Blowout preventer moving and transporting device

Abstract

The invention discloses a blowout preventer moving and transporting device which comprises a transporting frame, and the transporting frame is hinged to an overturning frame assembly used for being connected with a blowout preventer set in the falling-down state and the standing state through a hinge base. The transferring assembly is used for being detachably connected with the blowout preventer set; the guide rail group is connected with the transportation frame and is arranged between a hoisting position of the blowout preventer group and a wellhead position; and the moving and transporting assembly can move along the path of the guide rail group, so that the blowout preventer group is moved and transported to a wellhead position from a hoisting position. The blowout preventer can be directly transported to the position of a wellhead through the blowout preventer moving and transporting device, the problem that the blowout preventer is inconvenient to hoist is solved, and the blowout preventer can be assembled, integrally transported, subjected to pressure testing and installed through the blowout preventer moving and transporting device without being disassembled and assembled for many times.

Description

Technical Field

[0001] The invention relates to the technical field of blowout preventer transportation, in particular to a blowout preventer transportation device. Background Art

[0002] Blowout preventers play a very important role in the field of oil and gas equipment. They are a key part of the well control device of the drilling rig. They control the wellhead pressure during drilling, well repair, oil testing and other operations, effectively preventing the occurrence of blowout accidents, and greatly reducing the risk factor of drilling work. They are a key equipment commonly used in oil and gas fields to prevent blowout accidents.

[0003] In the past, the transportation and installation of BOPs has always been a thorny issue. Each disassembly and installation of a BOP requires a lot of manpower and time, and there are also many difficulties during transportation. For some bases with small clearance height and insufficient operating space, the BOP lifting device cannot lift the BOP as a whole and transfer it to the wellhead. In addition, in some cases, the initial position of the BOP is too far away from the BOP lifting device, and the BOP cannot be lifted vertically at the initial lifting position. The BOP can only be pulled to the wellhead piece by piece through the traveling block hook and assembled and installed at the wellhead. This operation method is not only time-consuming and laborious, but also highly dangerous and easy to damage the BOP. Summary of the invention

[0004] The object of the present invention is to provide a blowout preventer transport device to solve the above-mentioned problems, which can directly transport the blowout preventer to the wellhead position, solve the problem of inconvenient lifting of the blowout preventer, and can assemble, transport, pressure test and install the blowout preventer through the blowout preventer transport device without multiple disassembly and assembly.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A blowout preventer transport device, comprising:

[0007] A transport frame, wherein the transport frame is hingedly connected to a flip frame assembly through an articulated seat for connecting the blowout preventer group in two states: a fallen state and an upright state;

[0008] A transport assembly for detachably connecting the BOP group;

[0009] A guide rail assembly connected to the transport frame and used to be arranged between the lifting position of the blowout preventer assembly and the wellhead position;

[0010] The transport assembly can move along the path of the guide rail group so as to move the blowout preventer group from the lifting position to the wellhead position.

[0011] Optionally, the guide rail set includes a first guide rail and a second guide rail, the first guide rail and the second guide rail are arranged at an angle and have a communication port;

[0012] The blowout preventer transport device further comprises a traction device, at least one traction device is provided, and the traction device is detachably connected to the first guide rail and / or the second guide rail.

[0013] Optionally, the transport assembly includes a moving seat, which is slidably connected to the first guide rail, and the traction device can be detachably connected to the first guide rail and detachably connected to the moving seat.

[0014] Optionally, a guide rail is provided above the movable seat, the extension direction of the guide rail is arranged at an angle with the moving direction of the movable seat, and the guide rail can be aligned with the second guide rail during the movement of the movable seat;

[0015] The transport assembly also includes a trolley, which is slidably connected to the guide rail, and the traction device can be detachably connected to the second guide rail and detachably connected to the trolley.

[0016] Optionally, the traction device includes a translation cylinder and a pawl seat, the pawl seat is connected to the cylinder barrel of the translation cylinder, the piston rod of the translation cylinder can be detachably connected to the moving seat or the trolley respectively, and the pawl seat can be detachably connected to the first guide rail or the second guide rail respectively.

[0017] Optionally, a limited support is detachably provided on the first guide rail;

[0018] When the movable seat contacts the limit support, the trolley is located at the communication port.

