Automatic rotary drilling device for minor repair operation for automation of oilfield workover operation and workover rig

Abstract

The utility model relates to the field of oil field minor repair operation equipment, and discloses a minor repair operation automatic rotation drilling device and a workover rig for oil field workover operation automation, the device comprises a double-arm lifting ring, a side swing oil cylinder, a frame, a single-arm lifting ring, a turnover oil cylinder, a power elevator and a bearing sealing mechanism; the bearing sealing mechanism comprises a suspension nut, a bearing connecting assembly, a bearing sealing rotating assembly and a guiding piece which are sequentially connected from top to bottom. The bearing and connecting assembly comprises a faucet suspension, a faucet bearing component, a protective sleeve and a faucet lower connecting piece. The bearing sealing rotating assembly comprises an outer frame, a bearing sealing block, a left hydraulic cylinder and a right hydraulic cylinder. Through reasonable design of the whole set of device, unmanned special operation procedures such as sand washing, plug drilling and milling are realized; reliable and quick connection of the pipe column is realized by adopting relative rotation of a split type hydraulic oil channel and an embracing sealing type sealing bearing technology.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield minor repair operation equipment field, concretely relates to a minor repair operation automatic rotation drilling device for oilfield workover operation automation and workover rig. BACKGROUND

[0002] The foreign minor repair operation adopts the way of water faucet to establish a water circulation channel, adopts the way of rotary drive to drive the torque to complete the process of special operation, and the process of connecting the oil pipe and the drilling process has the problems of more workers (3 people), high labor intensity, high safety risk and the like.

[0003] The domestic traditional minor repair operation has two ways, one is the operation mode of water faucet and hydraulic clamp cooperation, this mode is widely applied, adopts the way of single root to establish a water circulation channel, realizes the rotary drilling through the way of increasing two tail ropes by the hydraulic clamp, and completes the special operation in the circulation and replacement mode, also has the problems of more workers (3 people), high labor intensity, low work efficiency, poor operation effect, high safety risk and the like. The other way is to complete the process of special operation by the way of power water faucet, that is, to establish the condition of vertical make-up through the mouse hole, to manually connect the oil pipe and the power water faucet with rotary driving capacity to establish the water circulation channel, and to carry out the fishing and plug drilling operation through the flexible guide device to bear the counter torque of the power water faucet, this mode is less applied, this mode has the advantages of relatively small labor intensity and low safety risk, but also has the requirement of drilling the mouse hole near the wellhead, brings certain workload and the risk of drilling the pipe manifold. In other words, the oilfield minor repair operation is relatively complex, including about 20 kinds of operation processes such as pipe inspection, plug drilling, fishing and the like, has more processes, including dozens of processes such as pipe lifting, sand washing, well circulation and the like, the current minor repair operation automation equipment can complete the automatic pipe lifting process, but cannot solve the automation construction of the special operation processes such as sand washing, plug drilling, milling and the like, and still needs manual completion. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects of the prior art, the utility model provides a minor repair operation automatic rotation drilling device for oilfield workover operation automation and workover rig, and the technical scheme is as follows:

[0005] The utility model provides a kind of workover operation automation for oil field workover operation automatic rotating device, which is connected to travelling block hook and tubing;The device includes double-arm sling, side swing cylinder, frame, single-arm sling, turnover cylinder, power elevator and load sealing mechanism, the upper end of double-arm sling is connected to travelling block hook, and the lower end is connected to frame, single-arm sling is connected with frame by shaft and suspends power elevator, one end of side swing cylinder is connected to frame, and the other end is connected to single-arm sling, one end of turnover cylinder is connected to single-arm sling, and the other end is connected to power elevator, and load sealing mechanism is suspended in the middle of frame;The load sealing mechanism includes suspension nut, load connection assembly, load sealing rotating assembly and guide in sequence, suspension nut step is suspended on frame, and load connection assembly is connected with hose.

