A split electrode connection structure and method of use

Abstract

The application relates to the technical field of oilfield logging, and discloses a split electrode connecting structure and a use method, which comprises a torpedo assembly, a horse collar assembly, an electrode wire, a first 15-core connecting plug assembly and a second 15-core connecting plug assembly; one end of the electrode wire is provided with a first connecting sleeve, and the other end is provided with a second connecting sleeve; the first connecting sleeve and the torpedo assembly are connected through the first 15-core connecting plug assembly; wherein one end of the first 15-core connecting plug assembly is arranged in the first connecting sleeve, and the other end is arranged in the torpedo assembly; the second connecting sleeve and the horse collar assembly are connected through the second 15-core connecting plug assembly; wherein one end of the second 15-core connecting plug assembly is arranged in the second connecting sleeve, and the other end is arranged in the horse collar assembly; the electrode horse collar and the cable horse collar can be converted only by inserting the 15-core connecting plug assembly, and the logging efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of oilfield logging technology, specifically to a detachable electrode connection structure and its usage method. Background Technology

[0002] A bridle is a connector used in oilfield logging to provide both tensile and electrical connections between the winch cable and downhole instruments. Currently, logging teams are equipped with two types of bridles: cable bridles, primarily used for acoustic, inductive, radioactive, and special logging tasks; and electrode bridles, mainly used for lateral, spontaneous potential, and electrode resistivity logging tasks. The cable bridle has a 7-core connector at the top that directly connects to the torpedo head at the bottom of the cable; the electrode bridle has a 15-core extended flexible electrode cable whose bottom is directly connected to the bridle, forming a 15-core electrical connection. The top has a 7-core torpedo connector that connects to the torpedo head at the bottom of the cable (7 of the 15 cores are cable conductors, 7 are internal electrode conductors, and 1 is a ground wire). To implement all logging processes, the logging team needs to be equipped with both types of bridles, resulting in redundant tool manufacturing; increased maintenance difficulty; and significant waste of raw material reserves, usage, and the team's time and energy.

[0003] The patent with patent number 201320316009.4, entitled "A Universal Multifunctional Well Logging Bridle Device for Cable Electrodes," specifically includes a bridle and an independent assembly of an extended soft electrode. The independent assembly of the extended soft electrode consists of an extended soft electrode and an upper electrode torpedo and a lower electrode torpedo, which are respectively fixed and locked to the upper and lower ends of the extended soft electrode. The upper electrode and the torpedo are equipped with 7-pin sockets, and the lower electrode and the torpedo are equipped with 15-pin plugs. However, because the upper electrode and the torpedo are equipped with 7-pin sockets, this patent can only meet the requirements of 7-pin plugs and cannot achieve 15-pin electrical connections. At the same time, because the upper electrode and the torpedo are equipped with 7-pin sockets, the bridle can only be of one specification, resulting in low versatility of electrode connections. Summary of the Invention

[0004] The purpose of this invention is to provide a separate electrode connection structure and a method of use, so as to solve the technical problem of how to improve the versatility of electrode connections in the prior art.

[0005] This invention is achieved through the following technical solution:

[0006] This invention provides a detachable electrode connection structure, including a torpedo assembly, a bridle assembly, an electrode wire, a first 15-pin connector assembly, and a second 15-pin connector assembly.

[0007] One end of the electrode wire is provided with a first connecting sleeve, and the other end is provided with a second connecting sleeve;

[0008] The first connecting sleeve is connected to the torpedo assembly via a first 15-pin connecting plug assembly; wherein, one end of the first 15-pin connecting plug assembly is disposed inside the first connecting sleeve, and the other end is disposed inside the torpedo assembly;

[0009] The second connecting sleeve is connected to the bridle assembly via a second 15-pin connector assembly, wherein one end of the second 15-pin connector assembly is disposed inside the second connecting sleeve and the other end is disposed inside the bridle assembly.

[0010] Preferably, the first 15-pin connector assembly includes a first 15-pin pin socket and a first 15-pin jack socket;

[0011] The first 15-pin socket is disposed inside the torpedo assembly, and the first 15-pin socket is disposed inside the first connecting sleeve.

