Novel bypass device

Abstract

The utility model is applicable to the field of logging tools, and particularly relates to a novel bypass device which comprises a main body, a through hole arranged in the middle of the main body, an inclined hole arranged at one end of the main body, a platform arranged at the other end of the main body, a sinking groove arranged in the middle of the platform, and threaded holes arranged on two sides of the sinking groove. The cover plate is mounted on the platform and detachably connected with the main body; the cable clamping plate is fixed between the cover plate and the platform and can be detachably connected with the main body; the blowout prevention device is embedded in the inclined hole, a sealing device is clamped in the blowout prevention device, a cable penetrates through the blowout prevention device and the sealing device, one end of the cable enters a well along with a drilling tool, and the other end of the cable penetrates through the cable clamping plate to be fixed on the main body. The blowout preventer and the sealing device are adopted in the bypass device, sealing performance is good, reliable butt joint is guaranteed, emergencies such as blowout can be effectively handled, construction progress and logging timeliness are improved, and labor intensity of operators is relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of well logging tools, and in particular relates to a novel bypass device. Background Art

[0002] The bypass is a device used in petroleum open hole logging operations to power downhole instruments. When the ground cable is continuously lowered into the well through the bypass, the downhole wet joint tool can be successfully "docking" and the high-pressure gas and liquid in the well can be prevented from spraying to the ground through the drill pipe, meeting the logging requirements of horizontal wells and high-angle wells.

[0003] On the one hand, the existing bypass has poor sealing performance and cannot withstand high-pressure gas and liquid in the well. On the other hand, after the logging cable breaks and is pulled out from the inclined hole of the bypass, the inclined hole cannot be closed automatically, causing the high-pressure gas and liquid in the well to spray to the ground through the drill pipe, seriously affecting the safety of ground personnel and equipment.

[0004] In view of the above problems, the purpose of the utility model is to provide a blowout-proof and high-pressure resistant bypass short section to prevent high-pressure gas and liquid from spraying out from the bypass hole and complete necessary production operations.

[0005] In summary, a new bypass is urgently needed to solve the problem that the existing bypass has poor sealing performance and cannot withstand the high-pressure liquid and gas in the well. Utility Model Content

[0006] The embodiment of the utility model provides a novel bypass device, aiming to solve the problem that the existing bypass device has poor sealing performance and cannot withstand high-pressure liquid and gas in the well.

[0007] The utility model embodiment is achieved in this way:

[0008] A new bypass device comprises: a main body, a through hole is provided in the middle of the main body, an inclined hole is provided at one end of the main body, one end of the inclined hole is connected to the outside, and the other end is connected to the through hole, a platform is provided at the other end of the main body, a sink groove is provided in the middle of the platform, and threaded holes are provided on both sides of the sink groove, characterized in that:

[0009] A cover plate mounted on the platform and detachably connected to the main body; and

[0010] a cable cleat fixed between the cover plate and the platform and detachably connectable to the main body; and

[0011] A blowout preventer is embedded in the inclined hole, wherein a sealing device is clamped inside the blowout preventer, a cable passes through the blowout preventer and the sealing device, one end of the cable extends into the well along with the drilling tool, and the other end passes through a cable clamp and is fixed on the main body.

[0012] Furthermore, the front end of the main body is provided with an external thread, the bottom of the inclined hole is provided with a positioning block, the middle of the transition edge between the inclined hole and the platform is provided with a transition groove, and the middle of the transition edge between the platform and the main body is provided with a guide groove.

[0013] Furthermore, the blowout prevention device comprises:

[0014] Blowout proof screws;

[0015] The front end of the blowout-proof screw extends out of the inclined hole, and the rear end is connected to the sealing device. A blowout-proof through hole is provided inside the blowout-proof screw, and a groove is provided at the rear end of the blowout-proof through hole; and

[0016] A blowout-proof steel pad, the rear end of which is squeezed onto a positioning block at the bottom of the inclined hole, and the front end of which is connected to a sealing device.

[0017] Furthermore, the sealing device comprises:

[0018] The front end of the sealing block is provided with a shape similar to the embedding groove, and the rear end is provided with a conical through hole, and the upper end of the sealing block is embedded in the embedding groove; and

[0019] A sealing rubber block installed at the rear end of the sealing pressing block, the front end of the sealing rubber block is connected to the sealing pressing block, and the rear end is connected to the sealing rubber pad through a sealing ring; and

[0020] A sealing rubber pad is squeezed between the sealing rubber block and the anti-spray steel pad.

