Self-elevating derrick device of coiled tubing operation machine and use method of self-elevating derrick device

Abstract

The invention relates to a coiled tubing working machine self-elevating derrick device and a using method thereof, and the device comprises a derrick body which comprises a door-shaped main frame; the turnover lifting hydraulic cylinder is used for adjusting the dumping transportation posture and the vertical lifting posture of the derrick body; the lifting device comprises a lifting main frame, and a lifting driving part is used for driving the lifting main frame to ascend and descend along the door-shaped main frame through a gear and rack structure; the wellhead mounting frame comprises a bearing hanging seat, and the bearing hanging seat is provided with a multi-degree-of-freedom translation adjusting structure used for being connected with the injection head and enabling the injection head to translate and align to a wellhead; a dip angle adjusting hydraulic cylinder is hinged between the bearing hanging seat and the lifting device to adjust the dip angle of the injection head; the hydraulic control system comprises an electric proportional multi-way valve, and the electric proportional multi-way valve can be remotely operated through a wireless transmitter. Switching of two postures of dumping transportation and vertical operation of the coiled tubing injection head and lifting self-adaption to the height of a wellhead and translation adjustment centering during operation are achieved through wireless remote control, and the wellhead disassembly and assembly efficiency of coiled tubing operation is improved.

Description

Technical Field

[0001] The invention relates to the field of petroleum equipment, and in particular to a self-elevating derrick device of a continuous tubing operation machine and a use method thereof. Background Art

[0002] Conventional transportation method of injection head: During the transportation of coiled tubing equipment, the injection head is usually installed on a special tiltable and flippable bracket to lower the transportation height, and then the entire head is loaded onto a chassis vehicle or a wellhead skid for transportation.

[0003] Wellhead disassembly and assembly mode of coiled tubing operation: The injection head is lifted by a crane, and the operator stands under the lifted injection head and manually disassembles and assembles the flanges or unions of the coiled tubing well control equipment such as the blowout preventer box, blowout preventer, and blowout preventer. The disassembly and assembly process is time-consuming and labor-intensive, and the risk of climbing up and down is high.

[0004] Injection head operation support method: During the continuous pipe operation, the injection head is usually installed at a certain height directly above the wellhead by crane hoisting or tower support, and the center of the injection head is guaranteed to coincide with the center of the wellhead during operation. The crane hoisting method is to lift the injection head above the wellhead for operation. This operation method has the characteristics of strong mobility and easy installation, but the crane needs to be suspended all the time during the operation. There are problems such as high crane rental cost, no operation and maintenance platform and poor support stability. It is suitable for small-scale short-term continuous pipe operations. The tower support method is to stack multi-layer steel structure skids in sequence like building blocks, and support the injection head to a certain operating height for operation. This operation method has high support reliability and can realize the customized requirements of functions such as multi-degree-of-freedom control of the injection head centering the wellhead, but it requires a crane to cooperate with installation and disassembly before and after the operation, cumbersome assembly, occupying well site space, and requiring special vehicle transportation during transfer operations.

[0005] At present, conventional continuous tubing derrick devices use hydraulic cylinder lifting or hydraulic motor-driven wire rope winch + pulley block to achieve the lifting and lowering adjustment of the injection head, and rely on the derrick inclination adjustment to achieve the front and rear adjustment of the injection head to the wellhead. The braking safety system is complex and there are problems such as low operating stability and safety.

[0006] Therefore, the inventor, relying on many years of experience and practice in related industries, proposes a self-elevating derrick device for a continuous tubing operation machine and a method of using the same to overcome the defects of the prior art. Summary of the invention

[0007] The purpose of the present invention is to provide a self-elevating derrick device for a coiled tubing operation machine and a method for using the same, which can solve the problems of transportation, rapid wellhead installation and safe support for operation of the injection head of the coiled tubing operation machine in an integrated manner without the need for a special flip transport bracket and a crane, and can realize rapid switching of the two postures of the coiled tubing injection head on the derrick between tilting transportation and vertical operation through remote wireless remote control operation, and can realize rapid installation or removal of the injection head on the operation wellhead through adaptive wellhead height lifting and translation adjustment and centering during operation, thereby improving the wellhead disassembly efficiency of the coiled tubing operation and reducing the lifting risk and cost.

[0008] The object of the present invention is achieved by providing a self-elevating derrick device for a continuous tubing operation machine, comprising:

[0009] The derrick body includes a portal main frame installed at the rear of the coiled tubing machine chassis;

[0010] A tilting and lifting hydraulic cylinder is hinged between the coiled tubing machine chassis and the portal main frame, and is used to adjust the dumping and transportation posture and the vertical lifting posture of the derrick body;

[0011] The lifting device comprises a lifting main frame, a gear rack structure is arranged between the lifting main frame and the portal main frame, and a lifting driving unit is connected to the lifting main frame; the lifting driving unit is used to drive the lifting main frame to lift and lower along the portal main frame through the gear rack structure;

[0012] The wellhead mounting frame comprises a bearing mount suspended on the lifting main frame, the bearing mount being provided with a multi-degree-of-freedom translation adjustment structure for connecting the injection head and making the injection head translate to the wellhead; an inclination adjustment cylinder is articulated between the bearing mount and the lifting device to adjust the inclination of the injection head on the bearing mount;

[0013] The hydraulic control system includes an electric proportional multi-way valve. The lifting drive unit, the tilt adjustment cylinder, and the flip lifting cylinder are all connected to the electric proportional multi-way valve signal. The electric proportional multi-way valve is connected to a signal receiver and controller. The electric proportional multi-way valve can be remotely controlled via a wireless transmitter.