[0012] The torpedo assembly and the first connecting sleeve are connected by a first 15-pin socket and a first 15-pin insertion socket.

[0013] Furthermore, the torpedo assembly includes a first protective spring, a first tapered connecting sleeve, a torpedo casing, and a first connecting wire;

[0014] The first protective spring, the first conical connecting sleeve, the first connecting wire, and the first 15-pin socket are all sequentially arranged inside the torpedo casing. The first protective spring is located at the top of the inner side of the torpedo casing. One end of the first conical connecting sleeve abuts against the first protective spring. One end of the first connecting wire is clamped inside the first conical connecting sleeve, and the other end is connected to the first 15-pin socket. The first 15-pin socket is inserted into the first 15-pin socket inside the torpedo casing.

[0015] Furthermore, the first connecting sleeve includes a first connecting housing, a second connecting wire, a second tapered connecting sleeve, and a second protective spring;

[0016] The second connecting line, the second tapered connecting sleeve, and the second protective spring are all disposed inside the first connecting housing;

[0017] The first 15-pin socket is located at the port of the first connecting housing and faces the first 15-pin socket. One end of the second connecting wire is connected to the first 15-pin socket, and the other end is clamped on the second conical connecting sleeve. The second conical connecting sleeve abuts against one end of the second protective spring, and the other end of the second protective spring abuts against the port of the first connecting housing. The port of the first connecting housing is connected to one end of the electrode wire.

[0018] Furthermore, the second conical connecting sleeve includes a first conical tube, a second conical tube, a third conical tube, and an outer conical frame;

[0019] The outer cone frame is disposed inside the first connecting shell, the third cone tube is sleeved inside the outer cone frame, and an insulating sleeve is provided between the third cone tube and the outer cone frame;

[0020] The second tapered tube is fitted inside the third tapered tube, and a gap is provided between the outer wall of the second tapered tube and the inner wall of the third tapered tube;

[0021] The first tapered tube is fitted inside the second tapered tube, and a gap is provided between the outer wall of the first tapered tube and the inner wall of the second tapered tube;

[0022] The ends of the second connecting wires are respectively clamped in the gaps between the second tapered tube and the third tapered tube, and between the first tapered tube and the second tapered tube.

[0023] Preferably, the second 15-pin connector assembly includes a second 15-pin socket and a second 15-pin jack socket;

[0024] The second 15-pin socket is disposed inside the second connecting sleeve, and the second 15-pin socket is disposed inside the bridle assembly;

[0025] The second connecting sleeve and the horse bridle assembly are connected by a second 15-pin socket and a second 15-pin insertion socket.

[0026] Furthermore, the second connecting sleeve includes a third protective spring, a second connecting housing, a third tapered connecting sleeve, and a third connecting wire;

[0027] The third protective spring, the third conical connecting sleeve, the third connecting wire, and the second core pin socket are all sequentially arranged inside the second connecting housing. The third protective spring is located at the inner top of the second connecting housing. One end of the third conical connecting sleeve abuts against the third protective spring. One end of the third connecting wire is clamped inside the third conical connecting sleeve, and the other end is connected to the second 15-core pin socket. The second 15-core pin socket is inserted into the second 15-core socket inside the second connecting housing.

[0028] Furthermore, the bridle assembly includes an upper connector, a weak point tension bar, a bridle housing, a lower connector, and a core pressure-bearing pin plate.

[0029] The upper connector, the weak point tension bar, the lower connector, and the core pressure-bearing pin plate are all located inside the horse bridle housing.

[0030] The second 15-pin socket is located at the port of the bridle housing and is oriented toward the second 15-pin socket.

[0031] Preferably, the first 15-pin connector assembly and the second 15-pin connector assembly are filled with insulating material, and their insertion holes both include a set of coarse pin holes and a set of fine pin holes.

