easy to be not put in place due to resistance in the running process is solved.)

1. A running tool for securing with an ingression tool (30) at the upper end of a production string (40), comprising a positioning assembly (10) and a hydraulic release assembly (20);

the positioning component (10) is partially inserted into the cavity of the leading-in tool (30), the hydraulic releasing component (20) is inserted into the cavity of the positioning component (10) and fixedly connected with the positioning component (10) and used for completing axial fixation of the positioning component (10) and the leading-in tool (30), and the hydraulic releasing component (20) can be released from being fixedly connected with the positioning component (10) through ball throwing and pressing;

the positioning assembly (10) comprises a first limiting part (121), the guiding-in tool (30) comprises a second limiting part (321), and the first limiting part (121) is matched with the second limiting part (321) and used for finishing the relative fixation of the positioning assembly (10) and the guiding-in tool (30) in at least one rotation direction.

2. The running tool according to claim 1, wherein the positioning assembly (10) comprises a first joint (11), the first joint (11) comprises a first shaft section (111) in a cylindrical structure and a second shaft section (112) in a resilient claw structure, the outer side wall of the second shaft section (112) is provided with a first protrusion (114), the inner wall of the lead-in tool (30) is provided with a first groove matching with the first protrusion (114);

the hydraulic releasing assembly (20) is used for preventing the second shaft section (112) from radially contracting so that the first protrusion (114) is clamped into the first groove, a chamfer structure used for sliding relative to the first groove is arranged at the end part of the first protrusion (114) along the axis direction of the second shaft section (112), and the chamfer structure is used for enabling the first joint (11) to be separated from the leading-in tool (30).

3. The running tool according to claim 2, wherein the hydraulic releasing assembly (20) comprises a ball seat (21), a pin, and a steel ball (22) for sealing a cavity of the ball seat (21);

the ball seat (21) is inserted in the first joint (11) and fixedly connected through the pin, a second protrusion (211) is arranged on the outer side wall of the ball seat (21), a third protrusion (115) is arranged on the inner side wall of the second shaft section (112), and the second protrusion (211) and the third protrusion (115) are in radial abutting joint along the ball seat (21) so as to prevent radial contraction of the second shaft section (112).

4. The running tool according to claim 2 or 3, wherein the positioning assembly (10) further comprises a fixing sleeve (12), the fixing sleeve (12) is in threaded connection with the first shaft section (111) and is in plug fit with the lead-in tool (30), the first limiting portion (121) is disposed on an outer side wall of the fixing sleeve (12), the second limiting portion (321) is disposed on an upper end face of the lead-in tool (30), and the first limiting portion (121) abuts against the upper end face of the lead-in tool (30) and is circumferentially staggered with the second limiting portion (321).

5. The running tool according to claim 4, wherein the first stopper portion (121) and the second stopper portion (321) are plural, the plural first stopper portions (121) form a tooth-like structure, and the plural second stopper portions (321) form a tooth-like structure.

6. The running tool according to claim 5, wherein the positioning assembly (10) further comprises a second joint (13), the first joint (11) further comprises a third shaft section (113) in a cylindrical structure, the third shaft section (113) is located at one end of the second shaft section (112) far away from the first shaft section (111), and the second joint (13) is fixedly connected with the third shaft section (113) and is used for preventing the hydraulic releasing assembly (20) from being released from an opening of the third shaft section (113).

7. A zonal production string comprising an open-topped sand control string (50), an open-topped production string (40), an introduction tool (30), and the running tool of any of claims 1-6;

a plurality of packers (70) are arranged on the sand control pipe column (50) from top to bottom at intervals, and first openings used for being communicated with different oil layers (120) are arranged between the adjacent packers (70) and below the lowermost packer (70) of the sand control pipe column (50);

the production pipe column (40) is inserted into the sand control pipe column (50) and is fixedly sleeved with sealing pipes which are the same in number as the packers (70) and correspond to the packers (70) one by one from top to bottom, and the packers (70) are connected with the corresponding sealing pipes so as to be used for isolating adjacent oil layers (120); the production string (40) is provided with second openings between adjacent sealing pipes and below the sealing pipe at the lowest part, a sliding sleeve (110) for opening and closing the second openings is inserted into the production string (40), and the sliding sleeves (110) are the same in number as the second openings and are in one-to-one correspondence with the second openings;

the production string (40) and the running tool are both fixedly connected with the leading-in tool (30).

8. The stratified oil production string according to claim 7, wherein the introducing means (30) comprises a third joint (31) and a fourth joint (32), the third joint (31) is screwed to the fourth joint (32) at one end and is fixedly connected to the uppermost sealing pipe (80) at the other end, and a first groove is formed at the connection between the third joint (31) and the fourth joint (32).

9. The layered oil production string as recited in claim 7, wherein the uppermost sealing tube (80) comprises a fourth shaft section (81) with an elastic claw-shaped structure, a fourth protrusion (82) is fixedly arranged on the outer side wall of the fourth shaft section (81), a second groove corresponding to the fourth protrusion (82) is fixedly arranged on the inner side wall of the uppermost packer (70), and the fourth protrusion (82) can be clamped into the second groove to axially fix the sand control string (50) and the production string (40).

