A drilling pipe fixing device for oil extraction

Abstract

This invention relates to the field of oil extraction technology and discloses an oil extraction drill pipe fixing device, including a support base. A limiting block is fixedly connected to the side wall of the support base. During the placement of the slips, the slider is subjected to the squeezing force from the support base, and the slip slides relative to the support base. After sliding along the inclined surface, the horizontal straight distance between the bottom of the slider and the limiting block becomes shorter, and the limiting block can just hold the bottom of the slider. After placement, the limiting rod is pushed to slide into the limiting groove, so that the limiting can be performed at the same time as the slip is installed. When it is removed after use, the operation can be reversed. This avoids the slip being subjected to a large upward impact force that would quickly push the slip out of the wellhead when the well pressure is too high or during a blowout, thus reducing the response time and improving the slip's blowout prevention capability and extending the response time.

Description

Technical Field

[0001] This invention relates to the field of oil extraction equipment technology, specifically to an oil extraction drill pipe fixing device. Background Technology

[0002] With the rapid development of people's lives, oil extraction has become increasingly important. Drill pipes are indispensable in the oil extraction process, as they are used to drill into the ground with drill bits, making it easier for workers to extract underground oil.

[0003] However, during the use of the equipment, when the pressure inside the oil well suddenly becomes too high or a blowout occurs, the manual slips are subjected to a large upward impact force. Because the manual slips themselves have weak resistance to impact and weak blowout prevention capabilities, the high-pressure fluid flowing inside the well will quickly push the manual slips out of the wellhead, leaving people with very little time to react. In response to the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an oil drilling pipe fixing device, including a support base, a limit block fixedly connected to the side wall of the support base, and further comprising:

[0005] The fixing mechanism has installation space on its side wall;

[0006] The limiting mechanism is installed on the side wall of the fixed mechanism;

[0007] The limiting block is used to restrict the sliding of the slider within the limiting mechanism;

[0008] Auxiliary mechanism, which is installed on the side wall of the fixed mechanism;

[0009] The auxiliary mechanism is used to fix the drill bit.

[0010] Preferably, the fixing mechanism includes:

[0011] The clamping assembly is slidably connected to the side wall of the support base via a blocking element;

[0012] The obstruction includes several locking pieces that are slidably connected to the inner wall of the support base;

[0013] Preferably, the limiting mechanism includes:

[0014] The limiting component is slidably connected to the side wall of the clamping component via a slider;

[0015] The sliding component includes a groove formed on the side wall of the slip plate;

[0016] The self-locking assembly is fixedly connected to the side wall of the clamping assembly via a fastener;

[0017] The fastener consists of two housings that are fixedly connected to the sidewalls of the slip plate.

[0018] Preferably, the auxiliary mechanism includes:

[0019] Leak-proof component, which is slidably connected to the side wall of the slip plate via a clamping element;

[0020] The clamping component includes several mounting slots formed on the side wall of the clamping plate; each mounting slot has a slidably connected locking tooth.

[0021] Preferably, the support assembly includes a drill rod disposed on the sidewall of the slip, the sidewall of the drill rod being slidably connected to the sidewall of the slip tooth.

[0022] Preferably, the limiting component includes a slider one slidably connected to one side wall of the slide groove, a slide groove two is provided on the side wall of the slider one, and a limiting rod is slidably connected to the side wall of the slide groove two.

[0023] Preferably, the limiting component further includes a limiting groove formed on the side wall of the slip, and the side wall of the limiting rod is slidably connected to the side wall of the limiting groove.

[0024] Preferably, the self-locking component includes a limiting shaft fixedly connected to the inner wall of the housing, and hooks are rotatably connected to the side walls of the limiting shaft, with the side walls of the hooks slidably connected to the inner wall of the housing.

[0025] Preferably, the self-locking assembly further includes a limiting block three rotatably connected to the inner wall of the housing, with one end of the limiting block three away from the hook extending to the outside of the housing, and the side wall of the limiting block three slidably connected to the side wall of the hook.