[0014] In a preferred embodiment of the present invention, the portal main frame includes two main beams arranged in parallel and at intervals, and the two main beams are connected by a connecting beam; inner grooves are arranged on opposite sides of the two main beams; the rack and pinion structure includes a rack and a gear, and the rack is arranged on one side of the inner groove of each main beam; the gears are respectively arranged on both sides of the lifting main frame, and each gear can be meshed with each rack respectively.

[0015] In a preferred embodiment of the present invention, a guide rail structure is provided on the other side of the inner groove of each main beam, and a slider structure is provided on both sides of the lifting main frame, and the slider structure can slide along the guide rail structure.

[0016] In a preferred embodiment of the present invention, a first roller bearing assembly and a second roller bearing assembly are respectively arranged on both sides of the lifting main frame; the planes on the opposite sides of the two guide rail structures and the planes on the opposite sides of the two racks are set as main planes, and the planes on the opposite sides of the guide rail structure and the racks are set as side planes; the first roller bearing assembly can be in contact with the main planes of the guide rail structure and the racks on the main beam; the second roller bearing assembly can be in contact with the side planes of the guide rail structure.

[0017] In a preferred embodiment of the present invention, the first roller bearing assembly includes a heavy-loaded roller bearing, which is hinged to a first bearing frame via a first pin, and the first bearing frame is connected to the lifting main frame; the second roller bearing assembly includes a supporting roller bearing, which is hinged to a bearing slide, and the bearing slide is connected to the lifting main frame.

[0018] In a preferred embodiment of the present invention, the rack includes a plurality of rack segments connected end to end, and a positioning pin and a positioning block are respectively provided at both ends of each of the rack segments.

[0019] In a preferred embodiment of the present invention, outer sides of the two main beams are respectively provided with outer grooves, and a plurality of pipeline clamps are provided on one side of the outer grooves.

[0020] In a preferred embodiment of the present invention, a pedal and a handrail are provided on the other side of the outer groove.

[0021] In a preferred embodiment of the present invention, a mounting sleeve is provided at the bottom of each main beam and can be hinged to the rear of the continuous tubing machine chassis.

[0022] In a preferred embodiment of the present invention, a flip cylinder ear seat is provided on the door-type main frame, and the flip cylinder ear seat is hinged to one end of the flip lifting cylinder.

[0023] In a preferred embodiment of the present invention, the lifting drive unit includes a hydraulic motor and a rotary reducer, the rotary reducer is connected to the gear, and the hydraulic motor is connected to the hydraulic control system signal.

[0024] In a preferred embodiment of the present invention, a suspension circular shaft is provided on the lifting main frame, the bearing mount is suspended on the suspension circular shaft, and the bearing mount can rotate around the suspension circular shaft under the action of the inclination adjusting cylinder to adjust the inclination.

[0025] In a preferred embodiment of the present invention, the multi-degree-of-freedom translation adjustment structure includes a translation seat capable of moving along the Y direction of the bearing mount, and the Y-direction translation hydraulic cylinder is connected to the translation seat; an injection head seat capable of moving along the X direction of the bearing mount is provided on the translation seat, and the injection head seat is used to connect an injection head, and the injection head seat is connected to the X-direction translation hydraulic cylinder.

[0026] In a preferred embodiment of the present invention, the injection head seat is connected to a blowout preventer support frame extending downward.

[0027] In a preferred embodiment of the present invention, turning platforms are provided on both sides of the bearing bracket.

[0028] In a preferred embodiment of the present invention, a guy wire attachment is included, wherein the guy wire attachment includes a guy wire device, a hydraulic support leg located at the rear of the chassis vehicle, and a derrick support leg located in the middle of the chassis vehicle.

[0029] The object of the present invention can also be achieved in this way. A method for using the self-elevating derrick device of the aforementioned coiled tubing operation machine, in the transportation state, a wireless transmitter controls the flipping and lifting cylinder to tilt the derrick body; in the operation state, the self-elevating derrick device of the coiled tubing operation machine is placed at a set position at the wellhead, and the wireless transmitter controls the flipping and lifting cylinder to rotate and lift the derrick body with the injection head to a vertical operation posture, and the lifting device is controlled by a wireless remote control to complete the lifting and lowering of the injection head on the wellhead mounting frame, and the multi-degree-of-freedom translation adjustment structure is controlled to move in the plane X-axis and Y-axis directions, and the inclination adjustment cylinder is controlled to telescope and adjust the inclination of the wellhead mounting frame and the injection head, so as to complete the injection head, the wellhead blowout preventer and the wellhead centering installation; after the blowout prevention system action and the overall sealing performance test are carried out, the coiled tubing operation is carried out.

