Wellhead automatic screwing-on and screwing-off equipment

Abstract

The invention relates to a wellhead automatic screwing-on and screwing-off device which comprises a base, a centralizing device, a thread buckling device and a screwing-on and screwing-off device, and the thread buckling device is installed on the base; the screwing-on and screwing-off device can move front and back, is installed on the base in a positioned mode and is located on the rear side of the thread buckling device. And the centralizing device is erected on the base, is positioned above the thread buckling device and the screwing-on and screwing-off device, and can be overturned forwards and backwards and positioned. The device has the advantages of being compact in structure, reasonable in design and mainly applied to the well mouth connector thread screwing-on and screwing-off operation process of a petroleum drilling and workover site, improving the unmanned and automatic operation degree of a well mouth, solving the problems that in the current screwing-on and screwing-off automatic and unmanned process, the automatic screwing-on and screwing-off success rate is low, and manual assistance is seriously relied on, and improving the working efficiency. The unmanned and automatic operation efficiency of the wellhead pipe rod is improved; and the automation level and the intelligent level of well drilling and workover operation can be improved.

Description

Technical Field

[0001] The invention relates to the field of petroleum automation equipment and intelligent technology, and in particular to a wellhead automatic make-up and break-out device. Background Art

[0002] With the development of modern science and technology and industrial level, oil drilling and repair equipment is also developing in the direction of digitalization, automation and intelligence. In the process of drilling and repairing the pipe string, the unmanned automation of the pipe rod make-up and make-up operation process has always restricted the development of fully automated and intelligent technology for drilling and repairing operations. At present, this operation process mainly relies on "human eyes" manual operation to complete; the entire posture of the pipe rod during transportation and lifting is uncertain, the lifting point at the upper end of the pipe rod is a flexible constraint, and the push-up point at the lower end is not completely fixed. Therefore, the position of the threaded head at the bottom of the pipe rod will fluctuate within a certain range with the disturbance on site, and the position of the threaded head exposed at the bottom of the well will also fluctuate within a range with the influence of other factors in the operation process, which brings great trouble to the mechanized operation of the make-up and make-up process, especially affecting the unmanned automated operation of this process. The threaded joint buckling and make-up and make-up operation process is also a frequently repeated operation process, which makes the labor intensity of the operator very high. Therefore, it is necessary to develop an automatic make-up and make-up equipment at the wellhead to solve the current problems. Summary of the invention

[0003] The invention provides a wellhead automatic make-up and make-out device, aiming to solve the problems in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A wellhead automatic make-up and make-up equipment comprises a base, a straightening device, a threaded fastening device and a make-up and make-up device, wherein the threaded fastening device is mounted on the base; the make-up and make-up device can be moved forwards and backwards and positioned on the base, and is located at the rear side of the threaded fastening device; the straightening device is mounted on the base, and is located above the threaded fastening device and the make-up and make-up device, and can be flipped forwards and backwards and positioned.

[0006] The beneficial effects of the present invention are as follows: during use, the straightening device, the threaded buckle device and the buckle-making device are used to complete the pipe rod lowering and pipe rod raising functions, and the operation is convenient and efficient.

[0007] The invention has a compact structure and a reasonable design, and is mainly used in the threaded make-up and make-out operation process of a wellhead joint at a petroleum drilling and repairing site, thereby improving the degree of unmanned and automated operation of the wellhead, and solving the problem that the automatic make-up and make-out automated and unmanned process has a low success rate in automatic make-up and make-out, and relies heavily on manual assistance, thereby improving the unmanned and automated operation efficiency of the wellhead pipe and rod, and helping to promote the automation and intelligence level of drilling and repairing operations.

[0008] Based on the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, it also includes a support frame, which is fixedly installed on the base; the threaded interlocking device includes a synchronous frame, a pair of telescopic devices and a pair of upper and lower guiding semi-cones, and the synchronous frame is installed on the support frame, which can be moved up and down and positioned; the pair of telescopic devices are relatively fixedly installed on the synchronous frame, and the pair of upper and lower guiding semi-cones are relatively fixedly installed on the telescopic ends of the pair of telescopic devices, and the telescopic movement of the pair of telescopic devices can drive the pair of upper and lower guiding semi-cones to move closer to or away from each other.

[0010] The beneficial effect of adopting the above further scheme is that during the operation, the telescopic device can be used to expand and contract the paired upper and lower guiding semi-cones to form a complete upper and lower conical flares for respectively guiding the upper and lower threaded joints to mate, which is convenient and efficient.

[0011] Furthermore, the pair of upper and lower guide semi-cones present a conical structure with a thin middle portion and thick ends, and upper mudguards are detachably installed on the upper ends of the pair of upper and lower guide semi-cones, and lower mudguard guides are fixedly installed on the lower ends of the pair of upper and lower guide semi-cones.

[0012] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The lower mud guard guide is used to guide the dirt to be discharged downward. The upper mud guard and the lower mud guard guide are provided with pipe rod passing grooves. When the pipe column is lifted, the upper and lower ends of the pipe joint are wrapped to prevent the sludge liquid from splashing.

[0013] Furthermore, the righting device includes a righting rod, a limiting mechanism and a guide wheel mechanism. The righting rod can be flipped forward and backward and is positioned on the top of the support frame, which is located above the synchronization frame; the limiting mechanism and the guide wheel mechanism are respectively installed on the top of the righting rod, and the limiting mechanism is located on the front side of the guide wheel mechanism.

