Single-swing-arm adjustable lifting type power catwalk capable of automatically taking and placing tubular columns

Abstract

The invention belongs to the technical field of petroleum drilling and production equipment, and particularly relates to an automatic tubular column taking and placing single-swing-arm adjustable lifting type power catwalk which is characterized by comprising a base, a lifting beam, a swing arm, a lifting oil cylinder, an overturning slide way, a pushing trolley, a chain driving device, a rolling bar, a temporary shelf, a control system, a hydraulic station, a lengthened bracket, a wellhead aligning device and the like. The lifting beam, the swing arm and the base form a similar crank sliding block mechanism, the length of the swing arm is adjustable, and the lifting device is suitable for a drilling machine conveying pipe column with a small drill floor elevation and a large pushing distance. The device is compact in structure, small in occupied area, convenient to install and high in automation degree, automatic control is achieved through an electric control liquid wired or wireless program, drilling of hooking, lifting and pushing of a tubular column to a wellhead is achieved through one-key operation, recycling, lowering and pushing of the tubular column to a shelf for drilling are achieved through one-key operation, and the device can automatically return to a standby station. The pipe column conveying efficiency is effectively improved, the manual labor intensity is reduced, and the device is suitable for various environments such as land and ocean.

Description

Technical Field

[0001] The invention relates to a single-swing-arm adjustable lifting power catwalk for automatically picking up and placing a pipe column, belonging to the technical field of oil drilling equipment. Background Art

[0002] During the oil drilling process, drill pipes, casing and other pipes (each about 9 meters long), totaling more than a thousand, need to be transported from the yard to the drilling floor (drilling). After the well is completed, the pipes are taken out of the well and then transported from the drilling floor to the yard (drilling).

[0003] The main function of the power catwalk is to transport pipes between the yard and the drilling platform. In the prior art, there are many types of power catwalks used in the drilling process, such as the cylinder lifting power catwalk for land drilling rigs, the gear rack power catwalk, the pull-up power catwalk, etc.

[0004] The traditional mechanical catwalk is used in conjunction with the ramp. The site workers install the drill rod lifting wire and protective cap, and the drilling platform workers operate the small winch to drag the drill rod along the catwalk and ramp to the drilling platform. The drilling process is the opposite. The whole process requires manual intervention and other auxiliary equipment, with many steps, low efficiency, high labor intensity and low safety.

[0005] At present, the structure of the power catwalk for drilling is complex and bulky. Most of them retain the ramp structure as the guide rail of the catwalk and increase the structural stability. Some adopt the double swing arm structure, which is suitable for drilling rigs with large height difference of the drilling floor and small forward pushing distance of the drill rod. It is not suitable for offshore module drilling rigs with small height difference of the drilling floor and large pushing distance (more than 6 meters).

[0006] The push trolley configured on the drilling power catwalk is dragged by a wire rope or chain. The trolley cannot be flipped and an independent mechanism must be configured to hook the pipe string. Invention content

[0007] The purpose of the present invention is to provide a power catwalk to solve the above problems, which can meet the requirements of automatic drilling and drilling of pipes with a height difference of 4 meters or less and a pushing distance of 6 meters or more. At the same time, a reversible V-shaped slideway, a rolling push trolley and a chain drive device are proposed.