[0032] Secondly, the present invention provides a method for using a detachable electrode connection structure, based on the aforementioned detachable electrode connection structure; comprising the following process:

[0033] The torpedo assembly is connected to the first connecting sleeve of the electrode wire via the first 15-pin connector assembly, and the bridle assembly is connected to the second connecting sleeve of the electrode wire via the second 15-pin connector assembly, thus completing the sequential connection of the torpedo assembly, bridle assembly, and electrode wire. When performing acoustic, inductive, or radioactive logging tasks, a 7-core connector consisting of 7 through-wire cables is used in both the first and second 15-pin connector assemblies, and the bridle assembly is the cable bridle. When performing lateral, spontaneous potential, or electrode resistivity logging tasks, a 15-core connector consisting of 7 through-wire cables, 7 internal electrode wires, and 1 ground wire is used in both the first and second 15-pin connector assemblies, and the bridle assembly is the electrode bridle.

[0034] Compared with the prior art, the present invention has the following beneficial technical effects:

[0035] This invention provides a detachable electrode connection structure. The torpedo assembly, the bridle assembly, and the electrode wire are sequentially connected via a first 15-pin connector assembly and a second 15-pin connector assembly. This effectively improves the versatility of the bridle among 15-pin connector assemblies, satisfying both 7-pin and 15-pin connector requirements. A first connecting sleeve is provided at one end of the electrode wire, and a second connecting sleeve at the other end. The first connecting sleeve connects to the first 15-pin connector assembly, and the second connecting sleeve connects to the second 15-pin connector assembly. No separate fabrication is required; the conversion between the electrode bridle and the cable bridle is achieved simply by connecting via the 15-pin connector assemblies, effectively improving logging efficiency.

[0036] Furthermore, the first 15-pin connector assembly includes a first 15-pin pin socket and a first 15-pin socket; the first 15-pin pin socket is disposed inside the torpedo assembly, and the first 15-pin socket is disposed inside the first connecting sleeve; the torpedo assembly and the first connecting sleeve are connected by the first 15-pin pin socket and the first 15-pin socket, and the connection between the torpedo assembly and the first connecting sleeve is realized through the first 15-pin pin socket and the first 15-pin socket. The plugging method is simple and greatly improves logging efficiency.

[0037] Furthermore, the second conical connecting sleeve includes a first conical tube, a second conical tube, a third conical tube, and an outer conical frame; wherein, the diameters of the outer conical frame, the third conical tube, the second conical tube, and the first conical tube are successively reduced, changing the appearance shape of the insulating sleeve. After locking the inner and outer steel wires of the cable respectively, the insulating sleeve and the outer conical frame are installed to provide support, but the overall size is reduced, so that the outer diameter of the corresponding electrode torpedo head is the same as that of the cable torpedo head; if it is used on the cable torpedo head and the insulating sleeve is not required, the outer diameter of the torpedo head can be made smaller to meet the needs of logging in small wellbores or small diameter casings.

[0038] Furthermore, the second 15-pin connector assembly includes a second 15-pin pin seat and a second 15-pin socket seat; the second 15-pin pin seat is disposed within the second connecting sleeve, and the second 15-pin socket seat is disposed within the bridle assembly; the second connecting sleeve and the bridle assembly are connected by the second 15-pin pin seat and the second 15-pin socket seat, and the connection between the bridle assembly and the second connecting sleeve is realized through the second 15-pin pin seat and the second 15-pin socket seat. The insertion method is simple and greatly improves logging efficiency.

[0039] Furthermore, the first 15-pin connector assembly 4 and the second 15-pin connector assembly 7 are filled with insulating material. Their insertion holes each include 7 sets of coarse pin holes and 8 sets of fine pin holes. A disc body with the same shape as the original pressure plate is used, with 7 φ1.6mm copper pins and 8 φ1.0mm copper pins arranged on it. The gaps are filled with PEEK material for insulation and pressure bearing, saving space for the 8 φ1.0mm copper pins. The φ1.6mm copper pins in the disc are used for current transmission and large-volume data signal transmission; the φ1.0mm copper pins are used for electrode data signals and small-volume data signal transmission. The pressure plate has the same external dimensions as the original magnetic column pressure plate. It can be installed in the same position as the original cable torpedo head, or in the same position as the torpedo head under the newly manufactured electrode line. It can also be installed with a double female copper plug as a 15-pin socket on the upper part of the torpedo head and universal bridle on the electrode line.

