Low-position three-joint unit discharging device capable of being moved in wheel mode and discharging method

Abstract

The low-position three-joint unit arranging device comprises a three-joint unit table, a vertical pipe arranging mechanical arm is installed on a guide rail in the middle of the three-joint unit table, three-joint unit boxes are symmetrically arranged on the two sides of the three-joint unit table, four hydraulic cylinders are evenly distributed at the bottom end of the three-joint unit table, and the front side and the rear side of the bottom of the three-joint unit table are connected with moving assemblies through pin shafts. A tubular column conveyor is arranged on the front side of the three-joint unit table; the iron roughneck is arranged on the surface of the drill floor; the mouse hole is formed in front of the center of a wellhead; the invention further discloses a discharging method. According to the discharging method, after the three-joint table is moved through the hydraulic cylinder and the moving assembly, the pipe column conveyor is used for conveying a single pipe to a mouse hole; a single unit is lifted through a lower supporting clamp, meanwhile, the other single units are conveyed through a tubular column conveyor, and the single units are combined into a three-joint unit through an iron roughneck; and after the three-joint unit is lifted to leave the mouse hole, the three-joint unit rotates towards the three-joint unit box on one side, and the three-joint unit is arranged in the three-joint unit box. The discharging device solves the problems that in the prior art, during moving operation, a built three-joint unit is detached into single units, so that the operation period is short, and the efficiency is low.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil drilling machinery, and specifically relates to a low-position standpipe discharging device that can be transported by wheels, and also relates to a low-position standpipe discharging method that can be transported by wheels. Background Art

[0002] With the rapid development of domestic oil rig automation technology, the requirements for the high efficiency, safety, and reliability of rigs are getting higher and higher. At present, the standpipe boxes of the vast majority of oil rigs are installed on the drill floor, and the built standpipes are discharged into the standpipe boxes by the mast crane. The problems and defects of this discharging method are as follows:

[0003] 1. The mast crane is arranged dozens of meters above the ground, which has the problems of inconvenient high-altitude maintenance operations and a relatively high risk coefficient for personnel working at high altitudes.

[0004] 2. The standpipes are discharged at a high position on the drill floor, which requires a relatively high stability of the rig derrick; and because the standpipe box occupies a relatively large space, it causes a large defect in the external shape design of the drill floor.

[0005] 3. During each moving operation, the built standpipes need to be disassembled into single pipes and dropped for transportation, and when drilling the next well, the standpipes need to be re-established, which is time-consuming and laborious. Summary of the Invention

[0006] The purpose of the present invention is to provide a low-position standpipe discharging device that can be transported by wheels, which solves the problem of low operation cycle and efficiency caused by disassembling the built standpipes into single pipes during the moving operation in the prior art.

[0007] Another purpose of the present invention is to provide a low-position standpipe discharging method that can be transported by wheels.

[0008] One solution of the present invention is a low-position standpipe discharging device that can be transported by wheels, including a standpipe platform, a vertical pipe discharging manipulator is installed on the guide rail in the middle of the standpipe platform, standpipe boxes are symmetrically arranged on both sides of the standpipe platform, four hydraulic cylinders are evenly distributed at the bottom end of the standpipe platform, wheel sets are connected to the front and rear sides of the bottom of the standpipe platform through pin shafts, and a pipe string conveyor is arranged on the front side of the standpipe platform; it also includes an iron roughneck arranged on the drill floor surface and a mousehole in front of the center of the wellhead.

