Slip structure and oil drilling equipment

Abstract

The utility model is applicable to the field of slip structures, and discloses a slip structure and oil drilling equipment, which includes a support assembly, a first slip assembly, a second slip assembly, a locking assembly and a connecting rod assembly. The support assembly is provided with an assembly hole, and the assembly hole is used for the oil pipe to be passed through; the first slip assembly and the second slip assembly are respectively arranged relatively to form a clamping cavity, the clamping cavity is connected to the assembly hole, and the clamping cavity is used to bundle the oil pipe; the locking assembly is connected to the support assembly, and the locking assembly has a self-locking state and an unlocking state. The locking assembly is relatively fixedly connected to the support assembly in the self-locking state, and is relatively rotationally connected to the support assembly in the unlocking state; the connecting rod assembly is used to make the first slip assembly and the second slip assembly approach or move away, and the connecting rod assembly is used to make the first slip assembly and the second slip assembly approach or move away. In the utility model, the slip structure can bundle the oil pipe and has a self-locking state and an unlocking state, so as to facilitate the assembly and disassembly of the oil pipe.

Description

Technical Field

[0001] The utility model relates to the field of slip structures, in particular to a slip structure and oil drilling equipment. Background Art

[0002] Oil well repair operations require the removal of oil pipes from the well one by one. The formation pressure is very high. When the weight of the remaining pipe string in the well is less than the formation pressure, the oil pipe string automatically rises under the formation pressure, which brings many difficulties and dangers to the work of pulling the oil pipe. At present, the method adopted by most well repair operations is: release the pressure before repairing the well, and then pull the oil pipe. The construction operation has high requirements for site environmental protection. However, since most of the oil pipes pulled out of the well carry dead oil, dead wax, polymers, and mud, the pollutants are brought out of the ground, which pollutes the site more and releases the pressure. It will cause great damage to the liquid-producing formation. Therefore, improving the efficiency of pulling and lowering the oil pipe operation is of great significance for underground operations. Utility Model Content

[0003] One purpose of the utility model is to provide a slip structure and oil drilling equipment, which aims to solve the technical problems of oil pipe assembly and disassembly.

[0004] To achieve the above-mentioned purpose, the utility model provides a solution: a slip structure, the oil drilling equipment includes a bracket assembly, a first slip assembly, a second slip assembly, a locking assembly and a connecting rod assembly, the bracket assembly is provided with an assembly hole, the assembly hole is used for the oil pipe to be passed through; the first slip assembly and the second slip assembly are respectively arranged relative to each other to form a clamp cavity, the clamp cavity and the assembly hole are connected, and the clamp cavity is used for bundling the oil pipe; the locking assembly is connected to the bracket assembly, the locking assembly has a self-locking state and an unlocking state, the locking assembly is relatively fixedly connected to the bracket assembly in the self-locking state, and is relatively rotationally connected to the bracket assembly in the unlocking state; the connecting rod assembly is used to make the first slip assembly and the second slip assembly close to or away from each other, and the connecting rod assembly is used to make the first slip assembly and the second slip assembly close to or away from each other.

[0005] As an embodiment, the first cava assembly and the second cava assembly each include a main body, a cava piece and a base. The main body is connected to the connecting rod assembly. The main body is provided with a sub-cavity for forming a clamp cavity. The base is connected to the bottom end of the main body. The cava piece is assembled in the sub-cavity and slides with the main body along the axial direction of the sub-cavity. The cava piece can selectively abut the base.

[0006] As an embodiment, the first cava assembly and the second cava assembly both include a wedge block, which is arranged between the cava piece and the main body. From the bottom end to the top end of the main body, the surface of the cava piece in contact with the wedge block gradually converges toward the axial direction of the clamp cavity.

[0007] As an implementation mode, in the direction from the bottom end to the top end of the main body, the surface of the wedge block in contact with the tile piece gradually converges toward the axial direction of the hoop cavity.

[0008] As an embodiment, the slip structure further includes guide posts, and the guide posts respectively penetrate each other along directions relative to the first slip assembly and the second slip assembly.