[0026] The leak-proof component includes a leak-proof groove provided on the side wall of the tooth, and a flow guide groove is provided on the side wall of the tooth.

[0027] Preferably, the leak-proof component also includes several guide plates fixedly connected to the inner wall of the guide channel, and the guide plates are all made of high-strength metal.

[0028] The present invention has the following beneficial effects:

[0029] (1) During the placement of the slips, the slider is subjected to the squeezing force from the support base. The slips slide relative to the support base. After sliding along the inclined plane, the horizontal straight distance between the bottom of the slider and the limiting block becomes shorter. The limiting block can just hold the bottom of the slider. After placement, the limiting rod is pushed to slide into the limiting groove, so that the limiting can be performed at the same time as the slips are installed. When the slips are removed after use, the operation can be reversed. This avoids the slips being subjected to a large upward impact force when the pressure in the well is too high or when the well blows out, which will quickly push the slips out of the wellhead. The response time is shorter, which improves the slips' ability to prevent blowout and extends the response time.

[0030] (2) When the slip device is placed, the slip will retract. When the slip is fully retracted, the two hooks will squeeze each other. Under the action of mutual squeezing force, the hooks will rotate around the limiting shaft. During rotation, the limiting block will slide relative to the hook. When it slides to a certain extent, it will fall down and lock the hook, thus achieving self-locking. This avoids the connection between the slips from loosening under the action of impact force, and the slips may also have an upward sliding tendency, which would lead to insufficient clamping force between the slips and the drill rod, resulting in reduced static friction between the two and inability to effectively clamp the drill rod, causing it to slide.

[0031] (3) When mud, gravel, and other materials impact upwards in the well, the clamping teeth and drill pipe are in a clamped state. The teeth are close to the drill pipe sidewall, which initially prevents mud penetration and gravel impact on the teeth located inside, causing the teeth to wear too quickly. The mud and gravel will be discharged outwards along the guide channel to release the pressure of the high-pressure liquid in the well, so that the pressure can be released. The anti-leakage groove will further hinder the decompression of water and mud seeping in from the gap, reduce the penetration capacity of water and mud, avoid the impact of gravel and mud on the teeth, which greatly reduces the service life of the teeth, and to a certain extent, release the impact force of the high-pressure liquid.

[0032] (4) After long-term use, the teeth of the device of the present invention will be severely worn due to various reasons and cannot be used. At this time, the tooth can be pulled out from the mounting slot and then a new tooth can be installed into the mounting slot to complete the replacement of the tooth. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a partial cross-sectional view of the limiting component of the present invention;

[0035] Figure 2 This is a partial structural diagram of the present invention;

[0036] Figure 3 For the present invention Figure 1 Enlarged structural diagram of A in the middle;

[0037] Figure 4 This is a schematic diagram of the overall structure of the present invention;

[0038] Figure 5 This is a schematic diagram of the overall structure of the self-locking component of the present invention;

[0039] Figure 6 For the present invention Figure 5 Enlarged structural diagram of B in the middle;

[0040] Figure 7 This is a partial cross-sectional view of the present invention;

[0041] Figure 8 This is a partial structural diagram of the auxiliary component of the present invention;

[0042] Figure 9 For the present invention Figure 8 Enlarged schematic diagram of the structure of C;

[0043] Figure 10 Schematic diagram of the auxiliary component structure of this invention;

[0044] Figure 11 A partial structural diagram of the limiting component of this invention.