[0019] Limiting plates are arranged on both sides of the movable seat, and guiding grooves are arranged on both sides of the first guide rail, and the limiting plates are slidably connected with the guiding grooves.

[0020] Optionally, the first guide rail and the second guide rail are arranged at 90°, and the connecting port is arranged on the side of the first guide rail.

[0021] Optionally, a lifting cylinder is provided between the transport frame and the turnover frame assembly, and a cylinder groove is provided on the transport frame.

[0022] Optionally, the transport frame is provided with a positioning seat, and the turnover frame assembly includes a fixing seat;

[0023] When the fixed seat of the flip frame assembly is flipped downward, the flip frame assembly and the positioning seat are fixed by a detachable first pin shaft; when the movable seat of the flip frame assembly is flipped downward, the flip frame assembly and the articulated seat are fixed by a detachable second pin shaft.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] 1. A blowout preventer transport device provided by the present invention is equipped with a flip frame assembly, which can realize the conversion of the blowout preventer between the upright state and the laid-down state; at the same time, a translation drive device is used for the movement of the blowout preventer, which can directly move the blowout preventer to the bottom of the blowout preventer lifting beam or even to the wellhead position.

[0026] 2. The present invention provides a BOP transport device. After the BOP is installed on the transport device for the first time, the BOP group does not need to be disassembled and assembled each time the equipment is moved and transported. The BOP group can be directly transported as a whole with the device. This greatly improves the convenience of installation, greatly shortens the disassembly and assembly time, significantly improves work efficiency, and saves a lot of manpower.

[0027] 3. The BOP transport device provided by the present invention has an overall transport and stable installation process, which reduces the operational risk, ensures the safety of the staff, and improves the safety of the operation. In addition, the design of the device is simple and efficient, with few modules and reliable technology, which is not only easy to maintain, but also reduces the maintenance cost. At the same time, its efficient transportation and installation functions greatly speed up the project progress and provide strong support for the development of oil and gas fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0029] Figure 1 Schematic diagram of the blowout preventer transfer device.

[0030] Figure 2 Schematic diagram of the transport rack.

[0031] Figure 3 Schematic diagram of the flip frame assembly.

[0032] Figure 4 Schematic diagram of the second guide rail.

[0033] Figure 5 A schematic diagram of the car.

[0034] Figure 6 This is a schematic diagram of the overall transportation of the blowout preventer.

[0035] Figure 7 for Figure 1 Schematic diagram of the traction device at point A.

[0036] Figure 8 This is a schematic diagram of the BOP movement.

[0037] Markings in the figure: 1-transport rack, 101-articulated seat, 102-positioning seat, 103-cylinder groove, 104-first guide rail, 105-guide groove, 2-anti-tilt bracket, 3-turning rack assembly, 301-fixed seat, 3011-fixed component, 3012-ladder, 3013-support plate, 302-moving seat, 3021-limiting plate, 4-traction device, 401-pawl seat, 401 1-support, 4012-ratchet, 4013-limit block, 4014-fixing bolt, 402-translation cylinder, 5-lifting cylinder, 6-second guide rail, 7-limit support, 8-trolley, 801-bracket, 802-pressure test flange, 803-roller assembly, 804-stop bolt, 9-blowout preventer group connecting device, 10-drill pipe clamp, 11-first pin shaft, 12-second pin shaft. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0040] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0041] A blowout preventer transport device, such as Figure 1-8 As shown, including:

[0042] A transport frame 1, wherein the transport frame 1 is hingedly connected to a flip frame assembly 3 for connecting the blowout preventer group in both a fallen state and an upright state through a hinge seat 101;

[0043] A transport assembly for detachably connecting the BOP group;

[0044] A guide rail assembly connected to the transport frame 1 and used to be arranged between the lifting position of the blowout preventer assembly and the wellhead position;

[0045] The transport assembly can move along the path of the guide rail group so as to move the blowout preventer group from the lifting position to the wellhead position.

