Wellhead single-person operation pipe and rod integrated tripping device and technology thereof

Abstract

The invention relates to a wellhead single-person operation pipe and rod integrated tripping device and a process thereof, and belongs to the technical field of oil field workover treatment. Comprising a lorry-mounted overturning platform installed at the tail of an oil field workover rig, a heightening flange penetrates through the lorry-mounted overturning platform, the upper end of the heightening flange is connected with a hydraulic chuck, and the lower end of the heightening flange is connected with a blowout preventer and a four-way valve; the hydraulic clamp is connected with the derrick through a lifting rope and is suspended above the vehicle-mounted overturning platform; the other end of the lifting ring is connected with a hook of an oil field workover rig; the mechanical arm is installed at one end of the pipe and rod conveyor, the small tackle is installed above the pipe and rod conveyor, the PLC is used for controlling the pipe and rod conveyor and the hydraulic chuck, and the small tackle can move along a sliding way on the pipe and rod conveyor. The lifting operation is completed by three persons and one machine, so that the labor cost and the labor intensity of workers are reduced, the potential safety hazard is reduced, and the working efficiency of petroleum workers is improved at the same time.

Description

Technical Field

[0001] The invention relates to a wellhead single-person operated pipe-rod integrated tripping and lowering device and a process thereof, belonging to the technical field of oilfield well repairing operations. Background Art

[0002] At present, the pipe raising and lowering operations in routine minor repairs are generally carried out in a "four-person-one-machine" operation mode, in which two people at the wellhead are responsible for removing and hanging the lifting rings and lifting the lifting cards to ensure the pipe raising and lowering operations. The wellhead operations are labor-intensive and have a low safety factor. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention discloses a wellhead single-operated pipe-rod integrated lifting and lowering device and a process thereof. Mechanized equipment is applied and operated by a single person at the wellhead, and the lifting and lowering operations are completed by "three people to one machine", which greatly reduces the on-site labor costs and the labor intensity of the workers, reduces safety hazards, and improves the work efficiency of oil workers.

[0004] The technical scheme adopted by the present invention is: a wellhead single-operated pipe-rod integrated lifting and lowering device, which comprises a vehicle-mounted turning platform, an oilfield workover rig, a heightening flange, a hydraulic chuck, a hydraulic clamp, a turning elevator, a pipe-rod conveyor and a PLC controller; the vehicle-mounted turning platform is installed at the rear of the oilfield workover rig, the heightening flange runs through the vehicle-mounted turning platform, the upper end of the heightening flange is connected to the hydraulic chuck, and the lower end of the heightening flange is connected to the blowout preventer and the four-way valve in sequence; the hydraulic clamp is connected to the derrick through a lifting rope and is suspended above the vehicle-mounted turning platform; the turning elevator is connected to a lifting ring, and the other end of the lifting ring is connected to a hook of the oilfield workover rig; a manipulator is installed at one end of the pipe-rod conveyor, a small pulley is installed above the pipe-rod conveyor, the PLC controller is used to control the pipe-rod conveyor and the hydraulic chuck, and the small pulley can move along a slideway on the pipe-rod conveyor.

[0005] The moving direction of the small pulley is perpendicular or parallel to the body of the oilfield workover rig.

[0006] The present invention also provides a single-operated pipe-rod integrated tripping and lowering process at the wellhead, in which three operators cooperate with each other to complete the operation of lifting or lowering the pipe-rod, wherein the team leader is responsible for standing at the wellhead, and is mainly responsible for the operation of putting on and breaking off the pipe-rod by operating the hydraulic clamp, the operator is responsible for lifting and lowering the hook, and controlling the operation of the flip elevator and the hydraulic chuck respectively by operating the operation panel and the PLC controller, and the site worker is mainly responsible for the operation of the pipe-rod conveyor and the alignment of the pipe-rod, so as to realize the single-operation at the wellhead. This tripping and lowering process includes the process of lifting the pipe-rod and the process of lowering the pipe-rod, and the specific process of lifting the pipe-rod is:

[0007] Step 1: lower the flip elevator, close the flip elevator to clamp the pipe rod when the flip elevator contacts the pipe rod, open the hydraulic chuck, and lift the pipe rod;

[0008] Step 2: After the coupling is lifted out of the wellhead hydraulic chuck, the hydraulic chuck is closed; the hydraulic pliers are pushed to perform the breaker operation;

[0009] Step 3: After the shackle is removed, lift the pipe rod away from the coupling, push the pipe rod into the manipulator, control the pipe rod conveyor slide to the lifting position, and the manipulator sends the tail of the pipe rod to the small pulley at the front end of the pipe rod conveyor slide, lower the pipe rod, and then control the small pulley to move along the slide to the rear of the pipe rod conveyor;

[0010] Step 4: When the flip elevator is lowered to the appropriate position, operate the manipulator to support the pipe rod, operate the flip elevator to open, control the manipulator to place the pipe rod on the pipe rod conveyor slide, the slide falls, and the manipulator takes the pipe rod out of the slide and places it on the pipe bridge for storing the pipe rod, completing the pipe rod lifting process.