[0021] Furthermore, a reserved groove is provided in the middle of the cover plate, a groove is provided on the inner side of the cover plate, and the reserved groove passes through the cover plate and passes through the groove; and

[0022] Countersunk screw holes are arranged on the cover plates on both sides of the reserved groove, and guide grooves are arranged on both sides of the groove.

[0023] Furthermore, the anti-blowout screw is provided with an embedding groove for embedding the sealing pressing block, and the shape of the embedding groove is adapted to the outer shape of the sealing pressing block.

[0024] Furthermore, a double-layer sealing rubber ring is provided at the upper end of the sealing pressing block, a single-layer sealing rubber ring is provided at the lower end of the sealing pressing block, and a conical sealing groove is provided inside the sealing pressing block.

[0025] Furthermore, the front end of the sealing rubber block is conical and can be embedded in the sealing groove of the sealing pressing block. A through-hole is provided inside the sealing rubber block, and a plurality of annular buffer grooves are provided in the through-hole.

[0026] Furthermore, the anti-blowout steel pad is composed of two semicircular steel sheets, each of which has a semicircular through hole in the middle, a connecting key at the front end of the steel sheet, and a connecting hole corresponding to the connecting key at the rear end of the steel sheet.

[0027] Furthermore, the cable clamp is composed of two clamping blocks, a cable groove runs through the middle of the clamping block, the two clamping blocks are detachably connected, and the material of the clamping block is copper.

[0028] A well logging tool comprises the novel bypass device mentioned above.

[0029] The beneficial effects achieved by the utility model are:

[0030] The utility model increases the sealing and safety of the bypass by arranging a blowout prevention device and a sealing device in the main body. Compared with the existing bypass, the utility model can effectively avoid the occurrence of emergency situations such as blowouts, and an extra-large inclined hole is provided for the torpedo head to enter, thereby eliminating the need to re-make the torpedo head each time, improving the construction progress and logging time efficiency, and reducing the labor intensity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a cross-sectional view of a novel bypass device provided by the utility model;

[0032] Figure 2 It is a structural schematic diagram of a novel bypass device of the utility model;

[0033] Figure 3 It is a schematic diagram of the cover plate of the utility model;

[0034] Figure 4 It is a schematic diagram of the anti-blowout screw of the utility model;

[0035] Figure 5 It is a schematic diagram of the sealing pressing block of the utility model;

[0036] Figure 6 It is a schematic diagram of the sealing rubber block of the utility model;

[0037] Figure 7 It is a schematic diagram of the anti-spray steel pad of the utility model;

[0038] Figure 8 It is a schematic diagram of the cable clamp of the utility model.

[0039] Figure Number:

[0040] 100. Bypass device;

[0041] 110, main body; 111, through hole; 112, external thread; 113, positioning block;

[0042] 120, oblique hole;

[0043] 130, platform; 131, sink; 132, guide groove; 133, transition groove;

[0044] 140, cover plate; 141, groove; 142, reserved groove; 143, countersunk screw hole;

[0045] 150, cable clamp; 151, clamp block;

[0046] 200, blowout prevention device; 210, blowout prevention steel pad; 211, connection key; 212, connection hole; 220, blowout prevention screw; 221, embedded groove;

[0047] 300, sealing device; 310, sealing rubber pad; 320, sealing rubber block; 321, buffer groove; 330, sealing pressure block; 331, double-layer sealing rubber ring; 332, single-layer sealing rubber ring. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0049] The utility model increases the sealing and safety of the bypass by arranging a blowout prevention device and a sealing device in the main body. Compared with the existing bypass, the utility model can effectively avoid the occurrence of emergency situations such as blowouts. In addition, the utility model is provided with an extra-large inclined hole for the torpedo head to enter, thereby eliminating the need to re-make the torpedo head each time, improving the construction progress and logging time efficiency, and reducing the labor intensity of the operators.

[0050] Well testing bypass plays an important role in oil well testing. It can ensure the normal progress of the test and can effectively control the fluid and pressure to ensure the safety and reliability of the work.

[0051] Embodiment 1

[0052] Reference Figure 1 In an embodiment of the utility model, a new bypass device 100 is provided, comprising:

[0053] A main body 110, a through hole 111 is provided in the middle of the main body 110, an inclined hole 120 is provided at one end of the main body 110, one end of the inclined hole 120 is connected to the outside, and the other end is connected to the through hole 111, a platform 130 is provided at the other end of the main body 110, a sink 131 is provided in the middle of the platform 130, and threaded holes are provided on both sides of the sink 131, a cover plate 140 is installed on the platform 130 and is detachably connected to the main body 110; and a cable clamp plate 150 is fixed between the cover plate 140 and the platform 130 and is detachably connected to the main body 110; and

[0054] The blowout preventer 200 is embedded in the inclined hole 120 , and the cable passes through the blowout preventer 200 and the sealing device 300 , one end of the cable extends into the well along with the drilling tool, and the other end passes through the cable clamp plate 150 and is fixed on the main body 110 .

