A blowout preventer skid for coiled tubing equipment

Abstract

This utility model relates to the field of tubing equipment technology, and more particularly to a blowout preventer skid for coiled tubing equipment. The blowout preventer skid for coiled tubing equipment includes a skid base, on which multiple sets of tires for moving the skid base are provided. One end of the skid base is fixedly installed with a towing frame for docking with external towing equipment. The blowout preventer skid for coiled tubing equipment provided by this utility model can be directly docked with an external towing vehicle during transport. By adjusting the tires to support the skid base and separating the bottom of the skid base from the ground, the towing vehicle can tow the entire blowout preventer skid as a whole, eliminating the need for repeated lifting and unloading of transport vehicles and unloading at the well site using a crane. This saves on crane equipment rental and hoisting procedures, reducing field well site construction costs.

Description

Technical Field

[0001] This utility model relates to the field of tubing equipment technology, and in particular to a blowout preventer skid for continuous tubing equipment. Background Technology

[0002] The blowout preventer skid for coiled tubing equipment is a skid-mounted integrated well control support equipment for coiled tubing operations in oil and gas fields. It is a modular set of equipment that integrates components such as blowout preventer, blowout preventer assembly, lifting support mechanism, working platform, and telescopic ladder, with an integral steel skid base frame as the carrier.

[0003] A Chinese patent publication number CN224174030U describes a blowout preventer skid for coiled tubing equipment. According to its description, once the entire blowout preventer skid is assembled, the skid base has no mobility. When transporting and using it, it is necessary to rely on external lifting equipment to hoist the device onto a transport vehicle for transport. After the device is in place at the well site, it is still necessary to use lifting equipment again to hoist it for unloading before operations can begin. The entire transportation and use process is very inconvenient.

[0004] Therefore, it is necessary to provide a new blowout preventer skid for coiled tubing equipment to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a blowout preventer skid for continuous tubing equipment.

[0006] The blowout preventer skid for continuous tubing equipment provided by this utility model includes a skid base, on which multiple sets of tires for moving the skid base are provided, and a traction frame for docking with external traction equipment is fixedly installed at one end of the skid base. The skid is provided with a support frame for supporting the tire. The support frame is fixedly connected to the skid. The support frame is equipped with an adjustment assembly for mounting the tire. The adjustment assembly includes a hydraulic cylinder that drives the vertical height of the tire. The drive end of the hydraulic cylinder is provided with an adapter frame that is fixedly connected to the tire.

[0007] Preferably, a guide frame is fixedly connected to the support frame, and a sliding frame is inserted inside the guide frame. The inside of the sliding frame is fixedly connected to the drive end of the hydraulic cylinder, and the fixing point of the hydraulic cylinder is fixedly connected to the inner top of the support frame. A support plate is fixedly installed on the side wall of the sliding frame, and the inner wall of the support plate is provided with a sliding groove that is slidably connected to the end of the adapter frame.

[0008] Preferably, a fixed plate is installed on the outer wall of the support plate, a guide column is inserted inside the fixed plate, the bottom end of the guide column is fixedly connected to the adapter frame, and a shock absorber is assembled between the adapter frame and the fixed plate.

[0009] Preferably, a side plate is rotatably connected to the side wall of the pry bar via a rotating shaft. A guide block is fixedly installed on the top of the side plate. A slidably connected limit frame is inserted inside the guide block. A through hole is opened at the part of the side plate opposite to the end of the limit frame. A limit hole is opened at the part of the side wall of the pry bar opposite to the through hole, and the inner wall of the limit hole abuts against the end of the limit frame. A motor for driving the side plate is fixedly installed on the pry bar, and the motor is a worm gear self-locking reduction motor.

[0010] Preferably, positioning blocks that abut against the outer wall of the limiting frame are fixedly installed on both sides of the top of the side plate, and a fixedly connected mounting plate is installed at the center of the top of the side plate. Guide rods are fixedly connected on both sides of the top of the mounting plate, and a sliding plate with the same sliding connection is sleeved between the guide rods on both sides. A positioning rod is fixedly installed at the bottom of the sliding plate.

