Skid-mounted horizontal double-pipe connecting device of land petroleum drilling machine

Abstract

The invention discloses a skid-mounted horizontal double-pipe connecting device of a land petroleum drilling machine, and belongs to the technical field of petroleum drilling equipment. Skid seats are arranged at the two ends of a middle skid seat, pipe column supports for placing drill rods are arranged at the two ends of the skid seats, a translation tackle assembly is arranged at one end of the middle skid seat, and an upper shackle assembly support is fixedly arranged at the other end of the middle skid seat; the upper shackle assembly is arranged on the upper shackle assembly support and is used for fixing a drill rod to be connected; the positioning spinning buckle assembly is arranged on the translation tackle assembly, and the translation tackle assembly is used for conveying another drill rod to be connected to the butt joint position of the drill rod to be connected, and the drill rod to be connected is connected through the positioning spinning buckle assembly and locked in a spinning buckle mode. The automation level of the drilling machine is improved, and horizontal off-line root establishment operation and drilling operation do not interfere with each other.

Description

Technical Field

[0001] The invention relates to a skid-mounted horizontal double-root connection device for a land oil drilling rig, belonging to the technical field of oil drilling equipment. Background Art

[0002] With the continuous development of the oil drilling industry and the continuous progress of oil drilling rig application technology, the current automation, digitization, and intelligent oil drilling rig application technology, which aims to ensure operational safety, reduce the number of operators, reduce the labor intensity of operators, and improve operational efficiency, has made great progress and has been widely used. Among them, the automatic handling system of drilling rig pipes, as a new type of drilling equipment, mainly completes the mechanized transportation of drilling pipes such as drill pipes, drill collars, and casings, as well as the operation of stand and pipe discharge, to achieve an efficient, safe, and low-intensity drilling tool handling operation mode, effectively solving the problems of high labor intensity, high operational risks, low operational efficiency, and easy personal injury accidents in drilling tool handling, greatly reducing the labor intensity of drillers and improving the automation and intelligence level of drilling rigs.

[0003] The automatic pipe handling system is mainly based on the movement of the mechanism, and the complexity of the mechanism of different equipment is different. The equipment mainly moves, swings up and rotates to achieve functions such as clamping, pushing, pulling, rotating and lifting. It adopts an integrated control system of electricity, liquid and gas, and controls through various sensors and pre-programmed programs. The main equipment has independent PLC control, which can be controlled separately or integrated. The automatic pipe handling system generally needs to be used in conjunction with the top drive, hydraulic elevator, power slip, etc.

[0004] At present, the automatic pipe handling system of the oil drilling industry is divided into push-type, suspension-type, grab-type and combined pipe handling systems according to different root handling methods. The main difference between various pipe handling systems lies in the different pipe discharge equipment and methods, but the mechanized transportation and root establishment methods are similar. Mechanized transportation mainly uses power catwalks to transport pipes from the yard or drill pipe box to the drilling floor; root establishment is mainly completed by iron roughnecks and power ratholes; root release and buckling are mainly achieved by hydraulic elevators installed on the top drive.

[0005] However, the applicant has found through research that the existing drilling rig pipe string automatic processing system has the following problems during operation: 1. The current automated pipe handling systems for drilling rigs all adopt the traditional vertical root establishment operation mode, in which the root establishment and root discharge operations are all carried out on the drilling table. The pipes are placed at a high position by relying on the second-floor table and the root box on the drilling table. The connection between various processes in the limited space on the table is mostly high-altitude operation, which poses a safety hazard. The complex handover actions affect the drilling efficiency to a certain extent, which restricts the application and development of the automated pipe handling system for drilling rigs.

[0006] 2. At present, the push-type, suspended and combined pipe string automatic handling systems that are widely used will produce certain deformation of the second-level platform manipulator due to the influence of gravity when lifting heavy pipe strings (such as large-diameter drill collars). In severe cases, it is easy to make it difficult for the pipe string to run according to the set trajectory, which to a certain extent affects the smoothness of drilling operations and the stability of the main structure of the derrick.