[0014] The beneficial effect of adopting the above further scheme is that during the operation, the pipe rod is straightened by using the straightening rod, and at the same time, a limiting space is formed by using the limiting mechanism and the guide wheel mechanism, which can limit the pipe rod within a certain range.

[0015] Furthermore, the limiting mechanism includes a driving member and a pair of limiting rods, the pair of limiting rods are respectively rotatably installed on the top of the straightening rod through a rotating shaft, and the lower ends of the limiting rods are connected by a connecting rod assembly; the driving member is fixedly installed on the top of the straightening rod, and its telescopic end is connected to the connecting rod assembly. The driving member is telescopic and drives the pair of limiting rods to rotate through the connecting rod assembly until their upper ends are close to or away from each other.

[0016] The beneficial effect of adopting the above further scheme is that during the operation, the driving member uses the connecting rod assembly to drive the pair of limit rods to open and close, thereby limiting the position of the pipe rod during transportation. According to the position of the driving member, the opening size of the forearm of the connecting rod mechanism is controlled to adapt to the posture of the pipe rod during transportation.

[0017] Furthermore, the guide wheel mechanism includes a V-shaped wheel, which is rotatably mounted on the top of the straightening rod via a horizontally arranged central axis; adjustable limiting mechanisms for adjusting the position of the V-shaped wheel are respectively mounted at the positions of the central axis corresponding to the two ends of the V-shaped wheel.

[0018] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and using the special structure of the V-shaped wheel to limit the pipe rod; in addition, two adjustable limiting mechanisms are used to limit the position of the V-shaped wheel on the central axis.

[0019] Furthermore, the buckle-up and unbuckling device includes a hydraulic tongs, a tongs support plate and a sliding plate, wherein the sliding plate can be moved horizontally forward and backward and is positioned on the base; the tongs support plate is horizontally installed above the sliding plate, and is connected to the sliding plate for up and down movement through a plurality of lifting guide columns; the hydraulic tongs is fixedly installed on the tongs support plate.

[0020] The beneficial effect of adopting the above further scheme is that during the operation, the sliding plate can drive the hydraulic tongs and the tongs support plate to move forward and backward on the base, and at the same time, multiple lifting guide columns can be used to realize the up and down movement of the hydraulic tongs to facilitate the pipe rod buckling operation.

[0021] Furthermore, it also includes four support legs with adjustable heights, and the four support legs are distributed opposite to each other in pairs; the base includes a pedestal, and the pedestal is located in the area enclosed by the four support legs, and the two sides of the rear end thereof are respectively connected and positioned by vertical sliding sleeves 1 for sliding up and down with two of the support legs; transverse sliding sleeves are fixedly installed relatively horizontally on both sides of the pedestal, and transverse shafts are installed in the two transverse sliding sleeves for sliding and positioning respectively; vertical sliding sleeves 2 are provided on the sleeves that can slide up and down and be positioned on the remaining two support legs, and the two vertical sliding sleeves 2 are respectively fixedly connected to one end of the two transverse shafts.

[0022] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the height of the whole equipment can be adjusted by using four supporting legs to meet different operations;

[0023] In addition, the front and rear positions of the hydraulic tongs can be adjusted by using two transverse shafts and two transverse sleeves to facilitate operation.

[0024] Furthermore, it also includes a lower reinforcement frame, which includes a rear beam, two side telescopic beams and four connecting blocks, and the four connecting blocks are respectively positionable sliding sleeves provided on the four supporting legs; the rear beam is horizontally arranged between two of the supporting legs, and its two ends are respectively fixedly connected to the corresponding two connecting blocks; the two side telescopic beams are horizontally arranged opposite to each other, and they are respectively located below the two transverse sliding sleeves and are respectively parallel to the two transverse sliding sleeves, and the two ends of the two side telescopic beams are respectively fixedly connected to the four connecting blocks.

[0025] The beneficial effects of adopting the above further scheme are simple structure and reasonable design. The lower reinforcement frame can be used to increase the strength of the four supporting legs. At the same time, the telescopic movement of the two side telescopic beams is used to adapt to the sliding connection between the two transverse axes and the two transverse sliding sleeves, which is easy to adjust.

[0026] Furthermore, it also includes two half-clamping devices, which are relatively installed on the base and can be horizontally moved and positioned closer to or farther from each other to clamp or loosen the wellhead flange.

[0027] The beneficial effect of adopting the above further solution is that during assembly, two half-clamping devices are used to clamp the wellhead flange so as to position the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the righting device in the present invention;

[0030] Figure 3 It is a structural schematic diagram of the thread fastening device in the present invention;

[0031] Figure 4 It is a structural schematic diagram of the buckle-up and buckle-down device in the present invention;

[0032] Figure 5 It is a structural schematic diagram of the base in the present invention;