[0011] The specific process of lowering the pipe rod is as follows:

[0012] Step 1: Operate the manipulator to deliver the pipe rod to the pipe rod conveyor slideway, control the pipe rod conveyor slideway to lift, the manipulator props up the pipe rod on the slideway, controls the flip elevator to flip, and lowers it to the predetermined area;

[0013] Step 2: Control the small pulley to move forward, close the flip elevator to clamp the pipe rod, lift the pipe rod, and the manipulator takes the pipe rod and sends it to the wellhead;

[0014] Step 3: Fasten the pipe rod, push the hydraulic clamp to fasten it, lift the pipe rod, open the hydraulic chuck, lower the pipe rod to the place where the coupling is to be connected, close the hydraulic chuck, flip the elevator to open it, and complete the pipe rod lowering process.

[0015] The present invention discloses a wellhead single-operated integrated pipe-rod lifting and lowering device and a process thereof, which has the beneficial effect that the team leader is responsible for standing at the wellhead and is mainly responsible for the pipe-rod buckling and undocking operations by operating the hydraulic pliers, the operator is responsible for lifting and lowering the hook and controlling the operation of the flip elevator and the hydraulic chuck by operating the operation panel, and the site worker is mainly responsible for the operation of the pipe-rod conveyor and the pipe-rod aligning work, thus realizing single-person operation at the wellhead and completing the lifting and lowering operations with "three persons to one machine", which not only reduces the labor cost and the labor intensity of the workers, but also reduces the safety hazards, and at the same time improves the work efficiency of the oil workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 Shown is a schematic diagram of the on-site arrangement of the present invention;

[0018] Figure 2 Shown is a flow chart of lowering pipe rods in the process of the present invention;

[0019] Figure 3 Shown is a flow chart of pipe lifting in the process of the present invention.

[0020] As shown in the figure: 1. Oilfield workover rig; 2. Truck-mounted turning platform; 3. Heightening flange; 4. Blowout preventer; 5. Four-way valve; 6. Manipulator; 7. Pipe and rod conveyor; 8. Hook; 9. Lifting ring; 10. Turning elevator; 11. Hydraulic clamp; 12. Hydraulic chuck; 13. Small pulley.

[0021] Specific implementation methods

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In order to further understand the content of the present invention, the present invention is further described below in conjunction with specific implementation methods.

[0024] Example 1: Figures 1 to 3 As shown, a single-operated pipe-rod integrated lifting and lowering process at the wellhead requires three operators to cooperate with each other to complete the operation of the whole machine. The team leader is responsible for standing at the wellhead and is mainly responsible for the operation of making and breaking the pipe rods by operating the hydraulic clamp 11. The operator is responsible for lifting and lowering the hook 8 and controlling the operation of the flip elevator 10 and the hydraulic chuck 12 respectively by operating the operation panel and the PLC controller. The site worker is mainly responsible for the operation of the pipe-rod conveyor 7 and the alignment of the pipe rods, so as to realize single-person operation at the wellhead. This lifting and lowering process includes the pipe-rod lifting process and the pipe-rod lowering process.

[0025] When it is necessary to lift the pipe rod, first, the operator lowers the flip elevator 10, and when the flip elevator 10 contacts the pipe rod, closes the flip elevator 10 to clamp the pipe rod, opens the hydraulic chuck 12, and lifts the pipe rod. When the coupling is lifted out of the wellhead hydraulic chuck 12, the operator closes the hydraulic chuck 12; the team leader pushes the hydraulic pliers 11 to perform the breaker operation. After breaker, the operator lifts the pipe rod away from the coupling, and the team leader pushes the pipe rod into the manipulator 6. The site worker controls the slide of the pipe rod conveyor 7 to the lifting position, and the manipulator 6 will The tail of the pipe rod is sent to the small pulley 13 at the front end of the slideway of the pipe rod conveyor 7. The operator lowers the pipe rod, and then the small pulley 13 moves along the slideway to the rear of the pipe rod conveyor 7. When the flip elevator 10 is lowered to a suitable position, the site worker operates the manipulator 6 to support the pipe rod, and the operator operates the flip elevator 10 to open. The site worker controls the manipulator 6 to place the pipe rod on the slideway of the pipe rod conveyor 7. The slideway falls, and the manipulator 6 takes the pipe rod out of the slideway and places it on the pipe bridge for storing the pipe rods, completing the pipe rod lifting process.