[0008] The technical solution adopted by the present invention is a single-swing arm adjustable lifting power catwalk for automatic pipe picking and placing, comprising a base, a lifting beam, a swing arm, a lifting cylinder, a flip slide, a pushing trolley, a chain drive device, a roller, a temporary shelf, a control system, a hydraulic station, an extension bracket, a wellhead device, etc. The rear end of the lifting beam is installed in the slide groove of the base through a roller. During operation, the lifting beam can move freely forward and backward along the slide beam, and the front end can be freely placed on the cross beam of the base. The upper end of the swing arm is hinged to the lifting beam, and the lower end is hinged to the base. The upper end of the lifting cylinder is hinged to the swing arm, and the lower end is hinged to the base. The cylinder pushes the swing arm to rotate around the lower end, and the swing arm drives the lifting beam to lift upward and push forward. The flip slide is hinged to the lifting beam at multiple points and can move along the The hinge point is flipped left and right at a certain angle to hook or push out the pipe column. The pushing trolley is clamped on the flip slide by rollers and can move forward and backward in the slide to push or collect the pipe column. The chain drive device is installed on the lifting beam. The chain is hinged under the pushing trolley to form a closed loop chain to drag the trolley forward or backward along the slide. The roller is installed at the front end of the lifting beam to reduce the friction between the pipe column and the flip slide. The temporary shelf for the pipe column is inserted on the base to temporarily place 3 to 4 pipe columns during work. The control system adopts electric control fluid for long-distance wired or wireless remote control operation. The hydraulic station provides hydraulic power for all actions and is installed in the middle of the base frame. The extension bracket is used to extend the flip slide. The wellhead device is used to align the wellhead center during installation.

[0009] Furthermore, the base is an integral frame structure formed by welding rectangular tubes, a horizontal slideway groove is provided at the rear, and a plate eye type hanging point is provided, and a bolt connection ear plate is reserved at the bottom for fixing.

[0010] Optionally, the power catwalk of the present invention can be used in two types at the well site: fixed type and non-fixed type. The fixed type uses pins or bolts to fix the power catwalk of the present invention on the ground foundation, which improves the operation stability, occupies a small area, is suitable for use with offshore drilling rigs, and can be directly fixed on the mechanical catwalk; the non-fixed type is to configure detachable beams, weights, wheels and other accessories on the base to increase the base size, lower the center of gravity, improve stability, and have good mobility, and is suitable for use with land drilling rigs.

[0011] Furthermore, the lifting beam includes a box beam, rollers, connecting plates, etc., which is a spliced ​​box beam structure. Mounting holes for hydraulic motors, rollers, etc. are reserved at the front end, and a pair of unpowered rollers are provided at the rear end. It can move freely back and forth in the horizontal slide groove of the base, and the lifting hinge point is arranged at the front middle part of the lifting beam.

[0012] Furthermore, the lifting cylinder uses a double-acting single-stage cylinder, which is easy to control and runs smoothly.

[0013] Furthermore, the swing arm adopts an "H"-shaped structure with a rectangular tube, which makes lifting more stable and has an adjustable length. When the swing arm is set to different lengths, the power catwalk of the present invention is suitable for use on drilling platforms of different heights.

[0014] Furthermore, the chain drive device includes a hydraulic motor, a driving sprocket, a driven sprocket, a chain, a small sprocket, a supporting wheel, a support, etc. The hydraulic motor is installed at the front end of the lifting beam, the driven sprocket is installed at the rear end of the lifting beam, the small sprocket is evenly installed in the lifting beam, the side panel of the lifting beam has process holes for easy installation, the supporting wheels are evenly installed on the lifting beam, the chain passes around the driving sprocket and the driven sprocket, and is vertically placed on the small sprocket and the supporting wheels, and both ends are connected to the traction device of the pushing trolley, the hydraulic motor reverses and drags the pushing trolley forward and backward in the flip slide, the length center of the chain on the upper side of the chain drive device coincides with the center of the rotation axis of the flip slide, and the chain does not twist or strain when the pushing trolley and the flip slide flip together.

[0015] Furthermore, the pushing trolley includes a bracket, rollers, positioning wheels, a traction device, a rubber plate, etc. The bottom of the pushing trolley is V-shaped, with a V-shaped support plate of a certain length left on the front side, a rubber plate nailed on it to protect the rear end thread of the pipe column, and 4 rollers are installed. It moves frictionlessly on the flip slide. The lower part is a traction device connected to a drive chain and is equipped with a positioning wheel to prevent the trolley from tilting forward after the pipe column falls on the support plate, and flips together with the flip slide during operation.