[0033] Figure 6 It is a partial cross-sectional view of the support seat in the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0035] 1. Righting device; 1.1. Righting rod; 1.1.1. Connector; 1.1.2. Bottom hinge hole; 1.2. Limiting mechanism; 1.2.1. Limiting rod; 1.2.2. Driving member; 1.3. Guide wheel mechanism; 1.3.1. Center axis; 1.3.2. V-shaped wheel; 1.3.3. Adjustable limiting mechanism; 2. Push-pull driving device; 3. Threaded buckle device; 3.1. Synchronous frame; 3.1.1. Guide rail connecting plate; 3.1.2. Connecting seat 2; 3.2. Telescopic device; 3.3. Upper and lower guiding semi-cones; 3.3.1. Upper mud guard; 3.3.2. Lower mud guard guide; 4. Support frame; 4.1. Ear seat; 4.2. Rotating connector; 4.3. Connecting seat 1; 5. Guide rail pair 1; 6. Upper and lower buckle device; 6.1. Hydraulic tongs; 6.2. Lifting Guide column; 6.3, large clamp support plate; 6.4, sliding plate; 6.5, telescopic connection ear; 6.6, pipe rod groove; 7, base; 7.1, pedestal; 7.1.1, guide rail connection; 7.2, horizontal sleeve; 7.3, vertical sleeve one; 7.4, groove space; 8, horizontal support leg; 8.1, horizontal axis; 8.2, vertical sleeve two; 9, semi-clamping device; 9.1, V-block; 9.2, connecting screw; 9.3, position indicator block; 9.4, shell; 10, lower reinforcement frame; 10.1, connecting block; 10.2, rear beam; 10.3, side telescopic beam; 11, threaded buckle device lifting control device; 12, upper and lower buckle device telescopic control device; 13, guide rail pair two; 14, support leg; 14.1, support rod; 14.2, ball head shaft; 14.3, pad. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0040] Example 1

[0041] like Figures 1 to 6 As shown, this embodiment provides an automatic make-up and make-up device at a wellhead, comprising a base 7, a straightening device 1, a threaded fastening device 3 and a make-up and make-up device 6, wherein the threaded fastening device 3 is installed on the base 7; the make-up and make-up device 6 can be moved forward and backward and positioned on the base 7, and is located on the rear side of the threaded fastening device 3; the straightening device 1 is mounted on the base 7, and is located above the threaded fastening device 3 and the make-up and make-up device 6, and can be flipped forward and backward and positioned.

[0042] During use, the straightening device 1, the threaded fastening device 3 and the fastening and unfastening device 6 are used to complete the pipe rod lowering and pipe rod lifting functions, which is convenient and efficient.

[0043] This embodiment has a compact structure and a reasonable design. It is mainly used in the threaded make-up and make-out operation process of the wellhead joint at the oil drilling and repair site, improves the degree of unmanned and automated operation of the wellhead, solves the problem of low automatic make-up and make-out success rate and heavy reliance on manual assistance in the current automated and unmanned process, improves the unmanned and automated operation efficiency of the wellhead pipe and rod, and helps to promote the automation and intelligence level of drilling and repair operations.

[0044] Example 2

[0045] On the basis of Example 1, this embodiment also includes a support frame 4, which is fixedly mounted on the base 7; the threaded fastening device 3 includes a synchronous frame 3.1, a pair of telescopic devices 3.2 and a pair of upper and lower guiding semi-cones 3.3, and the synchronous frame 3.1 is mounted on the support frame 4, which can be moved up and down and positioned; the pair of telescopic devices 3.2 are relatively fixedly mounted on the synchronous frame 3.1, and the pair of upper and lower guiding semi-cones 3.3 are relatively fixedly mounted on the telescopic ends of the pair of telescopic devices 3.2, and the telescopic movement of the pair of telescopic devices 3.2 can drive the pair of upper and lower guiding semi-cones 3.3 to move closer to or away from each other.

[0046] During the operation, the telescopic device 3.2 is extended and retracted to make the paired upper and lower guiding semi-cones 3.3 merge into a complete upper and lower conical flares for guiding the upper and lower threaded joints to buckle, which is convenient and efficient.

[0047] Preferably, in this embodiment, the support frame 4 is in a U-shaped frame structure as a whole, with its opening side facing the front and penetrating from top to bottom.

[0048] Preferably, in this embodiment, guide rail connecting plates 3.1.1 are relatively fixedly installed on the left and right sides of the above-mentioned synchronous frame 3.1; guide rail pairs 5 are relatively vertically fixedly installed on both sides of the support frame 4, and the two guide rail connecting plates 3.1.1 are slidably connected to the two guide rail pairs 5 respectively.

[0049] In addition, a connection seat 1 4.3 is fixedly connected to the support frame 4, and a connection seat 2 3.1.2 is fixedly connected to the synchronous frame 3.1. A threaded buckle device lifting control device 11 is vertically arranged between the connection seat 1 4.3 and the connection seat 2 3.1.2. The two ends of the threaded buckle device lifting control device 11 (preferably a hydraulic cylinder in the prior art) are respectively fixedly connected to the connection seat 1 4.3 and the connection seat 2 3.1.2. During operation, the threaded buckle device lifting control device 11 is used to drive the synchronous frame 3.1 to move up and down on the support frame 4.

[0050] Preferably, in this embodiment, the two telescopic devices 3.2 are preferably hydraulic cylinders in the prior art, and the two hydraulic cylinders are relatively fixedly installed on the synchronous frame 3.1, and their telescopic ends are relatively telescopic and fixedly connected to the two upper and lower guiding semi-cones 3.3 respectively.

[0051] Example 3

[0052] On the basis of Example 2, in this embodiment, the pair of upper and lower guiding semi-cones 3.3 present a conical structure with a thin middle portion and thick ends, and the upper ends of the pair of upper and lower guiding semi-cones 3.3 are respectively detachably installed with upper mudguards 3.3.1, and the lower ends of the pair of upper and lower guiding semi-cones 3.3 are respectively fixedly installed with lower mudguard guides 3.3.2.

