A drilling and production apparatus

Abstract

The present application belongs to the field of drilling technology, and discloses a drilling and mining device, which comprises a shell, a connecting piece, a water inlet device, a drill bit and a sliding piece. The sliding shell is slidingly arranged in the waterproof shell. The connecting piece is arranged on the upper end opening of the sliding shell and is provided with a first liquid inlet channel. The water inlet device is located in the sliding shell and is provided with a second liquid inlet channel. The drill bit is arranged at the lower end of the sliding shell and slidingly penetrates the lower end opening of the waterproof shell. The drill bit is provided with a liquid outlet channel, and the drill bit, the water inlet device and the inner wall of the sliding shell surround a containing chamber. The sliding piece is slidingly arranged in the containing chamber. The cooling liquid flows through the first liquid inlet channel and the second liquid inlet channel into the containing chamber and is then discharged through the liquid outlet channel to forcibly cool the drill bit and timely take away the heat generated by the drill bit, so as to inhibit the decomposition of natural gas hydrate and ensure the safety and efficiency of the mining operation. The device can reduce the amount of inhibitor, reduce the dependence on high-concentration chemical inhibitors, and is environmentally friendly and economical.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and more particularly to a drilling and production apparatus. Background Technology

[0002] Natural gas hydrates are ice-like cage-like compounds formed from natural gas and water under low temperature and high pressure conditions, and are widely distributed in deep-sea sedimentary layers and permafrost zones. Drilling is a core component in the extraction of natural gas hydrates, and the drill bit, as a key component of the drilling system that directly contacts the reservoir, directly affects drilling and extraction efficiency.

[0003] Currently, during the extraction of natural gas hydrates, the existing drill bits generate a large amount of frictional heat when mechanically breaking rocks. Under the action of frictional heat, the hydrates around the well wall are prone to uncontrolled decomposition. After the natural gas hydrates absorb heat and decompose, the mechanical stability of the well wall will be weakened, leading to well wall collapse, well diameter enlargement, and even interruption of drilling operations, which cannot meet the requirements for safe and efficient extraction of natural gas hydrates. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling and production device that can effectively suppress the decomposition of natural gas hydrates and achieve efficient and safe mining operations.

[0005] To achieve this objective, the present invention adopts the following technical solution: A drilling and production apparatus, comprising: The housing includes a waterproof outer shell and a sliding outer shell, wherein the sliding outer shell is slidably disposed within the waterproof outer shell; A connector is provided at the upper opening of the sliding housing, and the connector has a first liquid inlet channel; A water inlet is spaced apart from the connector and located inside the sliding housing. The water inlet has a second liquid inlet channel. The water inlet has an open state in which the second liquid inlet channel is connected to the first liquid inlet channel and a closed state in which the second liquid inlet channel is not connected to the first liquid inlet channel. The drill bit is detachably mounted on the lower end of the sliding housing and slides through the lower opening of the waterproof housing; the drill bit has a liquid outlet channel; the drill bit, the water inlet, and the inner wall of the sliding housing form a receiving chamber. A sliding member is slidably disposed in the receiving cavity along the axial direction of the sliding housing, and is used to hammer the drill bit; The coolant flows through the first inlet channel and the second inlet channel into the receiving chamber, and then is discharged through the outlet channel.

[0006] As an alternative to the drilling and production equipment, it also includes a ball head and a first elastic element; The water inlet is provided with an installation groove, and the ball head is provided at the opening of the installation groove and directly opposite the first liquid inlet channel; the first elastic element is provided in the installation groove and connected between the ball head and the bottom of the installation groove. In the open state, the ball head does not block the first liquid inlet channel; in the closed state, the ball head blocks the first liquid inlet channel.

[0007] As an optional solution for drilling and production equipment, the temperature of the coolant is 4℃~10℃.

[0008] As an optional solution for the drilling and production device, the water inlet is provided with a first guide protrusion at one end facing the receiving chamber. The first guide protrusion extends along the axial direction of the sliding outer shell, and the sliding member is provided with a first guide groove, into which the first guide protrusion can extend.