[0030] As described above, the self-elevating derrick device of the coiled tubing operation machine and the use method thereof of the present invention have the following beneficial effects:

[0031] (1) A gear rack structure is used to drive the lifting of the wellhead mounting frame connected to the injection head so that the injection head can adapt to the wellhead height. The overall structure is compact and beautiful, with good static stability, reliability and fixed-point positioning. The load can be safely locked according to the specified load, reducing the wellhead load;

[0032] (2) The wireless remote control operation mode is adopted to realize convenient and efficient operation by one person, which improves the safety, reliability and comfort of operation;

[0033] (3) The overturning lifting cylinder and the main frame can be used to quickly switch between the overturning and dumping transportation and the vertical working posture. The lifting device can realize the adaptive wellhead height of the injection head. The multi-degree-of-freedom translation adjustment structure can realize the multi-degree-of-freedom centering adjustment and rapid installation of the injection head and other wellhead devices and the working wellhead. The installation and transportation are convenient, which greatly improves the mechanization degree and working efficiency of the coiled tubing operation.

[0034] (4) The self-elevating derrick device of the coiled tubing operation machine of the present invention can be integrated with the coiled tubing operation machine into a vehicle-mounted structure, the injection head and the drum remain in a state of being connected by a pipe, and the blowout preventer box and the blowout preventer well control equipment are pre-connected with the injection head for integrated transportation, thereby saving the time of disassembling and assembling the wellhead device before and after the operation, avoiding the operational risks of operating under the hoisting injection head, and reducing the labor intensity of the wellhead disassembly and assembly operation and the cost of separate transportation;

[0035] (5) The self-elevating derrick device of the coiled tubing operation machine of the present invention can replace the crane equipment commonly used in coiled tubing operations, saving the high cost of full-time suspension of the crane during coiled tubing operations, reducing the cost of coiled tubing operations, and improving the safety of supporting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0037] in:

[0038] Figure 1 : is an isometric schematic diagram of the self-elevating derrick device of the continuous tubing operation machine of the present invention in the operating state.

[0039] Figure 2 : It is a front view of the self-elevating derrick device of the coiled tubing operation machine of the present invention when in operation state.

[0040] Figure 3 : It is a front view of the self-elevating derrick device of the coiled tubing operation machine of the present invention in the transportation state.

[0041] Figure 4a : is a schematic diagram of the wellhead mounting frame of the present invention when it is lifted to the highest position.

[0042] Figure 4b : is a schematic diagram of the wellhead mounting frame of the present invention when it is lifted to the lowest position.

[0043] Figure 5a : is a schematic diagram of the translation seat of the present invention when it moves to one side of the supporting base.

[0044] Figure 5b : is a schematic diagram of the translation seat of the present invention moving to the other side of the supporting base.

[0045] Figure 6a : It is a schematic diagram showing that the angle between the injection head on the wellhead mounting frame of the present invention and the horizontal plane is 90-2°.

[0046] Figure 6b : It is a schematic diagram showing that the angle between the injection head on the wellhead mounting frame of the present invention and the horizontal plane is 90+2°.

[0047] Figure 7a : is a schematic diagram of the door-type main frame of the present invention, close to the front of the vehicle.

[0048] Figure 7b : is a schematic diagram of the door-type main frame of the present invention near the rear end of the vehicle.

[0049] Figure 8 : is a schematic diagram of the lifting device of the present invention.

[0050] Fig. 9 : is a schematic diagram of the lifting drive unit of the present invention.

[0051] Fig.10 : is a schematic diagram of the first roller bearing assembly of the present invention.

[0052] Fig.11 : is a schematic diagram of the second roller bearing assembly of the present invention.

[0053] Fig.12 : is a schematic diagram of the wellhead mounting frame of the present invention.

[0054] Fig.13 : is the principle diagram of the hydraulic control system of the present invention.

[0055] In the figure:

[0056] 1. Door-type main frame;

[0057] 11. Main beam; 12. Connecting beam; 13. Guide rail structure; 14. Pipeline clamp; 15. Pedal; 16. Handrail; 17. Mounting sleeve; 18. Flip cylinder ear seat;

[0058] 2. Turn over the lifting cylinder;

[0059] 3. Lifting device;

[0060] 31. Lifting main frame; 32. Sliding block structure; 33. First roller bearing assembly; 331. Heavy-loaded roller bearing; 332. First pin shaft; 333. First bearing frame; 34. Second roller bearing assembly; 341. Support roller bearing; 342. Bearing slide seat; 343. Locking nut; 35. Lifting drive unit; 351. Hydraulic motor; 352. Rotary reducer; 36. Suspension round shaft;

[0061] 4. Wellhead mounting frame;

[0062] 41. Load-bearing bracket; 42. Translation seat; 421. Y-axis translation cylinder; 43. Injection head seat; 431. X-axis translation cylinder; 44. BOP support frame; 45. Turnover platform;

[0063] 51, rack; 511, positioning pin; 512, positioning block; 52, gear;