[0053] The scheme has a simple structure and reasonable design. The lower mud guard guide 3.3.2 is used to guide the dirt to be discharged downward. The upper mud guard 3.3.1 and the lower mud guard guide 3.3.2 are provided with pipe rod passing grooves to cover the upper and lower ends of the pipe joint when the pipe column is lifted to prevent the mud liquid from splashing.

[0054] Preferably, in this embodiment, the two upper and lower guiding semi-cones 3.3 are respectively in the form of conical funnel-shaped structures, and when the two are combined together, they form a complete conical funnel-shaped structure.

[0055] Preferably, in this embodiment, the two upper fenders 3.3.1 are respectively in a semicircular plate-shaped structure, and semicircular holes for the pipe rod to pass through are arranged at the centers of the opposite sides thereof.

[0056] In addition, the two lower mud guard guides 3.3.2 are combined to form a conical funnel-shaped structure.

[0057] Example 4

[0058] On the basis of any one of Examples 2 to 3, in this embodiment, the righting device 1 includes a righting rod 1.1, a limiting mechanism 1.2 and a guide wheel mechanism 1.3; the righting rod 1.1 can be flipped forward and backward and positioned on the top of the support frame 4, which is located above the synchronization frame 3.1; the limiting mechanism 1.2 and the guide wheel mechanism 1.3 are respectively installed on the top of the righting rod 1.1, and the limiting mechanism 1.2 is located on the front side of the guide wheel mechanism 1.3.

[0059] During the operation, the pipe rod is straightened by the straightening rod 1.1, and a limiting space is formed by the limiting mechanism 1.2 and the guide wheel mechanism 1.3, so that the pipe rod can be limited within a certain range.

[0060] Preferably, in this embodiment, the above-mentioned straightening rod 1.1 is an overall U-shaped structure, and bottom hinge holes 1.1.2 are relatively fixedly installed on both sides of its open end. The two bottom hinge holes 1.1.2 are rotatably connected to the ear seats 4.1 fixedly installed on both sides of the upper side of the support frame 4 through the rotating shaft.

[0061] In addition, the middle part of both sides or one side of the straightening rod 1.1 is relatively fixedly connected with a connecting head 1.1.1, and the two connecting heads 1.1.1 are respectively rotatably connected to the telescopic ends of the two pushing and supporting drive devices 2, and the tail ends of the two pushing and supporting drive devices 2 are respectively rotatably connected to the two sides of the support frame 4 through the rotating connecting heads 4.2.

[0062] Moreover, the above-mentioned limiting mechanism 1.2 and guide wheel mechanism 1.3 are respectively distributed at the closed ends of the righting rod 1.1.

[0063] Example 5

[0064] On the basis of Example 4, in this embodiment, the limiting mechanism 1.2 includes a driving member 1.2.2 and a pair of limiting rods 1.2.1, and the pair of limiting rods 1.2.1 are respectively rotatably installed on the top of the straightening rod 1.1 through a rotating shaft, and their lower ends are connected by a connecting rod assembly; the driving member 1.2.2 is fixedly installed on the top of the straightening rod 1.1, and its telescopic end is connected to the connecting rod assembly. The driving member 1.2.2 is telescopic and drives the pair of limiting rods 1.2.1 to rotate through the connecting rod assembly until their upper ends are close to or away from each other.

[0065] During operation, the driving member 1.2.2 utilizes the connecting rod assembly to drive the pair of limit rods 1.2.1 to open and close, thereby limiting the position of the pipe rod during transportation. According to the moving position of the driving member 1.2.2, the opening size of the forearm of the connecting rod mechanism is controlled to adapt to the posture of the pipe rod during transportation.

[0066] Preferably, in this embodiment, the driving member 1.2.2 is preferably a hydraulic cylinder in the prior art.

[0067] In addition, the connecting rod assembly includes five connecting rods, which are rotatably connected end to end in sequence, the telescopic end of the driving member 1.2.2 is rotatably connected to the center of the connecting rod located in the middle, and the ends of the two connecting rods at the ends that are away from each other are rotatably connected to the corresponding ends of the two limit rods 1.2.1. When in use, the driving member 1.2.2 is telescopic, and the connecting rod drives the pair of limit rods 1.2.1 to open and close.

[0068] Example 6

[0069] On the basis of any one of Examples 4 to 5, in this embodiment, the guide wheel mechanism 1.3 includes a V-shaped wheel 1.3.2, and the V-shaped wheel 1.3.2 is rotatably installed on the top of the straightening rod 1.1 through a horizontally arranged central axis 1.3.1; adjustable limiting mechanisms 1.3.3 for adjusting the position of the V-shaped wheel 1.3.2 are respectively installed at the positions of the central axis 1.3.1 corresponding to the two ends of the V-shaped wheel 1.3.2.

[0070] This solution has a simple structure and a reasonable design. The special structure of the V-shaped wheel 1.3.2 is used to limit the pipe rod. In addition, two adjustable limiting mechanisms 1.3.3 are used to limit the position of the V-shaped wheel 1.3.2 on the central axis 1.3.1.

[0071] Preferably, in this embodiment, the V-shaped wheel 1.3.2 preferably has a structure with thick ends and a thin middle portion.

[0072] Preferably, in this embodiment, the central shaft 1.3.1 is horizontally fixedly mounted on the closed end of the straightening rod 1.1, the V-shaped wheel 1.3.2 is coaxially sleeved on the central shaft 1.3.1, and the V-shaped wheel 1.3.2 can rotate around the central shaft 1.3.1.

