Novel inverse well-flushing positioning bypass

Abstract

The utility model discloses a novel backwashing well positioning bypass which comprises a main body assembly, a second pipeline is arranged at one end of the main body assembly, and a connecting assembly is arranged at the end, away from the main body assembly, of the second pipeline. The main body assembly comprises a first pipeline, a first connector is integrally formed at one end of the first pipeline, the first connector is connected to one end of a second pipeline in a threaded and sleeved mode, a protruding piece is arranged on the surface of the first pipeline, a pressing piece is arranged on the protruding piece, and a screw used for achieving detachable connection is arranged between the pressing piece and the protruding piece. The main body assembly is composed of the first pipeline, the first connector, the protruding piece and the pressing piece, the cable can be protected at the specific position while the requirement for positioning of an upper pipe column and a lower pipe column of a backwashing well can be met, and the use safety of a downhole tool can be improved.

Description

Technical Field

[0001] This utility model relates to the field of oil extraction technology, and in particular to a novel backwash well positioning bypass. Background Technology

[0002] Well washing refers to the process of injecting a washing medium through a pump into the wellbore or drill pipe during well workover operations, as required by engineering projects. This process carries the substances (liquid, solid, and gaseous phases) within the wellbore to the surface, thereby altering the properties of the medium within the wellbore to meet operational requirements. Well washing is classified into forward circulation well washing, reverse circulation well washing, and mixed method well washing.

[0003] In oil and gas well production enhancement operations, various downhole tools are often required. At the packer, the upper and lower tubing strings are positioned by the backwash well positioning bypass, and a backwash well passage is reserved.

[0004] The existing announcement number CN112855095B discloses a downhole in-situ deployable online profile control device, tubing string, and method. The downhole in-situ deployable online profile control tubing string provided is installed inside the casing and includes, from top to bottom, a downhole safety valve, a cable packer, a Y-type assembly, a submersible electric pump unit, a positioning bypass, a first insertion seal, a second insertion seal, and a guide plug, all arranged sequentially on the tubing. An original well top packer is installed between the positioning bypass and the wellbore, and the positioning bypass is positioned in conjunction with the original well top packer. The annular boss of the positioning bypass has four fluid passages evenly distributed around its circumference.

[0005] Although the aforementioned in-situ deployable online profile control device, tubing string, and method can switch between water injection and profile control operations without moving the tubing string, avoiding multiple tubing string trips and making full use of the single well water source to achieve in-situ online profile control of the same well's gravity-flow water injection well, its positioning bypass structure is relatively simple. Currently, most downhole tools require cable operation, and its positioning bypass is insufficient to meet the usage requirements.

[0006] Therefore, a novel backwash well positioning bypass is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a novel backwash well positioning bypass to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] A novel backwash well positioning bypass includes:

[0010] The main component has a second pipe at one end, and a connecting component at the end of the second pipe away from the main component.

[0011] The main component includes a first pipe, one end of which is integrally formed with a first connector. The first connector is threaded onto one end of a second pipe. The surface of the first pipe is provided with a protrusion, and a clamping member is provided on the protrusion. A screw for detachable connection is provided between the clamping member and the protrusion.

[0012] The protrusion includes an annular boss integrally formed on the surface of the first pipe. The surface of the annular boss has four through slots that are equidistantly distributed in an annular pattern. Two of the through slots that are arranged opposite each other have ribs at the center of their inner cavities. The ribs and the corresponding through slots form a cable groove. The clamping member is provided on each rib.

[0013] As a preferred technical solution, the rib and the annular boss are integrally formed, and the rib has a screw hole adapted to the screw, and the end of the screw is threaded into the inner cavity of the screw hole.

[0014] As a preferred technical solution, the annular boss has a stepped surface A in the middle and stepped surfaces B at both ends.

[0015] As a preferred technical solution, the clamping member includes a clamping block that is detachably connected to the surface of the rib by a screw and a screw hole, and the clamping block has a through hole for the screw to pass through.

[0016] As a preferred technical solution, the clamping member further includes a countersunk hole formed on the clamping block and communicating with the through hole, and the screw head is placed in the countersunk hole.