[0064] 6. Tilt adjustment cylinder; 61. First tilt cylinder ear seat; 62. Second tilt cylinder ear seat;

[0065] 7. Injection head;

[0066] 81. Guy rope device; 82. Hydraulic outrigger; 83. Derrick outrigger;

[0067] 91. Electric proportional multi-way valve; 92. Signal receiver and controller; 93. Wireless transmitter; 94. Balance valve; 95. Brake. DETAILED DESCRIPTION

[0068] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0069] The specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be considered to belong to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0071] like Figures 1 to 13 As shown, the present invention provides a self-elevating derrick device for a continuous tubing operation machine, comprising:

[0072] The derrick body includes a main door frame 1 installed at the rear of the coiled tubing machine chassis; the derrick body is a carrier for realizing the switching of the derrick device between the transport and working postures and the lifting and lowering functions;

[0073] The flipping and lifting cylinder 2 is hinged between the coiled tubing machine chassis and the portal main frame 1, and is used to adjust the dumping and transportation posture and the vertical lifting posture of the derrick body; the flipping and lifting cylinder 2 adopts a multi-stage telescopic cylinder form, which is conducive to reducing the inclination angle of the derrick body and shortening the installation distance; one end of the flipping and lifting cylinder 2 is installed on the cylinder ear seat of the chassis, and the other end is installed on the flipping and lifting cylinder ear seat of the derrick body, which is used to realize the adjustment of the dumping and transportation posture and the vertical lifting posture of the derrick;

[0074] The lifting device 3 includes a lifting main frame 31. A gear rack structure is arranged between the lifting main frame 31 and the portal main frame 1. The lifting main frame 31 is connected to a lifting driving unit. The lifting driving unit is used to drive the lifting main frame 31 to rise and fall along the portal main frame 1 through the gear rack structure. The lifting device is installed on the portal main frame 1 of the derrick body to realize the lifting and lowering of the injection head so that it can adapt to the wellhead height.

[0075] The wellhead mounting frame 4 includes a bearing mount 41 suspended on the lifting main frame, and a multi-degree-of-freedom translation adjustment structure is provided on the bearing mount 41 for connecting the injection head 7 and making the injection head translate to the wellhead; an inclination adjustment cylinder is hinged between the bearing mount 41 and the lifting device 3 to adjust the inclination of the injection head on the bearing mount; the function of the wellhead mounting frame 4 is mainly to install the bearing injection head and realize the horizontal movement of the injection head in the X-axis and Y-axis directions to center the wellhead;

[0076] The hydraulic control system includes an electric proportional multi-way valve. The lifting drive unit, the tilt adjustment cylinder, and the flip lifting cylinder are all connected to the electric proportional multi-way valve signal. The electric proportional multi-way valve is connected to the signal receiver and controller. The electric proportional multi-way valve can be remotely controlled through a wireless transmitter.

[0077] The self-elevating derrick device of the continuous tubing operation machine of the present invention combines a portal derrick body, a gear rack structure, a multi-degree-of-freedom translation adjustment structure and a wireless remote control control method. By controlling the portal main frame, the device can quickly switch between the vertical lifting operation and the flipping and tilting transportation postures. The gear rack structure is used to adjust the height of the injection head to adapt to the wellhead. The multi-degree-of-freedom translation adjustment structure on the wellhead mounting frame is used to achieve multi-degree-of-freedom translation adjustment of the injection head so that the injection head is centered on the wellhead. Wireless remote control operation is used to achieve safe and convenient operation of the device.

[0078] In the self-elevating derrick device of the coiled tubing operation machine of the present invention,

[0079] (1) A gear rack structure is used to drive the lifting of the wellhead mounting frame connected to the injection head so that the injection head can adapt to the wellhead height. The overall structure is compact and beautiful, with good static stability, reliability and fixed-point positioning. The load can be safely locked according to the specified load, reducing the wellhead load;

[0080] (2) The wireless remote control operation mode is adopted to realize convenient and efficient operation by one person, which improves the safety, reliability and comfort of operation;

[0081] (3) The overturning lifting cylinder and the main frame can be used to quickly switch between the overturning and dumping transportation and the vertical working posture. The lifting device can realize the adaptive wellhead height of the injection head. The multi-degree-of-freedom translation adjustment structure can realize the multi-degree-of-freedom centering adjustment and rapid installation of the injection head and other wellhead devices and the working wellhead. The installation and transportation are convenient, which greatly improves the mechanization degree and working efficiency of the coiled tubing operation.

[0082] (4) The self-elevating derrick device of the coiled tubing operation machine of the present invention can be integrated with the coiled tubing operation machine into a vehicle-mounted structure, the injection head and the drum (existing technology) remain in a state of being connected by a pipe, and the blowout preventer box and the blowout preventer well control equipment are pre-connected with the injection head for integrated transportation, thus saving the time of disassembling and assembling the wellhead device before and after the operation, avoiding the operational risks of operating under the hoisting injection head, and reducing the labor intensity of the wellhead disassembly and assembly operation and the cost of separate transportation;

[0083] (5) The self-elevating derrick device of the coiled tubing operation machine of the present invention can replace the crane equipment commonly used in coiled tubing operations, saving the high cost of full-time suspension of the crane during coiled tubing operations, reducing the cost of coiled tubing operations, and improving the safety of supporting operations.