[0009] As an embodiment, the locking assembly includes a shell, a return spring, a locking key, a latch and a ratchet, the ratchet and the bracket assembly are rotatably connected, the shell and the bracket assembly are connected, one end of the return spring is connected to the shell, the other end of the return spring is connected to the locking key, the locking key passes through the shell and the toothed structure of the ratchet is coordinated, and the latch passes through the shell and the locking key and is detachably connected.

[0010] As an embodiment, the bracket assembly includes a base, a half-moon ring and an armrest, the base is provided with an assembly hole, the locking assembly and the connecting rod assembly are respectively connected to the base, the assembly hole is semi-open, the half-moon ring is rotatably connected to the base, the armrest is connected to the half-moon ring, and the armrest is used to push the half-moon ring to rotate along the axis direction of the assembly hole to close the semi-open assembly hole.

[0011] As an embodiment, the armrest includes a rod, a reset member and a ring. A track groove is opened at the base around the axis of the assembly hole. The head and the end of the track groove have limit openings. The width of the limit opening is greater than the width of the rest of the track groove. The rod passes through the track groove and is connected to the half-moon ring. The reset member is respectively connected to the rod and the ring. The reset member is used to pull the ring into the limit opening when the rod moves to the limit opening.

[0012] In order to achieve the above object, the utility model provides a solution: an oil drilling equipment, the oil drilling equipment comprises an oil pipe and any one of the above slip structures, the slip structure bundles the oil pipe.

[0013] As an implementation mode, the oil drilling equipment further includes a pulley and a rope, the pulley and the slip structure are rotatably connected, and the rope is used to be sleeved on the pulley and fixed on the ground.

[0014] Compared with the prior art, the slip structure and door lock of the utility model have the following beneficial effects:

[0015] The oil pipe passes through the oil pipe and the clamp cavity in sequence, and the first slip assembly and the second slip assembly bundle the oil pipe under the action of the connecting rod assembly, and the locking assembly locks the connecting rod assembly to prevent the first slip assembly and the second slip assembly from loosening. Specifically, the connecting rod assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and a handle, the handle is connected to the locking assembly, one end of the first connecting rod is connected to the locking assembly, and the other end is connected to the first slip assembly, one end of the second connecting rod is connected to the locking assembly, and the other end is rotatably connected to the third connecting rod, one end of the third connecting rod away from the second connecting rod is rotatably connected to the second slip assembly, one end of the fourth connecting rod is rotatably connected to the bracket assembly, and the other end is rotatably connected to the second slip assembly. The locking assembly is in an unlocked state, and the handle is toggled to move the first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod to move and drive the first slip assembly and the second slip assembly to approach each other to bundle the oil pipe. Finally, the locking assembly is in a self-locking state, and the first connecting rod, the second connecting rod, the third connecting rod, and the fourth connecting rod cannot move. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a front schematic diagram of the slip structure provided by an embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the back side of the slip structure provided by the embodiment of the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of the slip structure provided in an embodiment of the utility model.

[0020] Description of Figure Numbers:

[0021] Pulley 200, slip structure 100, bracket assembly 10, assembly hole 101, base 11, track groove 102, half-moon ring 12, handrail 13, rod 131, collar 133, first slip assembly 20a

[0022] Second slip assembly 20b, hoop cavity 201, main body 21, slip piece 22, base 23, wedge block 24, locking assembly 30, housing 31, latch 34, ratchet 35, connecting rod assembly 40, first connecting rod 41

[0023] The second connecting rod 42 , the third connecting rod 43 , the fourth connecting rod 44 , the handle 45 , and the guide column 50 . DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0026] See also Figures 1 to 3 , Figure 1 1 is a front view of a slip structure 100 provided in an embodiment of the utility model; Figure 2 is a schematic diagram of the back side of the slip structure 100 provided in an embodiment of the utility model; Figure 3 It is a cross-sectional schematic diagram of the slip structure 100 provided in an embodiment of the utility model.

