Steel wire armor cable assembly and flexible long cable drilling tool

Abstract

The present invention belongs to the technical field of connectors, and particularly relates to a steel wire armor cable assembly and a flexible long cable drilling tool. The steel wire armor cable assembly includes a single-core steel cable, and a bending section is provided in the middle of the single-core steel cable; the single-core steel cable has an A end and a B end, and the A end is provided with a male connector, and the B end is provided with a female connector; the male connector and the female connector are respectively fixed to the two ends of the outer shell of the drill tool, and one end of the outer shell of the drill tool rotates to drive the single-core steel cable to extend or compress in the outer shell of the drill tool. The steel wire armor cable assembly in the present technical solution adds a bending section in the middle of the single-core steel cable, so that the single-core steel cable itself has elasticity and satisfies the function of free stretching or contraction. When one end of the outer shell of the drill tool rotates, the single-core steel cable is driven to extend or compress in the outer shell of the drill tool, thereby solving the problem that the signal cable in the drill tool can be freely stretched and contracted for length compensation when the longer drill tool is bent.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and in particular relates to a steel wire armor cable assembly and a flexible long cable type drilling tool. Background Art

[0002] With the rapid development of oil exploration, the drilling depth is getting deeper and deeper, so the drilling tools are getting longer and longer, and the requirements for erosion resistance and high temperature and pressure resistance are getting higher and higher. The real-time transmission and analysis of downhole resource exploration data are used as the basis for real-time adjustment of the drilling tool operation direction. This requires that the signal cable in the drilling tool can be freely stretched and contracted to compensate for the length when the longer drilling tool is bent.

[0003] However, it is difficult for the drilling tools in the prior art to meet the requirement that the signal cable in the drilling tool can be freely stretched and contracted for length compensation when bending occurs. The main reasons are as follows:

[0004] 1. The direct-connected drilling tools in the prior art are not flexible, and the internal steel wire signal cable does not have the function of freely stretching or contracting when the drilling tool is bent;

[0005] 2. Due to the high temperature and pressure requirements of the drilling tools, the existing technology requires that the signal cable be vulcanized as a whole to ensure that the drilling tools have high high temperature and pressure resistance performance. The traditional steel cable overall vulcanization process requires that the steel cable length be less than 1 meter to have high pressure resistance capacity; therefore, based on the limitation of the steel cable length of less than 1 meter in the vulcanization process, it is impossible to set sufficient margin to meet the function of free stretching and contraction.

[0006] In view of the above problems, a steel wire armor cable assembly and a flexible long cable drilling tool are designed. Summary of the invention

[0007] The present invention aims at solving the problems in the prior art and proposes the following technical solutions:

[0008] On the one hand, a steel wire armor cable assembly is provided, which is used in conjunction with an outer shell of a drilling tool, wherein the steel wire armor cable assembly comprises a single-core steel cable, wherein a bending section is provided at the middle of the single-core steel cable; the single-core steel cable has an A end and a B end, wherein the A end is provided with a male connector, and the B end is provided with a female connector;

[0009] The male connector and the female connector are respectively fixed to two ends of the outer shell of the drilling tool, and one end of the outer shell of the drilling tool rotates to drive the single-core steel cable to extend or compress in the outer shell of the drilling tool.

[0010] As a preferred embodiment of the above technical solution, the male connector includes a male connector sleeve axially passing through the middle part, the single-core steel cable passes through the outlet end of the male connector sleeve and is sealed and matched therewith, the A end of the single-core steel cable is located inside the male connector sleeve and is equipped with a single-core rubber connector 1, the single-core rubber connector 1 extends to the outside of the male connector sleeve and is sealed and plugged with a sealed single-core connector 1, the sealed single-core connector is provided with and cooperates with the male connector sleeve to clamp a stopper sleeve, the outer circle thread of the stopper sleeve is matched with a male pressure seat, one end of the male pressure seat axially extends to seal and cover the middle part of the sealed single-core connector 1, the other end of the male pressure seat axially extends to seal and cover the end of the male connector sleeve, and is threadedly connected to the male connector sleeve through a top screw 1, the outer circle thread of the male connector sleeve is matched with a male screw sleeve, the male screw sleeve axially extends to seal and cover the male connector sleeve, seal and cover the fixed male pressure seat, and cover the sealed single-core connector 1 in sequence, and the interior of the male connector forms a sealed state;

[0011] The female connector includes a female connector sleeve axially penetrated in the middle, the single-core steel cable passes through the outlet end of the female connector sleeve and is sealed and matched therewith, the B end of the single-core steel cable is located inside the female connector sleeve and is equipped with a single-core rubber connector 2, the single-core rubber connector 2 is sealed and plugged with a sealed single-core connector 2, the sealed single-core connector 2 is extended to the outside of the female connector sleeve and is sealed and plugged with a single-core rubber connector 3, the sealed single-core connector 2 is sealed and threadedly matched with a female pressure-bearing seat, one end of the female pressure-bearing seat axially extends to seal and cover the end of the single-core rubber connector 3 and abuts and fixes it, the other end of the female pressure-bearing seat axially extends to seal and cover the end of the female connector sleeve, and is threadedly connected to the female connector sleeve through a top screw 2, the outer ring thread of the female connector sleeve is matched with a female screw sleeve, the female screw sleeve axially extends to seal and cover the female connector sleeve, seal and cover the fixed female pressure-bearing seat, and cover the single-core rubber connector 3 in sequence;

[0012] When multiple sections of the steel wire armor cable assembly are used in series, adjacent male connectors and female connectors are plugged in and matched, wherein sealed single-core connector one and single-core rubber connector three are sealed and plugged in and matched, the male thread sleeve is inserted into the interior of the female thread sleeve and sealed therewith, and the interior of the male connector, the interior of the female connector, and the plug-in space between the male connector and the female connector are all sealed.

[0013] As a preferred embodiment of the above technical solution, the male pressure seat is provided with a sealing ring three, and the sealing ring three is squeezed with the inner wall of the male screw sleeve to form a radial seal, the male connecting sleeve is provided with a sealing ring four, and the sealing ring four is squeezed with the inner wall of the male pressure seat to form a radial seal, and the male connecting sleeve is provided with a sealing ring five, and the sealing ring five is squeezed with the inner wall of the male screw sleeve to form a radial seal;

[0014] The female connecting sleeve is provided with a sealing ring eight, and the sealing ring eight is squeezed with the inner wall of the female screw sleeve to form a radial seal. The female pressure-bearing seat is provided with a sealing ring nine, and the sealing ring nine is squeezed with the inner wall of the female screw sleeve to form a radial seal.

[0015] As a preferred embodiment of the above technical solution, the sealed single-core connector is provided with a sealing ring 2, and the sealing ring 2 is squeezed with the inner wall of the male pressure seat to form a radial seal, and the sealed single-core connector is provided with a convex bulge 3, and the convex bulge 3 is squeezed with the convex bulge groove provided on the rubber sleeve of the single-core rubber connector to form a seal;

[0016] The sealed single-core connector 2 is provided with a sealing ring 10, and the sealing ring 10 is squeezed with the inner wall of the female pressure-bearing seat to form a radial seal. The sealed single-core connector 2 is provided with a convex bulge 3 and a convex bulge 4, and the convex bulge 3 is squeezed with the convex bulge groove provided on the rubber sleeve of the single-core rubber connector 2 to form a seal, and the convex bulge 4 is squeezed with the first convex bulge groove provided on the rubber sleeve of the single-core rubber connector 3 to form a seal.