[0055] The bypass 100 is a tool for cable transmission in oilfield logging operations. When performing logging operations, it is necessary to power the downhole test instrument and transmit the instrument detection signal back to the ground terminal to obtain relevant geological structure parameters or data related to the downhole. The bypass 100 provides a channel for the ground cable to be lowered, so that the cable can be input into the well through the bypass 100 and docked with the downhole instrument.

[0056] In this embodiment, the main body 110 is used for cable transmission protection. A through hole 111 is provided in the middle part of the main body 110. The front end of the main body 110 can be connected to the logging instrument through a thread. An inclined hole 120 is provided at one end of the main body 110. One end of the inclined hole 120 is connected to the outside world, and the other end is connected to the through hole 111. The cable can enter the through hole 111 through the inclined hole 120, thereby ensuring that the cable is transferred from the outside of the drill pipe to the inside of the drill pipe. A platform 130 is provided at the other end of the main body 110. A sink 131 is provided in the middle of the platform 130, and threaded holes are provided on both sides of the sink 131. It is easy to understand that a through hole 111 is provided inside the main body 110, and an inclined hole 120 is provided at one end of the main body 110. The inclined hole 120 is connected to the through hole 111, and a platform 130 is provided at the other end of the main body 110, and the inclined hole 120 is located on one side of the platform 130.

[0057] Furthermore, in this embodiment, the main body 110 can be made of stainless steel with good strength and durability, or a titanium alloy with high strength and low density, or a polymer with good corrosion resistance, insulation and low density.

[0058] In another embodiment, a cover plate 140 is detachably mounted on the platform 130, and a cable clamp 150 is detachably connected between the cover plate 140 and the platform 130. Furthermore, the detachable connection between the cover plate 140 and the main body 110, and between the cable clamp 150 and the main body 110 may specifically be one or more of a threaded connection, a locking connection, a snap connection, and the like. The above specific description of the detachable connection is merely exemplary and should not be construed as a limitation to the present invention, and may be selected according to actual needs.

[0059] In another embodiment, a blowout preventer 200 is also embedded in the inclined hole 120, one end of the cable passes through the blowout preventer 200 and the sealing device 300 and extends into the well, and the other end is fixed to the main body 110 through the cable clamp 150. It is easy to understand that the blowout preventer 200 is used to prevent the high-pressure gas and liquid in the well from being sprayed out, the outer diameter of the blowout preventer 200 is equivalent to the inner diameter of the inclined hole 120, the blowout preventer 200 can be embedded in the inclined hole 120, and a sealing device 300 is also clamped in the blowout preventer 200, and the high-pressure liquid in the well can be sealed in the bypass 100 through the sealing device 300, the cable passes through the blowout preventer 200 and the sealing device 300, passes through the inclined hole 120 and the through hole 111 of the main body 110 and goes deep into the well, and the other end is fixed to the main body 110 through the cable clamp 150.

[0060] Furthermore, in the present embodiment, the cable clamp 150 can be specifically a cable clamp, which fixes the cable on the platform 130 of the main body 110 by clamping the cable; it can also be a cable tray, which places the cable in the groove of the tray and maintains stability through support and fixation; it can also be a cable fixing plate, which passes through the holes or slots on the fixing plate and is fixed with screws or other fixings.

[0061] The above descriptions of specific types of cable fixing devices are merely exemplary and should not be construed as limiting the present invention. It is understood that the cable fixing device may also be other components capable of clamping and fixing in addition to the above.

[0062] Based on the above structure, when the bypass 100 is installed, the bypass 100 is hoisted, and the cable is sequentially passed through the sealing device 300 and one end of the blowout preventer 200 and extended into the well, and then the blowout preventer 200 is clamped to the sealing device 300, and then the blowout preventer 200 and the sealing device 300 are embedded in the inclined hole 120 together, and then the cable clamp 150 is used to embed the other end of the cable into the 131 sink groove on the platform 130 of the main body 110, and then the cover plate 140 is fixed on the main body 110, and finally the bypass 100 is connected to the drill pipe down the well; when it is necessary to extend the cable into the well, the clamping force of the cable clamp 150 is reduced, and the cable will sequentially pass through the sealing device 300 and the blowout preventer 200 and extend into the well, and the cable clamp 150 is clamped after reaching the predetermined position, and when it is necessary to pull the cable out of the well, the clamping force of the cable clamp 150 is reduced to pull the cable out of the well.