[0009] As an optional solution for the drilling and production device, the drill bit is provided with a second guide protrusion at one end facing the receiving chamber. The second guide protrusion extends along the axial direction of the sliding housing. The sliding member is provided with a second guide groove, and the second guide protrusion can extend into the second guide groove. The second guide protrusion has a liquid inlet hole, which is connected to the liquid outlet channel.

[0010] As an optional solution for the drilling and production device, the housing further includes a second elastic element, the outer wall of the sliding outer shell is provided with a first abutting part, the inner wall of the waterproof outer shell is provided with a second abutting part, and the second elastic element is connected between the first abutting part and the second abutting part.

[0011] As an optional solution for drilling and production equipment, the lower end face of the drill bit is provided with multiple dome protrusions.

[0012] As an optional solution for drilling and production equipment, the outer peripheral wall of the drill bit is provided with multiple petal-shaped protrusions at intervals, and the sidewall of each petal-shaped protrusion is provided with multiple columnar protrusions at intervals.

[0013] As an optional solution for the drilling and production device, a liquid outlet hole is provided between two adjacent petal-shaped protrusions, and the liquid outlet hole is connected to the liquid outlet channel.

[0014] As an optional solution for the drilling and production device, the outer peripheral wall of the sliding member is provided with a protrusion, the diameter of which is smaller than the inner diameter of the sliding housing.

[0015] The beneficial effects of this invention are: This invention provides a drilling and extraction device, including a housing, a connector, a water inlet, a drill bit, and a sliding component. The housing includes a waterproof outer shell and a sliding outer shell, with the sliding outer shell slidably disposed within the waterproof outer shell. The connector is disposed at the upper opening of the sliding outer shell and has a first liquid inlet channel. The water inlet is spaced apart from the connector and located within the sliding outer shell. The water inlet has a second liquid inlet channel, and has an open state where the second liquid inlet channel communicates with the first liquid inlet channel and a closed state where the second liquid inlet channel is not communicated with the first liquid inlet channel. The drill bit is detachably disposed at the lower end of the sliding outer shell and slidably passes through the lower opening of the waterproof outer shell. The drill bit has a liquid outlet channel, and the drill bit, the water inlet, and the inner wall of the sliding outer shell enclose a receiving chamber. The sliding component is slidably disposed within the receiving chamber along the axial direction of the sliding outer shell and is used to hammer the drill bit. The coolant flows through the first and second inlet channels into the containment chamber, and then exits through the outlet channel, forcibly cooling the drill bit and promptly removing the heat generated by the drill bit. This inhibits the decomposition of natural gas hydrates, ensuring safe and efficient extraction operations. Furthermore, this device reduces the amount of inhibitors used, lowering reliance on high-concentration chemical inhibitors and thus reducing the risk of marine environmental pollution, making it both environmentally friendly and economical. Attached Figure Description

[0016] Figure 1 This is an isometric view of the drilling and production apparatus provided in the specific embodiments of the present invention; Figure 2 This is a cross-sectional view of the drilling and production apparatus provided in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of coolant flow provided in a specific embodiment of the present invention; Figure 4 This is an isometric view of the drill bit provided in a specific embodiment of the present invention.

[0017] In the picture: 1. Housing; 11. Waterproof outer shell; 111. Second abutment part; 12. Sliding outer shell; 120. Receiving chamber; 121. First abutment part; 2. Connecting parts; 21. First liquid inlet channel; 3. Water inlet; 31. Second liquid inlet channel; 32. Mounting groove; 33. First guide protrusion; 4. Drill bit; 41. Liquid outlet channel; 42. Second guide protrusion; 421. Liquid inlet hole; 43. Dome protrusion; 44. Lobe-shaped protrusion; 441. Columnar protrusion; 45. Liquid outlet hole; 5. Sliding component; 51. First guide groove; 52. Second guide groove; 53. Protrusion; 6. Ball head. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] This invention provides a drilling and extraction device that can effectively suppress the decomposition of natural gas hydrates during the drilling and extraction process, thereby achieving efficient and safe extraction operations.