[0007] 3. Compared with the push-type, suspended and combined pipe string automatic handling systems, the grab-type pipe string automatic handling system eliminates the need for equipment such as pipe laying machines, power catwalks and drill table manipulators, but the matching drilling rigs have great limitations and are generally only suitable for small drilling rigs that require single-rod operations. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a skid-mounted horizontal double-root connection device for a land oil drilling rig, so as to solve the problem that the existing device reduces the labor intensity of drillers, improves the automation level of the drilling rig, and realizes that the horizontal offline root establishment operation and the drilling operation do not interfere with each other; In order to achieve the above purpose / solve the above technical problems, the present invention is implemented by adopting the following technical solutions: A skid-mounted horizontal double-root connection device for a land oil drilling rig, comprising: An intermediate skid seat, wherein skid seats are provided at both ends of the intermediate skid seat, and pipe column supports for placing drill pipes are provided at both ends of the skid seat, a translation pulley assembly is provided on one end of the intermediate skid seat, and a top-shackle assembly support is fixedly provided on the other end; A make-up and break-out assembly, which is arranged on a make-up and break-out assembly support and is used to fix a drill rod to be connected; A positioning turnbuckle assembly is arranged on the translation pulley assembly, and the translation pulley assembly is used to transport another drill rod to be connected to a docking position with the one drill rod to be connected, connect through the positioning turnbuckle assembly, and turn the turnbuckle to lock.

[0009] Optionally, the translation pulley assembly includes a translation guide rail, a translation cylinder and a movable pulley, the translation guide rail is arranged on an intermediate skid seat, the movable pulley is equipped with rollers and can move horizontally along the translation guide rail, and the extension or retraction of the translation cylinder drives the movable pulley to move forward and backward along the translation guide rail.

[0010] Optionally, the translation guide rail and the intermediate skid seat are connected in a detachable positioning manner.

[0011] Optionally, a displacement sensor is built into the translation cylinder to accurately control the extension and retraction stroke of the cylinder.

[0012] Optionally, the positioning buckle assembly is detachably connected to the moving pulley via a positioning buckle assembly buffer frame.

[0013] Optionally, the positioning spindle assembly includes a clamping arm, a hydraulic motor and a spindle wheel assembly, the clamping arm is installed on a mounting seat, and a guide rod is provided between the clamping arms, the clamping arm is tightened or loosened by extending and retracting the clamping hydraulic cylinder, the spindle wheel assembly is arranged at the clamping end of the clamping arm, and the friction spindle of the spindle wheel assembly is driven by the rotation of the hydraulic motor to clamp the drill pipe, and after the pre-tightening load is reached, the hydraulic motor stops rotating and opens the clamping arm to complete the spindle operation; when undoing the screw, the positioning spindle assembly clamps the drill tool and rotates in the opposite direction until the drill tool thread is completely unscrewed.

[0014] Optionally, the make-up and break-out assembly includes a clamp, a punch clamp and a tightening cylinder, the clamp is used to clamp the female joint of the drill tool, the punch clamp is used to clamp the male joint of the drill tool, and tightening is performed by rotating the tightening cylinder around the drill tool.

[0015] Optionally, the skid seat is connected to both ends of the middle skid seat respectively through pin ear plates.

[0016] Optionally, the pipe column support includes a screw nut adjustment device arranged at both ends of the skid seat, the screw nut adjustment device close to one end of the translation pulley assembly is used to assist the positioning spindle assembly to straighten the drill rod, and the screw nut adjustment device close to one end of the upper and lower breakaway assembly is used to assist the upper and lower breakaway assembly to straighten the drill column.