[0063] By arranging the blowout prevention device 200 and the sealing device 300 in the main body 110, the sealing performance is good, the docking is reliable, and the occurrence of emergency situations such as blowouts can be effectively dealt with; at the same time, the inclined hole 120 is arranged in the main body 110, which has a simple structure and is easy to use. The extra-large side inclined hole 120 allows the torpedo to pass directly, eliminating the need to re-make the torpedo head each time, thereby improving the construction progress and logging time efficiency and reducing the labor intensity of the operators.

[0064] In this embodiment, all parts except the main body 110 and the cover plate 140 can be universal parts, which makes it easier to prepare and replace parts, reduces equipment difficulty, and saves costs.

[0065] Embodiment 2

[0066] See also Figure 1 and Figure 2 In the embodiment of the utility model, an external thread is provided at the front end of the main body 110, a positioning block 113 is provided at the bottom of the inclined hole, a transition groove 133 is provided in the middle of the transition edge between the inclined hole 120 and the platform 130, and a guide groove 132 is provided in the middle of the transition edge between the platform 130 and the main body 110.

[0067] In one embodiment, the front end of the main body 110 is provided with an external thread 112, and the main body 110 of the bypass device 100 can be connected to other instruments through threaded connection. A positioning block 113 is provided at the bottom of the inclined hole 120, which can better position and install the blowout preventer 200 when it is installed.

[0068] In another embodiment, a transition groove 133 is provided in the middle of the transition edge between the inclined hole 120 and the platform 130, and a guide groove 132 is provided in the middle of the transition edge between the platform 130 and the main body 110. The transition groove 133 is used to facilitate the installation of the blowout preventer 200 and the sealing device 300, and the guide groove 132 is used to guide the cable to extend from under the cable clamp plate 150 to the outside of the main body 110, so that the cable can be pulled out or lowered into the well more smoothly.

[0069] Furthermore, in one embodiment, the shape of the transition groove 133 can be a square transition groove 133 (Square Transition Duct), the four corners of the square transition groove 133 are right angles, and its cross-sectional shape is a square or a rectangle; in another embodiment, the shape of the transition groove 133 can be a round transition groove 133 (Round Transition Duct), and the round transition groove 133 is a transition groove 133 with a circular cross-section, which can make the cable transition smoother and smoother; in another embodiment, the shape of the transition groove 133 can be a transition groove 133 with a certain shape, specifically U-shaped, L-shaped or Z-shaped. The above description of the shape of the transition groove 133 is only exemplary and should not be understood as a limitation to the present utility model. It can be selected according to actual needs.

[0070] Furthermore, in another embodiment, the guide groove 132 may be a round guide groove 132 (Round Duct), which is a guide groove 132 with a circular cross-section, which can make the turning of the cable smoother; in another embodiment, the guide groove 132 may also be a semi-circular guide groove 132 (Semi-circular Duct), which is a guide groove 132 with a semi-circular cross-section; in yet another embodiment, the guide groove 132 may be a U-shaped guide groove 132 (U-shaped Duct), and the two sides of the U-shaped guide groove 132 are right angles, which can provide better protection and guidance for the cable.

[0071] Furthermore, in another embodiment, the shape of the positioning block 113 at the bottom of the inclined hole 120 can be square, circular, or conical. The above description of the specific shape of the low and high is only exemplary and should not be construed as a limitation of the present utility model. It can be understood that the positioning block 113 can also be other bosses that can play a positioning role in addition to the above.

[0072] The front end of the main body 110 is more firmly connected to the drill pipe by providing an external thread 112. A positioning block 113 is provided at the bottom of the inclined hole 120 to play a positioning role when installing the blowout preventer 200, making the installation of the blowout preventer 200 more accurate and portable. In order to make the operation of the cable smoother, a transition groove 133 and a guide groove 132 are provided on the main body 110 to prevent the cable from being worn and increase the service life of the cable.

[0073] Embodiment 3

[0074] See also Figure 1 and Figure 2 In the embodiment of the utility model, the blowout prevention device 200 includes:

[0075] Anti-spray screw 220;

[0076] The front end of the anti-blowout screw 220 extends out of the inclined hole 120, and the rear end is connected to the sealing device 300. The anti-blowout through hole 111 is provided inside the anti-blowout screw 220, and the rear end of the anti-blowout through hole 111 is provided with an embedding groove 221; and

[0077] The anti-blowout steel pad 210 has a rear end pressed on the positioning block 113 at the bottom of the inclined hole 120 , and a front end of the anti-blowout steel pad 210 is connected to the sealing device 300 .