[0040] This invention provides a method for using a separate electrode connection structure, which splits the traditional integrated electrode bridle into two parts: a separate electrode wire and a universal bridle. The original 7-core pressure-bearing pin socket of the cable torpedo head is replaced with a 15-core pressure-bearing pin socket; the upper connector of the universal bridle is changed from the original 7-core socket to a 15-core socket; the electrode wire is made into a 15-core torpedo head at both ends, with the upper end being a 15-core socket socket for connecting to the 15-core cable torpedo; the lower end is a 15-core pressure-bearing pin socket for connecting to the 15-core bridle; the lower end of the electrode wire uses a 5-piece locking cable with an insulating sleeve inside the torpedo head to achieve insulation between the cable armor and the #10 cable core when using the electrode wire. Attached Figure Description

[0041] Figure 1This is a schematic diagram of the split electrode connection structure in an embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the 15-pin connector assembly structure in an embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the 15-pin socket structure in an embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of the second conical connecting sleeve structure in an embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of a separate electrode connection structure in another embodiment of the present invention;

[0046] In the diagram: 1-Torpedo assembly; 2-Breaker assembly; 3-Electrode wire; 4-First 15-pin connector assembly; 5-First connecting sleeve; 6-Second connecting sleeve; 11-First protective spring; 12-First conical connecting sleeve; 13-Torpedo casing; 14-First connecting wire; 21-Upper connector; 22-Weak point tension bar; 23-Breaker casing; 24-Lower connector; 25-15-pin pressure-bearing pin plate; 41-First 15-pin pin socket; 42-First 15-pin socket socket; 5 1-First connecting housing; 52-Second connecting wire; 53-Second conical connecting sleeve; 54-Second protective spring; 61-Third protective spring; 62-Second connecting housing; 63-Third conical connecting sleeve; 64-Third connecting wire; 7-Second 15-pin connector assembly; 71-Second 15-pin socket; 72-Second 15-pin socket; 531-First conical tube; 532-Second conical tube; 533-Third conical tube; 534-Outer conical frame; 535-Insulating sleeve. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0048] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0049] The present invention will now be described in further detail with reference to the accompanying drawings:

[0050] The purpose of this invention is to provide a separate electrode connection structure and a method of use, so as to solve the technical problem of how to improve the versatility of electrode connections in the prior art.

[0051] Example 1

[0052] See Figure 1 In one embodiment of the present invention, a detachable electrode connection structure is provided, including a torpedo assembly 1, a bridle assembly 2, an electrode wire 3, a first 15-pin connector assembly 4, and a second 15-pin connector assembly 7.

[0053] One end of the electrode wire 3 is provided with a first connecting sleeve 5, and the other end is provided with a second connecting sleeve 6;

[0054] The first connecting sleeve 5 is connected to the torpedo assembly 1 via a first 15-pin connecting plug assembly 4; wherein, one end of the first 15-pin connecting plug assembly 4 is disposed inside the first connecting sleeve 5, and the other end is disposed inside the torpedo assembly 1;

[0055] The second connecting sleeve 6 is connected to the horse bridle assembly 2 via the second 15-pin connecting plug assembly 7, wherein one end of the second 15-pin connecting plug assembly 7 is disposed inside the second connecting sleeve 6 and the other end is disposed inside the horse bridle assembly 2.

[0056] Specifically, according to Figure 2 As shown, the first 15-pin connector assembly 4 includes a first 15-pin pin socket 41 and a first 15-pin socket 42;

[0057] The first 15-pin socket 41 is disposed inside the torpedo assembly 1, and the first 15-pin socket 42 is disposed inside the first connecting sleeve 5.

[0058] The torpedo assembly 1 and the first connecting sleeve 5 are connected by a first 15-pin socket 41 and a first 15-pin socket 42.

[0059] The torpedo assembly 1 includes a first protective spring 11, a first conical connecting sleeve 12, a torpedo casing 13, and a first connecting wire 14.

