A crossover packer sleeve and double male sub installation

Abstract

The utility model discloses a sleeve and double male short section mounting structure crossing packer, including mandrel, double male short section and connecting sleeve, the eccentricity of mandrel is provided with center hole, and the first through -hole right -hand end of lower joint is fixed with the left end of double male short section in the way of interference fit, and the left end face of double male short section is abutted on the second limit shoulder, first cable perforation and second cable perforation coaxial communication. This mounting structure sets up eccentric center hole, first through -hole on mandrel, lower joint, sets up center hole, first through -hole with first cable perforation, second cable perforation independently, when pipeline passes through first cable perforation, second cable perforation, need not to use control pipeline protection device, only using rigid pipe to carry out protection guide to pipeline can, connecting sleeve is connected with mandrel, lower joint fixedly connected, can increase the firmness of lower joint and mandrel connection.

Description

Technical Field

[0001] This utility model belongs to the field of packer technology for well completion tools, and in particular relates to the sleeve and double male short section installation structure for crossing packers. Background Technology

[0002] A through packer is a special packer that allows cables, hydraulic control lines, or fiber optic cables to pass through smoothly. It integrates production control and real-time monitoring functions downhole. The control line drives the surface-controlled downhole safety valve (SCSSV), ensuring the efficient operation of downhole safety devices. High-quality control lines conforming to ASTM standards can be provided to meet specific customer application needs, supporting a variety of metal materials, suitable for various complex or harsh operating conditions, and meeting diverse oil and gas well operation requirements. The control line protection device secures the control line within the mandrel's center hole, preventing loosening or displacement during installation. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a sleeve and double male short section installation structure for a through-packer with cable perforation and spindle center hole set separately, which eliminates the need for pipeline protection devices and reduces production costs.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a sleeve and double male short section installation structure for a packer, including a mandrel, double male short sections and a connecting sleeve, the mandrel having an eccentrically provided central hole, a first cable through hole on one side of the thicker wall of the mandrel, a first through hole on the sleeve having an eccentrically provided through hole, an extension connector sleeve integrally formed on the left end of the sleeve, the extension connector sleeve and the first through hole being coaxially arranged to form a lower connector, a first limiting shoulder and a second limiting shoulder being provided at both ends of the through hole, a second cable through hole corresponding to the first cable through hole being provided on one side of the thicker wall of the sleeve, the through hole having an annular sealing groove, and a sealing ring being embedded in the annular sealing groove; The connecting sleeve is coaxially provided with a second through hole and a third through hole, and a third limiting shoulder is formed at the left end of the second through hole; The left end of the lower connector is fixedly sleeved on the mandrel through the first through hole with an interference fit. The right end face of the mandrel abuts against the first limiting shoulder. The left end of the double male short section is fixedly sleeved on the right end of the first through hole of the lower connector with an interference fit. The left end face of the double male short section abuts against the second limiting shoulder. The first cable hole and the second cable hole are coaxially connected.

[0005] Furthermore, the connecting sleeve is provided with a circumferential slit, which is located inside the second through hole near the third limiting shoulder.

[0006] Furthermore, the depth of the circumferential cut is 10%-20% of the wall thickness of the connecting sleeve.

[0007] Furthermore, the extension connector sleeve has a limiting groove on its outer wall, and the connecting sleeve has positioning pin holes arranged in a ring array. A positioning pin is fixedly installed in the positioning pin hole, and the lower part of the positioning pin is located in the limiting groove.

[0008] The connecting sleeve is fixedly fitted onto the mandrel through the third through hole with an interference fit, and the connecting sleeve is fixedly fitted onto the extension joint sleeve through the second through hole with an interference fit. Furthermore, the inner end of the limiting groove extends to the left end face of the sleeve.

[0009] Compared with the prior art, the advantages of this utility model are as follows: This installation structure has an eccentric center hole and a first through hole on the mandrel and the lower connector, and the side with the wall thickness is provided with a first cable through hole and a second cable through hole. This can not only ensure the overall structural strength of the mandrel and the lower connector, but also allow the center hole, the first through hole and the first cable through hole and the second cable through hole to be set independently. When the pipeline passes through the first cable through hole and the second cable through hole, there is no need to use a control pipeline protection device. Only a rigid tube is used to protect and guide the pipeline. The connecting sleeve is connected and fixed to the mandrel and the lower connector respectively, which can increase the firmness of the connection between the lower connector and the mandrel. Attached Figure Description

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

[0011] Figure 1 This is a perspective view of the utility model.

[0012] Figure 2 This is the right view of this utility model.

[0013] Figure 3 yes Figure 2 A sectional view along the AA direction.

[0014] Figure 4 It is a 3D view of the connecting sleeve.

