A cable through packer

Abstract

This utility model discloses a cable-passing packer, comprising an anchor body, a short section, a central tube, a cylinder body, and a liner. The anchor body has an eccentric through hole and several cable-passing through holes. A countersunk hole is located at the right end of the anchor body. The short section and the central tube are respectively sealed and fixedly installed at both ends of the cable-passing through holes. The liner body is sealed and fixedly installed within the countersunk hole. The cylinder body is sealed and fixedly fitted onto the anchor body. The combination of the anchor body and the liner body, together with the central tube, forms a cable-passing area identical to the cable-passing through holes. The packer internally provides a cable-passing area for a whole bundle of cables, as well as branch cables with different functions passing through the cable-passing through holes to connect to different functional devices. The anchor body and the liner body are assembled into a mandrel, facilitating the machining and shaping of the eccentric through hole and the cable-passing through holes on the anchor body. The cable-passing area formed between the central tube and the liner body provides comprehensive protection for the cables, reducing the requirements for the corrosion resistance of the circuit protection sleeve.

Description

Technical Field

[0001] This utility model belongs to the field of well completion tool technology, and in particular relates to a cable packer. Background Technology

[0002] The through-cable packer is a single-pass, single-channel, hydraulically set packer equipped with dual heads, designed to reduce the overall cost of ESP completion operations. The packer is mounted on the tubing string, preserving the complete production tubing inner diameter while allowing passage for cables and control lines. A suitably sized cable adapter assembly is installed within the packer and subsequently connected to the pressure setting device. The complete assembly is lowered to the predetermined depth via cable or tubing. Existing through-circuit packers have cable protection housings on the outer walls of the mandrel, cylinder, and lower connector, with a cable passage channel inside the circuit protection housing. This structure cannot provide comprehensive cable protection and requires high corrosion resistance from the cable sheath. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a cable sealer that can provide comprehensive protection for cables.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a cable packer, comprising an anchor body, a short section, a central tube, a cylinder body, and a liner; The anchor body has an eccentric through hole and several cable through holes. The right end of the anchor body has a countersunk hole. The short section and the central tube are respectively sealed and fixed at both ends of the cable through holes, and the liner is sealed and fixed in the countersunk hole. The liner is slidably fitted with a connector, an upper rubber sleeve seat, a lower rubber sleeve seat, a rubber sleeve assembly, an upper cone, a lower cone, and a slip assembly. The rubber sleeve assembly is pressed between the upper rubber sleeve seat and the lower rubber sleeve seat, and the slip assembly is pressed between the upper cone and the lower cone. The upper cone is in contact with the connector, and the lower rubber sleeve seat is in contact with the upper cone. The cylinder body is sealed and fixedly installed on the anchor body, and the piston is also slidably sealed and installed on the liner. A hydraulic zone is formed between the liner and the cylinder body. The piston and the connecting body are both placed in the hydraulic zone. The outer wall of the piston is slidably sealed and installed with the inner wall of the cylinder body. The anchor body and the cylinder body form a liquid injection channel that is connected to the hydraulic zone. The connecting body is fixed to the cylinder body by the first shear pin, and the lower cone is fixed to the liner by the second shear pin; The combination of the anchor body and the liner tube forms a cable passage area with the same as the cable passage hole between them and the central tube.

[0005] Preferably, a locking ring is slidably installed on the liner, with the left and right ends of the locking ring abutting against the connecting body and the upper rubber sleeve seat, respectively. The locking ring and the liner are equipped with limit teeth, which restrict the locking ring from moving to the left.

[0006] Preferably, a cavity area is formed between the connector and the liner. The liner is slidably fitted with a spring and washers. The two washers are located on both sides of the spring, and the spring acts on the two washers. The two washers are respectively connected to the connector and the upper rubber sleeve seat.

[0007] Preferably, a liner cap is fixedly fitted to the outer end of the liner.

[0008] Preferably, a retaining ring is fixedly installed on the liner, and a limiting protrusion that cooperates with the retaining ring is provided on the inner wall of the left end of the connector.