[0046] Specifically, the transport frame 1 provides support for the entire device and brings all the components together. During transportation, the transport frame 1 can be directly moved to complete the movement of the entire device. After fixing the blowout preventer group, the flip frame assembly 3 can provide it with two position states of falling down and standing up, corresponding to the two states of transportation and operation of the blowout preventer group. The guide rail group is set between the articulated seat 101 and the target lifting position, and can drive the transfer assembly to move along the guide rail group to the bottom of the lifting device, or directly to the wellhead.

[0047] In the present disclosure, there is no limitation on the number of guide rails constituting the guide rail group, that is, the guide rail group may consist of only one guide rail, or may include two guide rails or more than two guide rails. The specific number may be determined according to the terrain and path between the lifting position and the wellhead position of the blowout preventer group. It is only necessary to realize that the transfer assembly can be transferred from the lifting position to the wellhead position along the extension direction of the guide rail group. In addition, there is no limitation on the shape of the guide rail, which may be a linear guide rail, an arc guide rail, a special-shaped guide rail, etc. As an exemplary embodiment, Figure 1 , 2 As shown in FIG. 4 , the guide rail group includes a first guide rail 104 and a second guide rail 6 , wherein the first guide rail 104 and the second guide rail 6 are arranged at an angle and have a communication port;

[0048] The blowout preventer transport device further includes a traction device 4, at least one of which is provided, and the traction device 4 is detachably connected to the first guide rail 104 and / or the second guide rail 6. In other words, in some embodiments, two traction devices 4 may be provided, which are detachably installed on the first guide rail 104 and the second guide rail 6, respectively; in other embodiments, only one traction device 4 may be provided, which is detachably installed on the first guide rail 104 or the second guide rail 6.

[0049] The angle setting between the first guide rail 104 and the second guide rail 6 can adapt to the path change of the blowout preventer group from the initial position to the wellhead position. The design of the connecting port ensures a smooth transition of the blowout preventer group when transferring between the two sections of the guide rails. Among them, the first guide rail 104 can be located on the transport frame 1, so that the movable seat 302 can move along the specified direction, and will not separate from the transport frame 1 during the movement, which is convenient for transportation. Through the combined use of the above-mentioned guide rails and the translation drive device, the blowout preventer assembly can be directly moved to the bottom of the lifting beam or the wellhead position, thereby avoiding multiple lifting and handling in traditional methods. Since the traction device 4 is used successively between the first guide rail 104 and the second guide rail 6, the use cost of the equipment can be saved by relocating the same traction device 4.

[0050] As another specific embodiment, the transport assembly includes a moving seat 302, the moving seat 302 is slidably connected to the first guide rail 104, and the traction device 4 can be detachably connected to the first guide rail 104 and detachably connected to the moving seat 302. The moving seat 302 can drive the blowout preventer group to move on the first guide rail 104. The traction device 4 can drive the moving seat 302 to move on the first guide rail 104.

[0051] As another specific embodiment, a guide rail is provided above the movable seat 302, the extension direction of the guide rail is set at an angle to the moving direction of the movable seat 302, and the guide rail can be aligned with the second guide rail 6 during the movement of the movable seat 302;

[0052] The transport assembly also includes a trolley 8, such as Figure 5 As shown, the trolley 8 is slidably connected to the guide rail, and the traction device 4 can be detachably connected to the second guide rail 6 and detachably connected to the trolley 8 .

[0053] In order to keep a fixed path when moving along the first guide rail 104 and the second guide rail 6, the moving seat 302 is used to move along the first guide rail 104, and it is guided during the movement to prevent deviation in other directions; when moving along the second guide rail 6, a trolley 8 is used, and the trolley 8 moves alone. The movement of the blowout preventer group in these two directions can be independently controlled. This independent control provides higher operational flexibility and accuracy, does not affect each other, and helps to maintain the stability and repeatability of the guide. The alignment design of the guide rail and the second guide rail 6 ensures that the blowout preventer assembly can smoothly transition between the two sections of the guide rails in different directions, reducing vibration and impact during transportation. The trolley 8 includes a bracket 801, and a pressure test flange 802 is connected to the top of the bracket 801 through a pin; a roller assembly 803 is also provided on the bracket 801, and a stop bolt 804 is connected to the roller assembly 803.