[0017] As a preferred embodiment of the above technical solution, a convex bump is provided on the sealed single-core connector, and a sealing ring is provided on the male screw sleeve;

[0018] When multiple sections of the steel wire armor cable assembly are used in series, adjacent male connectors and female connectors are plugged together, wherein the convex bulge 1 and the second convex bulge groove provided on the rubber sleeve of the single-core rubber connector 3 are squeezed to form a seal, and the sealing ring 1 is squeezed with the inner wall of the female screw sleeve to form a radial seal.

[0019] As a preferred embodiment of the above technical solution, a fixing piece is provided between the outlet end of the male connecting sleeve and the outlet end of the female connecting sleeve and the single-core steel cable;

[0020] The fixing part comprises a steel cable fixing cylinder sleeved on the single-core steel cable, a rubber sleeve pressing cylinder sleeved on the single-core steel cable and threadedly matched with the steel cable fixing cylinder, a cone frame for fixing the single-core steel cable is arranged inside the steel cable fixing cylinder, a cone surface 1 is arranged on the outside of the steel cable fixing cylinder, a cone surface A and a step surface are arranged inside the male connecting sleeve and the female connecting sleeve, and the rubber sleeve pressing cylinder is threadedly matched with the steel cable fixing cylinder until the cone surface 1 contacts the cone surface A and the end of the rubber sleeve pressing cylinder contacts the step surface;

[0021] The fixing part also includes a steel cable screw sleeve which is thread-sealed with the male connecting sleeve or the female connecting sleeve, and the single-core steel cable passes through the steel cable screw sleeve and is sealed with the male connecting sleeve.

[0022] As a preferred embodiment of the above technical solution, the male connecting sleeve and the female connecting sleeve are provided with a sealing ring 7, and the sealing ring 7 is squeezed with the inner wall of the cable screw sleeve to form a radial seal;

[0023] The single-core steel cable is provided with a rubber cable sheath and a metal gasket at the position covered by the corresponding steel cable screw sleeve, the inner side of the end of the rubber sheath pressure cylinder is provided with a second cone surface, and the outer side of the end of the rubber cable sheath is provided with a third cone surface;

[0024] The wire cable screw sleeve is threadedly matched with the male connecting sleeve or the female connecting sleeve until the end of the wire cable screw sleeve is squeezed with the metal gasket, the rubber wire sleeve and the rubber sleeve pressing cylinder in sequence, wherein the end of the rubber wire sleeve is inserted into the interior of the rubber sleeve pressing cylinder, and the second cone surface is matched with the third cone surface.

[0025] As a preferred embodiment of the above technical solution, a cavity 1 is formed between the gap between the male connecting sleeve and the single-core steel cable, a countersunk hole 1 is provided at the position of the male connecting sleeve corresponding to the single-core steel cable, the countersunk hole 1 is threadedly matched with an oil-blocking screw 1, and the oil-blocking screw 1 is provided with a sealing ring 6 to achieve extrusion sealing with the male connecting sleeve, and insulating hydraulic oil is vacuum-filled into the cavity 1 through the countersunk hole 1, so that the inside of the male connector forms an oil seal pressure balance with the external environment;

[0026] The gap between the female connecting sleeve and the single-core steel cable forms cavity 2, the outer ring side wall of the female pressure-bearing seat is provided with oil groove 2 connected with cavity 2, the female screw sleeve is provided with countersunk hole 2 at the position corresponding to the oil groove 2, the countersunk hole 2 thread is matched with oil blocking screw 2, the oil blocking screw 2 is provided with sealing ring 11, and realizes extrusion sealing with the female screw sleeve, and insulating hydraulic oil is vacuum filled into cavity 2 through countersunk hole 2, and oil seal pressure balance is formed between the inside of the female connector and the external environment.

[0027] On the other hand, a flexible long-cable drilling tool is provided, comprising the steel wire armor cable assembly as described in any one of the above items, and a drilling tool outer shell used in conjunction with the steel wire armor cable assembly;

[0028] The outer shell of the drilling tool comprises an upper connecting part of the drill rod, a drill rod adapter and a lower connecting part of the drill rod, wherein the drill rod adapter comprises a ball head connecting rod axially penetrating the middle part and a ball seat connecting rod sealingly matched with the spherical surface of the ball head connecting rod;

[0029] The drill rod upper connection part includes a drill rod upper sleeve rigidly connected to the ball seat connecting rod, a baffle plate arranged inside the drill rod upper sleeve, and a pressure ring threadedly matched with the inner wall of the drill rod upper sleeve, wherein the pressure ring is matched with the step surface of the drill rod upper sleeve to clamp and fix the baffle plate;

[0030] The lower connecting part of the drill rod comprises a lower sleeve of the drill rod rigidly connected to the ball head connecting rod, a baffle plate 2 arranged inside the lower sleeve of the drill rod, and a pressure cylinder rigidly connected to the butt end of the lower sleeve of the drill rod, and the pressure cylinder cooperates with the step surface of the lower sleeve of the drill rod to clamp the baffle plate 2; the male connector is sleeved with a fixed baffle plate 1 and fixed inside the upper connecting part of the drill rod, and the female connector is sleeved with a baffle plate 2 and fixed inside the lower connecting part of the drill rod;

[0031] When the flexible long-cable drilling tool is used in multiple sections in series, the upper connection part of the drill pipe also includes a pressure cylinder pad, and the adjacent upper connection parts of the drill pipe and the lower connection parts of the drill pipe are assembled, and the pressure cylinder cooperates with the pressure ring to squeeze and fix the pressure cylinder pad.

[0032] As a preferred embodiment of the above technical solution, the baffle plate 1 is slidably matched with the sleeve on the drill pipe in the axial direction, the male connecting sleeve passes through the baffle plate 1 and is slidably matched with the sleeve in the axial direction, the male connecting sleeve is threadedly matched with the male screw sleeve, and the step on the male connecting sleeve and the step on the male screw sleeve clamp and fix the baffle plate 1;

[0033] The second baffle plate is axially slidably matched with the lower sleeve of the drill pipe, the female connecting sleeve passes through the second baffle plate and is axially slidably matched with it, the female connecting sleeve thread is matched with the female screw sleeve, and the step on the female connecting sleeve and the step on the female screw sleeve clamp and fix the second baffle plate.

[0034] The beneficial effects of the present invention are:

[0035] 1. The steel wire armor cable assembly in the technical solution adds a bending section in the middle of the single-core steel cable, so that the single-core steel cable itself has elasticity and satisfies the function of free stretching or contraction. When one end of the outer shell of the drill tool rotates, the single-core steel cable is driven to extend or compress inside the outer shell of the drill tool, thereby solving the problem that the signal cable (single-core steel cable) inside the drill tool can be freely stretched and contracted for length compensation when the longer drill tool is bent.