[0023] like Figures 1 to 4As shown, the drilling and extraction device includes a housing 1, a connector 2, a water inlet 3, a drill bit 4, and a sliding member 5. The housing 1 includes a waterproof outer shell 11 and a sliding outer shell 12, with the sliding outer shell 12 slidably disposed within the waterproof outer shell 11. The connector 2 is disposed at the upper opening of the sliding outer shell 12 and has a first liquid inlet channel 21. The water inlet 3 is spaced apart from the connector 2 and located within the sliding outer shell 12. The water inlet 3 has a second liquid inlet channel 31, and has an open state where the second liquid inlet channel 31 communicates with the first liquid inlet channel 21, and a closed state where the second liquid inlet channel 31 is not communicated with the first liquid inlet channel 21. The drill bit 4 is detachably disposed at the lower end of the sliding outer shell 12 and slidably passes through the lower opening of the waterproof outer shell 11. The drill bit 4 has a liquid outlet channel 41, and the drill bit 4, the water inlet 3, and the inner wall of the sliding outer shell 12 enclose a receiving chamber 120. The sliding member 5 is slidably disposed within the receiving chamber 120 along the axial direction of the sliding outer shell 12, and is used to hammer the drill bit 4. Coolant flows through the first inlet channel 21 and the second inlet channel 31 into the receiving chamber 120, and then exits through the outlet channel 41, thereby forcibly cooling the drill bit 4 and promptly removing the heat generated by the drill bit 4, thus inhibiting the decomposition of natural gas hydrates and ensuring the safe and efficient operation of the extraction process. Furthermore, this device can reduce the amount of inhibitor used, lowering the dependence on high-concentration chemical inhibitors, thereby reducing the risk of pollution to the marine environment, making it both environmentally friendly and economical.

[0024] Understandably, once the hydrate reservoir is reached, the rotation speed of the drilling rig can be reduced to decrease heat and prevent hydrate decomposition. Furthermore, the aforementioned coolant not only cools the drill bit 4 but also acts as a drilling fluid, carrying and suspending rock cuttings and promptly removing broken rock fragments.

[0025] Specifically, initially, the sliding member 5 is positioned at the bottom of the receiving chamber 120 under the influence of gravity. When coolant enters the receiving chamber 120 through the first inlet channel 21 and the second inlet channel 31, it drives the sliding member 5 to slide upwards to the top of the receiving chamber 120. When the sliding member 5 reaches the top of the receiving chamber 120, the coolant in the receiving chamber 120 can enter the outlet channel 41 of the drill bit 4 and flow out from the drill bit 4. Under the influence of gravity and hydraulic pressure, the sliding member 5, positioned at the top of the receiving chamber 120, slides towards the drill bit 4, impacting it. After impacting, the sliding member 5 returns to the bottom of the fixed chamber, blocking the connection between the receiving chamber 120 and the outlet channel 41. The coolant injected into the receiving chamber 120 can again drive the sliding member 5 to slide upwards to the top of the receiving chamber 120. This process repeats, allowing the sliding member 5 to continuously impact the drill bit 4, thus achieving rock-breaking drilling.

[0026] In addition, when drilling into soft strata, the amount of coolant can be reduced, and drilling can be achieved solely through the high-speed rotation of the drilling and extraction device; when encountering hard rocks, the amount of coolant can be increased, and the pressure of the coolant can be used to drive the sliding member 5 to repeatedly hammer the drill bit 4, thereby improving drilling efficiency by vibrating and breaking the rock.

[0027] Optionally, the coolant temperature is 4℃~10℃. Under drilling friction and influenced by formation heat, the operating temperature of drill bit 4 is typically in the tens of degrees Celsius. The circulating coolant at 4℃~10℃ can remove heat from drill bit 4, achieving forced cooling. Simultaneously, it can forcibly cool the high-temperature area at the bottom of the well, reducing frictional heat generation and preventing natural gas hydrates from decomposing into gas and water during drilling, thereby avoiding the risk of blowouts and wellbore instability caused by gas expansion.

