CN218092962U

CN218092962U - Branch well releasing device

Info

Publication number: CN218092962U
Application number: CN202221362223.9U
Authority: CN
Inventors: 唐洪林; 刘晗; 吴仲华; 张辉; 陈锐; 曹继飞; 陈勇; 赵宗锋; 任红; 张锐
Original assignee: Sinopec Oilfield Service Corp; Sinopec Shengli Petroleum Engineering Corp; Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
Current assignee: China Petroleum and Chemical Corp; Sinopec Oilfield Service Corp; Sinopec Shengli Petroleum Engineering Corp; Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
Priority date: 2022-06-01
Filing date: 2022-06-01
Publication date: 2022-12-20
Anticipated expiration: 2032-06-01

Abstract

The utility model provides a device is released to branch's well, include: the lower joint is internally provided with a first shoulder; the upper joint comprises an elastic piece capable of expanding in the radial direction, and the elastic piece is configured to be clamped with the lower joint after being expanded; the inner sleeve is sleeved in the lower joint, the top end of the inner sleeve can be abutted against the first shoulder, and the inner sleeve is configured to be abutted against the elastic piece so that the elastic piece is expanded to be clamped with the lower joint; the transposition assembly comprises a transposer, and the transposer is connected with the inner sleeve and drives the inner sleeve to move upwards, so that the inner sleeve is separated from the elastic part, and the elastic part is contracted and separated from the lower joint. The utility model is simple in operation convenient, can accomplish the releasing process high-efficiently, easy to use.

Description

Branch well releasing device

Technical Field

The utility model belongs to the technical field of well drilling safety, specifically, relate to a device is given up to multilateral well.

Background

The offshore oil industry is moving to deeper sea areas, and in the face of the high cost operation environment, operators tend to reduce the number of single wells required for developing oil and gas reservoirs as much as possible, save the cost repeatedly generated on the single wells and corresponding equipment (such as casing pipes, oil production platforms, well heads and the like), and reduce the influence on the environment. Multilateral well technology is becoming increasingly important in the exploration and development of marine hydrocarbons. In addition, the whole east oil area in China enters the later development stage, a large number of abandoned wells exist, and the utilization of the abandoned wells for lateral drilling of the old well is a development mode with low cost and high benefit, and has great potential and development prospect.

The branch well technology can reduce the drilling cost and improve the comprehensive development benefit of the oil field; the production speed and the final recovery rate can be improved, the oil drainage mode of the oil and gas reservoir can be improved, the reserve volume can be increased, and the oil reservoir can be more easily managed in the whole exploitation period of the oil field.

In lateral wellbore completion operations, it is necessary to divide the downhole tool into two parts in the well, one part being raised up to the well and one part being left in the well. Tools that split a downhole tool into two parts in a well are called release tools. Running a completion string into the bottom hole to design the well depth using a release tool is currently the most common technique. After the completion operation is finished, the characteristics of the releasing tool are utilized to realize the releasing operation and put forward the sending tool, thereby meeting the requirements of the on-site completion operation.

SUMMERY OF THE UTILITY MODEL

To the technical problem as above, the utility model aims at providing a branch well releasing device, it can accomplish releasing work reliably and stably.

According to the utility model discloses, a device is given up to branch's well, include: a lower joint; the upper joint comprises an elastic piece capable of radially contracting and expanding, and the elastic piece is configured to extend into the lower joint and be clamped with the lower joint; an inner sleeve sleeved in the upper joint and configured to be fixedly connected with the elastic member through a shear pin in an initial state, so as to prevent the elastic member from radially contracting after being clamped with the lower joint; the gear shifting assembly comprises a gear shifter, the gear shifter is configured to extend into the inner sleeve and be connected with the inner sleeve, the shearing pin can be sheared in response to the upward movement of the gear shifting assembly, the inner sleeve can move upwards along with the gear shifter, and therefore the elastic piece is allowed to contract radially, and clamping between the elastic piece and the lower joint is released.

In one embodiment, the transposer can contract and expand in the radial direction, a first protrusion is arranged on the circumferential outer wall of the transposer, the upper end of the first protrusion is a plane, the lower end of the first protrusion is an inclined plane, and a first groove used for being clamped with the first protrusion is arranged on the inner wall of the inner sleeve.

In one embodiment, the transposer comprises a plurality of first elastic strips which are evenly distributed at intervals in the circumferential direction, and the first protrusions are arranged on the first elastic strips.

In one embodiment, a first shoulder is provided on the upper joint, and the first shoulder is configured to abut against the inner sleeve after the clamping of the elastic member and the lower joint is released, so that the upper joint moves up along with the inner sleeve.

In one embodiment, a second protrusion is arranged at the lower end of the elastic part, and a second groove used for being clamped with the second protrusion is arranged on the inner wall of the lower joint.