[0084] Further, if Figure 7a , Figure 7b As shown, the portal main frame 1 includes two main beams 11 arranged in parallel and at intervals, and the two main beams 11 are connected by a connecting beam 12; in a specific embodiment of the present invention, the main beams 11 all adopt H-shaped steel structures; inner grooves are arranged on opposite sides of the two main beams 11; the gear rack structure includes a rack 51 and a gear 52, and a rack 51 is arranged on one side of the inner groove of each main beam 11; gears 52 are respectively arranged on both sides of the lifting main frame 31, and each gear 52 can be respectively engaged with each rack 51. Figure 4a It is a schematic diagram of the wellhead mounting frame of the present invention when it is lifted to the highest position; Figure 4b It is a schematic diagram of the wellhead mounting frame of the present invention when it is lifted to the lowest position.

[0085] In a specific embodiment of the present invention, Figure 7a , Figure 7b As shown, the rack 51 includes a plurality of rack segments (straight racks may be used) connected end to end, and a positioning pin 511 and a positioning block 512 are respectively provided at both ends of each rack segment. Each rack segment is mounted on the door-type main frame 1 by screw fastening, and the positioning pin 511 is used to ensure the installation accuracy of the rack, and the positioning block 512 is installed at the end-to-end connection of two rack segments as a fixed anchor point to increase the rigid support strength between the racks.

[0086] Further, if Figure 7a , Figure 7b, Figure 8 As shown, a guide rail structure 13 is arranged on the other side of the inner groove of each main beam 11, and a slider structure 32 is arranged on both sides of the lifting main frame 31, and the slider structure 32 can slide along the guide rail structure 13. The guide rail structure 13 is formed by splicing multiple guide rail sections end to end, and is installed on the door-shaped main frame by screw fastening, so as to realize the straightening and guiding of the lifting device along the linear motion direction of the rack.

[0087] Further, if Figure 8 As shown, the first roller bearing assembly 33 and the second roller bearing assembly 34 are respectively arranged on both sides of the lifting main frame 31; the planes on the opposite sides of the two guide rail structures and the planes on the opposite sides of the two racks are set as the main planes, and the planes on the opposite sides of the guide rail structure and the rack are set as the side planes; the first roller bearing assembly 33 can be in contact with the main planes of the guide rail structure 13 and the rack 51 on the main beam; the second roller bearing assembly 34 can be in contact with the side plane of the guide rail structure 13.

[0088] Further, if Fig.10 As shown, the first roller bearing assembly 33 includes a heavy-loaded roller bearing 331, which is hinged to the first bearing frame 333 through a first pin shaft 332, and the first bearing frame 333 is connected to the lifting main frame 31 (installed on the lifting main frame by screw fastening); the outer cylindrical surface of the heavy-loaded roller bearing 331 is in contact with the main plane of the guide rail structure 13 and the rack 51, ensuring that the lifting device coincides with the width center of the portal main frame 1 of the derrick body and does not deviate left or right.

[0089] like Fig.11 As shown, the second roller bearing assembly 34 includes a supporting roller bearing 341, which is hinged on a bearing slide 342, and the supporting roller bearing 341 is axially fixed on the bearing slide 342 through a locking nut 343, and the bearing slide 342 is connected to the lifting main frame 31. The outer cylindrical surface of the supporting roller bearing 341 contacts the side plane of the guide rail structure 13 (the guide rail plane opposite to the rack spur teeth), and assists the lifting and lowering linear motion of the straightening and lifting device along the portal main frame 1 of the derrick body.

[0090] Further, if Figure 7a , Figure 7b As shown, outer sides of the two main beams 11 are respectively provided with outer grooves, and a plurality of pipeline clamps 14 are arranged on one side of the outer grooves, so as to facilitate the hidden and beautiful fixed arrangement of the derrick hydraulic pipelines in the grooves.

[0091] Further, if Figure 7a , Figure 7b As shown, a pedal 15 and a handrail 16 are provided on the other side of the outer groove of the two main beams 11 to facilitate operators to climb onto the wellhead mounting frame to inspect and maintain the operating injection head.

[0092] Further, if Figure 7a , Figure 7b As shown, a mounting sleeve 17 is provided at the bottom of each main beam 11, which can be hinged to the rear of the coiled tubing machine chassis (rear pin), and the derrick body is mounted at the rear of the chassis to form a flip hinge.

[0093] Further, if Figure 7a , Figure 7b As shown, a flip cylinder lug 18 is provided on the portal main frame 1, and the flip cylinder lug 18 is hinged to one end of the flip lifting hydraulic cylinder 2. The flip cylinder lug 18, the flip lifting hydraulic cylinder 2 and the flip hinge of the mounting sleeve 17 cooperate with each other to realize the switching between the dumping transportation and vertical operation of the derrick body.