[0009] The characteristics of the present invention also lie in that

[0010] The vertical pipe row manipulator includes a moving component, a slewing component, and a first telescopic arm arranged in sequence from bottom to top. One end of the first telescopic arm away from the slewing component is connected to an adjusting lead screw, the adjusting lead screw is connected to a sub-arm, the sub-arm is slidably connected to a main arm, the bottom end of the main arm is equipped with a second telescopic arm, one end of the second telescopic arm away from the main arm is connected to a lower holding clamp, the top end of the main arm is equipped with a telescopic component, the bottom end of the telescopic component is connected to an upper clamping clamp, and the moving component is connected to the stand pipe platform;

[0011] A moving guide rail is arranged on the sub-arm, and the sub-arm and the main arm are slidably connected through the guide rail;

[0012] The stand pipe platform is located on the horizontal foundation surface in front of the drill rig base;

[0013] The pipe string conveyor includes a pulley block, and a centralizing arm is hinged to the end of the pulley block.

[0014] Another solution of the present invention is a low-position stand pipe discharging method that can be wheel-transported, which is implemented according to the following steps:

[0015] Step 1: Move the stand pipe platform through the hydraulic cylinder and the wheel set, and then use the pipe string conveyor to transport the first single pipe to the mouse hole;

[0016] Step 2: Lift the first single pipe through the lower holding clamp. At the same time, use the pipe string conveyor to transport the second single pipe. The iron roughneck combines the first single pipe and the second single pipe into a double pipe, then the lower holding clamp lifts the double pipe, uses the pipe string conveyor to transport the third single pipe, and the iron roughneck combines the double pipe and the third single pipe into a stand pipe;

[0017] Step 3: Lift the stand pipe to leave the mouse hole through the vertical pipe row manipulator, then drive the vertical pipe row manipulator to rotate towards the side stand pipe box and discharge the stand pipe into the stand pipe box to complete the discharge of the stand pipe.

[0018] Another feature of another solution of the present invention is that,

[0019] Step 1 is specifically implemented according to the following steps:

[0020] Step 1.1: Use the tractor to move the stand pipe platform to the horizontal foundation surface in front of the drill rig base through the hydraulic cylinder and the wheel set;

[0021] Step 1.2: The pipe string conveyor transports the first single pipe to the lower part of the mouse hole on the drill floor and centralizes it into the mouse hole.

[0022] Step 2 is specifically implemented according to the following steps:

[0023] Step 2.1: The lower holding clamp extends, latches the first single pipe, then the lower holding clamp moves upward to lift the first single pipe above the drill floor. At the same time, the pipe string conveyor transports and centralizes the second single pipe into the mouse hole;

[0024] Step 2.2: The lower supporting tongs lower the first single pipe to align and contact the female thread of the second single pipe. The iron roughneck makes up the connection, and the first single pipe and the second single pipe are combined into a double pipe; the mousehole holds the double pipe, the lower supporting tongs release the double pipe and retract, and move down to the drill floor.

[0025] Step 2.3: After the lower supporting tongs extend and clasp the second single pipe in the double pipe, it moves upward until it leaves the mousehole. The pipe string conveyor conveys and straightens the third single pipe into the mousehole.

[0026] Step 2.4: The lower supporting tongs lower the double pipe to align and contact the female thread of the third single pipe. The iron roughneck makes up the connection, and the double pipe and the third single pipe are combined into a standpipe.

[0027] Step 3 is specifically implemented according to the following steps:

[0028] Step 3.1: The upper clamping tongs and the lower supporting tongs extend simultaneously to clamp the standpipe and then start to move upward, lifting the standpipe until it leaves the mousehole.

[0029] Step 3.2: The moving assembly controls the movement forward of the rig. The upper clamping tongs and the lower supporting tongs retract simultaneously, the main arm moves downward, and the slewing assembly drives the rotation towards the standpipe rack on one side.

[0030] Step 3.3: The upper clamping tongs and the lower supporting tongs extend simultaneously to clamp the standpipe and place it into the standpipe rack and then retract, completing the discharge of the standpipe.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. The discharge device of the present invention adopts a low-position standpipe discharge, which will not affect the stability of the derrick, reduces the design difficulty of the derrick, and the pipe handling manipulator is also arranged at a low position, which is convenient for maintenance and reduces the high-altitude safety risk of maintenance personnel during operation.