[0060] The first protective spring 11, the first conical connecting sleeve 12, the first connecting wire 14, and the first 15-pin socket 41 are all sequentially arranged inside the torpedo casing 13. The first protective spring 11 is located at the top inner side of the torpedo casing 13. One end of the first conical connecting sleeve 12 abuts against the first protective spring 11. One end of the first connecting wire 14 is clamped inside the first conical connecting sleeve 12, and the other end is connected to the first 15-pin socket 41. The first 15-pin socket 41 is inserted into the first 15-pin socket 42 inside the torpedo casing 13.

[0061] The first connecting sleeve 5 includes a first connecting outer shell 51, a second connecting line 52, a second conical connecting sleeve 53, and a second protective spring 54.

[0062] The second connecting line 52, the second tapered connecting sleeve 53, and the second protective spring 54 are all disposed inside the first connecting housing 51;

[0063] The 15-pin socket 42 is disposed at the port of the first connecting housing 51 and faces the first 15-pin socket 41. One end of the second connecting wire 52 is connected to the first 15-pin socket 42, and the other end is clamped on the second conical connecting sleeve 53. The second conical connecting sleeve 53 abuts against one end of the second protective spring 54, and the other end of the second protective spring 54 abuts against the port of the first connecting housing 51. The port of the first connecting housing 51 is connected to one end of the electrode wire 3.

[0064] Specifically, according to Figure 4 As shown, the second conical connecting sleeve 53 includes a first conical tube 531, a second conical tube 532, a third conical tube 533, and an outer conical frame 534;

[0065] The outer cone frame 534 is disposed inside the first connecting housing 51, the third cone tube 533 is sleeved inside the outer cone frame 534, and an insulating sleeve 535 is provided between the third cone tube 533 and the outer cone frame 534.

[0066] The second tapered tube 532 is sleeved inside the third tapered tube 533, and a gap is provided between the outer wall of the second tapered tube 532 and the inner wall of the third tapered tube 533;

[0067] The first tapered tube 531 is sleeved inside the second tapered tube 532, and a gap is provided between the outer wall of the first tapered tube 531 and the inner wall of the second tapered tube 532;

[0068] The ends of the second connecting line 52 are respectively clamped in the gaps between the second tapered tube 532 and the third tapered tube 533 and between the first tapered tube 531 and the second tapered tube 532.

[0069] In this embodiment, the diameters of the outer conical frame, the third conical tube, the second conical tube, and the first conical tube are successively reduced, changing the appearance of the insulating sleeve. After the inner and outer steel wires of the cable are locked, the insulating sleeve and the outer conical frame are installed to provide support. However, the overall size is reduced, so that the outer diameter of the torpedo head under the corresponding electrode can be the same as that of the cable torpedo head. If it is used on the cable torpedo head and the insulating sleeve is not required, the outer diameter of the torpedo head can be made smaller to meet the needs of logging in small wellbores or small diameter casings.

[0070] Specifically, the second 15-pin connector assembly 7 includes a second 15-pin socket 71 and a second 15-pin jack socket 72;

[0071] The second 15-pin socket 71 is disposed inside the second connecting sleeve 6, and the second 15-pin socket 72 is disposed inside the bridle assembly 2;

[0072] The second connecting sleeve 6 and the horse bridle assembly 2 are connected by a second 15-pin socket 71 and a second 15-pin socket 72.

[0073] The second connecting sleeve 6 includes a third protective spring 61, a second connecting outer shell 62, a third conical connecting sleeve 63, and a third connecting line 64;

[0074] The third protective spring 61, the third conical connecting sleeve 63, the third connecting wire 64, and the second 15-pin socket 71 are all sequentially arranged inside the second connecting housing 62. The third protective spring 61 is located at the inner top of the second connecting housing 62. One end of the third conical connecting sleeve 63 abuts against the third protective spring 61. One end of the third connecting wire 64 is clamped inside the third conical connecting sleeve 63, and the other end is connected to the second 15-pin socket 71. The second 15-pin socket 71 is inserted into the second 15-pin socket 72 inside the second connecting housing 62.

[0075] The bridle assembly 2 includes an upper connector 21, a weak point tension bar 22, a bridle housing 23, a lower connector 24, and a 15-core pressure-bearing pin plate 25.

[0076] The upper connector 21, the weak point tension bar 22, the lower connector 24, and the 15-core pressure-bearing pin plate 25 are all located inside the horse bridle housing 23.