[0094] Further, if Fig. 9 As shown, the lifting drive unit 35 includes a hydraulic motor 351 and a rotary reducer 352, the rotary reducer 352 is connected to a gear 52, and the hydraulic motor is connected to the hydraulic control system signal. The lifting drive unit 35 is mounted on the lifting main frame 31 in the form of a flange, and the driving gear 52 (spur gear) moves linearly on the rack 51 of the derrick body, which is the core component to realize the lifting function.

[0095] Further, if Figure 8 As shown, a suspension shaft 36 is provided on the lifting main frame 31, and a bearing mount 41 is suspended and installed on the suspension shaft 36. The bearing mount 41 can rotate around the suspension shaft 36 under the action of the inclination adjustment cylinder to adjust the inclination. The suspension shaft 36 is a component for suspending and installing the wellhead mounting frame 4, which can realize the inclination adjustment of the operating injection head and facilitate the wellhead connection.

[0096] A first inclination cylinder ear seat 61 is provided on the lifting main frame 31, and a second inclination cylinder ear seat 62 is provided on the bearing bracket 41. Both ends of the inclination adjustment hydraulic cylinder 6 are respectively hinged to the first inclination cylinder ear seat 61 and the second inclination cylinder ear seat 62, so as to realize the inclination adjustment of the wellhead mounting frame and the injection head, and avoid the installation connection problems caused by the misalignment of the union or flange axis. Figure 6a It is a schematic diagram of the angle between the injection head on the wellhead mounting frame of the present invention and the horizontal plane being 90-2°; Figure 6b It is a schematic diagram showing that the angle between the injection head on the wellhead mounting frame of the present invention and the horizontal plane is 90+2°.

[0097] The function of the wellhead mounting frame 4 is mainly to install and support the injection head 7 and realize the horizontal movement of the injection head in the X-axis and Y-axis directions to center the wellhead. The overall structure is compact and easy to maintain.

[0098] The bearing bracket 41 is provided with an axial hole that can be suspended on the suspension circular shaft 36 and a second inclination cylinder ear seat 62 to achieve connection with the lifting device 3 and to achieve inclination adjustment of the entire wellhead mounting frame 4 through the inclination adjustment hydraulic cylinder 6.

[0099] Further, if Fig.12 As shown, the multi-degree-of-freedom translation adjustment structure is arranged in a multi-layer structure. The multi-degree-of-freedom translation adjustment structure includes a translation seat 42 that can move along the Y direction of the bearing mount 41, and the Y-direction translation fluid cylinder 421 is connected to the translation seat 42; the translation seat 42 is provided with an injection head seat 43 that can move along the X direction of the bearing mount, and the injection head seat 43 is used to connect the injection head, and the injection head seat 43 is connected to the X-direction translation fluid cylinder 431.

[0100] The translation seat 42 is installed on the Y-axis beam of the bearing mount 41, and the Y-axis translation cylinder can be used to realize the Y-axis movement of the translation seat 42 on the bearing mount. The injection head seat 43 is used to carry the installation of the injection head 7. The injection head seat is installed on the X-axis beam of the translation seat, and the X-axis translation cylinder can be used to realize the X-axis movement of the injection head seat 43 on the translation seat 42. Figure 5a This is a schematic diagram of the translation seat of the present invention when it moves to one side of the bearing base. Figure 5b It is a schematic diagram of the translation seat of the present invention when it moves to the other side of the supporting base.

[0101] Further, if Fig.12 As shown, the injection head seat 43 is connected to a blowout preventer support frame 44 extending downward. The blowout preventer support frame 44 is installed on the injection head seat to realize transportation support for the injection head and prevent the well control device from being suspended and damaged during transportation.

[0102] Further, if Fig.12 As shown, a turnover platform 45 is provided on both sides of the bearing bracket 41. When the turnover platform 45 is used for continuous tubing operation, the operator enters the turnover platform 45 through the derrick body ladder to operate the injection head, which is installed on both sides of the bearing bracket 41.

[0103] Further, if Figure 1 , Figure 2 As shown, it includes a guy rope accessory, which includes a guy rope device 81 pulled from the derrick body to the chassis and equipped with a basket bolt for adjustment, a hydraulic support leg 82 located at the rear of the chassis, and a derrick support leg 83 located in the middle of the chassis, which are used to increase the stability of the derrick in the vertical working posture and the support stability in the transportation state.

[0104] like Fig.13As shown, the hydraulic control system uses the vehicle-mounted hydraulic system of the coiled tubing machine to provide power, and an electric proportional multi-way valve 91 is set (the number of electric proportional multi-way valves is determined according to the posture adjustment requirements of the injection head components on the derrick, such as up and down, front and back, left and right, and inclination). The electric proportional multi-way valve 91 is connected to the signal receiving and controller 92, and the DC 24V power supply supplies power to the signal receiving and controller 92. The wireless signal is transmitted through the wireless transmitter 93, and the receiver outputs a proportional electrical signal to the electric proportional multi-way valve. The vehicle-mounted hydraulic system supplies hydraulic pressure to the electric proportional multi-way valve 91. After receiving the signal, the electric proportional multi-way valve 91 proportionally adjusts the opening degree of the multi-way valve, and outputs control oil pressure to the oil cylinders (inclination adjustment cylinder 6, Y-direction translation cylinder 421, X-direction translation cylinder 431), motors (hydraulic motors 351), and brakes 95 on the derrick body (the electric proportional multi-way valve 91 is connected through a balance valve 94), and the injection head on the derrick body is remotely controlled to adjust multiple degrees of freedom, thereby realizing the mechanized motion control on the wireless remote control derrick device.