[0017] As a preferred technical solution, the middle part of the surface of the pressing block is provided with a step surface C that matches the step surface A, and both sides of the pressing block are provided with step surfaces D that match the step surface B, and the step surfaces A, B, C and D are respectively inclined.

[0018] As a preferred technical solution, the outer surfaces of the pressure block and the annular boss are located on the same annular surface, the step surface C and the step surface A are located on the same annular surface, and the step surface D and the step surface B are located on the same annular surface.

[0019] As a preferred technical solution, the connecting assembly includes a second connector threaded onto the end of the second pipe away from the first connector, and a third connector integrally formed at the end of the second connector away from the second pipe.

[0020] This utility model has at least the following beneficial effects:

[0021] This application uses a first pipe, a first connector, a protrusion, and a clamping component to form the main assembly, which can not only meet the positioning requirements of the upper and lower tubing strings in the backwash well, but also protect the cable at a specific location, thus helping to improve the safety of downhole tools. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the backwash well positioning bypass of this utility model;

[0023] Figure 2 This is a cross-sectional schematic diagram of the backwash well positioning bypass of this utility model;

[0024] Figure 3 This is an exploded view of the main components of the backwash well positioning bypass of this utility model.

[0025] In the diagram: 100, main component; 110, first pipe; 120, first connector; 130, protrusion; 131, annular boss; 1311, step surface A; 1312, step surface B; 132, through groove; 133, rib; 134, screw hole; 140, clamping component; 141, pressure block; 1411, step surface C; 1412, step surface D; 142, countersunk hole; 150, screw; 200, second pipe; 300, connecting component; 310, second connector; 320, third connector. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-3This utility model provides a novel backwash well positioning bypass, including a main component 100, a second pipe 200, and a connecting component 300. The main component 100 and the second pipe 200 are respectively disposed at both ends of the second pipe 200. The main component 100 includes a first pipe 110, one end of which is integrally formed with a first connector 120, which is threaded onto one end of the second pipe 200. The surface of the first pipe 110 is provided with a protrusion 130, and a clamping member 14 is provided on the protrusion 130. 0. A screw 150 is provided between the clamping member 140 and the protrusion 130 for achieving a detachable connection; the protrusion 130 includes an annular boss 131 integrally formed on the surface of the first pipe 110. The surface of the annular boss 131 is provided with four through slots 132 distributed in an annular pattern at equal intervals. Among them, two through slots 132 arranged opposite each other are provided with ribs 133 at the center of their inner cavities. Two parallel cable grooves are formed between the ribs 133 and the corresponding through slots 132. The clamping member 140 is provided with one of each rib 133.

[0028] The rib 133 and the annular boss 131 are integrally formed. The rib 133 has a screw hole 134 that matches the screw 150. The end of the screw 150 is threaded into the inner cavity of the screw hole 134. Through the cooperation of the screw 150 and the screw hole 134, a detachable connection between the rib 133 and the clamping member 140 can be realized, which makes it convenient to place or remove the cable in the cable tray.

[0029] The annular boss 131 has a stepped surface A1311 in the middle of its surface and stepped surfaces B1312 at both ends. The stepped surfaces A1311 and B1312 work together to position the upper and lower tubular columns in conjunction with the packer.

[0030] The clamping component 140 includes a clamping block 141 that is detachably connected to the surface of the rib 133 by a screw 150 and a screw hole 134. The clamping block 141 has a through hole for the screw 150 to pass through. The clamping block 141 can clamp the cable in the cable trough to prevent the cable from coming out of the cable trough and ensure the stability of the cable placed in the cable trough.

[0031] The clamping component 140 also includes a countersunk hole 142 formed on the clamping block 141 and communicating with the through hole. The screw head of the screw 150 is placed in the countersunk hole 142. The countersunk hole 142 can ensure that the screw head of the screw 150 is completely hidden inside the clamping block 141, improving the overall aesthetics and safety.

[0032] The pressure block 141 has a stepped surface C1411 in the middle of its surface that matches the stepped surface A1311, and stepped surfaces D1412 that match the stepped surface B1312 on both sides of the pressure block 141. The stepped surfaces A1311, B1312, C1411 and D1412 are respectively inclined. Through the combined use of the stepped surfaces A1311, B1312, C1411 and D1412, they can be used with the packer to position the upper and lower tubing of the backwash well.