[0045] The attached diagram lists the components represented by each number as follows:

[0046] In the diagram: 1. Fixing mechanism; 11. Support assembly; 12. Clamping assembly; 111. Support base; 112. Limiting block one; 113. Drill rod; 121. Slip plate; 2. Limiting mechanism; 21. Limiting assembly; 22. Self-locking assembly; 211. Slide groove one; 212. Slider one; 213. Slide groove two; 214. Limiting rod; 215. Limiting groove; 221. Outer shell; 222. Limiting shaft; 223. Hook; 224. Limiting block three; 3. Auxiliary mechanism; 31. Leak-proof assembly; 311. Mounting groove; 312. Clamping teeth; 313. Leak-proof groove; 314. Guide groove; 315. Guide plate. Detailed Implementation

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

[0048] Example 1, please refer to Figure 1 - Figure 3 The present invention is an oil drilling pipe fixing device, including a support base 111, a limit block 112 fixedly connected to the side wall of the support base 111, and further comprising:

[0049] Fixing mechanism 1, the side wall of fixing mechanism 1 has installation space;

[0050] Limiting mechanism 2 is installed on the side wall of fixing mechanism 1;

[0051] The limiting block 112 is used to restrict the sliding of the slider 212 inside the limiting mechanism 2;

[0052] Auxiliary mechanism 3 is installed on the side wall of fixed mechanism 1;

[0053] Auxiliary mechanism 3 is used to fix the drilling tool;

[0054] Fixed mechanism 1 includes:

[0055] The clamping assembly 12 is slidably connected to the side wall of the support base 111 via a blocking member;

[0056] The obstruction includes several locking pieces 121 that are slidably connected to the inner wall of the support base 111;

[0057] Limiting mechanism 2 includes:

[0058] Limiting component 21 is slidably connected to the side wall of clamping component 12 via a sliding member;

[0059] The sliding element includes a groove 211 formed on the side wall of the slip plate 121;

[0060] Self-locking component 22 is fixedly connected to the side wall of clamping component 12 by a fastener;

[0061] The fastener includes two housings 221 that are fixedly connected to the side wall of the slip plate 121.

[0062] Auxiliary mechanism 3 includes:

[0063] Leak-proof component 31, which is slidably connected to the side wall of the slip plate 121 via a clamping member;

[0064] The clamping component includes several mounting grooves 311 formed on the side wall of the clamping plate 121; each mounting groove 311 has a slidably connected locking tooth 312 on its side wall.

[0065] Example 2, please refer to Figure 3 - Figure 11 The present invention is an oil drilling pipe fixing device. Based on the first embodiment, the support assembly 11 includes a drill pipe 113 disposed on the side wall of the slip 121, and the side wall of the drill pipe 113 is slidably connected to the side wall of the tooth 312.

[0066] The limiting component 21 includes a slider 212 that is slidably connected to the side wall of the first slide groove 211. The side wall of the slider 212 is provided with a second slide groove 213, and a limiting rod 214 is slidably connected to the side wall of the second slide groove 213.

[0067] First, the slips are placed inside the well using a slips pick-and-place device. During the placement process, slider 212, under its own weight, initially positions itself at the bottom of groove 211. Slider 212 moves downwards along with slip 121, and its bottom just moves below limit block 112 before contacting support base 111. When slider 212 begins to contact support base 111, it experiences a compressive force from the support base 111, causing slip 121 to slide relative to support base 111. 12 will slide upward along the inner wall of the slide groove 211. After sliding along the inclined plane, the horizontal straight distance between the bottom of the slider 212 and the limiting block 112 will become shorter. The limiting block 112 can just hold the bottom of the slider 212. After placement, push the limiting rod 214 to slide into the limiting groove 215, so that the slip is automatically limited after installation. When it is removed after use, the operation can be reversed. This avoids the slip being subjected to a large upward impact force when the pressure in the well is too high or when there is a blowout, which will quickly push the slip out of the wellhead. The response time is shorter, which improves the slip's blowout prevention capability and extends the response time.