[0105] The method of using the self-elevating derrick device of the coiled tubing operation machine of the present invention is as follows:

[0106] like Figure 3 As shown, in the transport state, the coiled tubing (prior art) on the drum (prior art) is inserted into the injection head (prior art), the guide (prior art) is in an unfolded state, the blowout preventer (prior art), the blowout preventer box (prior art) and the injection head (prior art) are in a connected state; the derrick body is tilted by flipping the lifting cylinder 2;

[0107] When the job status is set, the following steps are included:

[0108] (1) The coiled tubing unit is reversed to a suitable wellhead position (placed at the wellhead setting position): generally located within a range of about 1m from the rear of the unit to the wellhead.

[0109] (2) Place sleepers and lift the hydraulic legs at the rear of the chassis vehicle, and control the flip lifting cylinder 2 through the wireless transmitter (remote control) to rotate and lift the derrick body with the injection head to a vertical working posture. During the lifting process of the derrick body, pay attention to the lifting and lowering coordination of the drum pipe laying arm (existing technology) to prevent the continuous pipe from bending and being damaged at the guide, and pull the tension rope device well.

[0110] (3) Operate the injection head downhole pipe, lower the coiled tubing out of the blowout preventer, raise the injection head to a suitable height, and connect the downhole tools;

[0111] (4) After the tool is connected and pulled for trial, the lifting device 3 is controlled by the wireless remote control to complete the lifting and lowering of the injection head on the wellhead mounting frame 4, the multi-degree-of-freedom translation adjustment structure is controlled to move in the plane X-axis and Y-axis directions, and the inclination adjustment cylinder 6 is controlled to telescope and adjust the inclination of the wellhead mounting frame and the injection head, so as to complete the installation of the injection head, the wellhead blowout preventer (existing technology) and the wellhead in the center;

[0112] (5) After the blowout prevention system operation and overall sealing performance test, the continuous pipe operation is carried out.

[0113] As described above, the self-elevating derrick device of the coiled tubing operation machine and the use method thereof of the present invention have the following beneficial effects:

[0114] (1) A gear rack structure is used to drive the lifting of the wellhead mounting frame connected to the injection head so that the injection head can adapt to the wellhead height. The overall structure is compact and beautiful, with good static stability, reliability and fixed-point positioning. The load can be safely locked according to the specified load, reducing the wellhead load;

[0115] (2) The wireless remote control operation mode is adopted to realize convenient and efficient operation by one person, which improves the safety, reliability and comfort of operation;

[0116] (3) The overturning lifting cylinder and the main frame can be used to quickly switch between the overturning and dumping transportation and the vertical working posture. The lifting device can realize the adaptive wellhead height of the injection head. The multi-degree-of-freedom translation adjustment structure can realize the multi-degree-of-freedom centering adjustment and rapid installation of the injection head and other wellhead devices and the working wellhead. The installation and transportation are convenient, which greatly improves the mechanization degree and working efficiency of the coiled tubing operation.

[0117] (4) The self-elevating derrick device of the coiled tubing operation machine of the present invention can be integrated with the coiled tubing operation machine into a vehicle-mounted structure, the injection head and the drum remain in a state of being connected by a pipe, and the blowout preventer box and the blowout preventer well control equipment are pre-connected with the injection head for integrated transportation, thereby saving the time of disassembling and assembling the wellhead device before and after the operation, avoiding the operational risks of operating under the hoisting injection head, and reducing the labor intensity of the wellhead disassembly and assembly operation and the cost of separate transportation;

[0118] (5) The self-elevating derrick device of the coiled tubing operation machine of the present invention can replace the crane equipment commonly used in coiled tubing operations, saving the high cost of full-time suspension of the crane during coiled tubing operations, reducing the cost of coiled tubing operations, and improving the safety of supporting operations.

[0119] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A self-elevating derrick device for a coiled tubing unit, It is characterized in that include, The derrick body includes a portal main frame installed at the rear of the coiled tubing machine chassis; A tilting and lifting hydraulic cylinder is hinged between the coiled tubing machine chassis and the portal main frame, and is used to adjust the dumping and transportation posture and the vertical lifting posture of the derrick body; The lifting device comprises a lifting main frame, a gear rack structure is arranged between the lifting main frame and the portal main frame, and a lifting driving unit is connected to the lifting main frame; the lifting driving unit is used to drive the lifting main frame to lift and lower along the portal main frame through the gear rack structure; The wellhead mounting frame comprises a bearing mount suspended on the lifting main frame, the bearing mount being provided with a multi-degree-of-freedom translation adjustment structure for connecting the injection head and making the injection head translate to the wellhead; an inclination adjustment cylinder is articulated between the bearing mount and the lifting device to adjust the inclination of the injection head on the bearing mount; The hydraulic control system includes an electric proportional multi-way valve. The lifting drive unit, the tilt adjustment cylinder, and the flip lifting cylinder are all connected to the electric proportional multi-way valve signal. The electric proportional multi-way valve is connected to a signal receiver and controller. The electric proportional multi-way valve can be remotely controlled via a wireless transmitter.