[0017] Optionally, a V-shaped adjusting roller for conveying the drill rod is provided on the top of the lead screw nut adjusting device.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention is powered by a drilling rig integrated hydraulic station or a dedicated hydraulic station for pipe automation, and the clamping pliers and the punching pliers cooperate to complete the large-torque unbuckling and fixed-torque tightening of double-root pipes in the horizontal direction, and the positioning spindle assembly cooperates with the clamping pliers to complete the small-torque rapid spindle of the drill tool in the horizontal direction, thereby realizing horizontal offline root establishment, and the ground root establishment operation and the drilling operation do not interfere with each other, and the automatic control process is simple and easy to operate; the derrick has no second-layer platform, the base has no root box and the high-altitude suspended pipe laying machine, so high-altitude operations are avoided and inherent safety is achieved; the skid-mounted horizontal double-root connection device has a wide range of use, a reasonable structural design, and the whole machine works stably and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic structural diagram of the device of the present invention; Figure 2 The figure shows a schematic diagram of the top structure of the upper and lower shackle assembly of the present invention; Figure 3 Shown is a front schematic view of the upper and lower shackle assembly of the present invention; Figure 4 The figure shows a schematic diagram of the top view of the positioning buckle assembly of the present invention; Figure 5Shown is a partial cross-sectional structural schematic diagram of the present invention; In the figure: 1, pipe column bracket; 11, screw nut adjustment device; 12, V-shaped adjustment roller; 2, translation pulley assembly; 21, translation guide rail; 22, translation cylinder; 23, moving pulley; 3. Positioning and rotating buckle assembly buffer frame; 4. Upper and lower buckle assembly support; 5. Intermediate skid seat; 6. Hydraulic control valve manifold; 7. Electric control system; 8. Skid seat; 9, buckle assembly; 91, clamping pliers; 92, buckle punching pliers; 93, buckle cylinder; 10, positioning spindle assembly; 101, mounting seat; 102, guide rod; 103, clamping arm; 104, clamping hydraulic cylinder; 105, high torque hydraulic motor; 106, spindle wheel assembly. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] like Figure 1-Figure 5 As shown, a skid-mounted horizontal double-root connection device for a land oil drilling rig is disclosed, comprising: An intermediate skid seat 5, wherein skid seats 8 are provided at both ends of the intermediate skid seat 5, and pipe column supports 1 for placing drill pipes are provided at both ends of the skid seat 8, a translation pulley assembly 2 is provided on one end of the intermediate skid seat 5, and an upper shackle assembly support 4 is fixedly provided on the other end; A top-and-bottom tie assembly 9, which is arranged on a top-and-bottom tie assembly support 4 and is used to fix a drill rod to be connected; The positioning turn-buckle assembly 10 is arranged on the translation pulley assembly 2, and the translation pulley assembly 2 is used to transport the other drill rod to be connected to the docking position with the one drill rod to be connected, connect through the positioning turn-buckle assembly 10, and turn the turn-buckle to lock.

[0024] like Figure 1 As shown, in the specific implementation process of this embodiment, the translation pulley assembly 2 includes a translation guide rail 21, a translation cylinder 22 and a moving pulley 23. The translation guide rail 21 is arranged on the middle skid seat 5. The moving pulley 23 is respectively installed with two sets of composite roller assemblies on its left and right sides, and can move horizontally along the translation guide rail 21. The middle skid seat 5, the positioning buckle assembly 10 and the moving pulley 23 are installed on the side with the translation guide rail 21. The extension or retraction of the translation cylinder 22 drives the moving pulley 23 to move forward and backward along the translation guide rail 21.

[0025] During the specific implementation of this embodiment, the translation guide rail 21 and the intermediate skid seat 5 are detachably positioned and connected, and a displacement sensor is built into the translation cylinder 21. The hydraulic control valve 6 is controlled by the electronic control system 7 to accurately control the extension and retraction stroke of the cylinder, thereby ensuring that the jaws of the upper and lower buckle assembly 9 and the positioning spin buckle assembly 10 are smoothly and accurately moved to their set working positions.

[0026] Among them, the hydraulic control valve assembly 6 and the electric control system 7 are prior art and will not be described in detail here. In this embodiment, all the night-pressing oil cylinders are provided with hydraulic power through the hydraulic control valve assembly 6 and controlled by the electric control system 7; like Figure 1 , Figure 4 Figure 5As shown, the positioning spindle assembly 10 is detachably connected to the mobile pulley 23 through the positioning spindle assembly buffer frame 3. The positioning spindle assembly 10 includes a clamping arm 103, a hydraulic motor 105 and a spindle wheel assembly 106. The clamping arm 103 is installed on the mounting seat 101, and a guide rod 102 is provided between the clamping arms 103. The clamping arm 103 is tightened or loosened by the extension of the clamping hydraulic oil cylinder 104. The spindle wheel assembly 106 is arranged at the clamping end of the clamping arm 103. The hydraulic motor 105 rotates to drive the friction spindle of the spindle wheel assembly 106 to clamp the drill pipe. After reaching the pre-tightening load, the hydraulic motor 105 stops rotating and opens the clamping arm 103 to complete the spin operation. When undoing the screw, the positioning spindle assembly 10 clamps the drill tool and rotates in the opposite direction to completely unscrew the drill tool thread. The positioning spindle assembly 10 is used for the rapid screwing in or out of the pipe joint.

[0027] The positioning spinner assembly 10 is detachably connected to the movable pulley 23 via the positioning spinner assembly buffer frame 3, and the positioning spinner assembly 10 has a larger drill tool clamping spinner range, thereby being able to adapt to the rapid spinner operation of drill tools of different specifications.