[0068] The self-locking assembly 22 also includes a limiting block 3 224 rotatably connected to the inner wall of the housing 221. The end of the limiting block 3 224 away from the hook 223 extends to the outside of the housing 221, and the side wall of the limiting block 3 224 is slidably connected to the side wall of the hook 223. When the well pressure is high or a blowout occurs, the drill pipe 113 and the slips are subjected to a large upward impact, requiring greater friction to restrict the movement of the drill pipe. As the slip device is placed, the slips 121 will retract, the distance between the slips 121 will gradually shorten, and the friction between them and the drill pipe 113 will gradually increase. When the slips are fully retracted, the two hooks 223 will squeeze against each other. Under the action of mutual squeezing force, the hooks 223 will rotate around the limiting shaft 222. During rotation, the limiting block 224 will slide relative to the hooks 223. When the sliding reaches a certain extent, it will fall downward and lock the hooks 223, achieving self-locking. This avoids the connection between the slips 121 from loosening under the impact force, and also prevents the slips from having an upward sliding tendency, which would lead to insufficient clamping force between the slips and the drill pipe, reducing the static friction between them, and making it impossible to effectively clamp the drill pipe and cause it to slide.

[0069] The leak-proof component 31 includes a leak-proof groove 313 provided on the side wall of the tooth 312, and a flow guide groove 314 is provided on the side wall of the tooth 312.

[0070] The leak-proof component 31 also includes several guide plates 315 fixedly connected to the inner wall of the guide channel 314, and the guide plates 315 are all made of high-strength metal.

[0071] When mud, gravel, and other materials impact upwards in the well, the clamping teeth 312 and drill pipe 113 are tightly fitted together. The teeth adhere closely to the sidewall of drill pipe 113, initially preventing mud penetration and excessive wear of the teeth caused by gravel impacting the inner teeth. Mud and gravel are discharged outwards along the guide groove 314, relieving pressure on both sides and concentrating pressure in the middle of the clamping teeth 312. The anti-leakage groove 313 further impedes the pressure reduction of water and mud seeping in from the gaps, reducing the penetration capacity of water and mud and preventing gravel and mud from impacting the teeth, which would significantly reduce the service life of the teeth.

[0072] After prolonged use, the teeth of the device may become severely worn due to various reasons and become unusable. In this case, simply pull the retaining tooth 312 out of the mounting slot 311 and then install a new retaining tooth 312 into the mounting slot 311 to complete the replacement of the retaining tooth.

[0073] A specific application of this embodiment is as follows: First, the slips are placed inside the well using a slips picker. During the slip placement process, the slider 212, under its own weight, initially positions itself at the bottom of the groove 211. The slider 212 moves downwards along with the slip 121, and before the slider 212 contacts the support base 111, its bottom just moves below the limiting block 112. When the slider 212 begins to contact the support base 111, it experiences a compressive force from the support base 111. The slip 121 and the support base 111 then... When sliding, slider 212 will slide upward along the inner wall of groove 211. After sliding along the inclined plane, the horizontal straight distance between the bottom of slider 212 and limit block 112 will become shorter. Limit block 112 can just hold the bottom of slider 212. After placement, push limit rod 214 to slide into limit groove 215, so that the slip is limited at the same time as installation. When it is not in use, it can be removed by reversing the operation. This avoids the slip being subjected to a large upward impact force when the well pressure is too high or when there is a blowout, which will quickly push the slip out of the wellhead. The response time is shorter, which improves the slip's blowout prevention capability and extends the response time.

[0074] When the well pressure is high or a blowout occurs, the drill pipe 113 and the slips are subjected to a large upward impact, requiring greater friction to restrict the movement of the drill pipe. As the slip device is placed, the slips 121 will retract, the distance between the slips 121 will gradually shorten, and the friction between them and the drill pipe 113 will gradually increase. When the slips are fully retracted, the two hooks 223 will squeeze against each other. Under the action of mutual squeezing force, the hooks 223 will rotate around the limiting shaft 222. During rotation, the limiting block 224 will slide relative to the hooks 223. When the sliding reaches a certain extent, it will fall downward and lock the hooks 223, achieving self-locking. This avoids the connection between the slips 121 from loosening under the impact force, and also prevents the slips from having an upward sliding tendency, which would lead to insufficient clamping force between the slips and the drill pipe, reducing the static friction between them, and making it impossible to effectively clamp the drill pipe and cause it to slide.