[0006] Further, the load connection assembly includes faucet suspension, faucet load component, sheath and faucet lower connecting piece, the upper end of faucet suspension is installed with suspension nut, and the lower end is connected with faucet load component by thread, the faucet suspension is provided with side pipe connected with hose, the inner cavity of faucet load component is communicated with the inner cavities of side pipe and faucet suspension, the upper end of sheath is installed on the periphery of faucet load component by upper bearing, and the lower end is sleeved on the periphery of faucet lower connecting piece, the inner part of sheath is sequentially installed with main load bearing and lower bearing on the periphery of faucet load component, and the inner cavity of faucet lower connecting piece is communicated with the inner cavity of faucet load component.

[0007] Further, a spring ring is installed below the upper bearing on the periphery of faucet load component.

[0008] Further, an upper sealing element is installed between the faucet suspension and the faucet load component.

[0009] Further, a lower sealing element is installed between the faucet load component and the faucet lower connecting piece.

[0010] Further, the load sealing rotating assembly includes outer frame, load sealing block, left hydraulic cylinder and right hydraulic cylinder, the upper and lower ends of outer frame are connected with faucet lower connecting piece and guide respectively, the load sealing block is installed in the middle of the inner cavity of outer frame in embracing state, and the left and right hydraulic cylinders are installed on the left and right sides of load sealing block.

[0011] Further, the load sealing block includes load block, longitudinal sealing element and transverse sealing element installed below the load block.

[0012] Further, the bearing sealing mechanism further comprises a hydraulic oil passage, which comprises an axial oil inlet channel and an axial oil return channel arranged on the outer wall of the faucet bearing part, and an annular oil inlet channel and an annular oil return channel arranged on the outer wall of the faucet lower connecting piece, the upper end of the annular oil inlet channel is communicated with the axial oil inlet channel, the lower end is connected with the oil inlet ports of the left hydraulic cylinder and the right hydraulic cylinder through a hydraulic pipeline, and the upper end of the annular oil return channel is communicated with the axial oil return channel, and the lower end is connected with the oil return ports of the left hydraulic cylinder and the right hydraulic cylinder through a hydraulic pipeline.

[0013] A combined workover rig comprises a tire type workover rig, a self-backing derrick matched with the tire type workover rig, a matched pump truck, an automatic hose reel device, a pipe conveying and discharging machine and the small repair work automatic rotary drilling device for oilfield workover operation automation.

[0014] Further, the automatic hose reel device comprises a base, a roller support, a roller, a power component and an adjustable clutch, the roller support is fixed on the base, the roller is installed on the roller support, the hose is wound on the discharge groove on the roller, one side of the roller is provided with a hose fixing port connected with the hose quick plug connector of the pump truck, and the adjustable clutch controls the power component to rotate the roller to realize the winding and unwinding of the hose.

[0015] Compared with the prior art, the utility model mainly has the following beneficial technical effects:

[0016] 1. The whole device is reasonably designed, and the special operation process is automatically completed, so that the special operation process is realized without people.

[0017] 2. The utility model adopts the relative rotation of the split hydraulic oil passage and the sealing bearing technology, realizes the reliable and rapid connection of the pipe column by matching the automatic lifting function of the hydraulic clamp.

[0018] 3. The utility model is especially suitable for oilfield small repair operation, and solves the automation construction of sand washing, plug drilling, milling and other special operation processes. DRAWINGS

[0019] Figure 1 It is a small repair work automatic rotary drilling device assembly schematic view of the utility model;

[0020] Figure 2 It is a small repair work automatic rotary drilling device structure layout schematic view of the utility model;

[0021] Figure 3 It is a bearing sealing mechanism assembly schematic view of the utility model;

[0022] Figure 4The utility model discares a bearing connection assembly structure schematic drawing.

[0023] Figure 5 The utility model discares a bearing seal rotary assembly structure schematic drawing.

[0024] Figure 6 The utility model discares a bearing seal block structure schematic drawing.