[0028] Optionally, the housing 1 further includes a second elastic element (not shown in the figure). The outer wall of the sliding housing 12 is provided with a first abutment portion 121, and the inner wall of the waterproof housing 11 is provided with a second abutment portion 111. The second elastic element connects the first abutment portion 121 and the second abutment portion 111. Since the elastic element can repeatedly hammer the drill bit 4, which is detachably mounted at the lower end of the sliding housing 12, the vibration of the drill bit 4 during hammering and rock cutting will cause the sliding housing 12 to vibrate. The second elastic element, located between the waterproof housing 11 and the sliding housing 12, can flexibly isolate the sliding housing 12 from the waterproof housing 11, preventing the violent vibration of the sliding housing 12 from being transmitted to the waterproof housing 11, thus reducing noise and protecting the waterproof housing 11.

[0029] Specifically, in this embodiment, both the first abutting portion 121 and the second abutting portion 111 are annular. The second elastic member is sleeved on the outside of the sliding housing 12 and abuts against the first abutting portion 121 and the second abutting portion 111. In other embodiments, the first abutting portion 121 may include a plurality of first support blocks spaced apart circumferentially along the sliding housing 12, and the second abutting portion 111 may include a plurality of second support blocks spaced apart circumferentially along the waterproof housing 11. The first support blocks and the second support blocks correspond one-to-one. Correspondingly, a plurality of second elastic members are provided, and the second elastic members abut against the corresponding first support block and second support block.

[0030] For example, in this embodiment, the second elastic element is a spring. Springs have good elasticity and are easy to obtain, thus having good economic efficiency.

[0031] Optionally, the drilling and production device also includes a ball head 6 and a first elastic element (not shown in the figure). The water inlet 3 is provided with an installation groove 32, and the ball head 6 is disposed at the opening of the installation groove 32, directly facing the first liquid inlet channel 21. The first elastic element is disposed in the installation groove 32 and connected between the ball head 6 and the bottom of the installation groove 32. In the open state, the ball head 6 does not block the first liquid inlet channel 21; in the closed state, the ball head 6 blocks the first liquid inlet channel 21. When the coolant volume is large and the coolant pressure exceeds the elastic force of the first elastic element, the ball head 6 is pushed open to the open state, separating from the first inlet channel 21. This allows the coolant to flow through the first inlet channel 21 to the second inlet channel 31, facilitating repeated hammering of the drill bit 4 by the sliding element 5 and improving drilling efficiency. When the coolant volume is small and the coolant pressure is less than the elastic force of the first elastic element, the ball head 6 blocks the first inlet channel 21, preventing coolant flow. Rapid drilling into soft formations can then be achieved solely through the high-speed rotation of the drilling device. In other words, by adjusting the coolant flow rate, the state of the water inlet 3 can be switched, making the drilling device suitable for different formation conditions, and operation is simple and convenient.

[0032] Specifically, in this embodiment, the ball head 6 is provided with a plug-in portion, which is inserted into the mounting groove 32 to facilitate the installation of the ball head 6. Simultaneously, when the ball head 6 moves under the elastic force of the first elastic member, the sliding fit between the plug-in portion and the mounting groove 32 can improve the accuracy of the ball head 6's movement direction and prevent the ball head 6 from deviating. Furthermore, the plug-in portion has a receiving groove, with one end of the first elastic member connected to the inner wall of the receiving groove and the other end connected to the bottom wall of the mounting groove 32. The receiving groove provides a certain guiding function for the extension and retraction of the first elastic member.

[0033] For example, the first elastic element is a spring, which is easy to source and has good economic benefits.

[0034] Optionally, the end of the water inlet 3 facing the receiving chamber 120 is provided with a first guide protrusion 33. The first guide protrusion 33 extends along the axial direction of the sliding housing 12. The sliding member 5 is provided with a first guide groove 51. The first guide protrusion 33 can extend into the first guide groove 51 to provide guidance for the sliding of the sliding member 5. At the same time, it can limit the sliding member 5 in the circumferential direction to prevent the sliding member 5 from moving radially along the receiving chamber 120.

[0035] It should be noted that when the slider 5 slides down to the bottom of the receiving chamber 120 and abuts against the top of the drill bit 4, the lower end of the first guide protrusion 33 is still in the first guide groove 51, that is, the slider 5 is not separated from the first guide protrusion 33.