In one embodiment, a spring collar is arranged on one surface of the elastic member, which is in contact with the inner sleeve, the upper end of the spring collar is a plane, the lower end of the spring collar is an inclined surface, and a spring clamping groove for accommodating the spring collar is arranged on the inner sleeve.

In one embodiment, the elastic member includes a plurality of second elastic strips uniformly distributed at intervals in the circumferential direction, and the second protrusions are arranged on the second elastic strips.

In one embodiment, a plurality of insertion blocks are uniformly arranged on the outer wall of the upper joint in the circumferential direction, and a plurality of insertion grooves used for being matched with the insertion blocks are arranged on the outer wall of the lower joint.

In one embodiment, the indexing assembly further comprises: the spindle is sleeved with the transposer, and a second shoulder is arranged on the spindle; the locking sleeve is sleeved on the mandrel and located above the second shoulder, the second shoulder limits the locking sleeve to move downwards, and the upper portion of the transposer is connected with the locking sleeve through threads.

In one embodiment, a set screw is further provided between the index and the locking sleeve for preventing rotation of the index relative to the locking sleeve.

Compared with the prior art, the method has the following advantages.

The utility model discloses an endotheca supports the elastic component, makes its and lower clutch joint, then when needs give up, removes the endotheca through the transposer, the utility model discloses an elastic component and transposer all adopt the elasticity strip that circumference was arranged, and this kind of structure accuracy is high, thereby improves the utility model discloses stability and the reliability when giving up the work avoid appearing the condition of inefficacy. The utility model is simple in operation convenient, can accomplish releasing process, easy to use high-efficiently.

Drawings

The present invention will be described with reference to the accompanying drawings.

Fig. 1 shows a schematic structural diagram of a branch well releasing device according to the invention;

FIG. 2 shows a schematic structural view of a transposition assembly according to the present invention;

fig. 3 shows a schematic structural view of a releasing state of the branch well releasing device according to the invention;

fig. 4 shows a schematic structural view of the transposer according to the invention;

fig. 5 shows a schematic structural view of the upper joint according to the present invention;

fig. 6 shows a schematic view of the lower joint according to the present invention.

In the figure: 1. an upper joint; 11. an elastic member; 111. a second protrusion; 112. a second elastic strip; 12. a first shoulder; 2. a lower joint; 21. a second groove; 3. an inner sleeve; 31. a first groove; 4. a transposition assembly; 41. a transposer; 411. a first protrusion; 412. a first elastic strip; 413. a third protrusion; 42. a mandrel; 421. a second shoulder; 43. a locking sleeve; 44. a neck joint; 45. a set screw; 46. a bottom joint; 5. shearing the pin; 61. a spring collar; 62. a spring clamp slot; 71. an insertion block; 72. and (4) inserting grooves.

In the present application, all the figures are schematic and are only intended to illustrate the principles of the present invention and are not drawn to scale.

Detailed Description

In the present application, it should be noted that directional terms or qualifiers "upper" and "lower" used in the present application are all referred to fig. 1. They are not intended to limit the absolute position of the parts involved, but may vary from case to case.

Fig. 1 shows a schematic structural diagram of an embodiment of a multilateral well releasing device 100 according to the present invention. As shown in fig. 1, the branch well releasing device 100 includes an upper joint 1, a lower joint 2, an inner sleeve 3 and a transposition assembly 4.

As shown in fig. 1 and 5, wherein the upper joint 1 includes an elastic member 11 provided at a lower end thereof. In the present embodiment, the elastic member 11 includes an elastic member main body and a plurality of second elastic strips 112 uniformly arranged at intervals along the circumferential direction of the elastic member 11, and a second protrusion 111 is provided at a lower end portion of each second elastic strip 112. Meanwhile, a second groove 21 that mates with the second protrusion 111 is provided in the circumferential direction at the inner wall of the lower joint 2. In a natural state, the second protrusion 111 can be engaged in the second groove 21. The inner sleeve 3 is sleeved in the upper joint 1, and specifically, the outer diameter of the inner sleeve 3 is equal to the inner diameter of the elastic member 11. When the inner sleeve 3 is located at the position shown in fig. 1, the inner sleeve 3 can abut against the elastic member 11, so that the elastic member 11 cannot contract in the radial direction, and the second protrusion 111 disposed at the lower end of the elastic member 11 (i.e., the lower end of each second elastic strip 112) can be engaged with the second groove 21 on the lower connector 2 to prevent the detachment. In this way, the upper joint 1 and the lower joint 2 can be reliably connected.