[0078] In one embodiment, the blowout preventer 200 is used to prevent the high-pressure gas, liquid or gas-liquid mixture from being sprayed out in the well. The blowout preventer 200 includes a blowout preventer screw 220 and a blowout preventer steel pad 210. The front end of the blowout preventer screw 220 extends outside the inclined hole 120. The blowout preventer screw 220 and the rear end are connected to the sealing device 300. A through blowout preventer screw hole is provided inside the blowout preventer screw 220. The cable can penetrate into the well through the through blowout preventer through hole 111. The rear end of the blowout preventer through hole 111 is provided with an embedding groove 221. The embedding groove 221 is located at the rear end of the blowout preventer through hole 111. It is easy to understand that the embedding groove 221 is located in the blowout preventer through groove close to the side of the sealing device 300.

[0079] In another embodiment, the rear end of the blowout-proof steel pad 210 is squeezed on the positioning block 113 at the bottom of the inclined hole 120, and the front end of the blowout-proof steel pad 210 is connected to the sealing device 300. It is easy to understand that the blowout-proof screw 220 is arranged at the head end of the inclined hole 120, the blowout-proof steel pad 210 is arranged at the end of the inclined hole 120, and the sealing device 300 is arranged between the blowout-proof screw 220 and the blowout-proof steel pad 210.

[0080] Among them, the material of the blowout-proof steel ring can be stainless steel, which has corrosion resistance and oxidation resistance and can be suitable for use in humid, corrosive or high-temperature environments, such as 304 stainless steel and 316 stainless steel; in another embodiment, the material of the blowout-proof steel pad 210 can also be carbon steel, which has higher strength and rigidity; in another embodiment, the material of the blowout-proof cylinder gasket can also be alloy material, which has higher strength and wear resistance.

[0081] The anti-blowout steel pad 210 can prevent the underground high-pressure gas, liquid or mixed gas from spraying out during logging operations. After passing through the sealing device 300, the anti-blowout screw 220 is installed at the front end of the inclined hole 120 to provide a double insurance effect for the device.

[0082] Embodiment 4

[0083] See also Figure 1 and Figure 2 In the embodiment of the utility model, the sealing device 300 includes:

[0084] The front end of the sealing pressing block 330 is provided with a shape similar to the embedding groove 221, and the rear end is provided with a conical through hole 111, and the upper end of the sealing pressing block 330 is embedded in the embedding groove 221; and

[0085] A sealing rubber block 320 installed at the rear end of the sealing pressing block 330, wherein the front end of the sealing rubber block 320 is connected to the sealing pressing block 330, and the rear end is connected to the sealing rubber pad 310 via a sealing ring; and

[0086] The sealing rubber pad 310 is squeezed between the sealing rubber block 320 and the anti-spray steel pad 210 .

[0087] In this embodiment, the sealing device 300 is used to seal the gap between the cable and the blowout preventer 200 to prevent the high-pressure gas, liquid or mixed gas from being brought out of the well through the cable. It is also used to seal the gap between the blowout preventer 200 and the inclined hole 120.

[0088] In one embodiment, the upper end of the sealing block 330 is embedded in the embedding groove 221. It is easy to understand that the sealing block 330 is provided with a shape similar to the embedding groove 221, and the sealing block 330 can be embedded in the embedding groove 221. At the same time, a tapered through hole 111 is provided at the rear end of the sealing block 330 to facilitate the installation of the sealing rubber block 320. The greater the pressure between the sealing block 330 and the sealing rubber block 320, the better the sealing effect therebetween.

[0089] The material of the sealing block 330 may be a rubber material, which has good elasticity and sealing performance, such as nitrile rubber, fluororubber, silicone rubber, etc. Specifically, in the present embodiment, the material of the sealing block 330 may also be a polymer material, which is usually made of a high molecular polymer material and has good chemical resistance and wear resistance, such as polytetrafluoroethylene (PTFE), polyimide, etc. In the present embodiment, the material of the sealing block 330 may be a metal material, and the metal sealing block 330 has high strength and high temperature resistance, such as aluminum, copper, stainless steel, etc. The above description of the material of the sealing block 330 is only exemplary and should not be construed as a limitation to the present invention. It can be understood that the material of the sealing block 330 may also be other materials that can play a sealing and anti-spraying role in addition to the above, such as a composite sealing block 330 (Composite SealingBlocks), and the material of the sealing block 330 can be selected according to actual conditions.