[0015] Figure 5 This is a perspective view of the lower connector cross-section. Detailed Implementation

[0016] The present invention will now be described in detail with reference to specific embodiments: like Figures 1 to 5The sleeve and double male short section installation structure of the packer shown includes a mandrel 1, a double male short section 2 and a connecting sleeve 4. The mandrel 1 has an eccentrically provided center hole 10. The mandrel 1 has a first cable through hole 11 on one side of its wall thickness. The sleeve 31 has an eccentrically provided first through hole 32. An extension connector sleeve 30 is integrally formed on the left end of the sleeve 31. The extension connector sleeve 30 and the first through hole 32 are coaxially arranged to form a lower connector 3. The through hole 32 has a first limiting shoulder 36 and a second limiting shoulder 34 on its left and right ends. The sleeve 31 has a second cable through hole 37 on one side of its wall thickness, which corresponds to the first cable through hole 11. The through hole 32 has an annular sealing groove 33, and a sealing ring is embedded in the annular sealing groove 33. The connecting sleeve 4 is coaxially provided with a second through hole 44 and a third through hole 45, and a third limiting shoulder 41 is formed at the left end of the second through hole 44; The left end of the lower connector 3 is fixedly sleeved on the spindle 1 through the first through hole 32 with an interference fit. The right end face of the spindle 1 abuts against the first limiting shoulder 36. The left end of the double male short section 2 is fixedly sleeved on the right end of the first through hole 32 of the lower connector 3 with an interference fit. The left end face of the double male short section 2 abuts against the second limiting shoulder 34. The connecting sleeve 4 is fixedly fitted onto the spindle 1 through the third through hole 45 with an interference fit, and the connecting sleeve 4 is fixedly fitted onto the extension joint sleeve 30 through the second through hole 44 with an interference fit. The first cable through hole 11 and the second cable through hole 37 are coaxially connected.

[0017] The connecting sleeve 4 is provided with a ring cut 43, which is located inside the second through hole 44 near the third limiting shoulder 41. The ring cut 43 separates the second through hole 44 and the third through hole 45, so that the two are not affected by each other when they are squeezed and deformed, which can improve the firmness of the connection between the connecting sleeve 4 and the mandrel 1 and the extension joint sleeve 30.

[0018] The depth of the circumferential slit 43 is 13% of the wall thickness of the connecting sleeve 4, which can ensure the overall structural strength of the connecting sleeve 4 and prevent the second through hole 44 and the third through hole 45 from affecting each other when they are squeezed.

[0019] The extension sleeve 30 has a limiting groove 35 on its outer wall, and the connecting sleeve 4 has positioning pin holes 42 arranged in a ring array. A positioning pin is fixedly installed in the positioning pin hole 42, and the lower part of the positioning pin is located in the limiting groove 35, which further improves the firmness of the connection between the connecting sleeve 4 and the extension sleeve 30.

[0020] The inner end of the limiting groove 35 extends to the left end face of the sleeve 31, which facilitates the processing and shaping of the limiting groove 35.

[0021] During assembly, first, the connecting sleeve 4 is fixedly fitted onto the extension sleeve 30 of the lower connector 3 with an interference fit. A sealing ring is embedded in the annular sealing groove 33 of the lower connector 3. The guide rod is inserted into the first cable through hole 11 and the second cable through hole 37 to align and position the lower connector 3 with the spindle 1. Then, the combination of the lower connector 3 and the connecting sleeve 4 is fixedly fitted onto the spindle 1 with an interference fit. The positioning pin is fixedly pressed into the positioning pin hole 42 and the limiting groove 35. Finally, the double male short section 2 is pressed into the lower connector 3 with an interference fit.

Claims

1. A sleeve and double male short section mounting structure for a packer, characterized in that: Includes a mandrel (1), a double male short section (2) and a connecting sleeve (4). The mandrel (1) has an eccentrically provided center hole (10). The mandrel (1) has a first cable through hole (11) on one side of its wall thickness. The sleeve (31) has an eccentrically provided first through hole (32). The left end of the sleeve (31) is integrally formed with an extension connector sleeve (30). The extension connector sleeve (30) and the first through hole (32) are coaxially arranged to form a lower connector (3). The left and right ends of the through hole (32) are provided with a first limiting shoulder (36) and a second limiting shoulder (34). The sleeve (31) has a second cable through hole (37) corresponding to the first cable through hole (11) on one side of its wall thickness. The through hole (32) has an annular sealing groove (33). A sealing ring is embedded in the annular sealing groove (33). The connecting sleeve (4) is coaxially provided with a second through hole (44) and a third through hole (45), and a third limiting shoulder (41) is formed at the left end of the second through hole (44). The left end of the lower connector (3) is fixedly sleeved on the spindle (1) through the first through hole (32) in an interference fit manner. The right end face of the spindle (1) abuts against the first limiting shoulder (36). The left end of the double male short section (2) is fixedly sleeved on the right end of the first through hole (32) of the lower connector (3) in an interference fit manner. The left end face of the double male short section (2) abuts against the second limiting shoulder (34). The connecting sleeve (4) is fixedly fitted onto the spindle (1) through the third through hole (45) in an interference fit manner, and the connecting sleeve (4) is fixedly fitted onto the extension joint sleeve (30) through the second through hole (44) in an interference fit manner. The first cable hole (11) and the second cable hole (37) are coaxially connected.

2. The sleeve and double male short section mounting structure for the through packer according to claim 1, characterized in that: The connecting sleeve (4) is provided with a circumferential cut (43), which is located inside the second through hole (44) near the third limiting shoulder (41).

3. The sleeve and double male short section mounting structure for the through packer according to claim 2, characterized in that: The depth of the circumferential cut (43) is 10%-20% of the wall thickness of the connecting sleeve (4).

4. The sleeve and double male short section mounting structure for the through packer according to claim 1, characterized in that: The extension connector sleeve (30) has a limiting groove (35) on its outer wall, and the connecting sleeve (4) has positioning pin holes (42) arranged in a ring array. A positioning pin is fixedly installed in the positioning pin hole (42), and the lower part of the positioning pin is located in the limiting groove (35).

5. The sleeve and double male short section mounting structure for the through packer according to claim 4, characterized in that: The inner end of the limiting groove (35) extends to the left end face of the sleeve (31).

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