As shown in fig. 1 and 2, the indexing assembly 4 includes an indexer 41. The transposer 41 can be inserted into the inner sleeve 3 and connected to the inner sleeve 3. Then, the transposer 41 can drive the inner sleeve 3 to move upwards together during the process of moving upwards, so that the inner sleeve 3 is separated from the contact with the second elastic strip 112 of the elastic member 11. When the inner sleeve 3 moves to the position shown in fig. 3, the elastic member 11 loses the abutting force of the inner sleeve 3, and the second elastic strip 112 of the elastic member 11 can contract under the external force, so that the second protrusion 111 is disengaged from the second groove 21. The upper end surface of the second protrusion 111 is a slope, and the upper joint 1 moves upwards, so that the slope can make the second protrusion 111 receive a radial component force, thereby contracting. At this time, the transposer 41 moves upward continuously to drive the inner sleeve 3 and the upper joint 1 to move upward together, thereby completing the releasing process.

In a specific embodiment, a first shoulder 12 is provided on the inner wall of the upper joint 1, and after the inner sleeve 3 moves up following the transposer 41 to the second elastic strip 112 separated from the elastic member 11, the top end of the inner sleeve 3 can abut against the first shoulder 12, thereby providing a force for the upper joint 1 to move up along with it. Through this kind of mode, stable in structure, the reliability is strong.

In a particular embodiment, as shown in fig. 1 and 4, the indexer 41 comprises a plurality of first elastic strips 412 uniformly arranged circumferentially spaced apart, so as to enable radial contraction of the indexer 41. Each first elastic strip 412 is provided with a first protrusion 411, the upper end of each first protrusion 411 is a plane, and the lower end of each first protrusion is an inclined plane. These first protrusions 411 form a convex circular ring along the circumferential direction of the index 41. A first groove 31 having a circular ring shape is formed in the inner wall of the inner sleeve 3. When the transposer 41 is inserted into the inner sleeve 3 from top to bottom, the lower end slope of the first protrusion 411 can facilitate the transposer 41 to be inserted into the inner sleeve 3, after the first protrusion 411 completely enters the first groove 31, the transposer 41 is moved upward, and the plane of the upper end of the first protrusion 411 abuts against the upper end face of the first groove 31, so that the inner sleeve 3 is driven to move upward together. When the inner sleeve 3 is moved upward to the position shown in fig. 3, the inner sleeve 3 is no longer in abutment with the second elastic strips 112, so that the second elastic strips 112 can be radially contracted. At this time, the inner sleeve 3 continues to move upwards, the upper end of the inner sleeve 3 can be abutted against the first shoulder 12, so that the upper joint 1 is driven to move upwards, the upper joint 1 is separated from the lower joint 2, and the releasing process is completed.

In a specific embodiment, as shown in fig. 1, the lower portion of the inner sleeve 3 abuts against the elastic member 11, and after the elastic member 11 is radially expanded, the upper portion of the inner sleeve 3 is fixed to the upper joint 1 using the shear pin 5.

In a preferred embodiment, a spring collar 61 is provided on the inner wall of the upper fitting 1. In particular, the spring collar 61 is arranged above the second elastic strip 112 of the elastic element 1. The upper end of the spring collar 61 is a flat surface and the lower end is an inclined surface. The outer wall of the inner sleeve 3 is provided with a spring clamping groove 62. Under this kind of setting, when transposer 41 inserted endotheca 3 downwards, spring rand 61's up end can support the up end of spring clamp groove 62 to can support endotheca 3, prevent its downstream, prevent that transposer 41 from making shear pin 5 fracture too big to the decurrent effort that endotheca 3 produced, improving the utility model discloses a reliability.

In a preferred embodiment, as shown in fig. 1 and 4, a third protrusion 413 is further provided on the outer wall of the transposer 41 in the circumferential direction. The third protrusion 413 is disposed above the first protrusion 411. In this arrangement, as shown in fig. 3, when the inner sleeve 3 is moved up by the transposer 41, the upper end of the third protrusion 413 can abut against the upper joint 1, so as to drive the upper joint 1 to move upward together. Under this kind of setting, third arch 413 drives top connection 1 and moves up, and first arch 411 drives endotheca 3 and moves up to disperse the weight of top connection 1 and endotheca 3 respectively to different positions, improve the utility model discloses a reliability.

As shown in fig. 1 and 2, the indexing assembly 4 further comprises a mandrel 42, a locking sleeve 43, a top sub 44 and a bottom sub 46. A second shoulder 421 is provided on the spindle 42, and the locking sleeve 43 is fitted over the second shoulder 421 of the spindle 42. The transposer 41 is fitted over the mandrel 42, and the upper portion of the transposer 41 is connected to the lock sleeve 43 by a screw. By connecting the transposer 41 and the mandrel 42 in this way, the assembly and disassembly are convenient, and the structure is firm. In particular, a third shoulder 422 for preventing the index from moving up is also provided at the lower portion of the spindle 42. The installation steps of the transposition assembly 4 are as follows: penetrating the transposer 41 onto the mandrel 42 from bottom to top until the bottom of the transposer 41 abuts against the third shoulder 422; the locking sleeve 43 is inserted from the upper part of the mandrel 42 and is connected with the transposer 41 through threads; finally, a top sub 44 and a bottom sub 46 are mounted on the top and bottom of the mandrel 42, respectively.