[0036] Optionally, the drill bit 4 has a second guide protrusion 42 at one end facing the receiving chamber 120. The second guide protrusion 42 extends along the axial direction of the sliding housing 12. The sliding member 5 has a second guide groove 52, and the second guide protrusion 42 can extend into the second guide groove 52 to guide the sliding of the sliding member 5. At the same time, it can limit the sliding member 5 circumferentially to prevent the sliding member 5 from moving radially along the receiving chamber 120. The second guide protrusion 42 has a liquid inlet hole 421, which is connected to the liquid outlet channel 41. When the sliding member 5 slides upward to the uppermost end of the receiving chamber 120 and abuts against the water inlet, the second guide protrusion 42 and the second guide groove 52 are completely separated. At this time, the coolant in the receiving chamber 120 can flow through the liquid inlet hole 421 into the liquid outlet channel 41 to cool the drill bit 4. That is, when the sliding member 5 slides upward to the uppermost end of the receiving chamber 120, the second guide protrusion 42 and the second guide groove 52 are completely separated.

[0037] Specifically, in this embodiment, the water inlet 3 is provided with a first guide protrusion 33, and the drill bit 4 is provided with a second guide protrusion 42, and the first guide protrusion 33 and the second guide protrusion 42 are coaxially arranged. Both the first guide protrusion 33 and the second guide protrusion 42 are cylindrical.

[0038] In other embodiments, only the first guide protrusion 33 or only the second guide protrusion 42 may be provided.

[0039] Optionally, the lower end face of the drill bit 4 is provided with multiple dome-shaped protrusions 43. The contact area between the tooth tip of the dome-shaped protrusion 43 and the rock is relatively small. Under the same drilling pressure, it can generate higher local compressive stress. When the stress exceeds the compressive strength of the rock, it can break the rock, thus achieving high rock-breaking efficiency. Furthermore, compared to sharp conical or wedge-shaped teeth, the dome-shaped protrusions 43 do not have weak sharp corners. During drilling in formations with high hardness, they can effectively resist tooth breakage and fracture, exhibiting good impact resistance and wear resistance.

[0040] Optionally, the outer peripheral wall of the drill bit 4 is provided with multiple petal-shaped protrusions 44 at intervals. During the rotation of the drilling and production equipment, the groove between two adjacent petal-shaped protrusions 44 can efficiently discharge the guiding mud. Each petal-shaped protrusion 44 has multiple columnar protrusions 441 at intervals on its sidewall. The columnar protrusions 441 can break larger rock blocks into smaller rock blocks, thereby facilitating the discharge of rock blocks into the well along with the drilling fluid.

[0041] Furthermore, a liquid outlet 45 is provided between two adjacent petal-shaped protrusions 44, and the liquid outlet 45 is connected to the liquid outlet channel 41. The coolant flowing out through the liquid outlet 45 can flush away the mud between the two petal-shaped protrusions 44, thereby achieving rapid discharge of the mud.

[0042] Specifically, in this embodiment, six petal-shaped protrusions 44 and six liquid outlet holes 45 are provided. In other embodiments, the specific number of petal-shaped protrusions 44 and liquid outlet holes 45 can be set as needed, and no specific limitation is made here.

[0043] In addition, the drill bit 4 is detachably mounted on the lower end of the sliding housing 12 via a threaded connection. After prolonged use, the drill bit 4 will gradually wear down and become unable to effectively cut rock for drilling. Therefore, it requires regular maintenance and replacement. The threaded connection method makes disassembly and removal convenient, facilitating subsequent maintenance and replacement.

[0044] Optionally, the outer peripheral wall of the sliding member 5 is provided with a protrusion 53. The protrusion 53 provides a large contact area, which can convert the pressure of the cooling water injected into the receiving chamber 120 into the axial thrust of the sliding member 5, ensuring the smooth sliding of the sliding member 5. The diameter of the protrusion 53 is smaller than the inner diameter of the sliding housing 12, which can ensure that the sliding member 5 always slides along the axial direction of the sliding housing 12, and also ensure that the coolant can flow from the annular space between the outer wall of the protrusion 53 and the inner wall of the sliding housing 12.