[0011] Preferably, the top of the side plate has multiple positioning holes, which are distributed along the sliding trajectory of the limiting frame, and the inner wall of the positioning hole abuts against the end of the positioning rod.

[0012] Preferably, a spring is sleeved on the outside of the guide rod, the bottom end of the spring is fixedly connected to the top of the sliding plate, and the top end of the spring is fixedly connected to the top end of the guide rod.

[0013] Compared with related technologies, the blowout preventer skid for coiled tubing equipment provided by this utility model has the following advantages: 1. The front end of the skid of this utility model is equipped with a traction frame, which can be directly connected to an external tractor in the case of transportation. By adjusting the tires, the skid is supported by the adjustment component, so that the bottom of the skid is separated from the ground. The tractor can then drag the entire blowout preventer skid as a whole, eliminating the need for repeated lifting and unloading of the transport vehicle and unloading at the well site by a crane. This saves on the rental of lifting equipment and the hoisting process, reduces the construction cost at the field well site, and avoids the safety hazards of bumping into the high-pressure blowout preventer cylinder during lifting. The transportation operation is more flexible and convenient. 2. When this utility model is in operation, the hydraulic cylinder retracts and drives the tire to retract upward and completely detach from the ground. The complete bottom surface of the skid seat directly contacts the ground to bear the load. At the same time, the side plates on both sides flip outward and unfold. The side plates are locked and fixed by the limit frame, which greatly expands the contact area between the skid seat and the ground, disperses the working load at the wellhead, and avoids local settlement and slippage of the skid seat. Therefore, it can improve the support stability of the entire set of equipment during operation. 3. The shock absorber installed between the tire adapter frame and the fixed plate of this utility model can buffer the vibration and impact caused by road bumps during transportation, reduce the structural wear caused by vibration on the blowout preventer and skid frame, and extend the service life of the equipment. Attached Figure Description

[0014] Figure 1A schematic diagram of a preferred embodiment of the blowout preventer skid for coiled tubing equipment provided by this utility model; Figure 2 for Figure 1 The diagram shows the structural connection between the support frame and the adjustment assembly. Figure 3 for Figure 1 A structural schematic diagram of the side plate and its components is shown; Figure 4 for Figure 2 The diagram shows a partial unfolded structure of the support frame and adjustment components.

[0015] The following are the labeling elements in the diagram: 1. Skid; 11. Traction frame; 2. Tire; 3. Support frame; 31. Guide frame; 4. Adjustment assembly; 41. Hydraulic cylinder; 42. Sliding frame; 43. Support plate; 431. Fixing plate; 432. Guide column; 44. Adapter frame; 45. Shock absorber; 5. Side plate; 51. Through hole; 52. Guide block; 53. Positioning hole; 54. Positioning block; 6. Limiting frame; 7. Mounting piece; 71. Guide rod; 711. Spring; 72. Sliding piece; 721. Positioning rod. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0018] Please see Figures 1 to 4 The present invention provides a blowout preventer skid for a continuous tubing equipment. The blowout preventer skid for a continuous tubing equipment includes a skid base 1. The skid base 1 is provided with multiple sets of tires 2 for moving the skid base 1, and a traction frame 11 for docking with an external traction device is fixedly installed at one end of the skid base 1. The skid base 1 is formed by welding double-layer I-beams, with lifting lugs reserved at the four corners. The bottom is a complete and flat load-bearing surface. The front end is integrally welded with a traction frame 11. The traction frame 11 has traction pin holes for connecting to the hook of the tractor vehicle. The top surface of the skid base 1 has reserved standardized bolt holes. Existing conventional double vertical blowout preventer support frame and anti-slip operating platform can be directly bolted without modifying the upper well control supporting structure, making it highly versatile.