[0054] As another specific implementation, Figure 7As shown, the traction device 4 includes a translation cylinder 402 and a pawl seat 401, the pawl seat 401 is connected to the cylinder barrel of the translation cylinder 402, the piston rod of the translation cylinder 402 can be detachably connected to the moving seat 302 or the trolley 8, and the pawl seat 401 can be detachably connected to the first guide rail 104 or the second guide rail 6. Hydraulic oil is pumped into the translation cylinder 402 to push the piston rod to move, and the trolley 8 or the moving seat 302 is driven to move along the guide rail through the engagement of the pawl seat 4012 with the guide rail. Specifically, the first guide rail 104 and the second guide rail 6 are provided with pawl seat 4012 holes arranged along the length direction. A long distance movement can be achieved. The pawl seat 401 is provided with a support 4011, and the support 4011 is connected with a pawl seat 4012 via a pin shaft. Limit blocks 4013 for connecting the first guide rail 104 or the second guide rail 6 are provided on both sides of the bracket 801, and fixing bolts 4014 are provided on the limit blocks 4013.

[0055] As another specific implementation, a limited support 7 is detachably provided on the first guide rail 104;

[0056] When the movable seat 302 contacts the limit support 7 , the trolley 8 is located at the communication port.

[0057] When the movable seat 302 moves to the communication port between the first guide rail 104 and the second guide rail 6, the movable seat 302 is limited to prevent it from moving too much. At this time, the trolley 8 can be driven by the traction device 4 to transfer from the communication port to the second guide rail 6 for lateral movement.

[0058] As another specific embodiment, the two sides of the movable seat 302 are provided with limit plates 3021, the two sides of the first guide rail 104 are provided with guide grooves 105, and the limit plates 3021 are slidably connected with the guide grooves 105. Through the limit of the limit plates 3021 and the guide grooves 105, it is possible to ensure that the movable seat 302 always moves along the first guide rail 104 without upward and downward deviation. Further, the limit plates 3021 are detachably arranged on the movable seat 302.

[0059] In the present disclosure, there is no limitation on the angle formed between the first guide rail 104 and the second guide rail 6, which can be set according to the actual situation of the well site. As an exemplary embodiment, the first guide rail 104 and the second guide rail 6 can be set at 90°, and the communication port is set on the side of the first guide rail 104. The horizontal and vertical movements are independent, easy to calibrate and control, and help to accurately control the movement of the blowout preventer assembly.

[0060] As another specific embodiment, a lifting cylinder 5 is provided between the transport frame 1 and the flip frame assembly 3, and a cylinder groove 103 is provided on the transport frame 1. The lifting cylinder 5 can generate a large force through hydraulic action, which is enough to cope with the flipping of heavy objects, and the force output of the cylinder is stable, which can ensure the stability of the flipping process. And the flipping of the flip frame can be realized relatively simply, greatly reducing the manpower requirements. The lifting cylinder 5 is located on the back of the flip frame assembly 3. Therefore, when the flip frame assembly 3 is laid down, the lifting cylinder 5 is below it and can be accommodated by the cylinder groove 103 to prevent structural interference.

[0061] As another specific implementation, Figure 6 As shown, the transport frame 1 is provided with a positioning seat 102, and the turnover frame assembly 3 includes a fixing seat 301;

[0062] When the fixed seat 301 of the flip frame assembly 3 is flipped downward, the flip frame assembly 3 and the positioning seat 102 are fixed by a detachable first pin 11; when the movable seat 302 of the flip frame assembly 3 is flipped downward, the flip frame assembly 3 and the hinge seat 101 are fixed by a detachable second pin 12. Preferably, when the flip frame assembly 3 is laid down, the positioning seat 102 is connected to the top of the fixed seat 301. During transportation, the fixed seat 301 and the positioning seat 102 may be relatively displaced due to the movement of the vehicle. The use of the detachable first pin 11 for fixing can ensure that the relative position between the two remains unchanged, avoiding damage caused by relative movement. In addition, the top fixation provides an additional support point for the flip frame assembly 3, forming a double-point support with the hinge shaft at the bottom, significantly improving the stability of the entire structure. The detachable design allows the pin to be quickly removed when the flip frame assembly 3 needs to be flipped. The second pin 12 can fix the flip frame assembly 3 when it is in an upright state, maintaining stability during the installation of the blowout preventer. Furthermore, the fixed seat 301 of the flip frame assembly 3 is fixed to the articulated seat 101. When the movable seat 302 is translated, the connection between the movable seat 302 and the fixed seat 301 can be directly removed and then the movable seat 302 can be moved without removing the pin shaft between the fixed seat 301 and the articulated seat 101, thereby simplifying the operation process.