[0026] The suitable position is 0.5 to 1 m above the hydraulic chuck 12 .

[0027] When it is necessary to lower the pipe rod, the site worker operates the manipulator 6 to send the pipe rod to the slide of the pipe rod conveyor 7, controls the slide of the pipe rod conveyor 7 to lift, the manipulator 6 props up the pipe rod on the slide, the operator controls the flip elevator 10 to flip, and lowers it to the predetermined area, the site worker controls the small pulley 13 to move to the front section, the operator closes the flip elevator 10 to clamp the pipe rod, lifts the pipe rod, the manipulator 6 receives the pipe rod and sends it to the wellhead, then the team leader takes the pipe rod for buckling, pushes the hydraulic clamp 11 for buckling, the operator lifts the pipe rod, opens the hydraulic chuck 12, and then lowers the pipe rod to the place to be connected, closes the hydraulic chuck 12, opens the flip elevator 10, and completes the pipe rod lowering process.

[0028] The predetermined area is 0.5 to 1 m above the hydraulic chuck 12 .

[0029] The location to be connected is 0.3 to 0.5 m above the hydraulic chuck 12 .

[0030] The one-person-operated integrated pipe-rod lifting and lowering process at the wellhead is carried out by means of a pipe-rod lifting and lowering device, which includes a vehicle-mounted turning platform 2, an oilfield workover rig 1, a heightening flange 3, a hydraulic chuck 12, a hydraulic clamp 11, a turning elevator 10, a pipe-rod conveyor 7 and a PLC controller. The vehicle-mounted turning platform 2 is installed at the tail of the oilfield workover rig 1. The heightening flange 3 penetrates the vehicle-mounted turning platform 2, the upper end of the heightening flange 3 is connected to the hydraulic chuck 12, and the lower end of the heightening flange 3 is connected to the blowout preventer 4 and the four-way valve 5 in sequence. The hydraulic clamp 11 is connected to the derrick through a lifting rope and is suspended above the vehicle-mounted turning platform 2. The turning elevator 10 is connected to the lifting ring 9, and the other end of the lifting ring 9 is connected to the hook 8 of the oilfield workover rig 1. The manipulator 6 is installed at one end of the pipe-rod conveyor 7, and the small pulley 13 is installed above the pipe-rod conveyor 7. The PLC controller is used to control the pipe-rod conveyor 7 and the hydraulic chuck 12. Under the command of the PLC controller, the small pulley 13 can move along the slideway on the pipe-rod conveyor 7. According to the actual situation on site, when the pipe-rod conveyor 7 and the oilfield well repair rig 1 are parked, the moving direction of the small pulley 13 is required to be perpendicular or parallel to the body of the oilfield well repair rig 1. In this embodiment, the moving direction of the small pulley 13 and the body of the oilfield well repair rig 1 are on the same straight line, that is, the moving trajectory of the small pulley 13 coincides with the center line of the body of the oilfield well repair rig 1, which is convenient for operators to carry out construction and improves construction efficiency. During the construction process, according to the needs of on-site construction, the vehicle-mounted flip platform 2 can move in the vertical direction to adjust the height, or it can be flipped 90° and fixed at the tail of the oilfield well repair rig 1.