[0019] In the embodiments of this utility model, please refer to Figures 1 to 4The skid 1 is provided with a support frame 3 for supporting the tire 2. The support frame 3 is fixedly connected to the skid 1. The support frame 3 is equipped with an adjustment component 4 for mounting the tire 2. The adjustment component 4 includes a hydraulic cylinder 41 that drives the vertical height of the tire 2. The drive end of the hydraulic cylinder 41 is provided with a transfer frame 44 that is fixedly connected to the tire 2. The support frame 3 is equipped with a fixedly connected guide frame 31. A sliding frame 42 is inserted inside the guide frame 31 and is fixedly connected to the drive end of the hydraulic cylinder 41. The fixing point of the hydraulic cylinder 41 is fixedly connected to the inner top of the support frame 3. A support plate 43 is fixedly installed on the side wall of the sliding frame 42, and the inner wall of the support plate 43 is provided with a sliding groove that is slidably connected to the end of the transfer frame 44.

[0020] It should be noted that when the device needs to be transferred, the hydraulic cylinder 41 is activated to extend. The extended hydraulic cylinder 41 will push the sliding frame 42 to slide downward inside the guide frame 31. During this process, the support plate 43 can drive the adapter frame 44 and tire 2 to move downward. When the tire 2 touches the ground, its reverse force can lift the entire skid 1 off the ground. Then the traction frame 11 can be connected to an external tractor. After connection, the entire skid can be moved by the tractor, thus realizing the flexible transfer of the device without the need for additional hoisting equipment to lift and transfer the device. During the extension of the hydraulic cylinder 41, the cooperation between the guide frame 31 and the sliding frame 42 can limit the lifting trajectory of the tire 2 and prevent deviation and jamming during the lifting process. In an optional implementation: during the control of the lifting and lowering of the tire 2, multiple hydraulic cylinders 41 can be controlled to extend / retract synchronously, thereby uniformly controlling the lifting and lowering of all tires 2. The synchronous action of multiple hydraulic cylinders 41 ensures that the skid 1 is horizontal and does not tilt during the lifting and lowering process. At the same time, the sliding cooperation between the guide column 432 and the fixed plate 431 during use can bear the lateral force of the tire 2 and reduce the radial load of the hydraulic cylinder 41. Furthermore, the hydraulic circuits of multiple hydraulic cylinders 41 are equipped with a flow divider and combiner valve synchronous circuit. The oil outlet of the hydraulic pump station is connected to the oil inlet of the flow divider and combiner valve. The multiple oil outlets of the flow divider and combiner valve correspond to the rodless chambers of each group of hydraulic cylinders 41. The oil from the rod chambers of the hydraulic cylinders 41 flows back to the oil tank. By evenly dividing the flow, all hydraulic cylinders 41 can extend and retract synchronously, avoiding the tilting and jamming of the skid 1 caused by the asynchronous lifting of the tires 2.

[0021] In the embodiments of this utility model, please refer to Figures 1 to 4 A fixed plate 431 is installed on the outer wall of the support plate 43. A sliding guide column 432 is inserted inside the fixed plate 431. The bottom end of the guide column 432 is fixedly connected to the adapter frame 44. A shock absorber 45 is installed between the adapter frame 44 and the fixed plate 431.

[0022] It should be noted that: through the assembly of the shock absorber 45, the shock absorber 45 can absorb the vertical impact force generated by road bumps during transportation, reduce the vibration transmitted upward to the skid 1, protect the high-pressure blowout preventer cylinder above the skid 1, and reduce fatigue damage to welds and flange connections. Meanwhile, the shock absorber 45 is vertically arranged between the fixed plate 431 and the adapter frame 44, and only bears the vertical vibration load, without interfering with the lifting and sliding action of the guide column 432 and the hydraulic cylinder 41.