[0033] Among them, the outer surfaces of the pressure block 141 and the annular boss 131 are located on the same annular surface, the step surface C1411 and the step surface A1311 are located on the same annular surface, and the step surface D1412 and the step surface B1312 are located on the same annular surface.

[0034] The connecting component 300 includes a second connector 310 threaded onto the end of the second pipe 200 away from the first connector 120, and a third connector 320 integrally formed at the end of the second connector 310 away from the second pipe 200.

[0035] The working principle of this utility model is as follows: the third connector 320 and the first pipe 110 are connected to the oil pipe respectively, the protrusion 130 is positioned in conjunction with the packer, the cable is placed in the cable groove, and the pressure block 141 is placed on the protruding rib 133 so that the pressure block 141 restricts the cable. Then, the screw 150 is passed through the through hole and screwed into the corresponding screw hole 134 so that the pressure block 141 is fixed on the protruding rib 133, thus completing the protection of the specific position of the cable. The other two through grooves 132 can be used to establish a communication channel between the water source layer and the casing.

[0036] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel backwash well positioning bypass, characterized in that, include: The main component (100) has a second pipe (200) at one end, and a connecting component (300) is provided at the end of the second pipe (200) away from the main component (100); The main component (100) includes a first pipe (110), one end of which is integrally formed with a first connector (120), the first connector (120) being threaded onto one end of a second pipe (200), the surface of the first pipe (110) being provided with a protrusion (130), the protrusion (130) being provided with a clamping member (140), and a screw (150) for achieving a detachable connection being provided between the clamping member (140) and the protrusion (130). The protrusion (130) includes an annular boss (131) integrally formed on the surface of the first pipe (110). The surface of the annular boss (131) is provided with four through slots (132) distributed in an annular pattern at equal intervals. Two of the through slots (132) arranged opposite to each other are provided with ribs (133) at the center of their inner cavities. The ribs (133) and the corresponding through slots (132) form a cable groove. The clamping member (140) is provided on each rib (133).

2. The novel backwashing well positioning bypass according to claim 1, characterized in that: The rib (133) and the annular boss (131) are integrally formed. The rib (133) has a screw hole (134) adapted to the screw (150). The end of the screw (150) is threaded into the inner cavity of the screw hole (134).

3. The novel backwashing well positioning bypass according to claim 2, characterized in that: The annular boss (131) has a stepped surface A (1311) in the middle of its surface, and stepped surfaces B (1312) are provided at both ends of the annular boss (131).

4. The novel backwashing well positioning bypass according to claim 3, characterized in that: The clamping member (140) includes a clamping block (141) that is detachably connected to the surface of the rib (133) by a screw (150) and a screw hole (134). The clamping block (141) has a through hole through which the screw (150) passes.

5. The novel backwashing well positioning bypass according to claim 4, characterized in that: The clamping member (140) also includes a countersunk hole (142) formed on the clamping block (141) and communicating with the through hole, and the screw head of the screw (150) is placed in the countersunk hole (142).

6. The novel backwashing well positioning bypass according to claim 5, characterized in that: The pressure block (141) has a step surface C (1411) in the middle of its surface that is adapted to the step surface A (1311), and both sides of the pressure block (141) have step surfaces D (1412) that are adapted to the step surface B (1312). The step surfaces A (1311), B (1312), C (1411) and D (1412) are respectively inclined.

7. The novel backwashing well positioning bypass according to claim 6, characterized in that: The outer surfaces of the pressure block (141) and the annular boss (131) are located on the same annular surface, the step surface C (1411) and the step surface A (1311) are located on the same annular surface, and the step surface D (1412) and the step surface B (1312) are located on the same annular surface.

8. The novel backwashing well positioning bypass according to claim 7, characterized in that: The connecting assembly (300) includes a second connector (310) threaded onto the end of the second pipe (200) away from the first connector (120), and a third connector (320) integrally formed on the end of the second connector (310) away from the second pipe (200).

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