[0045] Specifically, in this embodiment, the protrusion 53 is located in the middle of the slider 5, and both ends are transitioned to the outer peripheral wall of the slider 5 by a slope. The slope can provide a certain guiding effect for the coolant in the fixed cavity.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A drilling and production apparatus, characterized in that, include: The housing (1) includes a waterproof outer shell (11) and a sliding outer shell (12), wherein the sliding outer shell (12) is slidably disposed inside the waterproof outer shell (11); A connector (2) is provided at the upper opening of the sliding housing (12), and the connector (2) has a first liquid inlet channel (21). The water inlet (3) is spaced apart from the connector (2) and located inside the sliding housing (12). The water inlet (3) has a second liquid inlet channel (31). The water inlet (3) has an open state in which the second liquid inlet channel (31) is connected to the first liquid inlet channel (21) and a closed state in which the second liquid inlet channel (31) is not connected to the first liquid inlet channel (21). The drill bit (4) is detachably disposed at the lower end of the sliding housing (12) and slides through the lower opening of the waterproof housing (11); the drill bit (4) has a liquid outlet channel (41); the drill bit (4), the water inlet (3) and the inner wall of the sliding housing (12) form a receiving chamber (120). The sliding member (5) is slidably disposed in the receiving chamber (120) along the axial direction of the sliding outer shell (12) for hammering the drill bit (4). The coolant flows through the first inlet channel (21) and the second inlet channel (31) into the receiving chamber (120), and then is discharged through the outlet channel (41).

2. The drilling and production apparatus according to claim 1, characterized in that, It also includes the ball head (6) and the first elastic element; The water inlet (3) is provided with an installation groove (32), and the ball head (6) is provided at the opening of the installation groove (32) and is directly opposite the first liquid inlet channel (21); the first elastic element is provided in the installation groove (32) and is connected between the ball head (6) and the bottom of the installation groove (32); In the open state, the ball head (6) does not block the first liquid inlet channel (21); in the closed state, the ball head (6) blocks the first liquid inlet channel (21).

3. The drilling and production apparatus according to claim 1, characterized in that, The temperature of the coolant is 4℃~10℃.

4. The drilling and production apparatus according to claim 1, characterized in that, The water inlet (3) is provided with a first guide protrusion (33) at one end facing the receiving chamber (120). The first guide protrusion (33) extends along the axial direction of the sliding outer shell (12). The sliding member (5) is provided with a first guide groove (51). The first guide protrusion (33) can extend into the first guide groove (51).

5. The drilling and production apparatus according to claim 1, characterized in that, The drill bit (4) is provided with a second guide protrusion (42) at one end facing the receiving chamber (120). The second guide protrusion (42) extends along the axial direction of the sliding outer shell (12). The sliding member (5) is provided with a second guide groove (52). The second guide protrusion (42) can extend into the second guide groove (52). The second guide protrusion (42) has a liquid inlet hole (421), which is connected to the liquid outlet channel (41).

6. The drilling and production apparatus according to claim 1, characterized in that, The housing (1) further includes a second elastic member. The outer wall of the sliding outer shell (12) is provided with a first abutting part (121), and the inner wall of the waterproof outer shell (11) is provided with a second abutting part (111). The second elastic member is connected between the first abutting part (121) and the second abutting part (111).

7. The drilling and production apparatus according to claim 1, characterized in that, The lower end face of the drill bit (4) is provided with multiple dome protrusions (43).

8. The drilling and production apparatus according to claim 1, characterized in that, The outer peripheral wall of the drill bit (4) is provided with a plurality of petal-shaped protrusions (44) spaced apart, and the side wall of each petal-shaped protrusion (44) is provided with a plurality of columnar protrusions (441) spaced apart.

9. The drilling and production apparatus according to claim 8, characterized in that, A liquid outlet hole (45) is provided between two adjacent petal-shaped protrusions (44), and the liquid outlet hole (45) is connected to the liquid outlet channel (41).

10. The drilling and production apparatus according to any one of claims 1-9, characterized in that, The outer peripheral wall of the sliding member (5) is provided with a protrusion (53), the diameter of which is smaller than the inner diameter of the sliding outer shell (12).

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