2. The self-elevating derrick device of the coiled tubing unit according to claim 1, It is characterized in that The portal main frame includes two main beams arranged in parallel and at intervals, and the two main beams are connected by a connecting beam; inner grooves are arranged on opposite sides of the two main beams; the rack and pinion structure includes a rack and a gear, and the rack is arranged on one side of the inner groove of each main beam; the gears are respectively arranged on both sides of the lifting main frame, and each gear can be meshed with each rack respectively.

3. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that A guide rail structure is arranged on the other side of the inner groove of each main beam, and a slider structure is arranged on both sides of the lifting main frame respectively, and the slider structure can slide along the guide rail structure.

4. The self-elevating derrick device of the coiled tubing unit according to claim 3, It is characterized in that The first roller bearing assembly and the second roller bearing assembly are respectively arranged on both sides of the lifting main frame; the planes on the opposite sides of the two guide rail structures and the planes on the opposite sides of the two racks are set as main planes, and the planes on the opposite sides of the guide rail structure and the racks are set as side planes; the first roller bearing assembly can be in contact with the main planes of the guide rail structure and the racks on the main beam; the second roller bearing assembly can be in contact with the side planes of the guide rail structure.

5. The self-elevating derrick device of the coiled tubing unit according to claim 4, It is characterized in that The first roller bearing assembly includes a heavy-loaded roller bearing, which is hinged to a first bearing frame via a first pin, and the first bearing frame is connected to the lifting main frame; the second roller bearing assembly includes a supporting roller bearing, which is hinged to a bearing slide, and the bearing slide is connected to the lifting main frame.

6. The self-elevating derrick device of the coiled tubing unit according to claim 3, It is characterized in that The rack comprises a plurality of rack segments connected end to end, and a positioning pin and a positioning block are respectively arranged at two ends of each rack segment.

7. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that External grooves are respectively arranged on the outer sides of the two main beams, and a plurality of pipeline clamps are arranged on one side of the external grooves.

8. The self-elevating derrick device of the coiled tubing unit according to claim 7, It is characterized in that A pedal and a handrail are arranged on the other side of the outer groove.

9. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that A mounting sleeve is provided at the bottom of each main beam and can be hinged to the rear of the continuous pipe machine chassis.

10. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that A tilting cylinder ear seat is arranged on the door-type main frame, and the tilting cylinder ear seat is hinged to one end of the tilting lifting cylinder.

11. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that The lifting drive unit includes a hydraulic motor and a rotary reducer, the rotary reducer is connected to the gear, and the hydraulic motor is connected to the hydraulic control system signal.

12. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that A suspension circular shaft is arranged on the lifting main frame, and the bearing mount is suspended on the suspension circular shaft. The bearing mount can rotate around the suspension circular shaft under the action of the inclination adjusting cylinder to adjust the inclination.

13. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that The multi-degree-of-freedom translation adjustment structure includes a translation seat that can move along the Y direction of the bearing mount, and the Y-direction translation hydraulic cylinder is connected to the translation seat; an injection head seat that can move along the X direction of the bearing mount is provided on the translation seat, and the injection head seat is used to connect the injection head, and the injection head seat is connected to the X-direction translation hydraulic cylinder.

14. The self-elevating derrick device of the coiled tubing unit according to claim 13, It is characterized in that The injection head seat is connected to a blowout preventer support frame extending downward.

15. The self-elevating derrick device of the coiled tubing unit according to claim 2, It is characterized in that Turnover platforms are arranged on both sides of the bearing hanger.

16. The self-elevating derrick device of the coiled tubing unit according to claim 1, It is characterized in that It comprises a guy wire attachment, which comprises a guy wire device, a hydraulic support leg located at the rear of the chassis vehicle, and a derrick support leg located in the middle of the chassis vehicle.

17. A method for using the self-elevating derrick device of a coiled tubing unit according to any one of claims 1 to 16, It is characterized in that In the transport state, the wireless transmitter controls the flipping and lifting cylinder to tilt the derrick body; in the operating state, the self-elevating derrick device of the coiled tubing operation machine is placed at the set position at the wellhead, and the wireless transmitter controls the flipping and lifting cylinder to rotate and lift the derrick body with the injection head to a vertical operating posture. The lifting device is controlled by the wireless remote control to complete the lifting and lowering of the injection head on the wellhead mounting frame, control the multi-degree-of-freedom translation adjustment structure to move in the plane X-axis and Y-axis directions, and control the inclination adjustment cylinder to telescope and adjust the inclination of the wellhead mounting frame and the injection head, and complete the installation of the injection head, wellhead blowout preventer and wellhead centering; after the blowout prevention system action and overall sealing performance test, the coiled tubing operation is carried out.

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