[0033] 2. The discharge device of the present invention can realize independent standpipe building and discharging, that is, the standpipe building does not occupy the center of the wellhead, improving the drilling operation efficiency.

[0034] 3. The discharge device of the present invention can share a set of pipe string conveyors among multiple rigs, without each rig being equipped with a pipe string conveyor, reducing the production cost of drilling operations.

[0035] 4. The discharge device of the present invention greatly reduces the drilling operation cycle. In areas without transportation height restrictions, during the moving operation, the built standpipes can be transported as a whole with the standpipe platform, without disassembling them into single pipes for transportation. This not only saves the time for disassembling into single pipes and the time for building standpipes for the next well, but also reduces the number of moving vehicle trips. Brief Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the low-position standpipe discharge device of the present invention that can be transported by wheels.

[0037] Figure 2 It is a structural schematic diagram of a vertical pipe-laying manipulator in a discharge device of the present invention;

[0038] Figure 3 It is a schematic diagram of the arrangement of the discharge device of the present invention;

[0039] Figure 4 It is a schematic flow diagram of the discharge method of the present invention;

[0040] Figure 5 It is a schematic diagram of combining a single connection into a double connection in the discharge method of the present invention;

[0041] Figure 6 It is a schematic diagram of the vertical pipe laying robot in the discharge method of the present invention discharging to one side of the root box.

[0042] In the figure, 1. stand platform, 2. vertical pipe laying manipulator, 201. moving assembly, 202. rotating assembly, 203. first telescopic arm, 204. adjusting screw, 205. auxiliary arm, 206. main arm, 207. second telescopic arm, 208. lower supporting clamp, 209. telescopic assembly, 210. upper clamping clamp, 3. stand box, 4. hydraulic cylinder, 5. wheel set, 6. iron roughneck, 7. pipe column conveyor, 701. pulley, 702. straightening arm, 8. rat hole. DETAILED DESCRIPTION

[0043] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Example 1

[0045] The present invention discloses a low-position standpipe discharge device which can be transported by wheels, such as Figure 1 As shown, it includes a pipe stand 1, a vertical pipe laying manipulator 2 is installed on the guide rail in the middle of the pipe stand 1, and the vertical pipe laying manipulator 2 is connected and installed with the guide rail in the middle of the pipe stand 1. The vertical pipe laying manipulator 2 can move forward and backward along the guide rail in the direction to the wellhead. Pipe boxes 3 are symmetrically arranged on both sides of the pipe stand 1 for storing the built pipes. Four hydraulic cylinders 4 are evenly distributed at the bottom of the pipe stand 1 for lifting the pipe stand 1 as a whole. The front and rear sides of the bottom of the pipe stand 1 are connected with wheel groups 5 through pin shafts, and the pipe stand 1 is transported as a whole by a tractor. Figure 3 As shown, a pipe conveyor 7 is arranged at the front side of the pipe stand 1. The pipe conveyor 7 includes a pulley 701, and a straightening arm 702 is hinged at the end of the pulley 701. The pulley 701 is used to convey a single pipe, and the straightening arm 702 is used to straighten the single pipe; it also includes an iron roughneck 6 arranged on the surface of the drilling platform and a rat hole 8 in front of the center of the wellhead. The pipe stand 1 is located on the horizontal foundation surface in front of the drilling rig base.