[0023] In the embodiments of this utility model, please refer to Figures 1 to 4 A side plate 5 is rotatably connected to the side wall of the pry bar 1 via a rotating shaft. A guide block 52 is fixedly installed on the top of the side plate 5. A slidingly connected limit frame 6 is inserted inside the guide block 52. A through hole 51 is opened on the outer wall of the side plate 5 opposite to the end of the limit frame 6. A limit hole is opened on the side wall of the pry bar 1 opposite to the through hole 51, and the inner wall of the limit hole abuts against the end of the limit frame 6. A motor for driving the side plate 5 is fixedly installed on the pry bar 1. The motor is a worm gear self-locking reduction motor. Two... A positioning block 54 is fixedly installed on the side and abuts against the outer wall of the limiting frame 6. A mounting plate 7 is fixedly connected to the center of the top of the side plate 5. Guide rods 71 ​​are fixedly connected on both sides of the top of the mounting plate 7. A sliding plate 72 with the same sliding connection is sleeved between the two guide rods 71. A positioning rod 721 is fixedly installed at the bottom of the sliding plate 72. Multiple positioning holes 53 are opened on the top of the side plate 5. The positioning holes 53 are distributed along the sliding trajectory of the limiting frame 6, and the inner wall of the positioning hole 53 abuts against the end of the positioning rod 721.

[0024] It should be noted that after the equipment is moved to the required position of the oil well, the hydraulic cylinder 41 can be controlled to retract, so that the tire 2 is separated from the ground. Then the motor is started, and the motor can drive the side plate 5 to flip outward to the horizontal support state. Then the sliding plate 72 can be manually pulled upward to compress the spring 711 and apply a lateral thrust so that the limit frame 6 passes through the through hole 51 and is inserted into the limit hole on the side wall of the skid 1. Then the sliding plate 72 can be released and the spring 711 is pressed down, and the positioning rod 721 is inserted into the corresponding positioning hole 53 to lock the limit frame 6 and prevent the limit frame 6 from sliding off under the action of external force, so that the side plate 5 can be stably unfolded. When the end of the limit frame 6 is inserted into the skid 1, when the side plate 5 provides auxiliary support to the skid 1, the force between the limit frame 6 and the limit hole can prevent the side plate 5 from rotating. This can reduce the force of support transmitted through the side plate 5 to the shaft on which it is installed, so that the shaft bears most of the force of support and causes the shaft to break and be damaged. In this embodiment, the worm gear motor has a power-off self-locking feature. After the side plate 5 is flipped into place, the motor will not rotate on its own when the power supply is stopped, thus preventing the side plate 5 from being randomly unfolded during the folding and transportation process. By setting the positioning block 54, when the limiting frame 6 is pulled outward from inside the limiting hole, the outward sliding trajectory of the limiting frame 6 can be blocked, thus preventing the end of the limiting frame 6 from sliding out and falling off from inside the guide block 52.

[0025] In the embodiments of this utility model, please refer to Figures 1 to 4 A spring 711 is sleeved on the outside of the guide rod 71. The bottom end of the spring 711 is fixedly connected to the top of the sliding piece 72, and the top end of the spring 711 is fixedly connected to the top end of the guide rod 71.

[0026] It should be noted that, through the setting of spring 711, when the side plate 5 is unfolded, spring 711 continuously presses down on the sliding piece 72, so that the positioning rod 721 is always stuck inside the positioning hole 53, preventing the limit frame 6 from freely sliding out of the limit hole, thus ensuring the stability of the locking state of the side plate 5.

[0027] The working principle of the blowout preventer skid for coiled tubing equipment provided by this utility model is as follows: When transferring the device, first control the hydraulic cylinder 41 to extend and drive the tire 2 to push the skid 1 downwards, so that the bottom surface of the skid 1 is completely off the ground. Then connect the towing pin of the tractor to the towing frame 11 at the front end of the skid 1. Rely on the tractor to drag the entire set of blowout preventer skids to move, and can be directly towed to the transport vehicle or wellhead operation position without the need for a crane to lift it. After the device is transported to the required position, the hydraulic cylinder 41 is controlled to retract, driving the tire 2 to fully retract upwards and lift off the ground. The bottom of the skid 1 is fully supported on the ground. Then, the self-locking motors on both sides can be started to drive the side plate 5 to flip outwards and unfold, and the sliding plate 72 is pulled to compress the spring 711, pushing the limit frame 6 into the limit hole of the skid 1. Then, the tension on the sliding plate 72 can be released. At this time, the downward pressure of the spring 711 can make the positioning rod 721 insert into the positioning hole 53 and lock the limit frame 6. The side plate 5 and the bottom surface of the skid 1 are in contact with the ground, increasing the overall grounding area and improving the stability of the operation. Then, the blowout preventer assembly and pressurized operation can be carried out.