[0016] Furthermore, the flip slide includes a split mounting seat, a connecting frame, a slide plate, a pipe hook device, a flip cylinder, a pipe blocking device, etc. The slide plate is installed on the connecting frame to form an inverted V-shaped groove structure that is not connected in the middle, such as "\ / ". The pipe hook device is installed on the left side of the slide, and the pipe blocking device and the flip cylinder are installed on the right side of the slide. The flip cylinder extends out of the flip slide and flips to the left along the hinge axis of the split mounting seat to hook the pipe column on the temporary shelf. The flip cylinder retracts the pipe column and automatically rolls it into the slide groove. The reverse operation is performed when the pipe column is pushed out.

[0017] Furthermore, the rolling bar includes a roller and a bracket, which is installed at the front end of the lifting beam and is used to support the front end of the pipe column. When the pipe column slides, it does not rub against the flip slide, thereby protecting the pipe column.

[0018] Furthermore, the hydraulic station includes an oil tank, an electric oil pump, pipe valves, pipelines, a distribution box, etc. The hydraulic station provides hydraulic power for the power catwalk of the present invention, and an external power supply is sufficient. When a drilling rig or a well repairing rig can provide hydraulic power, the hydraulic station may not be configured.

[0019] Furthermore, the control system includes electric control valves, sensors, cables, PLC, hydraulic valves, pipelines, etc., adopts electric control liquid mode, program setting, memory movement trajectory, one-key operation to achieve hooking, lifting, and pushing the pipe string to the wellhead upper pipe operation, one-key operation to achieve recovery, lowering, pushing the pipe string to the shelf and throwing the pipe, automatically returning to the standby station, and reserving external hydraulic interface and communication interface.

[0020] Optionally, the extended bracket includes a bracket, a connecting frame, an elevation cylinder, etc., which are installed at the front end of the lifting beam and share a mounting hole with the roller bar. After the roller bar is removed and the extended bracket is installed, the power catwalk of the present invention can be used for drilling and drilling operations with longer pipes, such as casing. The elevation cylinder is used to push the extended bracket to increase the elevation angle of the pipe, which is beneficial for the hydraulic elevator to grab the pipe.

[0021] Optionally, the temporary shelf includes a shelf body and an adjustment mechanism, which is installed on the left side of the base and is used to temporarily place pipe columns. During transportation, it can be removed and rotated 90 degrees to reduce the size. When the temporary shelf is not in use, other mechanical shelves or power shelves with matching heights can also be used.

[0022] Optionally, the wellhead alignment device includes an infrared transmitter, a receiver, a mounting bracket, etc. The power catwalk of the present invention is configured when used on land to improve the accuracy and efficiency of each wellhead alignment.

[0023] To sum up, the single-swing arm adjustable lifting power catwalk for automatic pipe picking and placing of the present invention has strong applicability compared with the prior art. The offshore drilling rig is installed on the original mechanical catwalk and is permanently used after one installation without adjustment in the middle. The land well repair rig is directly placed on the ground foundation when in use and can be aligned with the wellhead. The pushing trolley described in the present invention is chain-driven, and the movement is reliable and non-slip. The pushing trolley moves in the V-shaped flip slide through rollers, and has good centering and small resistance. The beneficial effects of the present invention are: the power catwalk of the present invention itself has a compact structure, small size, light weight, and is simple and convenient to install; in a simple and practical way, it well solves the problem of automated operation of the upper and lower drilling platforms of the pipe column of a drilling rig well repair rig with a height difference of less than 4 meters and a pushing distance of more than 6 meters. Obviously, it is also applicable when the pushing distance of the upper and lower drilling platforms of the pipe column is less than 6 meters. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a powered catwalk of the present invention;

