A multi-core faucet

Abstract

The present invention relates to a device for oil well logging, and in particular to a multi-core faucet. The device comprises a connecting screw, and the two ends of the connecting screw are respectively designed with a positive thread and a negative thread, the upper end of the connecting screw is threadedly connected to the lower end of the upper joint, the lower end of the connecting screw is threadedly connected to the upper end of the external hexagonal connecting rod, the lower end of the external hexagonal connecting rod is connected to a tension rod, and the lower end of the tension rod is connected to the upper end joint of the main body. The present invention realizes that when replacing the tension rod, there is no need to disassemble the through-line, which is convenient for repair and maintenance, extends the length of the salvage shell, and improves the success rate of salvage. The thread at the connection between the salvage shell and the main body is protected by a sealing ring, mud cannot enter, and it is convenient to disassemble. The oil filling hole is designed to facilitate oiling the instrument and reduce pollution.

Description

Technical fields:

[0001] This invention relates to an oil well logging device, and more particularly to a multi-core auger. Background technology:

[0002] Multi-core connectors are essential quick-connect devices for cables and logging instruments in well logging production, preventing cable breakage when logging instruments become stuck downhole. Existing multi-core connectors have the following problems during use:

[0003] (1) The tension rod is an important mechanical component that prevents the cable from breaking when the instrument gets stuck during the logging process. It needs to be replaced frequently, and each time it needs to be replaced, the point-to-point multi-core through-line connection needs to be re-established, which is time-consuming and labor-intensive.

[0004] (2) When the instrument gets stuck, the retrieval shell is too short, resulting in a short contact area with the retrieval device, which leads to a low retrieval success rate.

[0005] (3) The shell threads are not protected during salvage. The work is carried out in mud, and it is very difficult to disassemble after the mud dries.

[0006] (4) The existing device does not have an oil filling hole. To fill the silicone oil, the outer shell needs to be disassembled and retrieved before filling the balance capsule with oil. The silicone oil is prone to leakage, which is wasteful and pollutes the environment. Summary of the Invention:

[0007] The technical problem this invention aims to solve is to provide a multi-core manhole cover that eliminates the need to disassemble the through-line when replacing the pull rod, facilitating maintenance and repair. It also extends the length of the retrieval casing, improving the retrieval success rate. The threads at the connection between the retrieval casing and the main body are protected by a sealing ring, preventing mud from entering and facilitating disassembly. An oil injection hole is included for easy lubrication of the instrument, reducing contamination. This invention overcomes the shortcomings of existing multi-core manhole covers, which require disassembling the through-line when replacing the pull rod, resulting in time and labor costs; the retrieval casing is too short, leading to a low retrieval success rate; the threads of the retrieval casing lack protection, making disassembly difficult; and the absence of an oil injection hole, causing contamination and waste.

[0008] The technical solution adopted in this invention is as follows: a multi-core auger, comprising an upper connector, a retrieval shell, a main body, and a lower shell. The lower end of the upper connector is connected to a balancing capsule, and the lower end of the balancing capsule is connected to the main body. A through-line is connected between the lower end of the upper connector and the upper end of the main body via a sealing plug and a copper insert. The retrieval shell is fitted onto the outside of the balancing capsule and threadedly connected to the outer wall of the upper end of the main body. The lower end of the main body is connected to the lower shell. The invention also includes a connecting screw, with positive and negative threads designed at both ends. The upper end of the connecting screw is threadedly connected to the lower end of the upper connector, and the lower end of the connecting screw is threadedly connected to the upper end of an external hexagonal connecting rod. The lower end of the external hexagonal connecting rod is connected to a tension rod, and the lower end of the tension rod is connected to the upper connector of the main body. The outer wall of the connecting screw is designed with an external hexagonal... The square outer wall has an upper hexagonal locking sleeve and a lower hexagonal locking sleeve fitted at the upper and lower ends of the connecting screw, respectively. The upper inner wall of the upper hexagonal locking sleeve is fitted onto the lower end of the upper connector and matches the outer hexagonal outer wall of the lower end of the upper connector. The lower inner wall of the lower hexagonal locking sleeve is fitted onto the outer hexagonal connecting rod and matches the outer hexagonal outer wall of the outer hexagonal connecting rod. Two anti-detachment half-rings are set between the upper and lower hexagonal locking sleeves and are fitted onto the connecting screw. A hexagonal locking sleeve is set at the lower end of the lower hexagonal locking sleeve. The hexagonal locking sleeve is fitted onto the outer hexagonal connecting rod, the tension rod, and the upper end connector of the main body. The upper inner wall of the hexagonal locking sleeve matches the outer hexagonal outer wall of the outer hexagonal connecting rod, and the lower inner wall of the hexagonal locking sleeve matches the outer hexagonal outer wall of the upper end connector of the main body.