[0063] Further, the fixed seat 301 and the movable seat 302 respectively support the blowout preventer group when it is laid down and when it is upright, and can fix the blowout preventer group on the flip frame assembly 3. Specifically, the fixed seat 301 and the movable seat 302 are connected in an L shape, and the fixed seat 301 is provided with a fixing component 3011 for fixing the blowout preventer group in the fallen state, and the movable seat 302 is provided with a blowout preventer group connecting device 9 for connecting the blowout preventer group in the upright state. The fixed seat 301 and the movable seat 302 are detachably connected, and the fixed seat 301 is hinged to the hinge seat 101. In this solution, when the movable seat 302 is facing downward, the fixed seat 301 and the movable seat 302 can be disassembled, so that the indirect connection relationship between the movable seat 302 and the hinge seat 101 is also released. The traction device 4 only needs to drive the movable seat 302 when driving, and the weight is lower, and the driving force required for the traction device 4 is smaller. At the same time, the movable seat 302 has a lower center of gravity than the flip frame assembly 3, and the structure is more stable during movement, which effectively prevents tipping. Alternatively, the flip frame assembly 3 and the hinge seat 101 are detachably connected. In this solution, the fixed seat 301 and the movable seat 302 of the flip frame assembly 3 can be fixedly connected as a whole, or can be detachably connected. The hinge seat 101 can be partially connected to the fixed seat 301, or partially connected to the movable seat 302. After the hinge is removed, the turnover frame assembly 3 is directly disconnected from the hinge seat 101 , so the traction device 4 can directly drive the turnover frame assembly 3 to move.

[0064] As another specific implementation, anti-tilt brackets 2 are provided on both sides of the transport rack 1. The anti-tilt brackets 2 increase the contact area between the transport rack 1 and the base below, thereby ensuring the stability of the transport rack 1 and the upper components.

[0065] As another specific embodiment, in order to perform pressure test operation on this device, a ladder 3012 is provided on at least one side of the fixing seat 301, and a support plate 3013 and a safety rope ear plate for operators to stand on are also provided on the fixing seat 301; and a drill pipe clamp 10 for installation on the blowout preventer group is also included. It is convenient for hoisting and can fix the drill pipe on the top of the annular blowout preventer during pressure test. No additional complicated operation is required. It is only necessary to check whether the device is installed stably, whether the blowout preventer group is intact, and whether the pressure test pipeline is connected correctly, so that the pressure test work can be completed efficiently, and the operation is convenient and safe. The safety rope ear plate is used to hang the safety rope. When the drill pipe clamp 10 needs to be pressure tested during drilling, the drill pipe is fixed to the annular blowout preventer with the drill pipe clamp 10 when the pressure test drill pipe is installed at the wellhead, which can prevent the drill pipe from falling into the wellhead.

[0066] A method for transferring a blowout preventer comprises the following steps:

[0067] Step 1, connect each device to the ready state;

[0068] First, connect the transport frame 1 with the base, then connect the end ear plate of the piston rod of the lifting cylinder 5 with the transport frame 1 by the pin of the lifting cylinder 5, install the turning frame assembly 3 on the transport frame 1 by the pin of the turning frame, and then connect the end ear plate of the cylinder barrel of the lifting cylinder 5 with the rotating frame assembly by the pin of the lifting cylinder 5; in this process, in order to facilitate the installation of the lifting cylinder 5, the turning frame assembly 3 can be laid down first, and the turning frame assembly 3 and the fixing seat 301 can be fixed by a detachable pin;

[0069] The anti-tilt bracket 2 is installed on both sides of the transport frame 1 through the pin shaft;