[0036] 2. The steel wire armor cable assembly in this technical solution achieves the effect of high temperature pressure bearing performance through the overall sealing of the steel wire armor cable assembly, which meets the requirement of high high temperature pressure bearing performance when the steel wire armor cable assembly is used in drilling tools; while obtaining high high temperature pressure bearing performance, the original method of overall vulcanization of the steel cable is abandoned, so that the length of the steel cable is not limited, and there is a margin to meet the needs of free stretching and contraction;

[0037] The length of the steel cable is not limited, which solves the problem in the prior art that the steel cable can only be made short due to the length limitation. During assembly, the short drilling tool is assembled section by section through the thread and the sealing ring, which is difficult to assemble and a drilling tool with too many connection points is prone to connection failure. The length of the steel cable is not limited, which solves the problem that the drilling tool has high rigidity, low flexibility and limited turning caused by multi-node assembly.

[0038] The steel cable abandons the overall vulcanization method and has strong resistance to mud erosion. The steel cable can directly contact the mud, which solves the problems of poor resistance to mud erosion, short life and regular replacement of the vulcanized position in the traditional vulcanization method. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Shown is a schematic structural diagram of the steel wire armor cable assembly in Example 1;

[0040] Figure 2 The figure shows the assembly diagram of the A end of the single-core steel cable and the male connector in Example 1;

[0041] Figure 3 The figure shows the assembly diagram of the B end of the single-core steel cable and the female connector in Example 1;

[0042] Figure 4 What is shown is a schematic diagram of the structure of the male screw sleeve in Example 1;

[0043] Figure 5 The structure diagram of the sealed single-core connector 1 in Example 1 is shown;

[0044] Figure 6 The structure diagram of the male pressure seat in Example 1 is shown;

[0045] Figure 7 The figure shows a schematic diagram of the structure of the male connecting sleeve in Embodiment 1;

[0046] Figure 8 It shows the structure schematic diagram of the steel cable fixing drum in Example 1;

[0047] Fig. 9 The structure diagram of the cable screw sleeve in Example 1 is shown;

[0048] Fig.10 The structure diagram of the rubber sleeve pressing cylinder in Example 1 is shown;

[0049] Fig.11 The structure diagram of the rubber cable sheath in Embodiment 1 is shown;

[0050] Fig.12 The figure shows a schematic diagram of the structure of the female connecting sleeve in Embodiment 1;

[0051] Fig.13 The structure diagram of the sealed single-core connector 2 in the embodiment 1 is shown;

[0052] Fig.14 Shown is a schematic structural diagram of the female pressure bearing seat in Example 1;

[0053] Fig.15 The structure diagram of the flexible long-cable drilling tool in Example 2 is shown;

[0054] Fig.16 It shows a schematic diagram of the structure of the flexible long-cable drilling tool in Example 2 when multiple sections are used in series;

[0055] Fig.17 The structure diagram of the lower sleeve of the drill pipe in Example 2 is shown;

[0056] Fig.18 The structure diagram of the baffle 2 in the embodiment 2 is shown;

[0057] Fig.19 What is shown is a schematic structural diagram of the upper sleeve of the drill pipe in Example 2. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Example 1

[0059] like Figure 1 As shown, the steel wire armor cable assembly is used in conjunction with the outer shell of the drilling tool. The steel wire armor cable assembly includes a single-core steel cable 13. A bending section is provided at the middle position of the single-core steel cable 13. The setting of the bending section enables the single-core steel cable 13 to have a certain elasticity in the length direction. More specifically, in this embodiment, the bending section can be made into a wavy shape by using a high-temperature molding mold; the single-core steel cable 13 has an A end and a B end, the A end is provided with a male connector, and the B end is provided with a female connector;

[0060] The male connector and the female connector are respectively fixed to the two ends of the outer shell of the drilling tool. The rotation of one end of the outer shell of the drilling tool drives the single-core steel cable 13 to extend or compress in the outer shell of the drilling tool.

[0061] The steel wire armor cable assembly in the present technical solution adds a bending section at the middle position of the single-core steel cable 13, so that the single-core steel cable 13 itself has elasticity and satisfies the function of free stretching or contraction. When one end of the outer shell of the drill tool rotates, the single-core steel cable 13 is driven to extend or compress inside the outer shell of the drill tool, thereby solving the problem that the signal cable (single-core steel cable 13) inside the drill tool can be freely stretched and contracted for length compensation when the longer drill tool is bent.

[0062] like Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7As shown, the male connector includes a male connecting sleeve 11 axially penetrated in the middle, a single-core steel cable 13 passes through the outlet end of the male connecting sleeve 11 and is sealed and matched therewith, the A end of the single-core steel cable 13 is located inside the male connecting sleeve 11 and is equipped with a single-core rubber connector 12, the single-core rubber connector 12 extends to the outside of the male connecting sleeve 11 and is sealed and plugged with a sealed single-core connector 02, the sealed single-core connector 02 is sleeved and matched with the male connecting sleeve 11 to clamp a stopper sleeve 06, the outer circle thread of the stopper sleeve 06 is matched with the male pressure seat 07, the end of the male pressure seat 07 is provided with a thread 71, one end of the male pressure seat 07 axially extends and seals and covers the middle part of the sealed single-core connector 02, The other end of the male pressure seat 07 extends axially to seal and cover the end of the male connecting sleeve 11, and is threadedly connected to the male connecting sleeve 11 through a top screw 09. More specifically, a thread three 74 is provided on the male pressure seat 07, and a countersunk groove 111 is provided on the male connecting sleeve 11. The top screw 09 is assembled with the thread three 74 and the countersunk groove 111. The outer circle thread of the male connecting sleeve 11 is matched with the male screw sleeve 01. The male screw sleeve 01 is provided with a thread 013, and the male connecting sleeve 11 is provided with a thread four 113. The thread one 013 is adapted to the thread four 113. The male screw sleeve 01 extends axially to seal and cover the male connecting sleeve 11, seal and cover the fixed male pressure seat 07, and cover the sealed single-core connector 02 in sequence.