[0025] Figure 2 Schematic diagram of the power catwalk of the present invention, wherein the swing arm is at its shortest length, the lifting cylinder is fully extended, and the push trolley slides to the front end;

[0026] Figure 3It is a schematic diagram of the power catwalk of the present invention, wherein the swing arm is the longest, the lifting cylinder is fully extended, and the front end of the lifting beam is equipped with an extended bracket and tilted up at a certain angle;

[0027] Figure 4 is a front view of the power catwalk of the present invention;

[0028] Figure 5 It is a front view of the power catwalk of the present invention, wherein the flip slide is tilted to the left to hook the pipe column;

[0029] Figure 6 is a schematic diagram of the base structure;

[0030] Figure 7 It is a schematic diagram of the lifting beam structure;

[0031] Figure 8 It is a schematic diagram of the swing arm structure;

[0032] Fig. 9 is a schematic diagram of a chain drive;

[0033] Fig.10 It is a schematic diagram of a push cart;

[0034] Fig.11 It is a schematic diagram of the flip slide;

[0035] Fig.12 It is a schematic diagram of the rolling bar;

[0036] Fig.13 It is a schematic diagram of the extended bracket;

[0037] Fig.14 A temporary shelf diagram

[0038] Markings in the figure: 1-base, 1.1-guide beam, 1.2-mounting seat, 1.3-connecting seat, 1.4-connecting plate, 1.5-lifting ear, 2-lifting beam, 2.1-fixed plate, 2.2-nut plate, 2.3-nut plate, 2.4-connecting seat, 3-lifting cylinder, 4-swing arm, 4.1-swing arm upper body, 4.2-pin shaft, 4.3 swing arm lower body, 5-chain drive device, 5.1 cluster sprocket, 5.2-positioning sprocket, 5.3-passing wheel, 5.4 chain, 5.5-mounting plate, 5.6-hydraulic motor, 5.7-driving sprocket, 6-push trolley, 6.1-connecting shaft, 6.2 positioning wheel , 6.3-skeleton, 6.4-inclined roller, 6.5-shield, 7-flip slide, 7.1-baffle, 7.2-short slide plate, 7.3-long slide plate, 7.4-hook plate, 7.5-connecting frame, 7.6-extended arm, 7.7-half hoop seat, 8-roller, 8.1-roller, 8.2-bracket, 9-hydraulic station, 10-short pin, 11-long pin, 12-extended bracket, 12.1-mounting frame, 12.2-tilt cylinder, 12.3-bracket, 13-temporary shelf, 13.1-pipe seat, 13.2 shelf body, 13.3-pin, 14-flip cylinder, 15-wellhead device. DETAILED DESCRIPTION

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

[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] In the present invention, the following movable connection is preferably hinged: The lifting side in the length direction of the power catwalk (or the length direction of the base) is the front end, the left hand side when standing at the front end and facing the rear end is the left side, and the right hand side is the right side.

[0042] Embodiment 1 of the present invention, as Figure 1As shown, it includes a base 1, a lifting beam 2, a lifting cylinder 3, a swing arm 4, a chain drive device 5, a pushing trolley 6, a turning slide 7, a roller 8, a hydraulic station 9, a short pin shaft 10, a long pin shaft 11, and a temporary shelf 13. Among them, the lifting beam 2 lies flat on the base 1, the rear end of the beam is embedded in the guide rail of the base 1, and the middle part of the beam is hinged to the swing arm 4 by the short pin shaft 10; the lifting cylinder 3 is hinged to the base 1 and the swing arm 4 by the short pin shaft 10; the flip slide 7 is fixed to the upper surface of the lifting beam 2 by a uniformly distributed bolt group, and hook pipe devices and flip cylinder mounting seats are provided on both sides of the slide, and the flip cylinder is installed on the right side in the figure; the chain drive device 5 is installed on the lifting beam 2, the lower side of the chain is passed through the lifting beam 2 body, and the upper side of the chain is passed through the flip slide 7 connecting frame, and the two ends of the chain are hinged to the lower part of the pushing trolley 6; the pushing trolley 6 is installed in the "V"-shaped groove of the flip slide 7; the roller 8 is hinged at the front end of the lifting beam 2; the hydraulic station is installed in the middle of the base 1; the temporary shelf 13 is installed on the base 1, and is installed on the left side in the figure.