[0009] Sealing rings are provided at both ends of the threaded section connecting the salvage shell and the upper outer wall of the main body. The two sealing rings are respectively placed between the salvage shell and the main body and can seal the threaded section connecting the salvage shell and the main body.

[0010] An oil injection hole is provided on the side wall of the main body, which is connected to the inside of the balance capsule through an oil injection channel.

[0011] The salvaged outer shell is 520mm long.

[0012] The beneficial effects of this invention are:

[0013] (1) The connection structure of the tension bar was redesigned so that the through line could be disassembled when the tension bar was replaced, which reduced the workload and saved maintenance time.

[0014] (2) The length of the salvage shell is increased so that the contact part with the salvage device is extended, which increases the friction and improves the salvage success rate;

[0015] (3) Add a sealing ring to each side of the thread at the connection between the salvage shell and the main body to prevent mud from entering the thread and facilitate disassembly;

[0016] (4) An oil filling hole is provided on the main body of the instrument. If silicone oil needs to be added, there is no need to disassemble and retrieve the outer shell. Oil can be added directly from the oil filling hole, which saves time and effort and will not pollute the environment. Attached image description:

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed implementation method:

[0019] like Figure 1 As shown, a multi-core auger includes an upper connector 1, a retrieval shell 2, a main body 13, and a lower shell 14. The lower end of the upper connector 1 is connected to a balancing capsule 3, and the lower end of the balancing capsule 3 is connected to the main body 13. A sealing plug and a copper plug are used to connect the lower end of the upper connector 1 and the upper end of the main body 13 via a through-line 7. The retrieval shell 2 is fitted onto the outside of the balancing capsule 3 and threaded onto the upper outer wall of the main body 13. The lower end of the main body 13 is connected to the lower shell 14. The feature is that it also includes a connecting screw 4, with positive and negative threads designed at both ends. The upper end of the connecting screw 4 is threaded to the lower end of the upper connector 1, and the lower end of the connecting screw 4 is threaded to the upper end of an external hexagonal connecting rod 8. The lower end of the external hexagonal connecting rod 8 is connected to a tension rod 10, and the lower end of the tension rod 10 is connected to the upper connector of the main body 13. The outer wall of the connecting screw 4 is designed as... The outer hexagonal wall has an upper hexagonal locking sleeve 15 and a lower hexagonal locking sleeve 6 respectively fitted at the upper and lower ends of the connecting screw 4. The upper inner wall of the upper hexagonal locking sleeve 15 is fitted onto the lower end of the upper connector 1 and matches the outer hexagonal outer wall of the lower end of the upper connector 1. The lower inner wall of the lower hexagonal locking sleeve 6 is fitted onto the outer hexagonal connecting rod 8 and matches the outer hexagonal outer wall of the outer hexagonal connecting rod 8. Two anti-detachment half-rings 5 ​​are provided between the upper hexagonal locking sleeve 15 and the lower hexagonal locking sleeve 6, and the two anti-detachment half-rings 5 ​​are fitted onto the connecting screw 4. A hexagonal locking sleeve 9 is provided at the lower end of the lower hexagonal locking sleeve 6. The hexagonal locking sleeve 9 is fitted onto the outer hexagonal connecting rod 8, the tension rod 10 and the upper end of the main body 13. The upper inner wall of the hexagonal locking sleeve 9 matches the outer hexagonal outer wall of the outer hexagonal connecting rod 8, and the lower inner wall of the hexagonal locking sleeve 9 matches the outer hexagonal outer wall of the upper end of the main body 13.

[0020] Sealing rings 11 are provided at both ends of the threaded section connecting the salvage shell 2 and the upper outer wall of the main body 13. The two sealing rings 11 are respectively located between the salvage shell 2 and the main body 13 and can seal the threaded section connecting the salvage shell 2 and the main body 13; prevent mud from entering the threads and facilitate the disassembly of the salvage shell 2.

[0021] An oil injection hole 12 is provided on the side wall of the main body 13. This oil injection hole 12 is connected to the inside of the balance capsule 3 through an oil injection channel. The balance capsule 3 is filled with silicone oil to balance the pressure between the instrument and the wellbore, and to protect the penetration line 7 and the tension rod 10. By adding an oil injection hole 12 to the instrument main body 13, silicone oil can be injected into the balance capsule 3 without disassembling the retrieval shell 2, thus avoiding silicone oil leakage and saving time and effort.

[0022] The retrieval casing 2 is 520mm long, which is longer than that of a conventional multi-core auger. Retrieval casing 2 is used for retrieving the instrument when it gets stuck, and also to protect the balance capsule 3. The increased length of retrieval casing 2 increases the contact length with the retrieval device, enhances friction, and improves the retrieval success rate.