[0063] like Figure 1 , Figure 3 , Fig.12 , Fig.13 , Fig.14As shown, the female connector includes a female connector sleeve 22 axially penetrated in the middle, the single-core steel cable 13 passes through the outlet end of the female connector sleeve 22 and is sealed and matched therewith, the B end of the single-core steel cable 13 is located inside the female connector sleeve 22 and is equipped with a single-core rubber connector 28, the single-core rubber connector 28 is sealed and plugged with a sealed single-core connector 25, the sealed single-core connector 25 extends to the outside of the female connector sleeve 22 and is sealed and plugged with a single-core rubber connector 31, the sealed single-core connector 25 is sealed and threadedly matched with a female pressure-bearing seat 26, the sealed single-core connector 25 is provided with a thread 17 252, the female pressure-bearing seat 26 is provided with a thread 11 264, the thread 17 252 is adapted to the thread 11 264 One end of the female pressure-bearing seat 26 extends axially to seal and cover the end of the single-core rubber connector 31 and abuts and fixes it. The other end of the female pressure-bearing seat 26 extends axially to seal and cover the end of the female connecting sleeve 22, and is threadedly connected to the female connecting sleeve 22 through the top screw 29. A thread 12 265 is provided on the female pressure-bearing seat 26, and a sink groove 221 is provided on the female connecting sleeve 22. The top screw 29 is threadedly matched with the thread 12 265 and the sink groove 221. The outer ring of the female connecting sleeve 22 is provided with a thread 9 223 threadedly matched with the female screw sleeve 23. The female screw sleeve 23 extends axially to seal and cover the female connecting sleeve 22, seal and cover the fixed female pressure-bearing seat 26, and cover the single-core rubber connector 31 in sequence, and the interior of the female connector forms a sealed state;

[0064] like Fig.16 As shown, when multiple sections of the steel wire armor cable assembly are used in series, the adjacent male connectors and female connectors are plugged in and matched, wherein the sealed single-core connector 02 is sealed and plugged in with the single-core rubber connector 3 31, the male screw sleeve 01 is inserted into the interior of the female screw sleeve 23 and sealed therewith, and the plug-in space between the male connector and the female connector forms a sealed state.

[0065] The steel wire armor cable assembly in the technical solution is provided with a male connector at the A end of the single-core steel cable 13. The A end of the single-core steel cable 13 is plugged and unplugged with the sealed single-core connector 02 through the single-core rubber connector 12. At the outlet end, the single-core steel cable 13 passes through the male connection sleeve 11 and is sealed with it. At the docking end, one end of the male pressure seat 07 is axially extended to seal and cover the middle part of the fixed sealed single-core connector 02, and the other end is axially extended to seal and cover the end of the male connection sleeve 11. The male screw sleeve 01 is axially extended to seal and cover the male connection sleeve 11, the fixed male pressure seat 07, and the sealed single-core connector 02 in sequence, so that the interior of the male connector forms a sealed state.

[0066] The B end of the single-core steel cable 13 is provided with a female connector. The B end of the single-core steel cable 13 is plugged and unplugged in sequence through the single-core rubber connector 28 to match the sealed single-core connector 25 and the single-core rubber connector 31. At the outlet end, the single-core steel cable 13 passes through the female connection sleeve 22 and seals with it. At the docking end, one end of the female pressure-bearing seat 26 is axially extended to seal and cover the end of the single-core rubber connector 31, and the other end is axially extended to seal and cover the end of the female connection sleeve 22. The female screw sleeve 23 is axially extended to seal and cover the female connection sleeve 22, seal and cover the fixed female pressure-bearing seat 26, and cover the single-core rubber connector 31 in sequence, so that the interior of the female connector forms a sealed state;

[0067] When multiple sections of the steel wire armor cable assembly are used in series, the adjacent male connectors and female connectors are plugged in and matched, the sealed single-core connector 02 is sealed and plugged in with the single-core rubber connector 3 31, the male screw sleeve 01 is inserted into the interior of the female screw sleeve 23 and sealed therewith, the plug-in space between the male connector and the female connector forms a sealed state, and the steel wire armor cable assembly achieves an overall sealing effect.

[0068] Among them, in the male connector, a sealed single-core connector 02 is used to be set and cooperate with the male connecting sleeve 11 to clamp the stop sleeve 06, the outer circle thread of the stop sleeve 06 cooperates with the male pressure seat 07, one end of the male pressure seat 07 axially extends and seals to cover the middle part of the sealed single-core connector 02, and the other end is threadedly connected to the male connecting sleeve 11 through a top screw 09, so that the A end of the single-core steel cable 13 is fixed in the male connector; in the female connector, the sealed single-core connector 25 sealing thread is cooperated with the female pressure seat 26, one end of the female pressure seat 26 axially extends and seals to cover the end of the single-core rubber connector 31 and abuts and fixes it, and the other end is threadedly connected to the female connecting sleeve 22 through a top screw 29, so that the B end of the single-core steel cable 13 is fixed in the female connector, and the stable assembly of the steel wire armor cable assembly is achieved.

[0069] The steel wire armor cable assembly in this technical solution achieves the effect of high temperature pressure bearing performance through the overall sealing of the steel wire armor cable assembly, 1. It meets the requirements of high high temperature pressure bearing performance when the steel wire armor cable assembly is used in drilling tools;

[0070] 2. While achieving higher high temperature pressure bearing performance, the original method of overall vulcanization of the steel cable was abandoned, so that the length of the steel cable is not limited and there is a margin to meet the needs of free stretching and contraction;

[0071] 3. The length of the steel cable is not limited, which solves the problem in the prior art that the steel cable can only be made short due to the length limitation. During assembly, the short drill tool is assembled section by section through the thread and the sealing ring, which is difficult to assemble and has too many connection points on a drill tool, which is prone to connection failure;

[0072] 4. The length of the steel cable is not limited, which solves the problem of high rigidity, low flexibility and limited turning of drilling tools caused by multi-node assembly;

[0073] 5. The steel cable abandons the overall vulcanization method and has strong resistance to mud erosion. The steel cable can directly contact the mud, solving the problem of poor resistance to mud erosion, short life and regular replacement of the vulcanized position in the traditional vulcanization method.

[0074] Furthermore, in order to ensure the overall sealing effect of the steel wire armor cable assembly, the connector housing part at the butt end of the male connector, such as Figure 2 , Figure 6 , Figure 7 As shown, a sealing ring 3 05 is provided on the male pressure seat 07, more specifically, two sealing rings 3 05 are provided, and an annular groove 4 72 and an annular groove 5 73 for assembling two sealing rings 3 05 are provided on the male pressure seat 07. The sealing ring 3 05 is squeezed with the inner wall of the male screw sleeve 01 to form a radial seal, thereby ensuring the sealing performance between the male pressure seat 07 and the male screw sleeve 01; a sealing ring 4 08 is provided on the male connecting sleeve 11, more specifically, an inner wall of the male pressure seat 07 is provided with an assembly The annular groove six 75 of the sealing ring four 08 and the inner wall of the male pressure seat 07 are squeezed to form a radial seal, thereby ensuring the sealing performance between the male connecting sleeve 11 and the male pressure seat 07; the male connecting sleeve 11 is provided with a sealing ring five 10, and more specifically, the male connecting sleeve 11 is provided with an annular groove seven 112 for assembling the sealing ring five 10, and the sealing ring five 10 and the inner wall of the male threaded sleeve 01 are squeezed to form a radial seal, thereby ensuring the sealing performance between the male connecting sleeve 11 and the male threaded sleeve 01.