[0046] like Figure 2As shown in the figure, the vertical pipe row manipulator 2 includes a moving component 201, a slewing component 202, and a first telescopic arm 203 arranged in sequence from bottom to top. One end of the first telescopic arm 203 away from the slewing component 202 is connected with an adjusting lead screw 204, and the adjusting lead screw 204 can adjust the sub-arm 205 to keep it vertical. The adjusting lead screw 204 is connected with the sub-arm 205, the sub-arm 205 is slidably connected with the main arm 206, the bottom end of the main arm 206 is provided with a second telescopic arm 207, one end of the second telescopic arm 207 away from the main arm 206 is connected with a lower holding clamp 208, and the second telescopic arm 207 controls the extension and retraction of the lower holding clamp 208. The top end of the main arm 206 is provided with a telescopic component 209, the bottom end of the telescopic component 209 is connected with an upper clamping clamp 210, the telescopic component 209 drives the upper clamping clamp 210 to extend and retract, the upper clamping clamp 210 can clamp various types of pipe columns, and the lower holding clamp 208 can buckle and hold various types of pipe columns.

[0047] The moving group 201 is connected to the standpipe platform 1. A moving guide rail is arranged on the sub-arm 205, and the sub-arm 205 is slidably connected with the main arm 206 through the guide rail. The moving component 201 and the slewing component 202 can drive the vertical pipe row manipulator 2 to move back and forth along the track of the standpipe platform 1 and drive the whole vertical pipe row manipulator 2 to rotate.

[0048] As Figure 4 shown, the present invention discloses a method for low-position standpipe discharging that can be transported by wheels, which is specifically implemented according to the following steps:

[0049] Step 1: Move the standpipe platform 1 through the hydraulic cylinder 4 and the wheel set 5, and then use the pipe column conveyor 7 to transport the first single pipe to the mouse hole 8.

[0050] Step 1.1: Use the tractor to move the standpipe platform 1 to the horizontal foundation surface in front of the drill rig base through the hydraulic cylinder 4 and the wheel set 5.

[0051] Step 1.2: The pipe column conveyor 7 transports the first single pipe to the lower part of the mouse hole 8 on the drill floor and straightens it into the mouse hole 8.

[0052] As Figure 5 shown, Step 2: Lift the first single pipe by the lower holding clamp 208. At the same time, use the pipe column conveyor 7 to transport the second single pipe. The iron roughneck 6 combines the first single pipe and the second single pipe into a double pipe, then the lower holding clamp 208 lifts the double pipe, uses the pipe column conveyor 7 to transport the third single pipe, and the iron roughneck 6 combines the double pipe and the third single pipe into a standpipe.

[0053] Step 2.1: The lower holding clamp 208 extends, buckles the first single pipe, then the lower holding clamp 208 moves upward to lift the first single pipe above the drill floor. At the same time, the pipe column conveyor 7 transports and straightens the second single pipe into the mouse hole 8.

[0054] Step 2.2: The lower support tong 208 lowers the first single pipe to align and contact the female thread of the second single pipe. The iron roughneck 6 makes up the connection, and the first single pipe and the second single pipe are connected and combined into a double pipe. The mousehole 8 grips the double pipe. The lower support tong 208 releases the double pipe and retracts, then moves downward to the drill floor surface.

[0055] Step 2.3: After the lower support tong 208 extends and latches, the second single pipe in the double pipe moves upward to leave the mousehole 8. The pipe string conveyor 7 conveys and straightens the third single pipe into the mousehole 8.

[0056] Step 2.4: The lower support tong 208 lowers the double pipe to align and contact the female thread of the third single pipe. The iron roughneck 6 makes up the connection, and the double pipe and the third single pipe are connected and combined into a standpipe.

[0057] As Figure 6 shown, in Step 3: The vertical pipe handling manipulator 2 lifts the standpipe to leave the mousehole 8, then drives the vertical pipe handling manipulator 2 to rotate towards the side standpipe box 3 and discharges the standpipe into the standpipe box 3, completing the discharge of the standpipe.

[0058] Step 3.1: The upper clamping tong 210 and the lower support tong 208 extend simultaneously to grip the standpipe and then start to move upward, lifting the standpipe to leave the mousehole 8.

[0059] Step 3.2: The moving component controls the movement towards the front of the rig. The upper clamping tong 210 and the lower support tong 208 retract simultaneously, the main arm 206 moves downward, and the slewing component 202 drives the rotation towards the side standpipe box 3.