[0073] In addition, the two adjustable limiting mechanisms 1.3.3 are preferably limiting nuts, and the two ends of the central shaft 1.3.1 are respectively provided with threaded sections, and the two limiting nuts are respectively threadedly sleeved on the two threaded sections. When in use, the position of the two limiting nuts is manually adjusted to adjust the position of the V-shaped wheel 1.3.2 on the central shaft 1.3.1.

[0074] Example 7

[0075] On the basis of the above embodiments, in this embodiment, the buckle-up and unbuckling device 6 includes a hydraulic tongs 6.1, a tongs support plate 6.3 and a sliding plate 6.4; the sliding plate 6.4 can be horizontally moved forward and backward and is positioned on the base 7; the tongs support plate 6.3 is horizontally installed above the sliding plate 6.4, and is connected to the sliding plate 6.4 for up and down movement through a plurality of lifting guide columns 6.2; the hydraulic tongs 6.1 is fixedly installed on the tongs support plate 6.3.

[0076] During the operation, the sliding plate 6.4 can drive the hydraulic tongs 6.1 and the tongs support plate 6.3 to move forward and backward on the base 7, and at the same time, the hydraulic tongs 6.1 can be moved up and down by using a plurality of lifting guide columns 6.2 to facilitate the pipe rod buckling operation.

[0077] Preferably, in this embodiment, the above-mentioned large clamp support plate 6.3 and sliding plate 6.4 are preferably rectangular plate structures respectively.

[0078] Preferably, in this embodiment, there are four lifting guide pillars 6.2, and the four lifting guide pillars 6.2 respectively include a hydraulic cylinder and a sleeve with an open lower end and a closed upper end. The four sleeves are respectively vertically fixedly installed at the four corners of the tong support plate 6.3, and their lower ends are respectively fixedly connected to the tong support plate 6.3 through flanges; the four hydraulic cylinders are respectively vertically fixedly installed at the four corners of the sliding plate 6.4, and their telescopic ends extend vertically upward and pass through the tong support plate 6.3 and then extend into the four sleeves, and the telescopic ends of the four hydraulic cylinders are respectively fixedly connected to the top walls in the four sleeves. When in use, the four hydraulic cylinders are used to telescope and drive the tong support plate 6.3 and the hydraulic tongs 6.1 thereon to move up and down.

[0079] Preferably, in this embodiment, a pipe rod groove 6.6 is provided on the front side of the hydraulic tongs 6.1.

[0080] It should be noted that the above-mentioned hydraulic tongs 6.1 adopt the existing technology, and its specific structure and principle will not be described in detail here.

[0081] Example 8

[0082] On the basis of the above embodiments, the present embodiment further includes four support legs 14 with adjustable heights, and the four support legs 14 are arranged opposite to each other in pairs; the base 7 includes a base 7.1, and the base 7.1 is located in the area enclosed by the four support legs 14, and the two sides of the rear end thereof are respectively connected and positioned by vertical sliding sleeves 1 7.3 for sliding up and down with two of the support legs 14; horizontal sliding sleeves 7.2 are fixedly installed on both sides of the base 7.1 relatively horizontally, and horizontal shafts 8.1 are installed in the two horizontal sliding sleeves 7.2 for sliding and positioning respectively; vertical sliding sleeves 2 8.2 are provided on the remaining two support legs 14 for sliding up and down and positioning, and the two vertical sliding sleeves 2 8.2 are respectively fixedly connected to one end of the two horizontal shafts 8.1.

[0083] The solution has a simple structure and a reasonable design. The height of the entire device can be adjusted by using four supporting legs 14 to meet different operations.

[0084] In addition, the two transverse shafts 8.1 and the two transverse sleeves 7.2 can be used to adjust the front and rear positions of the two front support legs 14 to adapt to the well site installation environment for easy operation.

[0085] Based on the above solution, each transverse axis 8.1 and the corresponding second vertical sliding sleeve 8.2 form a transverse leg 8.

[0086] Preferably, in this embodiment, two guide rail connections 7.1.1 are relatively fixedly installed on the above-mentioned base 7.1, and the two guide rail connections 7.1.1 extend in the front-rear direction respectively, and guide rail pairs 13 are fixedly installed thereon respectively, and sliders are slidably connected to the two guide rail pairs 13 respectively, and the sliding plate 6.4 is fixedly connected to the two sliders.

[0087] In addition, a groove space 7.4 for operation is provided on the front side of the base 7.1.

[0088] Preferably, in this embodiment, a connecting and disconnecting device telescopic control device 12 (using a hydraulic cylinder in the prior art) is also fixedly mounted on the base 7.1, and a telescopic connecting ear 6.5 is fixedly connected to the sliding plate 6.4, and the telescopic end of the connecting and disconnecting device telescopic control device 12 is telescopically moved forward and backward and is fixedly connected to the telescopic connecting ear 6.5. When in use, the connecting and disconnecting device telescopic control device 12 is telescopically moved and drives the sliding plate 6.4 to move forward and backward.

[0089] Preferably, in this embodiment, each vertical sliding sleeve 1 7.3 and each vertical sliding sleeve 2 8.2 are positioned in the following manner: a plurality of through positioning holes are evenly spaced from top to bottom on the four supporting legs 14, and a pair of through holes are respectively provided on each vertical sliding sleeve 1 7.3 and each vertical sliding sleeve 2 8.2. When in use, the base 7.1 is moved until the corresponding positioning holes on the four supporting legs 14 are connected to the pair of through holes on the two vertical sliding sleeves 1 7.3 and the two vertical sliding sleeves 2 8.2, and then four latches are manually inserted into the through holes on the two vertical sliding sleeves 1 7.3 and the two vertical sliding sleeves 2 8.2 to fix the base 7.1.