[0090] In another embodiment, the sealing block 320 is used to seal the cable. The connection method between the sealing block 320 and the sealing pressure block 330 can be an inlay connection. A part of the sealing block 320 is embedded in the sealing pressure block 330. The front end of the sealing block 320 is provided with a cone similar to the conical through hole 111. The sealing of the sealing block 320 and the sealing pressure block 330 can be achieved by squeezing the sealing block 320. A sealing ring is provided at the rear end of the sealing block 320, and a sealing pad 310 is provided at the rear end of the sealing ring. Specifically, in this embodiment, the material of the sealing block 320 can be plastic or a composite material.

[0091] In another embodiment, the sealing rubber pad 310 is squeezed between the sealing rubber block 320 and the anti-spray steel pad 210. Specifically, in this embodiment, the sealing rubber pad 310 can be one or more of circular flat washers (Flat Washers), gaskets (Gaskets), and O-rings (O-rings).

[0092] Based on the above structure, when the sealing device 300 is installed, the cable is first passed through the blowout prevention screw 220, and then through the sealing block 330 and the sealing rubber block 320 in sequence, and finally through the sealing rubber pad 310 and the blowout prevention steel pad 210. First, the blowout prevention steel pad 210 is installed in the inclined hole 120, and then the sealing rubber pad 310 is placed in the inclined hole 120, and the blowout prevention steel pad 210 placed on the positioning block 113 is squeezed, and then the sealing rubber block 320 is extended into the inclined hole 120. Finally, after the sealing block 330 is embedded in the blowout prevention screw 220, it is placed in the inclined hole 120 together with the blowout prevention screw 220, and the sealing device 300 and the blowout prevention device 200 are installed in the inclined hole 120.

[0093] By means of the sealing pressing block 330 and the sealing rubber pad 310, a seal can be formed between the sealing device 300 and the blowout prevention device 200, and the sealing function and the blowout prevention function can be distinguished, which is convenient for later maintenance. At the same time, a sealing rubber block 320 is provided to fix the cable in the inclined hole 120, and the sealing effect of the sealing device 300 is increased by squeezing the blowout prevention device 200. The structure is simple and reasonable, and the sealing effect is obvious.

[0094] Embodiment 5

[0095] See also Figure 3 In the embodiment of the utility model, a reserved groove 142 is provided in the middle of the cover plate 140, a groove 141 is provided on the inner side of the cover plate 140, and the reserved groove 142 penetrates the cover plate 140 and the groove 141; and

[0096] Countersunk screw holes 143 are provided on the cover plate 140 at both sides of the reserved groove 142 , and guide grooves 132 are provided on both sides of the groove 141 .

[0097] In this embodiment, a reserved groove 142 is provided in the middle of the cover plate 140, and the reserved groove 142 is used to observe and adjust the clamping force of the cable in the cable clamp 150. The shape of the reserved groove 142 can be a rectangular reserved groove 142 or a circular reserved groove 142; a groove 141 is provided on the inner side of the cover plate 140, and the groove 141 is used to fix the cable. The shape and size of the groove 141 can be adjusted according to the shape of the cable clamp 150, and the reserved groove 142 passes through the cover plate 140 and the groove 141.

[0098] In another embodiment, countersunk screw holes 143 are provided on the cover plate 140 on both sides of the reserved slot 142 , and guide slots 132 are provided on both sides of the groove 141 . The function of the guide slots 132 is to guide the cable to pass through the cable clamping plate 150 .

[0099] By providing a reserved groove 142 on the cover plate 140, the cable clamp 150 can be adjusted and observed in real time. When the cable clamp 150 needs to be adjusted, it can be adjusted through the reserved groove 142, which is very convenient. At the same time, a groove 141 is provided on the inner side of the cover plate 140 to facilitate the installation of the cable clamp 150, and guide grooves 132 are provided on both sides of the groove 141. When the cable passes through the cover plate 140 and the cable clamp 150, it can guide and protect the cable.

[0100] Embodiment 6

[0101] See also Figure 4 In the embodiment of the utility model, a groove 221 for embedding the sealing pressing block 330 is provided inside the anti-blowout screw 220 , and the shape of the groove 221 is adapted to the outer shape of the sealing pressing block 330 .

[0102] In the present embodiment, a groove 221 for embedding the sealing block 330 is provided inside the blowout-proof screw 220. The shape of the groove 221 matches the shape of the sealing block 330. Specifically, in the present embodiment, the groove 221 may be a rectangular groove 221, a circular groove 221, a V-shaped groove 221 or a U-shaped groove 221. In addition to the above shapes, there are many other special shapes of grooves 221, such as an L-shaped groove 221, an X-shaped groove 221, a Y-shaped groove 221, etc. The above specific description of the groove 221 is only exemplary. When the present invention is selected, it can be selected according to actual needs.