[0028] The hydraulic cylinder 41 in this invention is connected to a standard hydraulic system via an external pipeline to achieve its extension and retraction control. The specific setup of this hydraulic system is conventional technology in the field. In addition, the circuit involved in this invention is controlled by a PLC controller. The PLC sends control signals to the motor driver and the hydraulic solenoid valve in sequence according to a preset program to achieve coordinated action between the motor and the hydraulic cylinder 41. The circuit and control involved are all existing technologies and will not be described in detail here.

[0029] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A blowout preventer skid for a continuous tubing system, comprising a skid base (1), wherein the skid base (1) is provided with a plurality of tires (2) for moving the skid base (1), and a traction frame (11) for docking with an external traction device is fixedly installed at one end of the skid base (1). Its features are: The pry bar (1) is provided with a support frame (3) for supporting the tire (2). The support frame (3) is fixedly connected to the pry bar (1). The support frame (3) is equipped with an adjustment assembly (4) for installing the tire (2). The adjustment assembly (4) includes a hydraulic cylinder (41) for driving the vertical height of the tire (2). The driving end of the hydraulic cylinder (41) is provided with a transfer frame (44) fixedly connected to the tire (2).

2. The blowout preventer skid for coiled tubing equipment according to claim 1, characterized in that, A guide frame (31) is fixedly connected to the support frame (3). A sliding frame (42) is inserted inside the guide frame (31). The inside of the sliding frame (42) is fixedly connected to the drive end of the hydraulic cylinder (41). The fixing point of the hydraulic cylinder (41) is fixedly connected to the inner top of the support frame (3). A support plate (43) is fixedly installed on the side wall of the sliding frame (42). The inner wall of the support plate (43) is provided with a sliding groove that is slidably connected to the end of the adapter frame (44).

3. The blowout preventer skid for coiled tubing equipment according to claim 2, characterized in that, A fixed plate (431) is fixedly connected to the outer wall of the support plate (43). A guide column (432) is inserted inside the fixed plate (431). The bottom end of the guide column (432) is fixedly connected to the adapter frame (44). A shock absorber (45) is assembled between the adapter frame (44) and the fixed plate (431).

4. The blowout preventer skid for coiled tubing equipment according to claim 1, characterized in that, A rotatably connected side plate (5) is mounted on the side wall of the pry bar (1) via a rotating shaft. A guide block (52) is fixedly mounted on the top of the side plate (5). A slidingly connected limit frame (6) is inserted inside the guide block (52). A through hole (51) is opened at the opposite part of the outer wall of the side plate (5) and the end of the limit frame (6). A limit hole is opened at the opposite part of the side wall of the pry bar (1) and the through hole (51). The inner wall of the limit hole abuts against the end of the limit frame (6). A motor for driving the side plate (5) is fixedly mounted on the pry bar (1). The motor is a worm gear self-locking reduction motor.

5. The blowout preventer skid for coiled tubing equipment according to claim 4, characterized in that, The side plate (5) is also fixedly installed on both sides of the top, and positioning blocks (54) abut against the outer wall of the limit frame (6). The center of the top of the side plate (5) is fixedly connected to the mounting plate (7). The two sides of the top of the mounting plate (7) are provided with fixedly connected guide rods (71). The two sides of the guide rods (71) are fitted with the same sliding plate (72), and the bottom of the sliding plate (72) is fixedly installed with a positioning rod (721).

6. The blowout preventer skid for coiled tubing equipment according to claim 5, characterized in that, The side plate (5) has multiple positioning holes (53) on its top. The positioning holes (53) are distributed along the sliding trajectory of the limiting frame (6), and the inner wall of the positioning hole (53) abuts against the end of the positioning rod (721).

7. The blowout preventer skid for coiled tubing equipment according to claim 5, characterized in that, A spring (711) is sleeved on the outside of the guide rod (71). The bottom end of the spring (711) is fixedly connected to the top of the sliding piece (72), and the top end of the spring (711) is fixedly connected to the top end of the guide rod (71).

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