[0075] The connector housing portion at the mating end of the female connector, such as Figure 3 , Fig.12 , Fig.14 As shown, a sealing ring eight 24 is provided on the female connecting sleeve 22, and more specifically, an annular groove nine 222 for assembling the sealing ring eight 24 is opened on the female connecting sleeve 22, and the sealing ring eight 24 and the inner wall of the female screw sleeve 23 are squeezed to form a radial seal, thereby ensuring the sealing performance between the female connecting sleeve 22 and the female screw sleeve 23; a sealing ring nine 27 is provided on the female pressure-bearing seat 26, and more specifically, two sealing rings nine 27 are provided, and a sliding groove eleven 261 and an annular groove twelve 262 for assembling two sealing rings nine 27 are opened on the female pressure-bearing seat 26, and the sealing ring nine 27 and the inner wall of the female screw sleeve 23 are squeezed to form a radial seal, thereby ensuring the sealing performance between the female pressure-bearing seat 26 and the female screw sleeve 23.

[0076] For the connector part of the male connector, such as Figure 2 , Figure 5As shown, the sealed single-core connector 02 is provided with a sealing ring 204. More specifically, the sealed single-core connector 02 is provided with a ring groove 3022 for assembling the sealing ring 204. The sealing ring 204 and the inner wall of the male pressure seat 07 are squeezed to form a radial seal, thereby ensuring the sealing performance between the sealed single-core connector 02 and the male pressure seat 07. The sealed single-core connector 02 is provided with a convex bulge 3023. The convex bulge 3023 and the convex bulge groove provided on the rubber sleeve of the single-core rubber connector 12 are squeezed to form a seal, thereby ensuring the sealing performance between the sealed single-core connector 02 and the single-core rubber connector 12.

[0077] For the connector part of the female connector, such as Figure 3 , Fig.13 As shown, a sealing ring ten 253 is provided on the sealed single-core connector two 25, and the sealing ring ten 253 is squeezed with the inner wall of the female pressure-bearing seat 26 to form a radial seal, thereby ensuring the sealing performance between the sealed single-core connector two 25 and the female pressure-bearing seat 26; a convex bulge three 251 and a convex bulge four 254 are provided on the sealed single-core connector two 25, and the convex bulge three 251 and the convex bulge groove provided on the rubber sleeve of the single-core rubber connector two 28 are squeezed to form a seal, thereby ensuring the sealing performance between the sealed single-core connector two 25 and the single-core rubber connector two 28; the convex bulge four 254 and the first convex bulge groove provided on the rubber sleeve of the single-core rubber connector three 31 are squeezed to form a seal, thereby ensuring the sealing performance between the sealed single-core connector two 25 and the single-core rubber connector three 31.

[0078] When the male connector and the female connector are plugged in, the connector part of the butt connector, such as Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig.16 As shown, a convex bump 021 is provided on the sealed single-core connector 02, and a sealing ring 03 is provided on the male screw sleeve 01. More specifically, two sealing rings 03 are provided, and a ring groove 011 and a ring groove 012 for respectively assembling the two sealing rings 03 are provided on the male screw sleeve 01;

[0079] When multiple sections of the steel wire armor cable assembly are used in series, the adjacent male connectors and female connectors are plugged together, wherein the convex bulge 021 and the second convex bulge groove provided on the rubber sleeve in the single-core rubber connector 31 are squeezed to form a seal, thereby ensuring the sealing performance between the sealed single-core connector 02 and the single-core rubber connector 31, and the sealing ring 03 is squeezed with the inner wall of the female screw sleeve 23 to form a radial seal, thereby ensuring the sealing performance between the male screw sleeve 01 and the female screw sleeve 23, thereby realizing the pressure-bearing seal after the male connector and the female connector are connected.

[0080] like Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.12 As shown, the outlet ends of the male connecting sleeve 11 and the outlet ends of the female connecting sleeve 22 are both provided with fixings in cooperation with the single-core steel cable 13; the setting of the fixings performs secondary fixation on the single-core steel cable 13, ensures the fixation of the relative position between the single-core steel cable 13 and the male connector and the female connector, and improves the reliability of the steel wire armor cable assembly during use.

[0081] The fixing part includes a steel cable fixing barrel 16 sleeved on the single-core steel cable 13, a rubber sleeve pressure barrel 19 sleeved on the single-core steel cable 13 and threadedly matched with the steel cable fixing barrel 16, and a cone frame 161 for fixing the single-core steel cable 13 is arranged inside the steel cable fixing barrel 16. When the steel cable fixing barrel 16 is installed, the steel cable fixing barrel 16 uses the internal cone frame 161 to open the steel cable and knock the steel wire together with the cone frame 161 into the steel cable fixing barrel 16 to fix the position between the steel cable fixing barrel 16 and the single-core steel cable 13. The outer side of the steel cable fixing barrel 16 is provided with Conical surface 162, the male connecting sleeve 11, the female connecting sleeve 22 has a conical surface A and a step surface inside, the rubber sleeve pressing sleeve 19 is threadedly matched with the steel cable fixing sleeve 16 until the conical surface 162 contacts the conical surface A, and the end of the rubber sleeve pressing sleeve 19 contacts the step surface, so as to achieve the fixation of the relative positions of the steel cable fixing sleeve 16 and the male connecting sleeve 11, the female connecting sleeve 22. More specifically, the inner wall of the rubber sleeve pressing sleeve 19 is provided with a thread 8 192, and the outer wall of the steel cable fixing sleeve 16 is provided with a thread 6 163, and the thread 8 192 is adapted to the thread 6 163;

[0082] The fixing part also includes a steel cable screw sleeve 18 which is threadedly sealed with the male connecting sleeve 11 or the female connecting sleeve 22. The single-core steel cable 13 passes through the steel cable screw sleeve 18 and is sealed therewith to ensure that the interior of the male connector and the female connector are in a sealed state. More specifically, a thread seven 181 is provided on the inner wall of the steel cable screw sleeve 18, a thread five 115 is provided on the outer wall of the male connecting sleeve 11, and a thread ten 225 is provided on the outer wall of the female connecting sleeve 22. The thread seven 181 is adapted to the thread five 115, and the thread seven 181 is adapted to the thread ten 225.

[0083] Furthermore, in order to ensure the sealing effect of the outlet ends of the male connector and the female connector, as Figure 2 , Figure 3 , Figure 7 , Fig.12As shown, a sealing ring seven 17 is provided on the male connecting sleeve 11 and the female connecting sleeve 22. More specifically, an annular groove eight 116 for assembling the sealing ring seven 17 is provided on the male connecting sleeve 11, and an annular groove ten 226 for assembling the sealing ring seven 17 is provided on the female connecting sleeve 22. The sealing ring seven 17 is squeezed with the inner wall of the steel cable nut 18 to form a radial seal, thereby ensuring the sealing effect between the male connecting sleeve 11 and the steel cable nut 18, and between the female connecting sleeve 22 and the steel cable nut 18.