[0009] Compared with the prior art, the advantages of this utility model are: the packer has an internal cable passage area for a whole cable bundle, and separate cable bundles with different functions pass through cable through holes to connect to different functional devices. The anchor body and the liner are assembled into a mandrel, which facilitates the processing and shaping of the eccentric through holes and cable through holes on the anchor body. The cable passage area formed between the central tube and the liner can provide comprehensive protection for the cable, reducing the requirements for the corrosion resistance of the circuit protection sleeve. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Figure 1 This is a cross-sectional view of the present invention.

[0012] Figure 2 This is a 3D view of the anchor.

[0013] Figure 3 yes Figure 1 Enlarged structural diagram at point M.

[0014] Figure 4 yes Figure 1 Enlarged structural diagram at point N. Detailed Implementation

[0015] The present invention will now be described in detail with reference to specific embodiments: like Figures 1 to 4 The cable packer shown includes an anchor body 1, a short section 2, a central tube 3, a cylinder 4, and a liner 9; The anchor body 1 has an eccentric through hole 11 and several cable through holes 12. The right end of the anchor body 1 has a countersunk hole 10. The short section 2 and the central tube 3 are respectively sealed and fixed at both ends of the cable through hole 12, and the liner 9 is sealed and fixed in the countersunk hole 10. The liner 9 is slidably fitted with a connector 5, an upper rubber sleeve seat 61, a lower rubber sleeve seat 62, a rubber sleeve assembly 64, an upper cone 71, a lower cone 72, and a slip assembly 73. The rubber sleeve assembly 64 is pressed between the upper rubber sleeve seat 61 and the lower rubber sleeve seat 62, and the slip assembly 73 is pressed between the upper cone 71 and the lower cone 72. The upper cone 71 is in contact with the connector 5, and the lower rubber sleeve seat 62 is in contact with the upper cone 71. The cylinder body 4 is sealed and fixedly installed on the anchor body 1. The piston 42 is also slidably and sealedly installed on the liner 9. A hydraulic zone is formed between the liner 9 and the cylinder body 4. The piston 42 and the connecting body 5 are both placed in the hydraulic zone. The outer wall of the piston 42 is slidably and sealedly installed with the inner wall of the cylinder body 4. The anchor body 1 and the cylinder 4 form an injection channel 41 that is connected to the hydraulic zone. The connecting body 5 is fixed to the cylinder body 4 by the first shear pin, and the lower cone 72 is fixed to the liner 9 by the second shear pin; The combination of anchor body 1 and liner 9 forms a cable passage area 31 with the central tube 3, which is the same as the cable passage hole 12.

[0016] A locking ring 43 is slidably installed on the liner 9. The left and right ends of the locking ring 43 abut against the connecting body 5 and the upper glue tube seat 61, respectively. The locking ring 43 and the liner 9 are equipped with limit teeth 45. The limit teeth 45 restrict the locking ring 43 from moving to the left, so as to prevent the packer from moving to the left and resetting after being seated.

[0017] A cavity region 51 is formed between the connecting body 5 and the liner 9. The liner 9 is slidably fitted with a stacked spring 44 and washers. The two washers are located on both sides of the stacked spring 44. The stacked spring 44 acts on the two washers. The two washers are connected to the connecting body 5 and the upper glue tube seat 61 respectively. The elastic force of the stacked spring 44 presses the locking ring 43 tightly against the upper glue tube seat 61 to prevent the locking ring 43 from shaking due to the gap between the limiting serrations 45.

[0018] A liner cap 8 is fixedly installed at the outer end of the liner 9 to enhance the structural strength at the end of the liner 9.

[0019] A retaining ring 46 is fixedly installed on the liner 9. A limiting protrusion 53 that cooperates with the retaining ring 46 is provided on the inner wall of the left end of the connecting body 5. After the limiting protrusion 53 contacts the retaining ring 46, it restricts the extreme position of the connecting body 5 to the right, so as to prevent the connecting body 5 from coming out of the hydraulic area.