[0070] Step 2, adjust the flip frame assembly 3 to the moving seat 302 facing downward; connect the hydraulic pipeline of the lifting cylinder 5, remove the first pin 11 of the fixed seat 301, rotate the rotating frame flip frame assembly 3 to an upright state through the lifting cylinder 5, and then connect the articulated seat 101 and the fixed seat 301 through the second pin 12 to limit the upright direction;

[0071] Step 3, installing the BOP group on the mobile seat 302; the assembled BOP group can be hoisted onto the mobile seat 302 by a crane for installation, or it can be assembled piece by piece on the mobile seat 302; when a trolley 8 is provided on the mobile seat 302, the BOP group is mounted on the trolley 8;

[0072] Step 4, disassemble the connection between the fixed seat 301 and the movable seat 302, and assemble the traction device 4 to connect the movable seat 302 and the first guide rail 104; install the pawl seat 401 on the first guide rail 104, and then use a pin to connect the cylinder end and the piston rod end of the translation cylinder 402 to the pawl seat 401 and the movable seat 302 respectively, and connect the hydraulic pipeline of the translation cylinder 402.

[0073] Step 5, the traction device 4 moves the movable seat 302 to the specified position along the first guide rail 104; the connection between the fixed seat 301 and the movable seat 302 is removed, and then the translation cylinder 402 is controlled to move the movable seat 302 by pushing and pulling the translation cylinder 402 to move the blowout preventer group to the bottom of the lifting device on the base, and the blowout preventer group is sent to the wellhead through the lifting device or directly to the wellhead.

[0074] As another specific implementation, step 1 includes connecting the second guide rail 6 to one side of the transport frame 1; first connecting the transport frame 1 to the base, and then connecting the end ear plate of the piston rod of the lifting cylinder 5 to the transport frame 1 with the lifting cylinder 5 pin, installing the flip frame assembly 3 on the transport frame 1 through the flip frame pin, and then connecting the end ear plate of the cylinder barrel of the lifting cylinder 5 to the rotating frame assembly with the lifting cylinder 5 pin; in this process, in order to facilitate the installation of the lifting cylinder 5, the flip frame assembly 3 can be laid down first, and the flip frame assembly 3 and the fixed seat 301 can be fixed by a detachable first pin 11;

[0075] The anti-tilt bracket 2 is installed on both sides of the transport frame 1 through the pin shaft;

[0076] Connect the second guide rail 6 to one side of the transport frame 1;

[0077] The step 4 also includes installing the limit support 7; installing the pawl seat 401 on the first guide rail 104, and then connecting the cylinder end and the piston rod end of the translation cylinder 402 to the pawl seat 401 and the moving seat 302 of the first guide rail 104 respectively with a pin, and connecting the hydraulic pipeline of the translation cylinder 402; installing the limit support 7;

[0078] The following steps are also included:

[0079] Step 6, dismantle the traction device 4, and use the traction device 4 as an assembly to connect the trolley 8 and the second guide rail 6;

[0080] Step 7, the traction device 4 moves the trolley 8 to the specified position along the second guide rail 6, and uses the push and pull functions of the translation cylinder 402 to move the moving seat 302 to move the BOP group to the bottom of the hoisting device on the base, and then sends the BOP group to the wellhead through the hoisting device or directly to the wellhead.

[0081] A method for transporting a blowout preventer comprises the following steps:

[0082] Step 1, connect each device to the ready state;

[0083] Step 2, adjust the flip frame assembly 3 so that the movable seat 302 faces downward;

[0084] Step 3: Install the BOP assembly onto the movable seat 302;

[0085] Step 4, fix the BOP group by the fixing assembly 3011 on the fixing seat 301; install the fixing clamp to limit the BOP group;

[0086] Step 5, flip the flip frame assembly 3, until the fixed seat 301 is facing downward; the lifting cylinder 5 puts down the entire blowout preventer group and the flip frame assembly 3 as a whole;

[0087] Step 6: Remove the devices connected in step 1, and the BOP group can be transported as a whole. Remove the anti-tilt bracket 2, disconnect the transport frame 1 from the second guide rail 6, and install the pin between the flip frame assembly 3 and the fixing seat 301 and the positioning seat 102, and the BOP group can be transported as a whole.