[0060] Step 3.3: The upper clamping tong 210 and the lower support tong 208 extend simultaneously to grip the standpipe and place it into the standpipe box 3 and then retract, completing the discharge of the standpipe.

[0061] Embodiment 2

[0062] This embodiment discloses a low-position standpipe discharging device that can be transported by wheels, including a standpipe platform 1. A vertical pipe handling manipulator 2 is installed on the guide rail in the middle of the standpipe platform 1. Standpipe boxes 3 are symmetrically arranged on both sides of the standpipe platform 1. Four hydraulic cylinders 4 are evenly distributed at the bottom end of the standpipe platform 1. Wheel sets 5 are connected to the front and rear sides of the bottom of the standpipe platform 1 through pin shafts. A pipe string conveyor 7 is arranged on the front side of the standpipe platform 1. It also includes an iron roughneck 6 arranged on the drill floor surface and a mousehole 8 in front of the center of the wellhead.

[0063] Embodiment 3

[0064] On the basis of Example 2, the vertical pipe laying manipulator 2 includes a moving assembly 201, a rotating assembly 202 and a first telescopic arm 203 arranged in sequence from bottom to top, the first telescopic arm 203 is connected to an adjusting screw 204 at one end away from the rotating assembly 202, the adjusting screw 204 is connected to a secondary arm 205, the secondary arm 205 is slidably connected to a main arm 206, a second telescopic arm 207 is installed at the bottom end of the main arm 206, a lower supporting clamp 208 is connected to one end of the second telescopic arm 207 away from the main arm 206, a telescopic assembly 209 is installed at the top end of the main arm 206, an upper clamp 210 is connected to the bottom end of the telescopic assembly 209, and the moving assembly 201 is connected to the root stand 1. A moving guide rail is arranged on the secondary arm 205, and the secondary arm 205 is slidably connected to the main arm 206 through the guide rail. The root stand 1 is located on the horizontal foundation surface in front of the drilling rig base. The pipe column conveyor 7 comprises a pulley 701 , at the end of which a straightening arm 702 is hingedly connected.

Claims

1. Wheel-mounted low-position standpipe discharging device, Characterized in that, It includes a standpipe table (1), on the guide rail in the middle of the standpipe table (1), a vertical pipe arranging manipulator (2) is installed, on both sides of the standpipe table (1), standpipe boxes (3) are symmetrically arranged, at the bottom end of the standpipe table (1), four hydraulic cylinders (4) are evenly distributed, at the front and back sides of the bottom of the standpipe table (1), a wheel set (5) is connected by a pin shaft, and a pipe string conveyor (7) is arranged on the front side of the standpipe table (1); It also includes an iron roughneck (6) arranged on the surface of the drill floor and a mousehole (8) in front of the wellhead center.

2. The wheel-mounted low-position standpipe discharging device according to claim 1, Characterized in that, The vertical pipe arranging manipulator (2) includes a moving component (201), a slewing component (202) and a first telescopic arm (203) arranged in sequence from bottom to top. At one end of the first telescopic arm (203) far from the slewing component (202), an adjusting lead screw (204) is connected. The adjusting lead screw (204) is connected with a sub-arm (205). The sub-arm (205) is slidably connected with a main arm (206). At the bottom end of the main arm (206), a second telescopic arm (207) is installed. At one end of the second telescopic arm (207) far from the main arm (206), a lower holding clamp (208) is connected. At the top end of the main arm (206), a telescopic component (209) is installed. At the bottom end of the telescopic component (209), an upper clamping clamp (210) is connected. The moving component (201) is connected with the standpipe table (1).

3. The wheel-mounted low-position standpipe discharging device according to claim 2, Characterized in that, A moving guide rail is arranged on the sub-arm (205), and the sub-arm (205) is slidably connected with the main arm (206) through the guide rail.