[0077] The second 15-pin socket 72 is located at the port of the bridle housing 23 and is oriented toward the second 15-pin socket 71.

[0078] In this embodiment, the bridle uses the original electrode bridle head portion. A new connector is manufactured between the tension rod and the pressure-bearing plug. The upper 7-pin socket is replaced with a 15-pin socket, allowing direct connection to a 15-pin cable torpedo head or a 15-pin electrode line torpedo head. The lower 15-magnetic-pillar pressure plate remains unchanged. The entire system is encased in a bladder, with an outer bridle shell. An oil injection hole is designed on the outside of the shell to facilitate the addition of silicone oil and maintain pressure balance within the shell.

[0079] according to Figure 3 As shown, in this embodiment, the first 15-pin connector assembly 4 and the second 15-pin connector assembly 7 are filled with insulating material, and their insertion holes each include 7 sets of coarse pin holes and 8 sets of fine pin holes.

[0080] The 15-pin pressure-bearing plug abandons the original method of installing 7 φ1.6mm pressure-bearing magnetic posts on a pressure-bearing plate. Because the original method required a socket wrench to install the magnetic posts, and the pressure-bearing plate cross-section needed space for the wrench to rotate, the number of magnetic posts that could be arranged was limited. The new method uses a plate with the same shape as the original pressure-bearing plate, with 7 φ1.6mm copper pins and 8 φ1.0mm copper pins arranged on it. The gaps are filled with PEEK material for insulation and pressure bearing. This saves space for the 8 φ1.0mm copper pins. The φ1.6mm copper pins in the plate are used for current transmission and large-volume data signal transmission; the φ1.0mm copper pins are used for electrode data signals and small-volume data signal transmission. The external dimensions of the pressure-bearing plate are exactly the same as the original magnetic post pressure-bearing plate. It can be installed in the same position as the original cable torpedo head, or in the same position as the torpedo head under the newly manufactured electrode line. It can also be installed with a double female copper plug as a 15-pin socket on the upper part of the torpedo head and universal bridle on the electrode line.

[0081] In this embodiment, the torpedo assembly 1 is a newly manufactured 5-piece set. The inner 3-piece set locks the inner and outer steel wires of the inner core cable of the electrode wire, and is covered with an insulation layer and an outer cone frame. The outer cone frame can provide support for the inner 3-piece set, so that the tensile force of the thinner and smaller 3-piece set is not reduced. The 7 cable cores of the inner cable of the electrode wire are connected to the 7 φ1.6mm copper needles of the 15-core bearing plate at the lower end through copper plugs. The electrode ring wire covering the electrode wire is connected to the 7 φ1.0mm copper needles of the 15-core bearing plate at the lower end through the groove of the outer cone frame. The outer diameter of the torpedo head under the entire electrode wire set is the same as that of the cable torpedo head. The torpedo shell has a grease injection hole, and silicone grease is injected to maintain the pressure balance inside the shell.

[0082] Example 2

[0083] See Figure 5 This embodiment also provides a separate electrode connection structure, including a torpedo assembly 1, a bridle assembly 2, and a first 15-pin connector assembly 4;

[0084] The torpedo assembly 1 is connected to the bridle assembly 2 via the first 15-pin connector assembly 4, wherein one end of the first 15-pin connector assembly 4 is disposed on the torpedo assembly 1 and the other end is disposed on the bridle assembly 2.

[0085] The structure and principle of the torpedo assembly 1, the bridle assembly 2 and the first 15-pin connector assembly 4 are the same as those of Embodiment 1. The first 15-pin connector assembly 4 realizes the transformation from the original 7-pin socket to a 15-pin socket, and the original 7-pin pressure-bearing pin socket of the cable torpedo head is transformed into a 15-pin pressure-bearing pin socket.