[0031] The vehicle-mounted flip platform 2 is suitable for supporting and collecting fluids during operation, reduces pollution, and has multi-directional adjustment and flipping functions. When in use, the operator uses the hydraulic system to adjust the platform up and down when the wellhead is centered. The vehicle-mounted flip platform 2 can be flipped to the rear of the oilfield workover rig 1 and transported with the oilfield workover rig 1. The hydraulic clamp 11 is used to disassemble the pipe rod. The site worker remotely controls the hydraulic drive through the PLC controller to clamp the hydraulic chuck 12 used to clamp the pipe rod in the well.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wellhead single-operated pipe-rod integrated tripping device, characterized in that: The invention comprises a vehicle-mounted turning platform (2), an oilfield workover rig (1), a heightening flange (3), a hydraulic chuck (12), a hydraulic clamp (11), a turning elevator (10), a pipe-rod conveyor (7) and a PLC controller; the vehicle-mounted turning platform (2) is installed at the rear of the oilfield workover rig (1), the heightening flange (3) passes through the vehicle-mounted turning platform (2), the upper end of the heightening flange (3) is connected to the hydraulic chuck (12), and the lower end of the heightening flange (3) is connected to the blowout preventer (4) and the four-way valve (5) in sequence; the hydraulic clamp (11) is installed at the rear of the oilfield workover rig (1), the heightening flange (3) passes through the vehicle-mounted turning platform (2), the upper end of the heightening flange (3) is connected to the hydraulic chuck (12), and the lower end of the heightening flange (3) is connected to the blowout preventer (4) and the four-way valve (5) in sequence; 11) is connected to the derrick through a lifting rope and is suspended above the vehicle-mounted turning platform (2); the turning lifting card (10) is connected to the lifting ring (9), and the other end of the lifting ring (9) is connected to the hook (8) of the oilfield well repair machine (1); the manipulator (6) is installed at one end of the pipe-rod conveyor (7), and the small pulley (13) is installed above the pipe-rod conveyor (7). The PLC controller is used to control the pipe-rod conveyor (7) and the hydraulic chuck (12), and the small pulley (13) can move along the slideway on the pipe-rod conveyor (7).

2. The wellhead single-operated pipe-rod integrated tripping and lowering device according to claim 1, characterized in that: The moving direction of the small pulley (13) is perpendicular or parallel to the body of the oilfield workover rig (1).

3. The wellhead single-operated pipe-rod integrated tripping and lowering device according to claim 1, characterized in that: The vehicle-mounted turning platform (2) can move in the vertical direction.

4. A tripping process using the wellhead single-operated pipe-rod integrated tripping device according to claim 1, characterized in that: It includes pipe-rod lifting process and pipe-rod lowering process.

5. The wellhead single-operated pipe-rod integrated tripping process according to claim 4 is characterized in that: The specific process of lifting pipe rod is as follows: Step 1: lower the flip elevator (10), close the flip elevator (10) to clamp the pipe rod when the flip elevator (10) contacts the pipe rod, open the hydraulic chuck (12), and lift the pipe rod; Step 2: After the coupling is taken out from the wellhead hydraulic chuck (12), the hydraulic chuck (12) is closed; and the hydraulic clamp (11) is pushed to perform a breaker operation; Step 3: After the shackle is removed, the pipe rod is lifted up and separated from the coupling, and the pipe rod is pushed and placed in the manipulator (6), and the slideway of the pipe rod conveyor (7) is controlled to the lifting position. The manipulator (6) delivers the tail of the pipe rod to the small pulley (13) at the front end of the slideway of the pipe rod conveyor (7), lowers the pipe rod, and then controls the small pulley (13) to move along the slideway to the rear of the pipe rod conveyor (7); Step 4: When the flip elevator (10) is lowered to a suitable position, the manipulator (6) is operated to support the pipe rod, the flip elevator (10) is operated to open, and the manipulator (6) is controlled to place the pipe rod on the slide of the pipe rod conveyor (7). The slide falls, and the manipulator (6) takes the pipe rod out of the slide and places it on the pipe bridge for storing the pipe rod, thereby completing the pipe rod lifting process.

6. The wellhead single-operated pipe-rod integrated tripping process according to claim 4 is characterized in that: The specific process of lowering the pipe rod is as follows: Step 1: operate the manipulator (6) to deliver the pipe rod to the slideway of the pipe rod conveyor (7), control the slideway of the pipe rod conveyor (7) to lift, the manipulator (6) props up the pipe rod on the slideway, controls the flip elevator (10) to flip, and lowers it to a predetermined area; Step 2: Control the small pulley (13) to move forward, close the flip elevator (10) to clamp the pipe rod, lift the pipe rod, and the manipulator (6) takes the pipe rod and delivers it to the wellhead; Step 3: buckle the pipe rod, push the hydraulic clamp (11) to buckle it, lift the pipe rod, open the hydraulic chuck (12), lower the pipe rod to the place where the coupling is to be made, close the hydraulic chuck (12), flip the elevator (10) to open it, and complete the pipe rod lowering process.

7. The wellhead single-operated pipe-rod integrated tripping process according to claim 5 is characterized in that: The suitable position is 0.5 to 1 m above the hydraulic chuck (12).

8. The wellhead single-operated pipe-rod integrated tripping process according to claim 6 is characterized in that: The predetermined area is 0.5 to 1 m above the hydraulic chuck (12).

9. The wellhead single-operated pipe-rod integrated tripping process according to claim 6 is characterized in that: The location to be connected is 0.3 to 0.5 m above the hydraulic chuck (12).

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