10. A method of running a layered production string, using the layered production string of any one of claims 7 to 9, comprising the steps of:

setting the sand control pipe column (50) to a set position of a shaft (60), completing the setting of each packer (70), and taking out a service tool of the sand control pipe column (50);

the production string (40) is rotatably lowered to a set position through a feeding tool, so that the uppermost sealing pipe (80) is matched with the uppermost packer (70) for locking and sealing, and the other sealing pipes (80) are matched with the corresponding packers (70) for sealing;

the ball is thrown and pressed, the ball seat (21) cuts off the pin to descend, and the second shaft section (112) in the first joint (11) is contracted;

pulling the first joint (11) upwards, the first bulge (114) is separated from the first groove, and the whole feeding tool is separated from the guiding tool (30);

and (3) a sliding sleeve switch tool (130) is put in, and a sliding sleeve (110) corresponding to the set oil layer (120) is opened or closed, so that the production oil recovery of the set layer position is realized.

Technical Field

The invention relates to the technical field of oil exploitation equipment, in particular to a feeding tool, a layered oil production pipe column and a layered oil production pipe column running method.

Background

In the exploitation of a multi-reservoir production well, layered oil extraction is required, and generally, packers are used for separating each oil reservoir into a plurality of sections for exploitation to reduce the interference between the reservoirs. The conventional production string is easy to be not put in place due to resistance in the putting process, so that the conventional production string needs to be adjusted for many times, and the problem of incomplete separation of oil layers is easily caused while the putting efficiency is low.

Disclosure of Invention

The invention aims to provide a running tool, a layered oil production pipe column and a layered oil production pipe column running method, so as to solve the technical problem that the production pipe column in the prior art is easy to run in an incomplete mode due to resistance in the running process.

The invention provides a feeding tool, which is fixedly connected with an introducing tool at the upper end of a production string and comprises a positioning component and a hydraulic releasing component;

the positioning component is partially inserted into the cavity of the leading-in tool, the hydraulic releasing component is inserted into the cavity of the positioning component and fixedly connected with the positioning component for completing the axial fixation of the positioning component and the leading-in tool, and the hydraulic releasing component can be released from the fixed connection with the positioning component by being pressed by throwing a ball;

the positioning assembly comprises a first limiting part, the guiding-in tool comprises a second limiting part, and the first limiting part is matched with the second limiting part and used for completing the relative fixation of the positioning assembly and the guiding-in tool in at least one rotation direction.

Furthermore, the positioning assembly comprises a first joint, the first joint comprises a first shaft section in a cylindrical structure and a second shaft section in an elastic claw-shaped structure, a first bulge is arranged on the outer side wall of the second shaft section, and a first groove matched with the first bulge is arranged on the inner wall of the guiding tool;

the hydraulic releasing assembly is used for preventing the second shaft section from radially contracting so that the first protrusion is clamped into the first groove, and the first protrusion can have the tendency of disengaging from the first groove when the second shaft section is subjected to axial force.

Further, along the axis direction of the second shaft section, a chamfer structure used for sliding relative to the first groove is arranged at the end part of the first protrusion, and the chamfer structure is used for enabling the first joint to be separated from the guiding tool.

Further, the hydraulic releasing assembly comprises a ball seat, a pin and a steel ball for sealing a cavity of the ball seat;

the ball seat is inserted in the first joint and fixedly connected through the pin, a second bulge is arranged on the outer side wall of the ball seat, a third bulge is arranged on the inner side wall of the second shaft section, and the second bulge and the third bulge are in radial butt joint along the ball seat to prevent radial contraction of the second shaft section.

Further, locating component still includes fixed cover, fixed cover with first shaft segment threaded connection and with leading-in instrument grafting cooperation, first spacing portion set up in the lateral wall of fixed cover, the spacing portion of second set up in the up end of leading-in instrument, first spacing portion with the up end butt of leading-in instrument and with the crisscross setting of the spacing portion circumference of second.

Furthermore, the first limiting parts and the second limiting parts are multiple, the multiple first limiting parts form a tooth-shaped structure, and the multiple second limiting parts form a tooth-shaped structure.

Furthermore, the positioning assembly further comprises a second joint, the first joint further comprises a third shaft section which is of a cylindrical structure, the third shaft section is located at one end, far away from the first shaft section, of the second shaft section, and the second joint is fixedly connected with the third shaft section and used for preventing the hydraulic releasing assembly from coming out of an opening of the third shaft section.

The invention also provides a layered oil production pipe column which comprises a sand prevention pipe column with an opening at the upper end, a production pipe column with an opening at the upper end, an introduction tool and the feeding tool;

the sand control pipe column is provided with a plurality of packers at intervals from top to bottom, and first openings used for being communicated with different oil layers are arranged between the adjacent packers and below the lowermost packer of the sand control pipe column;

the production pipe column is inserted into the sand prevention pipe column, sealing pipes which are the same in number as the packers and correspond to the packers in a one-to-one manner are fixedly sleeved from top to bottom, and the packers are connected with the corresponding sealing pipes so as to be used for isolating adjacent oil layers; the production pipe column is provided with second openings between adjacent sealing pipes and below the sealing pipe at the lowest part, sliding sleeves for opening and closing the second openings are inserted into the production pipe column, and the sliding sleeves and the second openings are the same in number and are in one-to-one correspondence;

the production string and the feeding tool are fixedly connected with the leading-in tool.