[0025] Figure 7 The utility model discares a combined well repair machine layout schematic drawing.

[0026] Figure 8 The utility model discares an automatic water hose device structure schematic drawing.

[0027] In the drawing: 1 - the hook of the travelling block, 2 - the automatic rotary drilling device of minor repair operation, 3 - the oil pipe, 4 - the double-arm lifting ring, 5 - the side swing cylinder, 6 - the frame, 7 - the bearing seal mechanism, 8 - the single-arm lifting ring, 9 - the turnover cylinder, 10 - the power lifting clamp, 11 - the suspension nut, 12 - the bearing connection assembly, 13 - the bearing seal rotary assembly, 14 - the guide, 15 - the water faucet suspension, 16 - the upper seal piece, 17 - the water faucet bearing part, 18 - the side pipe, 19 - the upper bearing, 20 - the spring ring, 21 - the main bearing, 22 - the lower bearing, 23 - the lower seal piece, 24 - the water faucet lower connecting piece, 25 - the axial oil inlet passage, 26 - the axial oil return passage, 27 - the sheath, 28 - the annular oil return passage, 29 - the annular oil inlet passage, 30 - the outer frame, 31 - the right hydraulic cylinder, 32 - the bearing seal block, 33 - the left hydraulic cylinder, 34 - the bearing block, 35 - the longitudinal seal piece, 36 - the transverse seal piece, 37 - the self-back type derrick, 38 - the tire type well repair machine, 39 - the pump truck, 40 - the automatic water hose device, 41 - the delivery and discharge pipe machine, 42 - the water hose, 43 - the roller, 44 - the roller support, 45 - the base, 46 - the adjustable clutch, 47 - the water hose fixed mouth, 48 - the power component. DETAILED DESCRIPTION

[0028] The utility model will be described in detail below in combination with the embodiment and the drawing. Embodiment 1

[0029] Reference Figures 1 to 8The utility model provides a kind of workover operation automation for oil field minor repair operation automatic rotating drilling device, which is connected with travelling block 1 and oil pipe 3; the device includes double-arm sling 4, side swing cylinder 5, frame 6, single-arm sling 8, turnover cylinder 9, power elevator 10 and bearing sealing mechanism 7, the upper end of double-arm sling 4 is connected with travelling block 1, and the lower end is connected with frame 6, single-arm sling 8 is connected with frame 6 by shaft and suspends power elevator 10, one end of side swing cylinder 5 is connected with frame 6, and the other end is connected with single-arm sling 8, one end of turnover cylinder 9 is connected with single-arm sling 8, and the other end is connected with power elevator 10, and bearing sealing mechanism 7 is suspended in the middle of frame 6; bearing sealing mechanism 7 includes suspension nut 11, bearing connection assembly 12, bearing sealing rotating assembly 13 and guide 14 connected in sequence, suspension nut 11 is stepped suspended on frame 6, and bearing connection assembly 12 is connected with hose 42; through the extension and contraction of side swing cylinder 5, the side swing action of power elevator 10 is completed; through the extension and contraction of turnover cylinder 9, the turnover action of power elevator 10 is completed. Example 2

[0030] Referring to Figures 1 to 8 A kind of workover operation automation for oil field minor repair operation automatic rotating drilling device is disclosed, which is based on the technical solutions described in Example 1, bearing connection assembly 12 includes faucet suspension 15, faucet bearing part 17, sheath 27 and faucet lower connecting piece 24, the upper end of faucet suspension 15 is installed with suspension nut 11, and the lower end is connected with faucet bearing part 17 by thread, faucet suspension 15 is provided with side pipe 18 connected with hose 42, the inner cavity of faucet bearing part 17 is communicated with the inner cavity of side pipe 18 and faucet suspension 15 respectively, the upper end of sheath 27 is installed on the periphery of faucet bearing part 17 by upper bearing 19, and the lower end is sleeved on the periphery of faucet lower connecting piece 24, the inside of sheath 27 is sequentially installed with main bearing 21 and lower bearing 22 on the periphery of faucet bearing part 17, and the inner cavity of faucet lower connecting piece 24 is communicated with the inner cavity of faucet bearing part 17.Spring ring 20 is installed on the periphery of faucet bearing part 17 below upper bearing 19, and the elastic reaction force of spring ring 20 can effectively prevent axial movement and improve stability.Upper sealing element 16 is installed between faucet suspension 15 and faucet bearing part 17, and lower sealing element 23 is installed between faucet bearing part 17 and faucet lower connecting piece 24. Example 3