[0084] A rubber cable sheath 20 and a metal gasket 21 are sleeved at the position covered by the corresponding steel cable nut 18 of the single-core steel cable 13, a second conical surface 191 is arranged on the inner side of the end of the rubber sheath pressing cylinder 19, and a third conical surface 201 is arranged on the outer side of the end of the rubber cable sheath 20; the steel cable sheath 18 is threadedly matched with the male connecting sleeve 11 or the female connecting sleeve 22, and the metal gasket 21, the rubber cable sheath 20 and the rubber sheath pressing cylinder 19 are squeezed in sequence until the end of the steel cable sheath 18, wherein the end of the rubber cable sheath 20 is inserted into the interior of the rubber sheath pressing cylinder 19, and the second conical surface 191 is matched with the third conical surface 201; at this time, the metal gasket 21, the rubber cable sheath 20 and the rubber sheath pressing cylinder 19 are pressed against each other, and the rubber cable sheath 20 tightly embraces the single-core steel cable 13, forming a radial extrusion seal, thereby ensuring the sealing effect between the single-core steel cable 13 and the steel cable nut 18.

[0085] In order to further ensure the reliability of the steel wire armor cable assembly, the following improvements are made to the pressure-bearing performance of the steel wire armor cable assembly, such as Figure 2 , Figure 7 As shown, the gap between the male connecting sleeve 11 and the single-core steel cable 13 forms a cavity 1, and a countersunk hole 114 is opened at the position of the male connecting sleeve 11 corresponding to the single-core steel cable 13. As shown in the figure, the countersunk holes 114 are arranged as two distributed in the upper and lower directions, and the countersunk holes 114 are threadedly matched with an oil blocking screw 14. The oil blocking screw 14 is provided with a sealing ring 6 15, and an extrusion seal is achieved with the male connecting sleeve 11. The insulating hydraulic oil is vacuum filled into the cavity 1 through the countersunk hole 114 below, and the upper and lower oil blocking screws 14 are tightened to form an oil seal pressure balance between the inside of the male connector and the external environment; wherein, in order to ensure that the insulating hydraulic oil fills the entire cavity 1, an axially through oil groove 1 is opened on the single-core rubber connector 12, so that the insulating hydraulic oil covers the single-core rubber connector 12 and fills the cavity 1.

[0086] like Figure 3 , Fig.14As shown, the gap between the female connecting sleeve 22 and the single-core steel cable 13 forms a cavity 2, and the outer ring side wall of the female pressure-bearing seat 26 is provided with an oil groove 263 connected to the cavity 2, and the female screw sleeve 23 is provided with a countersunk hole 2 at the position corresponding to the oil groove 263. As shown in the figure, the countersunk hole 2 is arranged as two distributed in the upper and lower directions, and the countersunk hole 2 thread is matched with an oil blocking screw 2 30, and the oil blocking screw 2 30 is provided with a sealing ring 11 32, and the extrusion seal is achieved with the female screw sleeve 23, and the insulating hydraulic oil is vacuum filled into the cavity 2 through the lower countersunk hole 2, and the upper and lower oil blocking screws 2 30 are tightened, and the oil seal pressure balance is formed between the inside of the female connector and the external environment; wherein, to ensure that the insulating hydraulic oil fills the entire cavity 2, an axially through oil groove 3 is provided on the single-core rubber connector 28, so that the insulating hydraulic oil covers the single-core rubber connector 28 and fills the cavity 1.

[0087] In the steel wire armor cable assembly of the present technical solution, a sealed cavity one formed between the male connecting sleeve 11 and the single-core steel cable 13, and a sealed cavity two formed between the female connecting sleeve 22 and the single-core steel cable 13 are vacuum filled with insulating hydraulic oil, so that an oil seal pressure balance is formed between the inside of the male connector and the external environment, thereby achieving a high-temperature pressure-bearing seal at the A end of the single-core steel cable 13, and an oil seal pressure balance is formed between the inside of the female connector and the external environment, thereby achieving a high-temperature pressure-bearing seal at the B end of the single-core steel cable 13, thereby improving the high-temperature pressure-bearing performance of the steel wire armor cable assembly. Example 2

[0088] like Fig.15 , Fig.16 , Fig.17 , Fig.18 , Fig.19 As shown, a flexible long-cable drilling tool comprises any of the above-mentioned steel wire armor cable assemblies and a drilling tool outer shell used in conjunction with the steel wire armor cable assembly;

[0089] The outer shell of the drilling tool includes an upper connection part of the drill rod, a drill rod adapter part and a lower connection part of the drill rod. The drill rod adapter part includes a ball head connecting rod 33 axially passing through the middle part and a ball seat connecting rod 34 spherically sealed with the ball head connecting rod 33. The length of the drill rod adapter part can be changed according to the use requirements by changing the number of ball head connecting rods 33 and ball seat connecting rods 34.

[0090] The upper connection part of the drill pipe includes an upper sleeve 37 of the drill pipe rigidly connected to the ball seat connecting rod 34, a baffle 40 arranged inside the upper sleeve 37 of the drill pipe, and a pressure ring 39 threadedly matched with the inner wall of the upper sleeve 37 of the drill pipe. A thread 15 371 is provided on the inner wall of the upper sleeve 37 of the drill pipe. The pressure ring 39 is matched with the step surface of the upper sleeve 37 of the drill pipe to clamp and fix the baffle 40. A through hole is axially arranged on the baffle 40 for the circulation of mud and sand.

[0091] The lower connection part of the drill pipe includes a lower sleeve 35 of the drill pipe rigidly connected to the ball head connecting rod 33, a baffle plate 2 36 arranged inside the lower sleeve 35 of the drill pipe, and a pressure cylinder 41 rigidly connected to the butt end of the lower sleeve 35 of the drill pipe. A thread thirteen 351 is provided on the lower sleeve 35 of the drill pipe for assembly with the pressure cylinder 41 by screws. The pressure cylinder 41 cooperates with the step surface of the lower sleeve 35 of the drill pipe to clamp the baffle plate 2 36. The baffle plate 2 36 is axially provided with a through hole for the circulation of mud and sand. The male connector is sleeved with a fixed baffle plate 1 40 fixed to the inside of the upper connection part of the drill pipe, and the female connector is sleeved with a baffle plate 2 36 fixed to the inside of the lower connection part of the drill pipe to avoid axial movement.

[0092] When multiple sections of the flexible long cable drilling tool are used in series, the upper connection part of the drill pipe also includes a pressure cylinder pad 38, and the adjacent upper connection parts of the drill pipe and the lower connection parts of the drill pipe are assembled, more specifically, threaded matching. A thread 16 372 is opened on the inner wall of the drill pipe upper sleeve 37, and a thread 14 353 is opened on the outer wall of the drill pipe lower sleeve 35. The thread 16 372 is adapted to the thread 14 353. The pressure cylinder 41 cooperates with the pressure ring 39 to squeeze and fix the pressure cylinder pad 38. The pressure cylinder pad 38 is made of Teflon material to fill the gap between the upper connection part and the lower connection part of the drill pipe. The pressure ring 39 under the pressure cylinder pad 38 will not have the thread loosened due to vibration, thereby improving the reliability of the connection.

[0093] The flexible long-cable drilling tool in the technical solution is suitable for shallow well exploration in a single section, and is suitable for deep well exploration in multiple sections connected in series.