In a preferred embodiment, a locking screw 45 is threaded radially between the locking sleeve 43 and the index 41. Relative rotation between the lock sleeve 43 and the transposer 41 can be prevented by providing the lock screw 45, and connection between the lock sleeve 43 and the transposer 41 is prevented from being loosened.

As shown in fig. 5 and 6, a plurality of insertion blocks 71 are uniformly arranged on the outer wall of the upper joint 1 at intervals along the circumferential direction, and insertion grooves 72 for receiving the insertion blocks 71 are arranged on the lower joint 2. With this arrangement, after the upper joint 1 and the lower joint 2 are connected, a circumferential torque can be transmitted therebetween through the socket piece 71 and the socket groove 72.

The utility model provides a releasing device stability, reliability are high, can effectively avoid appearing the condition of inefficacy. The utility model discloses an elasticity claw structure is constituteed to the elasticity strip, and the accuracy is high, can guarantee going on smoothly of subsequent handling, high efficiency, easy to use.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and should not be construed as limiting the present invention in any way. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lateral well releasing device, comprising:

a lower joint (2);

the upper joint (1) comprises an elastic piece (11) capable of radially contracting and expanding, and the elastic piece (11) is configured to extend into the lower joint (2) and be clamped with the lower joint (2);

the inner sleeve (3) is sleeved in the upper joint (1) and is fixedly connected with the elastic piece (11) through a shearing pin (5) in an initial state, so that the elastic piece (11) is prevented from radially contracting after being clamped with the lower joint (2);

a transposition assembly (4), the transposition assembly (4) comprising a transposer (41), the transposer (41) being configured to be able to extend into the inner sleeve (3) and to be connected with the inner sleeve (3),

wherein the shearing pin (5) can be sheared in response to the upward movement of the transposition assembly (4), so that the inner sleeve (3) can move upwards along with the transposer (41), thereby allowing the elastic member (11) to contract radially and releasing the clamping between the elastic member (11) and the lower joint (2).

2. The lateral well releasing device according to claim 1, wherein the transposer (41) can be contracted and expanded radially, a first protrusion (411) is arranged on the circumferential outer wall of the transposer (41), the upper end of the first protrusion (411) is a plane, the lower end of the first protrusion is a slope, and a first groove (31) for clamping the first protrusion (411) is arranged on the inner wall of the inner sleeve (3).

3. The lateral releasing device of claim 2, wherein the transposer (41) comprises a plurality of first elastic strips (412) which are circumferentially spaced and uniformly distributed, and the first protrusions (411) are arranged on the first elastic strips (412).

4. The lateral releasing device according to claim 3, wherein a first shoulder (12) is provided at the upper joint (1), and the first shoulder (12) is configured to abut against the inner sleeve (3) after the engagement of the elastic member (11) and the lower joint (2) is released, so that the upper joint (1) moves up along with the inner sleeve (3).

5. The lateral releasing device according to claim 4, wherein a second protrusion (111) is provided at the lower end of the elastic member (11), and a second groove (21) for engaging with the second protrusion (111) is provided at the inner wall of the lower joint (2).

6. The lateral releasing device according to claim 5, wherein a spring collar (61) is arranged on the surface of the elastic member (11) contacting the inner sleeve (3), the upper end of the spring collar (61) is a plane, the lower end is a slope, and a spring slot (62) for accommodating the spring collar (61) is arranged on the inner sleeve (3).

7. The lateral releasing device of claim 6, wherein the elastic member (11) comprises a plurality of second elastic strips (112) which are circumferentially spaced and uniformly distributed, and the second protrusions (111) are arranged on the second elastic strips (112).

8. The lateral well releasing device according to any one of claims 1 to 7, wherein a plurality of plug blocks (71) are uniformly arranged on the outer wall of the upper joint (1) in the circumferential direction, and a plurality of plug grooves (72) for being matched with the plug blocks (71) are arranged on the outer wall of the lower joint (2).

9. The lateral releasing device of claim 8, wherein the indexing assembly (4) further comprises:

the spindle (42) is sleeved with the transposer (41), and a second shoulder (421) is arranged on the spindle (42);

a locking sleeve (43) sleeved on the mandrel (42), wherein the locking sleeve (43) is positioned above the second shoulder (421), the second shoulder (421) limits the locking sleeve (43) to move downwards,

wherein the upper part of the transposer (41) is connected with the locking sleeve (43) through threads.

10. The lateral releasing device of claim 9, wherein a set screw (45) is further provided between the index (41) and the locking sleeve (43) for preventing the index (41) from rotating relative to the locking sleeve (43).