[0031] Referring to Figures 1 to 8An oilfield workover operation automation minor repair operation automatic rotating drilling device, based on the technical solution described in embodiment 2, the bearing sealing rotating assembly 13 includes an outer frame 30, a bearing sealing block 32, a left hydraulic cylinder 33 and a right hydraulic cylinder 31, the upper and lower ends of the outer frame 30 are respectively connected with the faucet lower connecting piece 24 and the guide piece 14, the guide piece 14 plays a guiding role when the oil pipe 3 enters the cavity inside the bearing sealing rotating assembly 13; the bearing sealing block 32 is installed in the middle part of the inner cavity of the outer frame 30 in an embracing state, and the left hydraulic cylinder 33 and the right hydraulic cylinder 31 are installed on the left and right sides of the bearing sealing block 32. The bearing sealing block 32 includes a bearing block 34, a longitudinal sealing element 35 and a transverse sealing element 36 installed below the bearing block 34. Embodiment 4

[0032] Referring to Figures 1 to 8 An oilfield workover operation automation minor repair operation automatic rotating drilling device, based on the technical solution described in embodiment 3, the bearing sealing mechanism 7 further includes a hydraulic oil passage, which includes an axial oil inlet passage 25 and an axial oil return passage 26 arranged on the outer wall of the faucet bearing part 17, and an annular oil inlet passage 29 and an annular oil return passage 28 arranged on the outer wall of the faucet lower connecting piece 24, the upper end of the annular oil inlet passage 29 is connected with the axial oil inlet passage 25, and the lower end is connected with the oil inlet ports of the left hydraulic cylinder 33 and the right hydraulic cylinder 31 through a hydraulic pipeline, and the upper end of the annular oil return passage 28 is connected with the axial oil return passage 26, and the lower end is connected with the oil return ports of the left hydraulic cylinder 33 and the right hydraulic cylinder 31 through a hydraulic pipeline. The overall design of the hydraulic oil passage ensures that the sheath 27, the faucet lower connecting piece 24 and the bearing sealing rotating assembly 13 rotate synchronously without rotating the faucet bearing part 17, and the hydraulic pipeline does not rotate relative to the left hydraulic cylinder 33 and the right hydraulic cylinder 31, which ensures that the hydraulic pipeline is stretched and is not damaged by winding.

[0033] The faucet suspension 15 and the faucet bearing part 17 are non-fixed and non-moving parts, and the other parts of the bearing connecting assembly 12 are rotating parts. The power hydraulic pipeline is connected with the oil inlet ports of the left hydraulic cylinder 33 and the right hydraulic cylinder 31 in the bearing sealing rotating assembly 13 through the annular oil inlet passage 29 in the faucet lower connecting piece 24 after entering the annular oil inlet passage 29 in the faucet lower connecting piece 24 from the axial oil inlet passage 25 on the outer wall of the faucet bearing part 17, and the outlet position of the faucet lower connecting piece 24, and the outlet position of the faucet lower connecting piece 24 is connected with the hydraulic pipeline, which realizes the relative rotation technology of the hydraulic oil passage. Embodiment 5