[0094] The flexible long cable drilling tool in the present technical solution adopts a steel wire armor cable assembly. The male connector at the A end of the single-core steel cable 13 is sleeved with a fixed baffle 1 40 and fixed inside the upper connection part of the drill pipe, and the female connector at the B end is sleeved with a baffle 2 36 and fixed inside the lower connection part of the drill pipe. One end of the outer shell of the drill tool rotates to drive the single-core steel cable 13 to extend or compress inside the outer shell of the drill tool, so that the flexible long cable drilling tool has a length compensation function.

[0095] In the flexible long-cable drilling tool of the present technical solution, the length of the single-core steel cable 13 in the steel wire armor cable assembly is not limited by the length of the traditional vulcanization process. In conjunction with the external shell of the drill tool, the length of the steel wire armor cable in the signal transmission section can be freely adjusted. The steel wire cable used for signal transmission during work does not require multiple plug-ins, and the signal transmission has good stability and high reliability. At the same time, it solves the problem of insufficient length of the flexible drilling tool during deep well exploration. In the flexible long-cable drilling tool of the present technical solution, the steel cable in the drilling tool is in direct contact with the high-speed mud medium, and has better erosion resistance than the traditional integrally vulcanized rubber structure cable, thereby improving its service life.

[0096] In order to further improve the reliability of the flexible long cable drilling tool, an anti-rotation structure is set between the steel wire armor cable assembly and the outer shell of the drilling tool. Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the baffle 40 is slidably matched with the sleeve 37 on the drill pipe in the axial direction, the male connecting sleeve 11 passes through the baffle 40 and is slidably matched with it in the axial direction, the male connecting sleeve 11 is threadedly matched with the male screw sleeve 01, and the step on the male connecting sleeve 11 and the step on the male screw sleeve 01 clamp and fix the baffle 40, so as to prevent the male head connector from driving the single-core steel cable 13 to rotate.

[0097] Baffle plate 2 36 is axially slidably matched with the lower sleeve 35 of the drill pipe, the female connecting sleeve 22 passes through baffle plate 26 and is axially slidably matched with it, the female connecting sleeve 22 is threadedly matched with the female screw sleeve 23, the step on the female connecting sleeve 22 and the step on the female screw sleeve 23 clamp and fix baffle plate 26 to prevent the female head connector from driving the single-core steel cable 13 to rotate.

[0098] More specifically, the anti-rotation structure between the drill pipe lower sleeve 35 and the second baffle 36 is consistent with the anti-rotation structure between the drill pipe upper sleeve 37 and the baffle 1 40. Taking the drill pipe lower sleeve 35 and the second baffle 36 as an example, the baffle 2 36 is provided with a keyway 361, and the inner wall of the drill pipe lower sleeve 35 is provided with a convex key 352. When the second baffle 36 is installed in the lower sleeve 35 of the drill pipe, the convex key 352 cooperates with the keyway 361.

[0099] The anti-rotation structure between the female connecting sleeve 22 and the baffle plate 36 is consistent with the anti-rotation structure between the male connecting sleeve 11 and the baffle plate 40. Taking the female connecting sleeve 22 and the baffle plate 36 as an example, a flat position A362 is provided on the baffle plate 36, and a flat position B224 is provided on the female connecting sleeve 22. When the female connecting sleeve 22 and the baffle plate 36 are assembled, the flat position A362 cooperates with the flat position B224 to achieve an anti-rotation effect.

[0100] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A steel wire armor cable assembly, used in conjunction with an outer housing of a drilling tool, the steel wire armor cable assembly comprising a single-core steel cable, characterized in that: The single-core steel cable is provided with a bending section at the middle position; the single-core steel cable has an A end and a B end, the A end is provided with a male connector, and the B end is provided with a female connector; The male connector and the female connector are respectively fixed to two ends of the outer shell of the drilling tool, and one end of the outer shell of the drilling tool rotates to drive the single-core steel cable to extend or compress in the outer shell of the drilling tool; The male connector includes a male connector sleeve axially passing through the middle part, the single-core steel cable passes through the outlet end of the male connector sleeve and is sealed and matched therewith, the A end of the single-core steel cable is located inside the male connector sleeve and is equipped with a single-core rubber connector 1, the single-core rubber connector 1 extends to the outside of the male connector sleeve and is sealed and plugged with a sealed single-core connector 1, the sealed single-core connector set is provided with and cooperates with the male connector sleeve to clamp a stopper sleeve, the outer circle thread of the stopper sleeve is matched with a male pressure seat, one end of the male pressure seat axially extends to seal and cover the middle part of the sealed single-core connector 1, the other end of the male pressure seat axially extends to seal and cover the end of the male connector sleeve, and is threadedly connected to the male connector sleeve through a top screw 1, the outer circle thread of the male connector sleeve is matched with a male screw sleeve, the male screw sleeve axially extends to seal and cover the male connector sleeve, seal and cover the fixed male pressure seat, and cover the sealed single-core connector 1 in sequence, and the interior of the male connector forms a sealed state; The female connector includes a female connector sleeve axially penetrated in the middle, the single-core steel cable passes through the outlet end of the female connector sleeve and is sealed and matched therewith, the B end of the single-core steel cable is located inside the female connector sleeve and is equipped with a single-core rubber connector 2, the single-core rubber connector 2 is sealed and plugged with a sealed single-core connector 2, the sealed single-core connector 2 is extended to the outside of the female connector sleeve and is sealed and plugged with a single-core rubber connector 3, the sealed single-core connector 2 is sealed and threadedly matched with a female pressure-bearing seat, one end of the female pressure-bearing seat axially extends to seal and cover the end of the single-core rubber connector 3 and abuts and fixes it, the other end of the female pressure-bearing seat axially extends to seal and cover the end of the female connector sleeve, and is threadedly connected to the female connector sleeve through a top screw 2, the outer ring thread of the female connector sleeve is matched with a female screw sleeve, the female screw sleeve axially extends to seal and cover the female connector sleeve, seal and cover the fixed female pressure-bearing seat, and cover the single-core rubber connector 3 in sequence; When multiple sections of the steel wire armor cable assembly are used in series, adjacent male connectors and female connectors are plugged in and matched, wherein sealed single-core connector one and single-core rubber connector three are sealed and plugged in and matched, the male thread sleeve is inserted into the interior of the female thread sleeve and sealed therewith, and the interior of the male connector, the interior of the female connector, and the plug-in space between the male connector and the female connector are all sealed.

2. The steel wire armor cable assembly according to claim 1, characterized in that: The male pressure seat is provided with a sealing ring three, and the sealing ring three is squeezed with the inner wall of the male screw sleeve to form a radial seal. The male connecting sleeve is provided with a sealing ring four, and the sealing ring four is squeezed with the inner wall of the male pressure seat to form a radial seal. The male connecting sleeve is provided with a sealing ring five, and the sealing ring five is squeezed with the inner wall of the male screw sleeve to form a radial seal. The female connecting sleeve is provided with a sealing ring eight, and the sealing ring eight is squeezed with the inner wall of the female screw sleeve to form a radial seal. The female pressure-bearing seat is provided with a sealing ring nine, and the sealing ring nine is squeezed with the inner wall of the female screw sleeve to form a radial seal.