[0088] A blowout preventer pressure testing method comprises the following steps:

[0089] Step 1, connect each device to the ready state;

[0090] Step 2, adjust the flip frame assembly 3 so that the movable seat 302 faces downward;

[0091] Step 3: Install the BOP assembly onto the movable seat 302;

[0092] Step 4: Perform pressure test. Check whether the device is installed smoothly, whether the BOP assembly is intact, and whether the pressure test pipeline is connected correctly, so that the pressure test work can be completed efficiently, and the operation is convenient and safe. When the pressure test drill pipe is installed at the wellhead, the drill pipe is fixed to the annular blowout preventer with the drill pipe clamp 10 to prevent the drill pipe from falling into the wellhead.

[0093] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A blowout preventer transport device, characterized in that: include: A transport frame (1), the transport frame (1) being hingedly connected to a turnover frame assembly (3) for connecting the blowout preventer group in both a fallen state and an upright state through a hinged seat (101); A transport assembly for detachably connecting the BOP stack; A guide rail assembly connected to the transport frame (1) and used for being arranged between a lifting position of the blowout preventer assembly and a wellhead position; The transport assembly can move along the path of the guide rail group so as to move the blowout preventer group from the lifting position to the wellhead position.

2. The blowout preventer transport device according to claim 1, characterized in that: The guide rail group comprises a first guide rail (104) and a second guide rail (6), wherein the first guide rail (104) and the second guide rail (6) are arranged at an angle and have a communication port; The blowout preventer transport device further comprises a traction device, at least one traction device is provided, and the traction device can be detachably connected to the first guide rail (104) and / or the second guide rail (6).

3. The blowout preventer transport device according to claim 2, characterized in that: The transport assembly comprises a moving seat (302), the moving seat (302) is slidably connected to the first guide rail (104), and the traction device (4) can be detachably connected to the first guide rail (104) and detachably connected to the moving seat (302).

4. The blowout preventer transport device according to claim 3, characterized in that: A guide rail is provided above the movable seat (302), the extension direction of the guide rail is arranged at an angle to the moving direction of the movable seat (302), and the guide rail can be aligned with the second guide rail (6) during the movement of the movable seat (302); The transport assembly further comprises a trolley (8), the trolley (8) being slidably connected to the guide rail, and the traction device (4) being detachably connected to the second guide rail (6) and detachably connected to the trolley (8).

5. The blowout preventer transport device as claimed in claim 4, characterized in that: The traction device (4) comprises a translation cylinder (402) and a ratchet seat (401); the ratchet seat (401) is connected to the cylinder barrel of the translation cylinder (402); the piston rod of the translation cylinder (402) can be detachably connected to the movable seat (302) or the trolley (8), respectively; and the ratchet seat (401) can be detachably connected to the first guide rail (104) or the second guide rail (6), respectively.

6. The blowout preventer transport device according to claim 4, characterized in that: A limited support (13) is detachably provided on the first guide rail (104); When the movable seat (302) contacts the limit support (13), the trolley (8) is located at the communication port.

7. The blowout preventer transport device according to claim 3 or 4, characterized in that: Limiting plates (3021) are provided on both sides of the movable seat (302), and guiding grooves (105) are provided on both sides of the first guide rail (104), and the limiting plates (3021) are slidably connected to the guiding grooves (105).

8. The blowout preventer transport device according to any one of claims 2 to 4, characterized in that: The first guide rail (104) and the second guide rail (6) are arranged at 90 degrees, and the communication port is arranged on the side of the first guide rail (104).

9. The blowout preventer transport device according to any one of claims 1 to 4, characterized in that: A lifting oil cylinder (5) is provided between the transport frame (1) and the turnover frame assembly (3), and an oil cylinder groove (103) is provided on the transport frame (1).

10. The blowout preventer transport device according to any one of claims 1 to 4, characterized in that: The transport frame (1) is provided with a positioning seat (102), and the turnover frame assembly (3) includes a fixing seat; When the fixed seat (301) of the flip frame assembly (3) flips downward, the flip frame assembly (3) and the positioning seat (102) are fixed via a detachable first pin shaft (11); when the movable seat (302) of the flip frame assembly (3) flips downward, the flip frame assembly (3) and the articulated seat (101) are fixed via a detachable second pin shaft (12).

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