[0034] Referring to Figures 1 to 8The combined workover rig comprises a tire type workover rig 38, a self-backing derrick 37 matched with the tire type workover rig 38, a matched pump truck 39, an automatic hose reel device 40, a pipe conveying and discharging machine 41 and the automatic rotating running-in device for small repair work of oilfield workover operation as described in the above embodiment. The pump truck 39 is connected with the automatic hose reel device 40 through a hose 42, and the automatic rotating running-in device 2 is connected with the self-backing derrick 37 through the traveling block hook 1. The automatic hose reel device 40 comprises a base 45, a drum support 44, a drum 43, a power component 48 and an adjustable clutch 46. The drum support 44 is fixed on the base 45, the drum 43 is installed on the drum support 44, the hose 42 is wound on the discharging groove of the drum 43 (to prevent the hose 42 from being disordered when being reeled), and the drum 43 is provided with a hose fixing port 47 connected with the hose quick connector of the pump truck 39 (the hose fixing port 47 is fixed when the hose 42 is reeled and unreeled). The adjustable clutch 46 controls the power component 48 to rotate the drum 43 and realize the reeling and unreeeling of the hose 42.

[0035] In order for those skilled in the art to better understand the present application, the basic working process and principles thereof are briefly introduced as follows:

[0036] The tubing 3 is conveyed to the wellhead position by the pipe conveying and discharging machine 41, the power elevator clamp 10 is opened, the pipe conveying and discharging machine 41 continues to push the tubing 3, the power elevator clamp 10 is closed, the lower end surface of the tubing 3 joint is on the upper end surface of the power elevator clamp 10, the traveling block hook 1 is lifted to the vertical state of the tubing 3, the automatic rotating running-in device 2 centers the tubing 3 on the wellhead, the traveling block hook 1 is lowered to make the tubing 3 butt joint with the tubing in the well, and the automatic rotating running-in device 2 is made up to butt joint the tubing 3 with the tubing in the wellhead. Through the retraction of the left hydraulic cylinder 33 and the right hydraulic cylinder 31, the movement of the load bearing sealing block 32 is controlled to be opened, the space is avoided, and the tubing 3 enters the cavity of the load bearing sealing rotating assembly 13; through the extension of the left hydraulic cylinder 33 and the right hydraulic cylinder 31, the movement of the load bearing sealing block 32 is controlled to be closed, the traveling block hook 1 is lifted, the lower end surface of the tubing 3 joint falls on the upper end surface of the load bearing sealing block 32, and the load bearing sealing block 32 plays a load bearing sealing role. The pump truck 39 conveys water through the hose 42, the water source enters the faucet load bearing component 17 through the hollow part of the faucet suspension 15, enters the load bearing sealing rotating assembly 13 through the hollow part of the faucet lower connector 24, and then enters the tubing 3. The upper sealing element 16 and the lower sealing element 23 can prevent the water source from overflowing. The slips are opened, the hydraulic clamp clamps the tubing 3, rotates and falls, and realizes special operation procedures such as sand washing, plug drilling and milling. When the tubing 3 falls to the position of the previous tubing in the wellhead, the slips are closed, the pump truck 39 stops conveying, and the next cycle begins.

Claims

1. A workover operation automation for oilfield workover operation automatic rotating drilling device, which is connected with a traveling block at the top and connected with a tubing at the bottom, characterized in that, The device comprises a double-arm sling, a side swing oil cylinder, a frame, a single-arm sling, a turnover oil cylinder, a power lifting clamp and a load sealing mechanism, the upper end of the double-arm sling is connected with a traveling block hook, the lower end is connected with the frame, the single-arm sling is connected with the frame by a shaft and suspends the power lifting clamp, one end of the side swing oil cylinder is connected with the frame, the other end is connected with the single-arm sling, one end of the turnover oil cylinder is connected with the single-arm sling, the other end is connected with the power lifting clamp, and the load sealing mechanism is suspended in the middle of the frame.

2. The workover operation automation for oilfield workover operation automatic workover operation automatic rotating running device according to claim 1, characterized in that, The load sealing mechanism comprises a suspension nut, a load connection assembly, a load sealing rotating assembly and a guide piece which are connected in sequence from top to bottom, and the suspension nut is suspended on the frame.