[0043] like Figure 2 As shown, the lifting cylinder 3 is fully extended, pushing the swing arm 4 to an upright position, pushing the front end of the lifting beam 2 and the components installed thereon to a high working position, and the rear end of the lifting beam 2 slides in the guide rail of the base 1, pushing the trolley 6 to move to the front end of the flip slide 7.

[0044] Embodiment 2 of the present invention, as Figure 3 As shown, the rolling bar 8 in the first embodiment is replaced with an extended bracket 12, the push swing arm 4 is adjusted to the longest, the lifting cylinder 3 is fully extended, the push swing arm 4 is pushed to the upright position, the front end of the lifting beam 2 and the components installed thereon are pushed to the working high position, the rear end of the lifting beam 2 slides in the guide rail of the base 1, the push trolley 6 is moved to the front end of the flip slide 7, and the extended bracket 12 is pushed up by the cylinder 12.2.

[0045] like Figure 4 , Figure 5 As shown, it is a front view of the two states of the power catwalk, and the V-shaped groove of the flip slide 7 is flipped by the extension and contraction of the flip cylinder 14. When drilling up, the pipe column is hooked into the V-shaped groove through the hook plate 7.4, and when drilling down, the V-shaped groove flips to make the pipe column roll onto the temporary shelf 13.

[0046] During the drilling operation, the turning cylinder 14 extends to turn the turning slide 7 sideways, and the pipe column on the temporary shelf 13 is hooked by the hook plate 7.4. The turning cylinder 14 retracts, and the pipe column falls into the V-shaped groove of the turning slide 7. The lifting cylinder 3 extends, and the push swing arm 4 drives the lifting beam 2 to the working high position. The hydraulic motor drives the pushing trolley 6 to slide to the front end through the chain drive device 5, and the front end of the pushing pipe column slides out of the V-shaped groove of the turning slide 7, and the pipe column is sent to the designated position at the wellhead of the drilling platform. The hydraulic elevator holds the pipe column and lifts the pipe column to the wellhead along with the traveling lifting system. Then the pushing trolley 6 slides with the pipe column until the pipe column leaves the turning slide 7, and the drilling is completed.

[0047] During the drilling operation, in the high position, the push trolley 6 moves to the front end of the flip slide 7 to receive the pipe column, the traveling hoist system lowers the pipe column, the push trolley 6 slides with the pipe column, and after the pipe column falls into the V-shaped groove of the flip slide 7, the push trolley 6 drives the pipe column to slide down until it completely enters the flip slide 7, the lifting cylinder 3 retracts, driving the swing arm 4 and the lifting beam 2 to the working low position, and the flip cylinder 14 extends to flip the flip slide 7 to make the pipe column roll onto the temporary shelf 13, and the drilling is completed.

[0048] When the roller 8 is replaced with the extended bracket 12, the operation of drilling and drilling throwing is basically the same. When pushing the pipe string, the oil cylinder 12.2 extends / retracts to control the tilting angle of the bracket 12, thereby expanding the applicable drilling platform height of the present invention.

[0049] In summary, when the power catwalk of the present invention is used on an offshore drilling rig, the drilling and drill-dropping operations of the pipe string can be realized, which can effectively save human resources, reduce the operating risks of personnel, and improve the operating efficiency of the drilling rig.

[0050] The above description is only a preferred embodiment of the power catwalk of the present invention, and is not limited to the aforementioned specific implementation. The present invention 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. The above specific embodiments are not limitations of the present invention, and any modifications, modifications or equivalent substitutions made by ordinary technicians in the field according to the above description belong to the protection scope of the present invention.