[0090] In addition, the two transverse sleeves 7.2 are provided with multiple pairs of through holes evenly spaced along their own axial direction, and the two transverse shafts 8.1 are provided with penetrating positioning holes. When in use, the two transverse shafts 8.1 are manually moved until the positioning holes on them are connected with the corresponding pair of through holes on the two transverse sleeves 7.2, and then the two latches are respectively inserted into the two pairs of through holes and the two positioning holes to achieve positioning.

[0091] Preferably, in this embodiment, the specific structure of each support leg 14 is as follows: each support leg 14 includes a support rod 14.1, a ball shaft 14.2 and a pad 14.3, the two vertical sliding sleeves 1 7.3 and the two vertical sliding sleeves 2 8.2 are respectively sleeved on the four support rods 14.1; the pad 14 is horizontally arranged below the support rod 14.1, the ball shaft 14.2 is arranged between the pad 14.3 and the support rod 14.1, the upper end of which is threadedly connected to the support rod 14.1, and the lower end of which is movably connected to the pad 14.3. When in use, the distance between the pad 14.3 and the support rod 14.1 can be adjusted by manually rotating the ball shaft 14.2, thereby adjusting the height of the entire support leg 14.

[0092] Example 9

[0093] On the basis of Example 8, this embodiment further includes a lower reinforcing frame 10, which includes a rear beam 10.2, two side telescopic beams 10.3 and four connecting blocks 10.1, and the four connecting blocks 10.1 are respectively arranged on the four supporting legs 14 in a positionable sliding sleeve; the rear beam 10.2 is horizontally arranged between two of the supporting legs 14, and its two ends are respectively fixedly connected to the corresponding two connecting blocks 10.1; the two side telescopic beams 10.3 are horizontally arranged opposite to each other, and are respectively located below the two transverse sliding sleeves 7.2 and are respectively parallel to the two transverse sliding sleeves 7.2, and the two ends of the two side telescopic beams 10.3 are respectively fixedly connected to the four connecting blocks 10.1.

[0094] This solution has a simple structure and reasonable design. The lower reinforcing frame 10 can be used to increase the strength of the four supporting legs 14. At the same time, the two side telescopic beams 10.3 are telescopically adapted to the sliding connection between the two transverse shafts 8.1 and the two transverse sliding sleeves 7.2, which is easy to adjust.

[0095] Preferably, in this embodiment, the positioning method between the four connecting blocks 10.1 and the four supporting legs 14 is the same as the positioning structure between the two vertical sliding sleeves 1 7.3 and the two vertical sliding sleeves 2 8.2 and the four supporting legs 14.

[0096] Preferably, in this embodiment, the specific structure of the two side telescopic beams 10.3 is as follows: the two side telescopic beams 10.3 respectively include a sleeve and a telescopic rod, the two telescopic rods are horizontally relatively distributed, and one end of each is fixedly connected to the corresponding two connecting blocks 10.1; the two sleeves are respectively slidably mounted on the two telescopic rods, and one end of each is fixedly connected to the remaining two connecting blocks 10.1.

[0097] In addition, the two telescopic rods are respectively provided with through positioning holes, and the two outer sleeves are respectively provided with multiple pairs of through holes evenly spaced along their length direction. When in use, the two outer sleeves are manually slid to the corresponding pair of through holes to be connected to the two positioning holes, and the two latches are respectively inserted into the two positioning holes and the two pairs of through holes.

[0098] Example 10

[0099] On the basis of any one of Embodiments 8 to 9, this embodiment further comprises two half-card devices 9, which are relatively mounted on the base 7.1.

[0100] On the wellhead flange, they can be moved horizontally and positioned closer or farther away from each other to clamp or loosen the wellhead flange.

[0101] During assembly, two half clamping devices 9 are used to clamp the wellhead flange so as to position the entire device.

[0102] Preferably, in this embodiment, the two half-clamping devices 9 respectively include a V-shaped block 9.1, a connecting screw 9.2 and a housing 9.4. The two housings 9.4 are relatively fixedly installed on the front side of the base 7.1. The two connecting screws 9.2 respectively penetrate the two housings 9.4 and are respectively threadedly connected to the two housings 9.4. The two V-shaped blocks 9.1 are relatively distributed between the two housings 9.4, and their ends away from each other are respectively rotatably connected to the opposite ends of the two connecting screws 9.2. When in use, the two connecting screws 9.2 are manually rotated to clamp the wellhead flange between the two V-shaped blocks 9.1.

[0103] In addition, the front sides of the two shells 9.4 are oppositely provided with through strip openings, and one side of the two strip openings is provided with scale lines along the length direction thereof; position indicating blocks 9.3 are slidably installed at the two strip openings, and one end of the two position indicating blocks 9.3 respectively extends into the two shells 9.4 and is respectively sleeved on the two connecting screws 9.2, and can respectively rotate around the two connecting screws 9.2 but cannot extend to the axial movement of the two connecting screws 9.2.