[0027] The present embodiment provides a slip structure 100, which includes a support assembly 10, a first slip assembly 20a, a second slip assembly 20b, a locking assembly 30 and a connecting rod assembly 40. The support assembly 10 is provided with an assembly hole 101, and the assembly hole 101 is used for the oil pipe to be passed through; the first slip assembly 20a and the second slip assembly 20b are respectively arranged opposite to each other to form a clamping cavity 201, and the clamping cavity 201 is connected to the assembly hole 101, and the clamping cavity 201 is used for bundling the oil pipe; the locking assembly 30 is connected to the support assembly 10, and the locking assembly 30 has a self-locking state and an unlocking state. The locking assembly 30 is relatively fixedly connected to the support assembly 10 in the self-locking state, and the locking assembly 30 is relatively fixedly connected to the support assembly 10 in the unlocking state. Relative rotation connection; the connecting rod assembly 40 is used to make the first cava assembly 20a and the second cava assembly 20b move closer or farther away, the connecting rod assembly 40 includes a first connecting rod 41, a second connecting rod 42, a third connecting rod 43, a fourth connecting rod 44 and a handle 45, the handle 45 is connected to the locking assembly 30, one end of the first connecting rod 41 is connected to the locking assembly 30, and the other end is connected to the first cava assembly 20a, one end of the second connecting rod 42 is connected to the locking assembly 30, and the other end is rotationally connected to the third connecting rod 43, one end of the third connecting rod 43 away from the second connecting rod 42 is rotationally connected to the second cava assembly 20b, one end of the fourth connecting rod 44 is rotationally connected to the bracket assembly 10, and the other end is rotationally connected to the second cava assembly 20b.

[0028] In this embodiment, the oil pipe passes through the oil pipe and the clamp cavity 201 in sequence, the first slip assembly 20a and the second slip assembly 20b bundle the oil pipe under the action of the connecting rod assembly 40, and the locking assembly 30 locks the connecting rod assembly 40 to prevent the first slip assembly 20a and the second slip assembly 20b from loosening. Specifically, the connecting rod assembly 40 includes a first connecting rod 41, a second connecting rod 42, a third connecting rod 43, a fourth connecting rod 44 and a handle 45, the handle 45 is connected to the locking assembly 30, one end of the first connecting rod 41 is connected to the locking assembly 30, and the other end is connected to the first slip assembly 20a, one end of the second connecting rod 42 is connected to the locking assembly 30, and the other end is rotatably connected to the third connecting rod 43, one end of the third connecting rod 43 away from the second connecting rod 42 is rotatably connected to the second slip assembly 20b, one end of the fourth connecting rod 44 is rotatably connected to the bracket assembly 10, and the other end is rotatably connected to the second slip assembly 20b. The locking assembly 30 is in an unlocked state, and the handle 45 is toggled to move the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, and the fourth connecting rod 44 to move and drive the first slip assembly 20a and the second slip assembly 20b to approach each other to bundle the oil pipe. Finally, the locking assembly 30 is in a self-locking state, and the first connecting rod 41, the second connecting rod 42, the third connecting rod 43, and the fourth connecting rod 44 cannot move.

[0029] The first slip assembly 20a and the second slip assembly 20b both include a main body 21, a slip piece 22 and a base 23. The main body 21 is connected to the connecting rod assembly 40. The main body 21 is provided with a sub-cavity for forming a hoop cavity 201. The sub-cavity on the main body 21 of the first slip assembly 20a and the sub-cavity on the main body 21 of the second slip assembly 20b relatively form a hoop cavity 201. The base 23 is connected to the bottom end of the main body 21. The slip piece 22 is assembled in the sub-cavity and slides with the main body 21 along the axial direction of the sub-cavity. The slip piece 22 can selectively abut the base 23. When the oil pipe shakes up and down, it will drive the slip piece 22 to slide along the axial direction of the sub-cavity, thereby playing a certain buffering role, preventing the instantaneous tension of the oil pipe from being too large and pulling out the first slip assembly 20a and the second slip assembly 20b.

[0030] The base 23 and the main body 21 can be made in an integral manner, or can be made separately and then assembled together.

[0031] The first slip assembly 20a and the second slip assembly 20b both include a wedge block 24, which is disposed between the slip piece 22 and the main body 21. From the bottom end to the top end of the main body 21, the contact surface of the slip piece 22 and the wedge block 24 gradually converges toward the axial direction of the clamp cavity 201. In this way, the resistance encountered by the slip piece 22 gradually increases during the upward movement, thereby achieving a better buffering effect.