[0023] When in use, the upper connector 1 is connected to the cable, and the lower outer casing 14 is connected to the logging instrument.

[0024] The connecting screw 4 of this invention has both positive and negative threads at its ends. Without disassembling the through-line 7 between the main body 13 and the upper connector 1, the connecting screw 4 can be directly rotated to simultaneously disconnect the connecting screw 4 from the upper connector 1 and the external hexagonal connecting rod 8. After replacing the tension bar 10, the connecting screw 4 can be rotated again to reconnect them as a single unit. This method of replacing the tension bar does not require disassembling the through-line, making it convenient and labor-saving.

[0025] When replacing the tension rod 10, first remove the anti-detachment half ring 5, then move the upper hexagonal locking sleeve 15 and the lower hexagonal locking sleeve 6 back to the middle position of the connecting screw 4, and then you can rotate the connecting screw 4.

[0026] The upper hexagonal locking sleeve 15 protects the connection between the upper connector 1 and the connecting screw 4 from rotating on its own during instrument use. The lower hexagonal locking sleeve 6 protects the connection between the connecting screw 4 and the outer hexagonal connecting rod 8 from rotating on its own during instrument use. The anti-detachment half-ring 5 ensures that the upper hexagonal locking sleeve 15 and the lower hexagonal locking sleeve 6 are fixed in their original positions and do not move up or down, so that the upper hexagonal locking sleeve 15 and the lower hexagonal locking sleeve 6 play a protective role. The hexagonal locking sleeve 9 protects the connection between the two ends of the tension rod 10 from rotating on its own during instrument use.

[0027] It is understood that the above specific description of the present invention is only for illustrating the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of the present invention.

Claims

1. A multi-core faucet, comprising an upper joint (1), a salvage shell (2), a main body (13) and a lower shell (14), wherein the lower end of the upper joint (1) is connected to a balancing capsule (3), the lower end of the balancing capsule (3) is connected to the main body (13), a through-wire (7) is connected between the lower end of the upper joint (1) and the upper end of the main body (13) via a sealing plug and a copper plug, the salvage shell (2) is sleeved on the outer side of the balancing capsule (3) and is threadedly connected to the outer wall of the upper end of the main body (13), and the lower end of the main body (13) is connected to the lower shell (14); characterized in that: The invention also comprises a connecting screw (4), wherein the two ends of the connecting screw (4) are respectively designed with a positive thread and a negative thread, the upper end of the connecting screw (4) is threadedly connected to the lower end joint of the upper joint (1), the lower end of the connecting screw (4) is threadedly connected to the upper end of the external hexagonal connecting rod (8), the lower end of the external hexagonal connecting rod (8) is connected to the tension rod (10), the lower end of the tension rod (10) is connected to the upper end joint of the main body (13), the outer wall of the connecting screw (4) is designed to be an external hexagonal outer wall, the upper and lower ends of the connecting screw (4) are respectively covered with an upper hexagonal locking sleeve (15) and a lower hexagonal locking sleeve (6), the upper inner wall of the upper hexagonal locking sleeve (15) is covered on the lower end joint of the upper joint (1) and is connected to the external hexagonal locking sleeve of the lower end joint of the upper joint (1). The outer walls thereof match each other; the lower inner wall of the lower hexagonal locking sleeve (6) is sleeved on the outer hexagonal connecting rod (8) and matches the outer hexagonal outer wall of the outer hexagonal connecting rod (8); two anti-slipping half rings (5) are arranged between the upper hexagonal locking sleeve (15) and the lower hexagonal locking sleeve (6); the two anti-slipping half rings (5) are sleeved on the connecting screw (4); a hexagonal locking sleeve (9) is arranged at the lower end of the lower hexagonal locking sleeve (6); the hexagonal locking sleeve (9) is sleeved on the outer hexagonal connecting rod (8), the tension rod (10) and the upper end joint of the main body (13); the upper inner wall of the hexagonal locking sleeve (9) matches the outer hexagonal outer wall of the outer hexagonal connecting rod (8); and the lower inner wall of the hexagonal locking sleeve (9) matches the outer hexagonal outer wall of the upper end joint of the main body (13); Sealing rings (11) are respectively arranged at the upper and lower ends of the threaded section connecting the salvage shell (2) and the upper outer wall of the main body (13); the two sealing rings (11) are respectively arranged between the salvage shell (2) and the main body (13) and are capable of sealing the threaded section connecting the salvage shell (2) and the main body (13); An oil injection hole (12) is provided on the side wall of the main body (13), and the oil injection hole (12) is connected to the interior of the balancing capsule (3) through an oil injection channel; The salvage shell (2) is 520 mm in length.

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