[0086] Example 3

[0087] This embodiment provides a method for using a split electrode connection structure, based on the split electrode connection structure described above; it includes the following process:

[0088] The torpedo assembly 1 is connected to the first connecting sleeve 5 of the electrode wire 3 via the first 15-pin connector assembly 4, and the bridle assembly 2 is connected to the second connecting sleeve 6 of the electrode wire 3 via the second 15-pin connector assembly 7, thus completing the sequential connection of the torpedo assembly 1, the bridle assembly 2, and the electrode wire 3. When performing acoustic, inductive, or radioactive logging tasks, a 7-core connector consisting of 7 through-wire cables is used in the first 15-pin connector assembly 4 and the second 15-pin connector assembly 7, and the bridle assembly 2 is the cable bridle. When performing lateral, spontaneous potential, or electrode resistivity logging tasks, a 15-core connector consisting of 7 through-wire cables, 7 internal electrode wires, and 1 ground wire is used in the first 15-pin connector assembly 4 and the second 15-pin connector assembly 7, and the bridle assembly 2 is the electrode bridle.

[0089] In summary, this invention provides a detachable electrode connection structure and method of use. The torpedo assembly, the bridle assembly, and the electrode wire are sequentially connected via a first 15-pin connector assembly and a second 15-pin connector assembly. This effectively improves the versatility of the bridle among 15-pin connector assemblies, satisfying both 7-pin and 15-pin connector requirements. A first connecting sleeve is provided at one end of the electrode wire, and a second connecting sleeve is provided at the other end. The first connecting sleeve connects to the first 15-pin connector assembly, and the second connecting sleeve connects to the second 15-pin connector assembly. No separate fabrication is required; the conversion between the electrode bridle and the cable bridle is achieved simply by connecting via the 15-pin connector assemblies, effectively improving logging efficiency.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A detachable electrode connection structure, characterized in that, It includes a torpedo assembly (1), a bridle assembly (2), an electrode wire (3), a first 15-pin connector assembly (4), and a second 15-pin connector assembly (7). One end of the electrode wire (3) is provided with a first connecting sleeve (5), and the other end is provided with a second connecting sleeve (6); The first connecting sleeve (5) is connected to the torpedo assembly (1) via a first 15-pin connecting plug assembly (4); wherein one end of the first 15-pin connecting plug assembly (4) is disposed inside the first connecting sleeve (5), and the other end is disposed inside the torpedo assembly (1); The second connecting sleeve (6) is connected to the bridle assembly (2) via a second 15-pin connecting plug assembly (7), wherein one end of the second 15-pin connecting plug assembly (7) is disposed inside the second connecting sleeve (6) and the other end is disposed inside the bridle assembly (2); The first connecting sleeve (5) includes a first connecting shell (51), a second connecting line (52), and a second conical connecting sleeve (53); The second conical connecting sleeve (53) includes a first conical tube (531), a second conical tube (532), a third conical tube (533), and an outer conical frame (534); The outer cone frame (534) is disposed inside the first connecting shell (51), the third cone tube (533) is sleeved inside the outer cone frame (534), and an insulating sleeve (535) is provided between the third cone tube (533) and the outer cone frame (534). The second tapered tube (532) is fitted inside the third tapered tube (533), and a gap is provided between the outer wall of the second tapered tube (532) and the inner wall of the third tapered tube (533); The first tapered tube (531) is sleeved inside the second tapered tube (532), and a gap is provided between the outer wall of the first tapered tube (531) and the inner wall of the second tapered tube (532); The ends of the second connecting line (52) are respectively clamped in the gaps between the second tapered tube (532) and the third tapered tube (533) and between the first tapered tube (531) and the second tapered tube (532).

2. The detachable electrode connection structure according to claim 1, characterized in that, The first 15-pin connector assembly (4) includes a first 15-pin socket (41) and a first 15-pin jack socket (42). The first 15-pin socket (41) is disposed inside the torpedo assembly (1), and the first 15-pin socket (42) is disposed inside the first connecting sleeve (5); The torpedo assembly (1) and the first connecting sleeve (5) are connected by a first 15-pin socket (41) and a first 15-pin socket (42).