[0032] In the direction from the bottom end to the top end of the main body 21, the surface of the wedge block 24 in contact with the slip tile 22 gradually converges toward the axial direction of the hoop cavity 201. In this way, the slip tile 22 is subjected to gradually greater resistance during the upward movement, thereby achieving a better buffering effect.

[0033] The slip structure 100 further includes a guide post 50, which penetrates the first slip assembly 20a and the second slip assembly 20b in the relative directions. When the first slip assembly 20a and the second slip assembly 20b are away from each other, the first slip assembly 20a and the second slip assembly 20b will slide along the extending direction of the guide post 50; when the first slip assembly 20a and the second slip assembly 20b are close to each other, the first slip assembly 20a and the second slip assembly 20b will slide along the extending direction of the guide post 50. In the whole process, the guide post 50 plays a guiding role, thereby ensuring that the first slip assembly 20a and the second slip assembly 20b move along a fixed track.

[0034] The locking assembly 30 includes a housing 31, a return spring, a locking key, a latch 34 and a ratchet 35. The ratchet 35 is rotatably connected to the bracket assembly 10. The housing 31 is connected to the bracket assembly 10. One end of the return spring is connected to the housing 31, and the other end of the return spring is connected to the locking key. The locking key is inserted through the housing 31 and the toothed structure of the ratchet 35 cooperates. The latch 34 is inserted through the housing 31 and the locking key is detachably connected. The ratchet 35 is provided with a plurality of tooth grooves around its axis. When the locking key is inserted into the tooth groove, the ratchet 35 can be prevented from rotating. When the latch 34 is connected to the locking key, the locking key can be prevented from moving, thereby ensuring that the ratchet 35 is in a locked state. When the latch 34 and the locking key are separated, the locking key can be separated from the tooth groove of the ratchet 35. The return spring provides elastic force to the locking key to ensure that the locking key continues to abut against the outer contour of the ratchet 35. When the latch 34 is pulled out, the ratchet 35 rotates, and the locking key keeps moving up and down under the action of the return spring. Only when the latch 34 and the locking key are connected can the locking key be locked and inserted into the tooth groove.

[0035] The bracket assembly 10 includes a base 11, a half-moon ring 12 and an armrest 13. The base 11 is provided with an assembly hole 101. The locking assembly 30 and the connecting rod assembly 40 are respectively connected to the base 11. The assembly hole 101 is semi-open. The half-moon ring 12 is rotatably connected to the base 11. The armrest 13 is connected to the half-moon ring 12. The armrest 13 is used to push the half-moon ring 12 to rotate around the axis direction of the assembly hole 101 to close the semi-open assembly hole 101. The assembly hole 101 is semi-open, that is, there is a gap in the circumferential direction of the assembly hole 101, and the gap can occupy one quarter, one half, etc. In this way, when assembling the oil pipe, the oil pipe can be assembled into the assembly hole 101 through the gap, and then the half-moon ring 12 is rotated by the armrest 13, and the half-moon ring 12 closes the gap on the assembly hole 101.

[0036] The armrest 13 includes a rod 131, a reset member and a collar 133. The base 11 is provided with a track groove 102 around the axis of the assembly hole 101. The head and the end of the track groove 102 have a limit opening. The width of the limit opening is greater than the width of the rest of the track groove 102. The rod 131 passes through the track groove 102 and is connected to the half-moon ring 12. The reset member is connected to the rod 131 and the collar 133 respectively. The reset member is used to pull the collar 133 into the limit opening when the rod 131 moves to the limit opening. In the locked state, the reset member first pulls the collar 133 and inserts it into the limit opening, so that the armrest 13 cannot rotate along the track groove 102; in the unlocked state, the collar 133 is pulled away from the limit opening, and the rod 131 slides along the track groove 102.

[0037] The present application also protects an oil drilling equipment, characterized in that it comprises: an oil pipe and any one of the above-mentioned slip structures 100, the slip structure 100 is used to bundle the oil pipe, and the oil pipe is inserted into an oil well to extract oil.