3. The workover operation automation for oilfield workover operation automatic workover operation automatic rotating running device according to claim 2, characterized in that, The load connection assembly comprises a faucet suspension, a faucet load component, a sheath and a faucet lower connecting piece, the upper end of the faucet suspension is installed with the suspension nut, the lower end is connected with the faucet load component through threads, the faucet suspension is provided with a side pipe connected with the water hose, the inner cavity of the faucet load component is communicated with the inner cavities of the side pipe and the faucet suspension, the upper end of the sheath is installed on the periphery of the faucet load component through an upper bearing, the lower end is sleeved on the periphery of the faucet lower connecting piece, the inner part of the sheath is installed with a main load bearing and a lower bearing in sequence from top to bottom on the periphery of the faucet load component, and the inner cavity of the faucet lower connecting piece is communicated with the inner cavity of the faucet load component.

4. The workover operation automation for oilfield workover operation automation with a workover operation automatic rotating running-in device, according to claim 2, characterized in that, A spring ring is installed below the upper bearing on the periphery of the faucet load component.

5. The workover operation automation for oilfield workover operation automation with a workover operation automatic rotating running-in device, according to claim 2, characterized in that, An upper sealing piece is installed between the faucet suspension and the faucet load component.

6. The workover operation automation for oilfield workover operation automation with a workover operation automatic rotating running-in device, according to claim 2, characterized in that, A lower sealing piece is installed between the faucet load component and the faucet lower connecting piece.

7. The automatic rotary drilling device for minor repair operations in oilfield well workover as described in claim 6, characterized in that, The load sealing rotating assembly comprises an outer frame, a load sealing block, a left hydraulic cylinder and a right hydraulic cylinder, the upper and lower ends of the outer frame are connected with the faucet lower connecting piece and the guide piece respectively, the load sealing block is installed in the inner cavity of the outer frame in an embracing state, and the left and right hydraulic cylinders are installed on the left and right sides of the load sealing block.

8. The workover operation automation for oilfield workover operation automation, according to claim 6, characterized in that, The load sealing block comprises a load block, a longitudinal sealing piece and a transverse sealing piece which are installed on the lower part of the load block.

9. A combined workover rig comprising a tire-based workover rig and a self-backing derrick attached thereto, characterized in that, The load sealing mechanism further comprises a hydraulic oil channel which comprises an axial oil inlet channel and an axial oil return channel arranged on the outer wall of the faucet load component and an annular oil inlet channel and an annular oil return channel arranged on the outer wall of the faucet lower connecting piece, the upper end of the annular oil inlet channel is communicated with the axial oil inlet channel, the lower end is connected with the oil inlets of the left and right hydraulic cylinders through a hydraulic pipeline, the upper end of the annular oil return channel is communicated with the axial oil return channel, and the lower end is connected with the oil outlets of the left and right hydraulic cylinders through a hydraulic pipeline. The device further comprises a matched pump truck, an automatic water hose collecting and releasing device, a pipe conveying and discharging machine and the automatic rotating drilling device for small repair operation of the oil field workover operation automation as claimed in any one of claims 1-8, the pump truck is connected with the automatic water hose collecting and releasing device through a water hose, the automatic rotating drilling device for small repair operation is connected with a self-backing derrick through a traveling block hook, and the pipe conveying and discharging machine pushes the oil pipe to the lower part of the automatic rotating drilling device for small repair operation.

10. The combination well repair machine of claim 9, wherein, The automatic water hose winding and unwinding device comprises a base, a roller support, a roller, a power component and an adjustable clutch, the roller support is fixed on the base, the roller is installed on the roller support, the water hose is wound on a discharging groove on the roller, one side of the roller is provided with a water hose fixing port connected with a quick connector of a pump truck, and the adjustable clutch controls the power component to rotate the roller to realize winding and unwinding of the water hose.

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