[0028] When making up, the clamping hydraulic cylinder 104 pulls the clamping arm 103 to close, so that the four friction wheels of the two sets of spin wheel assemblies 106 clamp the drill tool, and the high-torque hydraulic motor 105 drives the friction wheel to drive the drill rod to rotate. After reaching the pre-tightening load, the high-torque hydraulic motor 105 stops rotating and opens the clamping arm 103 to complete the spin operation; when undoing the spin, the positioning spin assembly 10 clamps the drill tool and rotates in the opposite direction until the drill thread is completely unscrewed.

[0029] like Figure 2-Figure 3 As shown, the make-up and break-out assembly 9 includes a clamp 91, a punch clamp 92 and a tightening cylinder 93. The clamp 91 is used to clamp the female joint of the drill tool, and the punch clamp 92 is used to clamp the male joint of the drill tool. The tightening is performed by rotating the tightening cylinder 93 around the drill tool.

[0030] The make-up and break-out assembly 9 is fixed to the middle skid 5 near the drilling platform side and is used for the make-up or break-out operation of the pipe joint. Before each operation, the make-up torque must be set. The make-up and break-out operation is completed by two sets of self-locking intelligent pliers (clamping pliers and punching pliers) for clamping the pipe. The clamping pliers 91 are fixedly connected to the make-up and break-out assembly bracket 4 through a connecting plate, a connecting pin, a spring washer and a nut. When tightening, the clamp 91 clamps the drill tool female joint. After the positioning screw assembly 10 completes the screwing action, the clamping block of the punch clamp 92 extends out and clamps the drill tool male joint. The punch clamp 92 is driven by the tightening hydraulic cylinder 93 to rotate around the drill tool to tighten, and the output torque is controlled to a set value by the sensor detection. When unclamping, the clamp 91 clamps the drill tool female joint, and the punch clamp 92 clamps the drill tool male joint and rotates in the opposite direction. The punch clamp 92 is driven by the tightening hydraulic cylinder 93 to rotate in the opposite direction around the drill tool to complete the unclamping action.

[0031] The punching and buckling pliers 92 are connected to the upper and lower buckle assembly bracket 4 through spring buffer devices (not shown in the figure) in the horizontal direction and the circumferential direction of the pliers body. The punching and buckling pliers 92 are allowed to move horizontally and a small amount of vertically relative to the clamping pliers 91. Each set of pliers is equipped with a clamping cylinder (not shown in the figure), and the extension and retraction of the clamping cylinder are used to open the jaws or initially clamp the pipe joint. The punching and buckling pliers 92 realize the torque required for the upper and lower buckle operation through two clamping hydraulic cylinders 93 installed on the upper and lower buckle assembly bracket 4 and a balance beam (not shown in the figure) connecting the two punching and buckling cylinder bodies; During the buckling and unbuckling operation, the clamp 91 is aligned with the female joint of the pipe, and the punching clamp is aligned with the male joint of the pipe. The clamp clamps the female joint of the pipe and the punching clamp clamps the male joint of the pipe. Then, the left / right punching cylinders are alternately extended / retracted to realize the clockwise / counterclockwise rotation of the upper joint relative to the lower joint to complete the predetermined action.

[0032] In the specific implementation of this embodiment, the skid seat 8 includes two left and right seats, which are respectively connected to the two ends of the middle skid seat 5 through pin ear plates.

[0033] During the specific implementation of this embodiment, a set of pipe column supports 1 of the intermediate skid seat 5 is installed at one end of the intermediate skid seat moving pulley 23 to assist in positioning the spin buckle assembly to straighten the drill string; another set of pipe column supports 1 is installed on one side of the clamping tongs of the upper and lower breakaway assembly to assist in straightening the drill string.

[0034] The left and right skids are each provided with a pipe column support 1 at the far end connected to the middle skid, and another pipe column support is provided 5 meters away from the far end pipe column support. The pipe column support can be adjusted in height by a screw nut adjustment device 11, and can be fine-tuned in the left and right directions by a V-shaped adjustment roller 12.