[0038] The oil drilling equipment also includes a pulley 200 and a rope, the pulley 200 and the slip structure 100 are rotatably connected, and the rope is used to be sleeved on the pulley 200 and fixed on the ground. The rope can slide along the pulley 200, and the rope is fixed on the ground to provide an anchor point for the slip structure 100.

[0039] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0040] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A slip structure, characterized in that: include: The bracket assembly is provided with an assembly hole, wherein the assembly hole is used for passing the oil pipe; The first slip assembly and the second slip assembly are respectively arranged opposite to each other to form a clamp cavity, the clamp cavity is communicated with the assembly hole, and the clamp cavity is used for bundling the oil pipe; A locking assembly connected to the bracket assembly, wherein the locking assembly has a self-locking state and an unlocking state, wherein the locking assembly is relatively fixedly connected to the bracket assembly in the self-locking state, and relatively rotationally connected to the bracket assembly in the unlocking state; as well as A connecting rod assembly is used to make the first cava assembly and the second cava assembly move closer to or farther away from each other, the connecting rod assembly comprising a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod and a handle, the handle being connected to the locking assembly, one end of the first connecting rod being connected to the locking assembly, and the other end being connected to the first cava assembly, one end of the second connecting rod being connected to the locking assembly, and the other end being rotatably connected to the third connecting rod, one end of the third connecting rod away from the second connecting rod being rotatably connected to the second cava assembly, one end of the fourth connecting rod being rotatably connected to the bracket assembly, and the other end being rotatably connected to the second cava assembly.

2. The slip structure according to claim 1, characterized in that: The first cava assembly and the second cava assembly each include a main body, a cava piece and a base. The main body is connected to the connecting rod assembly. The main body is provided with a sub-cavity for forming the clamp cavity. The base is connected to the bottom end of the main body. The cava piece is assembled in the sub-cavity and slides with the main body along the axial direction of the sub-cavity. The cava piece can selectively abut the base.

3. The slip structure according to claim 2, characterized in that: The first cava assembly and the second cava assembly both include a wedge block, which is arranged between the cava piece and the main body. From the bottom end to the top end of the main body, the surface of the cava piece in contact with the wedge block gradually converges toward the axial direction of the clamp cavity.

4. The slip structure according to claim 3, characterized in that: In the direction from the bottom end to the top end of the main body, the surface of the wedge block in contact with the slip sheet gradually converges toward the axial direction of the hoop cavity.

5. The slip structure according to claim 1, characterized in that: The slip structure further includes guide posts, and the guide posts penetrate each other along the relative directions of the first slip assembly and the second slip assembly.

6. The slip structure according to claim 1, characterized in that: The locking assembly includes a shell, a return spring, a locking key, a latch and a ratchet; the ratchet is rotatably connected to the bracket assembly, the shell is connected to the bracket assembly, one end of the return spring is connected to the shell, the other end of the return spring is connected to the locking key, the locking key passes through the shell and cooperates with the toothed structure of the ratchet, and the latch passes through the shell and is detachably connected to the locking key.

7. The slip structure according to claim 1, characterized in that: The bracket assembly includes a base, a half-moon ring and an armrest, the base is provided with the assembly hole, the locking assembly and the connecting rod assembly are respectively connected to the base, the assembly hole is semi-open, the half-moon ring is rotatably connected to the base, the armrest is connected to the half-moon ring, and the armrest is used to push the half-moon ring to rotate along the axis direction of the assembly hole to close the semi-open assembly hole.

8. The slip structure according to claim 7, characterized in that: The handrail includes a rod, a reset member and a ring. The base is provided with a track groove around the axis of the assembly hole. The head end and the tail end of the track groove have limit openings. The width of the limit opening is greater than the width of the rest of the track groove. The rod passes through the track groove and is connected to the half-moon ring. The reset member is respectively connected to the rod and the ring. The reset member is used to pull the ring into the limit opening when the rod moves to the limit opening.

9. An oil drilling equipment, characterized in that: include: An oil pipe and a slip structure as claimed in any one of claims 1 to 8, wherein the slip structure is used to bundle the oil pipe.

10. The oil drilling equipment according to claim 9, characterized in that: The oil drilling equipment also includes a pulley and a rope. The pulley is rotatably connected to the slip structure, and the rope is used to be sleeved on the pulley and fixed on the ground.

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