Claims

1. A single swing arm adjustable lifting power catwalk for automatic pipe picking and placing, used for conveying pipes between the rack and the wellhead, adopting electric control fluid remote wired or wireless remote control, program setting, memory movement trajectory, one-button operation to achieve the operation of hooking, lifting, and pushing the pipe to the wellhead, one-button operation to achieve the operation of recovering, lowering, and pushing the pipe off the rack and throwing the drill, and automatically returning to the standby position, its characteristics are: It includes a base, a lifting beam, a swing arm, a lifting cylinder, a flip slide, a pushing trolley, a chain drive device, a roller, a temporary shelf, a control system, a hydraulic station, an extension bracket, a wellhead device, etc. The rear end of the lifting beam is installed in the slide groove of the base through a roller. During operation, the lifting beam can move freely forward and backward along the slide groove, and the front end can be freely placed on the cross beam of the base. The swing arm is hinged to the lifting beam and the base, and the lifting cylinder is hinged to the swing arm and the base. The cylinder pushes the lifting beam to extend / retract and drives the lifting beam to lift upward and push forward through the swing arm. The flip slide is hinged on the lifting beam and can be flipped left and right at a certain angle to hook or push out the pipe column. The delivery trolley is clamped on the flip slide and moves forward and backward to push or collect the pipe string. The chain drive device is installed on the lifting beam. The chain is hinged to the pushing trolley to form a closed chain link, dragging the trolley to move forward and backward along the slide. The roller is installed at the front end of the lifting beam to reduce the friction between the pipe string and the flip slide. The temporary shelf for the pipe string is inserted on the base to temporarily place 3 to 4 pipe strings during work. The control system adopts electric control fluid long-distance wired or wireless remote control operation. The hydraulic station provides hydraulic power for all actions and is installed in the middle of the base frame. The extension bracket is used to extend the flip slide. The wellhead device is used to align the wellhead center during installation.

2. The single swing arm adjustable lifting power catwalk for automatically picking up and placing pipe columns as claimed in claim 1, characterized in that: By configuring and replacing the lengthened bracket, a longer pipe column transportation distance can be achieved, thereby expanding the scope of application of the patent of the present invention.

3. The single swing arm adjustable lifting power catwalk for automatically picking up and placing pipe columns as claimed in claim 1, characterized in that: Equipped with the wellhead alignment device, when using the patented invention, the wellhead center can be aligned more accurately, and the installation is more convenient and efficient.

4. The swing arm according to claim 1, characterized in that: The rectangular tube is set in an "H"-shaped structure, the pin is hinged, and the length is adjustable in four gears, making the patented invention suitable for pipe column transportation operations with a height difference of less than 4 meters and a pushing distance of more than 6 meters.

5. The flip slide according to claim 1, characterized in that: An inverted V-shaped groove structure with no connection in the middle, such as "\ / ", is adopted, which is hinged on the lifting beam at multiple points and is equipped with a turning cylinder, a pipe hooking device and a pipe blocking device. During operation, the cylinder controls the slide to turn over, hooks the pipe column on the temporary shelf, or automatically pushes the pipe column to the temporary shelf.

6. The push cart according to claim 1, characterized in that: The lower part of the pushing trolley is V-shaped, with a certain length of V-shaped support plate left on the front side. A rubber plate is nailed to protect the rear end thread of the pipe column, and 4 rollers and 1 positioning wheel are installed to prevent the gravity of the pipe column from causing the trolley to tilt forward and rub against the slideway, so that the pushing trolley can move frictionlessly on the flip slideway. The lower part is hinged to the drive chain through a specially designed structure and is equipped with a positioning wheel. During operation, it flips together with the flip slideway, and the chain does not twist or get stuck, and the drive does not slip.

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