[0104] The working principle of the present invention is as follows:

[0105] (1) Pipe rod operation:

[0106] Before operation, the entire device is adjusted and installed at the wellhead by the semi-clamping device 9 and the supporting leg 14. The initial state of the device is that the threaded buckle device 3 is raised, the upper and lower guiding semi-cones 3.3 are retracted and opened, the upper mud guard 3.3.1 and the lower mud guard guide 3.3.2 are not installed on the upper and lower guiding semi-cones 3.3, the upper unbuckling device 6 is retracted to the rear of the base 7, the straightening device 1 is retracted, and the limit mechanism 1.2 is opened. The pipe rod is lifted by the lifting card until the bottom of the pipe rod does not leave the ground. The straightening device 1 is driven by the push-support drive device 2 to move forward until it is within the limit space 1.4, and the limit The mechanism 1.2 starts to close to position I, the elevator continues to lift the pipe rod to a certain height, the push-pull drive device 2 drives the straightening device 1 to retract to the center of the pipe rod to the center of the wellhead, and the limit mechanism 1.2 continues to close to position II; a pair of upper and lower guide semi-cones 3.3 are closed under the drive of the telescopic device 3.2 to form a complete upper and lower cone cavity, and the threaded buckle device lifting control device 11 drives the threaded buckle device 3 to descend until the lower cone cavity of the complete upper and lower cone cavity formed by the pair of upper and lower guide semi-cones 3.3 captures the lower joint at the bottom of the wellhead, and the elevator lowers the pipe rod, and the bottom joint of the pipe rod is within the limit. Under the action of the positioning mechanism 1.2, it moves downward to the upper cone cavity of the complete upper and lower cone cavity formed by a pair of upper and lower guiding semi-cones 3.3, and then is guided to the lower joint by the upper cone cavity to complete the joint buckling; after the buckling is completed, the upper and lower guiding semi-cones 3.3 are retracted under the drive of the telescopic device 3.2, and the thread buckling device 3 is raised under the drive of the thread buckling device lifting control device 11, and then the upper and lower buckling device 6 is extended forward under the drive of the upper and lower buckling device telescopic control device 12 until the jaws of the hydraulic tongs 6.1 and the center of the pipe rod groove 6.6 reach the center of the wellhead, and at the same time, the hydraulic is pushed by the lifting guide column 6.2. The hydraulic tongs 6.1 are raised to the specified position, the hydraulic tongs 6.1 complete the pipe rod make-up operation under the control of the electro-hydraulic control system, and the hydraulic tongs 6.1 complete the notch alignment after the make-up and break-out. The make-up and break-out device 6 is retracted under the drive of the make-up and break-out device telescopic control device 12, the limit mechanism 1.2 is opened, and the straightening device 1 is retracted under the drive of the push-support drive device 2, thus completing the pipe string lowering operation process of one pipe rod, and this process is continuously cycled; the entire pipe string lowering process is completed by the automatic control program, which can make the entire operation process highly automated, unmanned and intelligent.

[0107] (2) Pipe lifting operation:

[0108] Before the operation, the entire device is adjusted and installed at the wellhead by the semi-clamping device 9 and the supporting leg 14. The initial state of the device is that the threaded buckle device 3 is raised, the upper and lower guiding semi-cones 3.3 are retracted and opened, the upper mud guard 3.3.1 and the lower mud guard guide 3.3.2 are installed on the upper and lower guiding semi-cones 3.3, the upper and lower buckle device 6 is retracted to the rear of the base 7, the straightening device 1 is retracted, and the limit mechanism 1.2 is opened. The pipe rod is lifted by the elevator until the pipe rod joint reaches the specified height of the wellhead, the wellhead slip is closed, and the pipe rod is seated on the wellhead. The upper and lower buckle device 6 is driven by the upper and lower buckle device telescopic control device 12, and extends forward until the jaws of the hydraulic tongs 6.1 and the center of the pipe rod groove 6.6 reach the center of the wellhead. At the same time, the hydraulic tongs 6.1 are raised to the specified position by the lifting guide column 6.2. The hydraulic tongs 6.1 completes the buckling operation on the pipe rod under the control of the electro-hydraulic control system, and the hydraulic tongs 6.1 completes the gap alignment after completing the buckling. The telescopic control device 12 of the upper and lower buckling device drives the lower to retract, and the lifting control device 11 of the threaded buckle device drives the threaded buckle device 3 to descend to the specified position. A pair of upper and lower guiding semi-cones 3.3 are closed under the drive of the telescopic device 3.2 to form a complete inner cavity, which surrounds the already disconnected threaded joint. The elevator is lifted so that the pipe rod joint is separated and cannot be separated from the upper and lower guiding semi-cones 3.3 to form an inner cavity until there is no dirt splashing. The straightening device 1 is driven by the pushing and supporting driving device 2 to move forward until it is within the limit space 1.4. At this point, the pair of upper and lower guiding semi-cones 3.3 retract, the threaded buckle device 3 rises, the straightening device 1 continues to push the pipe rod to the front end, the elevator lowers the pipe rod until the pipe rod lands, and the pushing and supporting driving device 2 drives the straightening device 1 to retract, thereby completing the operation process of lifting a pipe rod. This process is continuously repeated, and the entire pipe lifting process is completed by an automatic control program, which can make the entire operation process highly automated, unmanned, and intelligent.