[0103] The blowout-proof screw 220 and the sealing pressing block 330 are fixedly connected by being embedded, and a portion of the sealing pressing block 330 is embedded in the blowout-proof screw 220, which not only makes the connection between the blowout-proof screw 220 and the sealing pressing block 330 tighter, but also increases the sealing between the blowout-proof screw 220 and the sealing pressing block 330.

[0104] Embodiment 7

[0105] See also Figure 5 In the embodiment of the utility model, a double-layer sealing rubber ring 331 is provided at the upper end of the sealing pressing block 330 , a single-layer sealing rubber ring 332 is provided at the lower end of the sealing pressing block 330 , and a conical sealing groove is provided inside the sealing pressing block 330 .

[0106] In this embodiment, a double-layer sealing rubber ring is provided at the upper end of the sealing block 330. When the sealing block 330 is connected to the blowout-proof screw 220, the sealing performance between the blowout-proof screw 220 and the sealing block 330 is increased. At the same time, a single-layer sealing rubber ring is provided at the lower end of the sealing block 330 to further increase the sealing performance at the edge of the blowout-proof screw 220 and the sealing block 330.

[0107] In another embodiment, a conical sealing groove is provided inside the sealing block 330. The shape of the sealing groove is complementary to the sealing rubber block 320, allowing the sealing rubber block 320 to enter the sealing groove. The conical sealing groove can also play a guiding role, guiding the sealing rubber block 320 to enter the sealing groove.

[0108] Embodiment 8

[0109] See also Figure 6 In the embodiment of the utility model, the front end of the sealing rubber block 320 is conical and can be embedded in the sealing groove of the sealing pressing block 330. The sealing rubber block 320 is provided with a through rubber block through hole 111, and the rubber block through hole 111 is provided with a plurality of annular buffer grooves 321.

[0110] In this embodiment, the front end of the sealing rubber block 320 is configured to be a cone that is complementary to the sealing groove, thereby increasing the sealing performance between the sealing rubber block 320 and the sealing groove. In another embodiment, a penetrating rubber block through hole 111 is provided inside the sealing rubber block 320, and a plurality of annular buffer grooves 321 are provided in the rubber block through hole 111. The function of the buffer grooves 321 is to remove impurities and dirt adhering to the cable, thereby ensuring the cleanliness of the cable surface and increasing the service life of the cable.

[0111] Embodiment 9

[0112] References Figure 7In this embodiment, the anti-blowout steel pad 210 is composed of two semicircular steel sheets, each of which has a semicircular through hole 111 in the middle, a connecting key 211 at the front end of the steel sheet, and a connecting hole 212 corresponding to the connecting key 211 at the rear end of the steel sheet.

[0113] In this embodiment, the anti-blowout steel pad 210 is composed of two semicircular steel sheets. The steel sheets are used in pairs. A semicircular through hole 111 is provided in the middle of each steel sheet, and a connecting key 211 is provided at the front end of each steel sheet, and a connecting hole 212 corresponding to the connecting key 211 is provided at the rear end of each steel sheet. The connecting key 211 and the connecting hole 212 are made by an integral molding process with the steel sheet.

[0114] Based on the above structure, the connecting key 211 of the first steel sheet is inserted into the connecting hole 212 of the other steel sheet, and the connecting key 211 of the other steel sheet is inserted into the connecting hole 212 of the first steel sheet. The two steel sheets can form a complete blowout-proof steel pad 210. The blowout-proof steel pad 210 is manufactured by adopting a combined method, which reduces the manufacturing difficulty and process, and can be manufactured and used on a large area.

[0115] Embodiment 10

[0116] Reference Figure 8 In this embodiment, the cable clamp plate 150 is composed of two clamp blocks 151. A cable groove runs through the middle of the clamp block 151. The two clamp blocks 151 are detachably connected, and the material of the clamp block 151 is copper.

[0117] In this embodiment, the cable clamp plate 150 is composed of two clamp blocks 151. A cable runs through the middle of the two clamp blocks 151. The two clamp blocks 151 are detachably connected, specifically by bolts. The clamp blocks 151 are made of copper.

[0118] Based on the above structure, when clamping the cable by the clamping block 151, first the two clamping blocks 151 are separated, the cable is placed between the two clamping blocks 151, and then the two clamping blocks 151 are combined, and the degree of cable clamping is controlled by adjusting the clamping force between the two clamping blocks 151.

[0119] The cable is clamped by the clamping block 151, and the clamping block 151 is made of copper, which can not only ensure the cable is clamped, but also protect the cable.