Further, the leading-in tool includes third joint and fourth joint, third joint one end with fourth joint threaded connection, the other end with the top sealing tube rigid coupling, first recess is formed at the third joint with the junction of fourth joint.

Further, the top the sealing tube includes the fourth shaft section for elasticity claw column structure, fourth shaft section lateral wall has set firmly the fourth arch, the top the inside wall of packer set firmly with the protruding second recess that corresponds of fourth, the fourth arch can be gone into the second recess, in order to accomplish the sand control tubular column with the axial fixity of production tubular column.

Furthermore, a screen pipe is fixedly arranged on the first opening of the sand control pipe column.

The invention also provides a method for running the layered oil production pipe column, which comprises the following steps:

setting the sand control pipe column into a set position of a shaft to complete the setting of each packer, and taking out a service tool of the sand control pipe column;

the production pipe column is rotatably lowered to a set position through a feeding tool, the uppermost sealing pipe is matched with the uppermost packer to be locked and sealed, and the other sealing pipes are matched with the corresponding packers to be sealed;

the ball is thrown and pressed, the ball seat shearing pin descends, and the second shaft section in the first joint is contracted;

the first joint is pulled upwards, the first bulge is separated from the first groove, and the feeding tool is integrally separated from the leading-in tool;

and (4) a sliding sleeve switch tool is put in, and a sliding sleeve corresponding to the set oil layer is opened or closed, so that the production oil extraction of the set layer position is realized.

Compared with the prior art, the running tool, the layered oil production pipe column and the layered oil production pipe column running method provided by the invention have the following beneficial effects:

the invention provides a sending tool, which comprises a positioning component and a hydraulic releasing component, wherein the upper end of a production string is fixedly connected with a leading-in tool, part of the positioning component is inserted into a cavity of the leading-in tool, the hydraulic releasing component is inserted into the cavity of the positioning component, the hydraulic releasing component is fixedly connected with the positioning component before the ball is not thrown and pressed, and the axial fixation of the positioning component and the leading-in tool is completed. After the positioning assembly and the leading-in tool are axially fixed, the first limiting part of the positioning assembly is matched with the second limiting part of the leading-in tool, and the second limiting part prevents the positioning assembly from rotating along at least one rotation direction.

When putting the production string, through giving the decurrent power of the locating component of sending into the instrument, and then drive production string and leading-in instrument insert gradually and establish to the cavity of sand control string, when too big and can't only transfer to target in place through decurrent power at the resistance that the production string receives, can give locating component along a soon to pivoted power, and then drive the production string and rotate around its axis, under the cooperation of the turning force and downward power, the transfer that the production string can relax targets in place, it is higher to go into efficiency down. Meanwhile, after the production string is put in place, the fixed connection relation between the hydraulic releasing component and the positioning component can be released through ball throwing and pressing, so that the hydraulic releasing component is separated from the positioning component, the axial fixation between the positioning component and the leading-in tool is cancelled, the positioning component which bears external pressure and is possibly deformed when the production string is put down can be taken out from a cavity of the leading-in tool, and the normal use of the production string and the leading-in tool in the subsequent production process cannot be influenced.

The technical advantages of the layered production string provided by the present invention are the same as those of the running tool described above and will not be described further herein.

The technical advantages of the method for lowering the layered oil production string provided by the invention are the same as those of the layered oil production string, and are not repeated herein.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a sand control string in a layered production string after setting according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a production string being lowered from a layered production string according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a layered oil production string when a ball is thrown and pressed and a release is provided in an embodiment of the present invention;

FIG. 4 is a schematic illustration of a layered production string as it is being run off a running tool in accordance with an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a layered oil production string running a sliding sleeve opening and closing tool according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a layered oil production string with a sliding sleeve opening and closing tool removed according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the assembled running tool and pull-out tool in a layered production string according to an embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7;

fig. 9 is a schematic structural diagram of an uppermost gland in a layered production string according to an embodiment of the present invention.

Icon: 10-a positioning assembly; 20-a hydraulic release assembly; 30-an introduction tool; 40-producing a tubular string; 50-a sand control pipe column; 60-a wellbore; 70-a packer; 80-sealing the tube; 90-sieve tube; 110-a sliding sleeve; 120-oil layer; 130-a sliding sleeve switch tool;

11-a first joint; 12-fixing the sleeve; 13-a second linker;

21-a ball seat; 22-steel ball;

31-a third linker; 32-a fourth joint;

71-a central tube; 72-a cannula;

81-a fourth shaft section; 82-a fourth bump;

111-a first shaft section; 112-a second shaft section; 113-a third shaft segment; 114-a first protrusion; 115-third projection;

121-a first limiting part;

211-a second protrusion;

321-second limiting part.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral 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 in specific cases to those skilled in the art.