[0020] The entire cable bundle is placed within the cable passage area 31. Different functional sub-cables on the entire cable bundle pass through the cable passage hole 12 and are connected to different functional devices. Hydraulic fluid is injected into the hydraulic area through the injection channel 41, pushing the piston 42 and the connecting body 5 to move to the right. The connecting body 5 pushes the upper rubber sleeve seat 61, the lower rubber sleeve seat 62, the rubber sleeve assembly 64, the upper cone 71, the lower cone 72, and the slip assembly 73 to move to the right. During this process, the first and second shear pins are cut until the lower cone 72 contacts and limits contact with the liner cap 8. The upper cone 71 and the lower cone 72 cooperate to open and anchor the slip assembly 73 to the inner wall of the well. At this time, the lower rubber sleeve seat 62 moves to the right to its limit state. The connecting body 5 pushes the upper rubber sleeve seat 61 to the left to squeeze the rubber sleeve assembly 64, deforming it and squeezing it against the inner wall of the well, thus completing the packer setting.

[0021] This packer has an internal cable passage area for a full cable bundle, as well as cable through-holes for different functional cable bundles to connect to various functional devices. The anchor body and liner are assembled into a mandrel, facilitating the machining of the eccentric through-holes and cable through-holes on the anchor body. The cable passage area formed between the central tube and the liner provides comprehensive protection for the cable, reducing the requirements for the corrosion resistance of the circuit protection sleeve.

Claims

1. A cable packer, characterized in that: It includes an anchor body (1), a short section (2), a central tube (3), a cylinder body (4), and a liner (9); The anchor body (1) has an eccentric through hole (11) and several through holes (12) for passing cables. The right end of the anchor body (1) has a countersunk hole (10). The short section (2) and the central tube (3) are respectively sealed and fixed at both ends of the through holes (12) for passing cables. The liner (9) is sealed and fixed in the countersunk hole (10). The liner (9) is slidably fitted with a connector (5), an upper rubber sleeve seat (61), a lower rubber sleeve seat (62), a rubber sleeve assembly (64), an upper cone (71), a lower cone (72), and a slip assembly (73). The rubber sleeve assembly (64) is pressed between the upper rubber sleeve seat (61) and the lower rubber sleeve seat (62), and the slip assembly (73) is pressed between the upper cone (71) and the lower cone (72). The upper cone (71) is in contact with the connector (5), and the lower rubber sleeve seat (62) is in contact with the upper cone (71). The cylinder (4) is sealed and fixedly installed on the anchor (1), and the piston (42) is also slidably sealed and installed on the liner (9). A hydraulic zone is formed between the liner (9) and the cylinder (4). The piston (42) and the connecting body (5) are both placed in the hydraulic zone. The outer wall of the piston (42) is slidably sealed and installed with the inner wall of the cylinder (4). The anchor (1) and the cylinder (4) form an injection channel (41) that is connected to the hydraulic zone. The connecting body (5) is fixed to the cylinder body (4) by the first shear pin, and the lower cone (72) is fixed to the liner (9) by the second shear pin; The combination of the anchor body (1) and the liner (9) forms a cable passage area (31) that is the same as the cable passage hole (12) between the central tube (3).

2. The cable packer according to claim 1, characterized in that: A locking ring (43) is slidably fitted onto the liner (9). The left and right ends of the locking ring (43) abut against the connector (5) and the upper rubber sleeve seat (61) respectively. The locking ring (43) and the liner (9) are fitted with a limiting sawtooth (45), which restricts the locking ring (43) from moving to the left.

3. The cable packer according to claim 2, characterized in that: A cavity area (51) is formed between the connecting body (5) and the liner (9). The liner (9) is slidably fitted with a spring (44) and a washer. The two washers are located on both sides of the spring (44). The spring (44) acts on the two washers. The two washers are connected to the connecting body (5) and the upper rubber sleeve seat (61) respectively.

4. The cable packer according to claim 1, characterized in that: The outer end of the liner (9) is fixedly fitted with a liner cap (8).

5. The cable packer according to claim 1, characterized in that: A retaining ring (46) is fixedly installed on the liner (9), and a limiting protrusion (53) that cooperates with the retaining ring (46) is provided on the inner wall of the left end of the connector (5).

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