[0120] Embodiment 11

[0121] See also Figures 1 to 4 This embodiment provides a logging tool, including the novel bypass device 100 mentioned above.

[0122] In this embodiment, a logging instrument includes a bypass 100 and a logging cable connection. The torpedo serves as a cable connection joint. The downhole instrument cable and the ground power supply cable are connected to each other to complete the power supply and data transmission of the downhole test instrument. Various signals detected by the downhole test instrument can be transmitted back to the ground control terminal through the control terminal, thereby completing the logging work.

[0123] By arranging the blowout prevention device 200 and the sealing device 300 in the main body 110, the sealing performance is good, the docking is reliable, and the occurrence of emergency situations such as blowouts can be effectively dealt with; at the same time, the inclined hole 120 is arranged in the main body 110, which has a simple structure and is easy to use. The extra-large side inclined hole 120 allows the torpedo to pass directly, eliminating the need to re-make the torpedo head each time, thereby improving the construction progress and logging time efficiency and reducing the labor intensity of the operators.

[0124] In the description of this specification, the description with reference to the terms "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0125] In addition, the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel bypass device, comprising: The main body has a through hole in the middle, an inclined hole at one end of the main body, one end of the inclined hole is connected to the outside, and the other end is connected to the through hole, a platform is provided at the other end of the main body, a sink groove is provided in the middle of the platform, and threaded holes are provided on both sides of the sink groove, characterized in that: A cover plate mounted on the platform and detachably connected to the main body; and a cable cleat fixed between the cover plate and the platform and detachably connectable to the main body; and A blowout prevention device is embedded in the inclined hole, wherein a sealing device is clamped inside the blowout prevention device, and a cable runs through the blowout prevention device and the sealing device, one end of the cable runs into the well along with the drilling tool, and the other end passes through the cable clamp plate and is fixed on the main body; Blowout prevention devices include: Blowout proof screws; The front end of the blowout-proof screw extends out of the inclined hole, and the rear end is connected to the sealing device. A blowout-proof through hole is provided inside the blowout-proof screw, and a groove is provided at the rear end of the blowout-proof through hole; and Blowout-proof steel pad, the rear end of the blowout-proof steel pad is squeezed on the positioning block at the bottom of the inclined hole, and the front end of the blowout-proof steel pad is connected to the sealing device; The sealing device includes: The front end of the sealing block is provided with a shape similar to the embedding groove, and the rear end is provided with a conical through hole, and the upper end of the sealing block is embedded in the embedding groove; and A sealing rubber block installed at the rear end of the sealing pressing block, the front end of the sealing rubber block is connected to the sealing pressing block, and the rear end is connected to the sealing rubber pad through a sealing ring; and A sealing rubber pad is squeezed between the sealing rubber block and the anti-spray steel pad.

2. The novel bypass device according to claim 1 is characterized in that: The front end of the main body is provided with an external thread, the bottom of the inclined hole is provided with a positioning block, the middle of the transition edge between the inclined hole and the platform is provided with a transition groove, and the middle of the transition edge between the platform and the main body is provided with a guide groove.

3. The novel bypass device according to claim 1 is characterized in that: A reserved groove is provided in the middle of the cover plate, and a groove is provided on the inner side of the cover plate, and the reserved groove passes through the cover plate and passes through the groove; and Countersunk screw holes are arranged on the cover plates on both sides of the reserved groove, and guide grooves are arranged on both sides of the groove.

4. The novel bypass device according to claim 1 is characterized in that: The anti-blowout screw is provided with an embedding groove for embedding the sealing pressing block, and the shape of the embedding groove is adapted to the shape of the sealing pressing block.

5. The novel bypass device according to claim 1 is characterized in that: A double-layer sealing rubber ring is arranged at the upper end of the sealing pressing block, a single-layer sealing rubber ring is arranged at the lower end of the sealing pressing block, and a conical sealing groove is arranged inside the sealing pressing block.

6. The novel bypass device according to claim 1 is characterized in that: The front end of the sealing rubber block is conical and can be embedded in the sealing groove of the sealing pressing block. A through-hole is provided inside the sealing rubber block, and a plurality of annular buffer grooves are provided in the through-hole.

7. The novel bypass device according to claim 1, characterized in that: The anti-spray steel pad is composed of two semicircular steel sheets, each of which has a semicircular through hole in the middle, a connecting key at the front end of the steel sheet, and a connecting hole corresponding to the connecting key at the rear end of the steel sheet.

8. The novel bypass device according to claim 1 is characterized in that: The cable clamp plate is composed of two clamp blocks, a cable groove runs through the middle of the clamp block, the two clamp blocks are detachably connected, and the material of the clamp blocks is copper.

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