3. The detachable electrode connection structure according to claim 2, characterized in that, The torpedo assembly (1) includes a first protective spring (11), a first conical connecting sleeve (12), a torpedo casing (13), and a first connecting wire (14). The first protective spring (11), the first conical connecting sleeve (12), the first connecting wire (14) and the first 15-pin socket (41) are all sequentially arranged inside the torpedo casing (13). The first protective spring (11) is located at the top of the inner side of the torpedo casing (13). One end of the first conical connecting sleeve (12) abuts against the first protective spring (11). One end of the first connecting wire (14) is clamped inside the first conical connecting sleeve (12) and the other end is connected to the first 15-pin socket (41). The first 15-pin socket (41) is inserted into the first 15-pin socket (42) inside the torpedo casing (13).

4. The detachable electrode connection structure according to claim 2, characterized in that, The first connecting sleeve (5) also includes a second protective spring (54); The second connecting line (52), the second tapered connecting sleeve (53), and the second protective spring (54) are all disposed inside the first connecting housing (51); The first 15-pin socket (42) is located at the port of the first connecting housing (51) and faces the first 15-pin socket (41). One end of the second connecting wire (52) is connected to the first 15-pin socket (42), and the other end is clamped on the second conical connecting sleeve (53). The second conical connecting sleeve (53) abuts against one end of the second protective spring (54), and the other end of the second protective spring (54) abuts against the port of the first connecting housing (51). The port of the first connecting housing (51) is connected to one end of the electrode wire (3).

5. The detachable electrode connection structure according to claim 1, characterized in that, The second 15-pin connector assembly (7) includes a second 15-pin socket (71) and a second 15-pin jack socket (72); The second 15-pin socket (71) is disposed inside the second connecting sleeve (6), and the second 15-pin socket (72) is disposed inside the bridle assembly (2); The second connecting sleeve (6) and the horse bridle assembly (2) are connected by a second 15-pin socket (71) and a second 15-pin socket (72).

6. The detachable electrode connection structure according to claim 5, characterized in that, The second connecting sleeve (6) includes a third protective spring (61), a second connecting shell (62), a third conical connecting sleeve (63), and a third connecting line (64). The third protective spring (61), the third conical connecting sleeve (63), the third connecting wire (64), and the second (15) core pin seat (71) are all sequentially arranged inside the second connecting housing (62). The third protective spring (61) is located at the inner top of the second connecting housing (62). One end of the third conical connecting sleeve (63) abuts against the third protective spring (61). One end of the third connecting wire (64) is clamped inside the third conical connecting sleeve (63), and the other end is connected to the second 15 core pin seat (71). The second 15 core pin seat (71) is inserted into the second 15 core socket seat (72) inside the second connecting housing (62).

7. The detachable electrode connection structure according to claim 5, characterized in that, The bridle assembly (2) includes an upper connector (21), a weak point tension bar (22), a bridle shell (23), a lower connector (24), and a (15) core pressure-bearing pin plate (25). The upper connector (21), the weak point tension bar (22), the lower connector (24), and the (15) core pressure-bearing pin plate (25) are all located inside the horse bridle shell (23); The second 15-pin socket (72) is located at the port of the bridle housing (23) and is oriented toward the second 15-pin socket (71).

8. The detachable electrode connection structure according to claim 1, characterized in that, The first 15-pin connector assembly (4) and the second 15-pin connector assembly (7) are filled with insulating material, and their insertion holes include (7) sets of coarse pin holes and (8) sets of fine pin holes.

9. A method of using a detachable electrode connection structure, characterized in that, A split electrode connection structure based on any one of claims 1-8; comprising the following process: The torpedo assembly (1) is connected to the first connecting sleeve (5) of the electrode wire (3) through the first 15-core connector assembly (4), and the bridle assembly (2) is connected to the second connecting sleeve (6) of the electrode wire (3) through the second 15-core connector assembly (7), thus completing the sequential connection of the torpedo assembly (1), the bridle assembly (2), and the electrode wire (3). When performing acoustic, induction, and radioactive logging tasks, a 7-core connector consisting of 7 through-wire cables is used in the first 15-core connector assembly (4) and the second 15-core connector assembly (7), and the bridle assembly (2) is the cable bridle. When performing lateral, spontaneous potential, and electrode resistivity logging tasks, a 15-core connector consisting of 7 through-wire cables, 7 internal electrode wires, and 1 ground wire is used in the first 15-core connector assembly (4) and the second 15-core connector assembly (7), and the bridle assembly (2) is the electrode bridle.

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