[0035] Therefore, according to the embodiments of the present invention, power is provided by a drilling rig integrated hydraulic station or a dedicated hydraulic station for pipe automation, and the clamping pliers cooperate with the punching pliers to complete the large-torque unbuckling and fixed-torque tightening of the double-root pipe strings in the horizontal direction, and the positioning spindle assembly cooperates with the clamping pliers to complete the small-torque rapid spindle of the drill bit in the horizontal direction, thereby realizing horizontal offline root establishment, and the ground root establishment operation and drilling operation do not interfere with each other, and the automatic control process is simple and easy to operate; the derrick has no second-layer platform, the base has no root box and the high-altitude suspended pipe laying machine, so high-altitude operations are avoided and inherent safety is achieved; the skid-mounted horizontal double-root connection device has a wide range of use, a reasonable structural design, and the whole machine works stably and reliably.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A skid-mounted horizontal double-root connection device for a land oil drilling rig, characterized in that: include: An intermediate skid seat (5), wherein skid seats (8) are provided at both ends of the intermediate skid seat (5), and pipe column supports (1) for placing drill pipes are provided at both ends of the skid seat (8), a translation pulley assembly (2) is provided on one end of the intermediate skid seat (5), and an upper shackle assembly support (4) is fixedly provided on the other end; A top-and-bottom tie-down assembly (9), the top-and-bottom tie-down assembly (9) being arranged on a top-and-bottom tie-down assembly support (4) and being used to fix a drill rod to be connected thereto; A positioning spindle assembly (10), wherein the positioning spindle assembly (10) is arranged on a translation pulley assembly (2), and the translation pulley assembly (2) is used to transport another drill rod to be connected to a docking position with the other drill rod to be connected, connect them through the positioning spindle assembly (10), and lock them by spindle.

2. The skid-mounted horizontal double-root connection device for land oil drilling rigs according to claim 1 is characterized in that: The translation pulley assembly (2) comprises a translation guide rail (21), a translation oil cylinder (22) and a movable pulley (23). The translation guide rail (21) is arranged on the intermediate skid seat (5). The movable pulley (23) is provided with rollers and can move horizontally along the translation guide rail (21). The extension or retraction of the translation oil cylinder (22) drives the movable pulley (23) to move forward and backward along the translation guide rail (21).

3. The skid-mounted horizontal double-root connection device for land oil drilling rigs according to claim 2 is characterized in that: The translation guide rail (21) and the intermediate skid seat (5) are detachably positioned and connected.

4. The skid-mounted horizontal double-root connection device for land oil drilling rigs according to claim 2 is characterized in that: The translation oil cylinder (21) has a built-in displacement sensor for accurately controlling the extension and retraction stroke of the oil cylinder.

5. The skid-mounted horizontal double-root connection device for land oil drilling rigs according to claim 2 is characterized in that: The positioning buckle assembly (10) is detachably connected to the moving pulley (23) via a positioning buckle assembly buffer frame (3).

6. The skid-mounted horizontal double-root connection device for land oil drilling rigs according to claim 1 is characterized in that: The positioning spindle assembly (10) comprises a clamping arm (103), a hydraulic motor (105) and a spindle wheel assembly (106); the clamping arm (103) is mounted on a mounting seat (101), and a guide rod (102) is provided between the clamping arms (103); the clamping arm (103) is tightened or loosened by telescoping a clamping hydraulic oil cylinder (104); the spindle wheel assembly (106) is arranged at a clamping end of the clamping arm (103); the hydraulic motor (105) rotates to drive the friction spindle of the spindle wheel assembly (106) to clamp the drill rod; and after the pre-tightening load is reached, the hydraulic motor (105) stops rotating and opens the clamping arm (103) to complete the spindle operation; when detaching the screw, the positioning spindle assembly (100) clamps the drill tool and rotates in the opposite direction until the screw thread of the drill tool is completely unscrewed.

7. The skid-mounted horizontal double-root connection device for land oil drilling rigs according to claim 1 is characterized in that: The make-up and break-out assembly (9) comprises a clamp (91), a punch clamp (92) and a tightening hydraulic cylinder (93); the clamp (91) is used to clamp the female joint of the drilling tool; the punch clamp (92) is used to clamp the male joint of the drilling tool; and tightening is performed by rotating the tightening hydraulic cylinder (93) around the drilling tool.

8. The skid-mounted horizontal double-root connection device for a land oil drilling rig according to claim 1, wherein the skid seat (8) is connected to both ends of the middle skid seat (5) through pin ear plates.

9. According to the skid-mounted horizontal double-root connection device for a land oil drilling rig as claimed in claim 1, the pipe column support (1) comprises a screw nut adjustment device (11) arranged at both ends of the skid seat (8), the screw nut adjustment device (11) close to one end of the translation pulley assembly (2) is used to assist the positioning spindle assembly to straighten the drill pipe, and the screw nut adjustment device (11) close to one end of the make-up and break-out assembly (9) is used to assist the make-up and break-out assembly to straighten the drill column.

10. The skid-mounted horizontal double-root connection device for land oil drilling rigs according to claim 9, characterized in that: A V-shaped adjusting roller (12) for conveying a drill rod is provided on the top of the lead screw nut adjusting device (11).

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