3. The steel wire armor cable assembly according to claim 1, characterized in that: The sealed single-core connector is provided with a sealing ring 2, and the sealing ring 2 is squeezed with the inner wall of the male pressure seat to form a radial seal. The sealed single-core connector is provided with a convex bulge 3, and the convex bulge 3 is squeezed with the convex bulge groove provided on the rubber sleeve of the single-core rubber connector to form a seal; The sealed single-core connector 2 is provided with a sealing ring 10, and the sealing ring 10 is squeezed with the inner wall of the female pressure-bearing seat to form a radial seal. The sealed single-core connector 2 is provided with a convex bulge 3 and a convex bulge 4, and the convex bulge 3 is squeezed with the convex bulge groove provided on the rubber sleeve of the single-core rubber connector 2 to form a seal, and the convex bulge 4 is squeezed with the first convex bulge groove provided on the rubber sleeve of the single-core rubber connector 3 to form a seal.

4. The steel wire armor cable assembly according to claim 3, characterized in that: The sealed single-core connector is provided with a convex bump, and the male screw sleeve is provided with a sealing ring; When multiple sections of the steel wire armor cable assembly are used in series, adjacent male connectors and female connectors are plugged together, wherein the convex bulge 1 and the second convex bulge groove provided on the rubber sleeve of the single-core rubber connector 3 are squeezed to form a seal, and the sealing ring 1 is squeezed with the inner wall of the female screw sleeve to form a radial seal.

5. The steel wire armor cable assembly according to claim 1, characterized in that: A fixing piece is provided between the outlet end of the male connecting sleeve and the outlet end of the female connecting sleeve and the single-core steel cable; The fixing part comprises a steel cable fixing cylinder sleeved on the single-core steel cable, a rubber sleeve pressing cylinder sleeved on the single-core steel cable and threadedly matched with the steel cable fixing cylinder, a cone frame for fixing the single-core steel cable is arranged inside the steel cable fixing cylinder, a cone surface 1 is arranged on the outside of the steel cable fixing cylinder, a cone surface A and a step surface are arranged inside the male connecting sleeve and the female connecting sleeve, and the rubber sleeve pressing cylinder is threadedly matched with the steel cable fixing cylinder until the cone surface 1 contacts the cone surface A and the end of the rubber sleeve pressing cylinder contacts the step surface; The fixing part also includes a steel cable screw sleeve which is thread-sealed with the male connecting sleeve or the female connecting sleeve, and the single-core steel cable passes through the steel cable screw sleeve and is sealed with the male connecting sleeve.

6. The steel wire armor cable assembly according to claim 5, characterized in that: The male connecting sleeve and the female connecting sleeve are provided with a sealing ring 7, and the sealing ring 7 is squeezed with the inner wall of the cable screw sleeve to form a radial seal; The single-core steel cable is provided with a rubber cable sheath and a metal gasket at the position covered by the corresponding steel cable screw sleeve, the inner side of the end of the rubber sheath pressure cylinder is provided with a second cone surface, and the outer side of the end of the rubber cable sheath is provided with a third cone surface; The wire cable screw sleeve is threadedly matched with the male connecting sleeve or the female connecting sleeve until the end of the wire cable screw sleeve is squeezed with the metal gasket, the rubber wire sleeve and the rubber sleeve pressing cylinder in sequence, wherein the end of the rubber wire sleeve is inserted into the interior of the rubber sleeve pressing cylinder, and the second cone surface is matched with the third cone surface.

7. The steel wire armor cable assembly according to claim 1, characterized in that: The gap between the male connection sleeve and the single-core steel cable forms a cavity 1, the male connection sleeve is provided with a countersunk hole 1 at the position corresponding to the single-core steel cable, the countersunk hole 1 is threadedly matched with an oil-blocking screw 1, the oil-blocking screw 1 is provided with a sealing ring 6, and the sealing is achieved with the male connection sleeve. The insulating hydraulic oil is filled into the cavity 1 through the countersunk hole 1, and the inside of the male connector forms an oil seal pressure balance with the external environment; The gap between the female connecting sleeve and the single-core steel cable forms cavity 2, the outer ring side wall of the female pressure-bearing seat is provided with oil groove 2 connected with cavity 2, the female screw sleeve is provided with countersunk hole 2 at the position corresponding to the oil groove 2, the countersunk hole 2 thread is matched with oil blocking screw 2, the oil blocking screw 2 is provided with sealing ring 11, and realizes extrusion sealing with the female screw sleeve, and insulating hydraulic oil is vacuum filled into cavity 2 through countersunk hole 2, and oil seal pressure balance is formed between the inside of the female connector and the external environment.

8. A flexible long-cable drilling tool, characterized in that: A steel wire armor cable assembly comprising the steel wire armor cable assembly according to any one of claims 1 to 7, and an outer shell of a drilling tool used in conjunction with the steel wire armor cable assembly; The outer shell of the drilling tool comprises an upper connecting part of the drill rod, a drill rod adapter and a lower connecting part of the drill rod, wherein the drill rod adapter comprises a ball head connecting rod axially penetrating the middle part and a ball seat connecting rod sealingly matched with the spherical surface of the ball head connecting rod; The drill rod upper connection part includes a drill rod upper sleeve rigidly connected to the ball seat connecting rod, a baffle plate arranged inside the drill rod upper sleeve, and a pressure ring threadedly matched with the inner wall of the drill rod upper sleeve, wherein the pressure ring is matched with the step surface of the drill rod upper sleeve to clamp and fix the baffle plate; The lower connecting part of the drill rod comprises a lower sleeve of the drill rod rigidly connected to the ball head connecting rod, a baffle plate 2 arranged inside the lower sleeve of the drill rod, and a pressure cylinder rigidly connected to the butt end of the lower sleeve of the drill rod, and the pressure cylinder cooperates with the step surface of the lower sleeve of the drill rod to clamp the baffle plate 2; the male connector is sleeved with a fixed baffle plate 1 and fixed inside the upper connecting part of the drill rod, and the female connector is sleeved with a baffle plate 2 and fixed inside the lower connecting part of the drill rod; When the flexible long-cable drilling tool is used in multiple sections in series, the upper connection part of the drill pipe also includes a pressure cylinder pad, and the adjacent upper connection parts of the drill pipe and the lower connection parts of the drill pipe are assembled, and the pressure cylinder cooperates with the pressure ring to squeeze and fix the pressure cylinder pad.

9. The flexible long-cable drilling tool according to claim 8, characterized in that: The baffle plate 1 is axially slidably matched with the sleeve on the drill pipe, the male connecting sleeve passes through the baffle plate 1 and is axially slidably matched with the sleeve, the male connecting sleeve thread is matched with the male screw sleeve, and the step on the male connecting sleeve and the step on the male screw sleeve clamp and fix the baffle plate 1; The second baffle plate is axially slidably matched with the lower sleeve of the drill pipe, the female connecting sleeve passes through the second baffle plate and is axially slidably matched with it, the female connecting sleeve thread is matched with the female screw sleeve, and the step on the female connecting sleeve and the step on the female screw sleeve clamp and fix the second baffle plate.

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