[0075] When mud, gravel, and other materials impact upwards in the well, the clamping teeth 312 and drill pipe 113 are in a clamped state. The teeth are tightly attached to the side wall of drill pipe 113, which initially prevents mud penetration and gravel impact on the teeth located inside, avoiding excessive wear of the teeth. The mud and gravel will be discharged outwards along the guide groove 314, relieving the pressure of the high-pressure liquid in the well, allowing the pressure to be released. The anti-leakage groove 313 further hinders the decompression of water and mud seeping in from the gaps, reducing the penetration capacity of water and mud, preventing gravel and mud from impacting the teeth and greatly reducing the service life of the teeth, and to a certain extent relieving the impact force of the high-pressure liquid.

[0076] After prolonged use, the teeth may become severely worn due to various reasons and become unusable. In this case, simply pull the retaining tooth 312 out of the mounting slot 311 and then install a new retaining tooth 312 into the mounting slot 311 to complete the quick replacement of the retaining tooth.

[0077] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A drill pipe fixing device for oil extraction, comprising a support base (111), wherein a limiting block (112) is fixedly connected to the side wall of the support base (111), characterized in that, Also includes: A fixing mechanism (1) has an installation space on its side wall; Limiting mechanism (2), the limiting mechanism (2) is installed on the side wall of the fixing mechanism (1); The limiting block 1 (112) is used to restrict the sliding of the slider 1 (212) inside the limiting mechanism (2); Auxiliary mechanism (3) is installed on the side wall of the fixed mechanism (1); The auxiliary mechanism (3) is used to fix the drilling tool; The fixing mechanism (1) includes: The clamping assembly (12) is slidably connected to the side wall of the support base (111) via a barrier; The obstruction includes several latches (121) that are slidably connected to the inner wall of the support base (111). The limiting mechanism (2) includes: Limiting component (21), the limiting component (21) is slidably connected to the side wall of clamping component (12) via a slider; The sliding element includes a groove (211) formed on the side wall of the slip (121); The self-locking assembly (22) is fixedly connected to the side wall of the clamping assembly (12) by means of a fastener; The fastener includes two outer shells (221) that are fixedly connected to the side wall of the slip (121); The limiting component (21) includes a slider (212) slidably connected to the side wall of the first slide groove (211), a second slide groove (213) is provided on the side wall of the slider (212), and a limiting rod (214) is slidably connected to the side wall of the second slide groove (213). The limiting component (21) also includes a limiting groove (215) formed on the side wall of the slip plate (121), and the side wall of the limiting rod (214) is slidably connected to the side wall of the limiting groove (215).

2. The oil drilling pipe fixing device according to claim 1, characterized in that: The auxiliary mechanism (3) includes: Leak-proof component (31), which is slidably connected to the side wall of the slip plate (121) via a clamping member; The clamping member includes a plurality of mounting grooves (311) formed on the side wall of the clamping plate (121); each mounting groove (311) is slidably connected with a clamping tooth (312).

3. The oil drilling pipe fixing device according to claim 2, characterized in that: The self-locking assembly (22) further includes a limiting block three (224) rotatably connected to the inner wall of the housing (221), with one end of the limiting block three (224) away from the hook (223) extending to the outside of the housing (221), and the side wall of the limiting block three (224) slidably connected to the side wall of the hook (223).

4. The oil drilling pipe fixing device according to claim 3, characterized in that: The leak-proof component (31) includes a leak-proof groove (313) provided on the side wall of the tooth (312), and a flow guide groove (314) is provided on the side wall of the tooth (312).

5. The oil drilling pipe fixing device according to claim 4, characterized in that: The leak-proof component (31) also includes several guide plates (315) fixedly connected to the inner wall of the guide channel (314), and the guide plates (315) are all made of high-strength metal.

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