4. The wheel-mounted low-position standpipe discharging device according to claim 1, Characterized in that, The standpipe table (1) is located on the horizontal foundation surface in front of the drill rig base.

5. The wheel-mounted low-position standpipe discharging device according to claim 1, Characterized in that, The pipe string conveyor (7) includes a pulley (701), and a centralizing arm (702) is hinged at the end of the pulley (701).

6. Wheel-mounted low-position standpipe discharging method, Characterized in that, This method uses the wheel-mounted low-position standpipe discharging device described in any one of claims 1-5, and is implemented according to the following steps: Step 1: Move the standpipe table (1) through the hydraulic cylinder (4) and the wheel set (5), and then use the pipe string conveyor (7) to transport the first single pipe into the mousehole (8); Step 2: Lift the first single pipe by the lower holding clamp (208). At the same time, use the pipe string conveyor (7) to transport the second single pipe. The iron roughneck (6) combines the first single pipe and the second single pipe into a double pipe, and then the lower holding clamp (208) lifts the double pipe. Use the pipe string conveyor (7) to transport the third single pipe. The iron roughneck (6) combines the double pipe and the third single pipe into a standpipe; Step 3: After lifting the standpipe to leave the mousehole (8) by the vertical pipe rack manipulator (2), drive the vertical pipe rack manipulator (2) to rotate towards the side standpipe box (3) and discharge the standpipe into the standpipe box (3), thus completing the discharge of the standpipe.

7. The wheeled-transportable low-position standpipe discharging method according to claim 6, characterized in that, Step 1 is specifically implemented according to the following steps: Step 1.1: Use a tractor to move the standpipe platform (1) to the horizontal foundation surface in front of the drill rig base through the hydraulic cylinder (4) and the wheel set (5); Step 1.2: The pipe string conveyor (7) transports the first single pipe to the lower part of the mousehole (8) on the drill floor and aligns it correctly into the mousehole (8).

8. The wheeled-transportable low-position standpipe discharging method according to claim 6, characterized in that, Step 2 is specifically implemented according to the following steps: Step 2.1: The lower holding tongs (208) extend, after clamping the first single pipe, the lower holding tongs (208) move upward to lift the first single pipe above the drill floor. At the same time, the pipe string conveyor (7) transports and aligns the second single pipe correctly into the mousehole (8); Step 2.2: The lower holding tongs (208) lower the first single pipe to align and contact the female thread of the second single pipe, and the iron roughneck (6) makes up the connection to combine the first single pipe and the second single pipe into a double pipe; the mousehole (8) clamps the double pipe, the lower holding tongs (208) release the double pipe and retract, and move downward to the drill floor; Step 2.3: After the lower holding tongs (208) extend and clamp the second single pipe in the double pipe and move upward to leave the mousehole (8), the pipe string conveyor (7) transports and aligns the third single pipe correctly into the mousehole (8); Step 2.4: The lower holding tongs (208) lower the double pipe to align and contact the female thread of the third single pipe, and the iron roughneck (6) makes up the connection to combine the double pipe and the third single pipe into a standpipe.

9. The wheeled-transportable low-position standpipe discharging method according to claim 6, characterized in that, Step 3 is specifically implemented according to the following steps: Step 3.1: The upper clamping tongs (210) and the lower holding tongs (208) extend simultaneously to clamp the standpipe and then start to move upward to lift the standpipe to leave the mousehole (8); Step 3.2: The moving assembly controls to move forward towards the drill rig. The upper clamping tongs (210) and the lower holding tongs (208) retract simultaneously, the main arm (206) moves downward, and the slewing assembly (202) drives to rotate towards the side standpipe box (3); Step 3.3: The upper clamping tongs (210) and the lower holding tongs (208) extend simultaneously to clamp the standpipe and place it into the standpipe box (3) and then retract, thus completing the discharge of the standpipe.

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