[0109] The main idea and method of the present invention is that the device first pushes and limits the pipe rod through a limiting mechanism with adaptive ability during the fastening process. During the pushing and supporting process, the limiting mechanism allows the pipe rod limiting space to adapt to the pipe rod posture and adjust its limiting space size under the closed-loop control of the driving device, so that the limited pipe rod has a certain range of movement. The upper conical funnel of the threaded fastening device is matched in the limiting space, so that the lower end of the pipe rod enters the bottom threaded joint along the edge of the conical funnel to complete the fastening, and then the fully automatic fastening and unfastening device completes the threaded fastening. After the fastening is completed, the fastening and unfastening device can automatically return to its position to make way for the pipe rod channel, so that the fastening and unfastening device can be retracted; the threaded fastening device can not only form an upper conical funnel but also A lower conical inverted funnel is formed which is concentric with the upper conical funnel and is used to capture the lower joint of the pipe rod. The upper and lower conical funnels of the threaded buckle device are composed of a pair of upper and lower guiding semi-cones which are separated and merged. The installation and positioning of the entire device adopts a design concept that can adapt to the wellhead environment. The semi-card device is used to find and lock the wellhead center and the device center position and align them. The retractable lateral legs on both sides avoid the wellhead manifold and other important devices through their retracted positions. The lifting and fine-tuning support legs make the device adapt to different wellhead environments and heights, making the device's on-site use environment wider and adapting to more operating environments. At the same time, combined with the device's electro-hydraulic control system and corresponding sensors, the device's automation and intelligence level is improved.

[0110] The purpose of the present invention is to develop an unmanned automatic make-up and make-up device and method for use in the process of drilling and workover operations according to the on-site operation characteristics of oil drilling and workover equipment and the related technical difficulties encountered. In the make-up process, the device first pushes and limits the pipe rod through a limit mechanism with adaptive ability. In the pushing and supporting process, the limit mechanism allows the pipe rod limit space to adapt to the pipe rod posture and adjust its limit space size under the closed-loop control of the driving device. The upper conical funnel of the threaded make-up device can complete the make-up in the limit space, and the threaded make-up and make-up device completes the threaded make-up; the threaded make-up device can not only form an upper conical funnel, but also form a threaded joint. At the same time, a lower conical inverted funnel concentric with the upper conical funnel is also formed to capture the lower joint of the pipe rod; the installation and positioning of the entire device adopts a design concept that can adapt to the wellhead environment. The semi-card device is used to find and lock the wellhead center and the center of the device and align them. The retractable lateral legs on both sides avoid the wellhead manifold and other important devices through their retracted position. The support legs can be raised and lowered and fine-tuned to make the device adapt to different wellhead environments and heights, making the device's on-site use environment wider and adapting to more operating environments; at the same time, combined with the device's electro-hydraulic control system and corresponding sensors, the device's automation and intelligence level is improved.

[0111] The present invention is mainly used in the threaded make-up and make-out operation process of the wellhead joint at the oil drilling and repair site, improves the degree of unmanned and automated operation of the wellhead, solves the problem that the automatic make-up and make-out automated and unmanned process has a low success rate in automatic make-up and make-out and is heavily dependent on manual assistance, improves the unmanned and automated operation efficiency of the wellhead pipe and rod, and helps to promote the automation and intelligence level of drilling and repair operations.

[0112] It should be noted that all electronic components involved in the present invention adopt the existing technology, and the above-mentioned components are electrically connected to the controller, and the control circuit between the controller and each component is the existing technology.

[0113] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0114] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wellhead automatic make-up and make-out device, characterized by: The invention comprises a base (7), a straightening device (1), a threaded fastening device (3) and a bolt-on / off device (6), wherein the threaded fastening device (3) is mounted on the base (7); the bolt-on / off device (6) is mounted on the base (7) so as to be movable forward and backward and positioned, and is located at the rear side of the threaded fastening device (3); the straightening device (1) is mounted on the base (7), and is located above the threaded fastening device (3) and the bolt-on / off device (6), and can be flipped forward and backward and positioned.

2. The automatic make-up and make-out equipment for wellhead according to claim 1, characterized in that: The invention also comprises a support frame (4), wherein the support frame (4) is fixedly mounted on the base (7); the threaded fastening device (3) comprises a synchronous frame (3.1), a pair of telescopic devices (3.2) and a pair of upper and lower guiding semi-cones (3.3); the synchronous frame (3.1) is mounted on the support frame (4) and can be moved up and down and positioned; the pair of telescopic devices (3.2) are relatively fixedly mounted on the synchronous frame (3.1); the pair of upper and lower guiding semi-cones (3.3) are relatively fixedly mounted on the telescopic ends of the pair of telescopic devices (3.2); the telescopic movement of the pair of telescopic devices (3.2) can drive the pair of upper and lower guiding semi-cones (3.3) to move closer to or farther from each other.

3. The automatic make-up and make-out equipment for wellhead according to claim 2, characterized in that: The pair of upper and lower guide semi-cones (3.3) present a conical structure with a thin middle portion and thick ends, and upper fenders (3.3.1) are detachably mounted on the upper ends of the pair of upper and lower guide semi-cones (3.3), and lower fender guides (3.3.2) are fixedly mounted on the lower ends of the pair of upper and lower guide semi-cones (3.3).

4. The automatic make-up and make-out equipment for wellhead according to claim 2, characterized in that: The righting device (1) comprises a righting rod (1.1), a limiting mechanism (1.2) and a guide wheel mechanism (1.3); the righting rod (1.1) can be flipped forward and backward and is installed on the top of the support frame (4) in a positionable manner, and is located above the synchronization frame (3.1); the limiting mechanism (1.2) and the guide wheel mechanism (1.3) are respectively installed on the top of the righting rod (1.1), and the limiting mechanism (1.2) is located on the front side of the guide wheel mechanism (1.3).

5. The automatic make-up and make-out equipment for wellhead according to claim 4, characterized in that: The limiting mechanism (1.2) comprises a driving member (1.2.2) and a pair of limiting rods (1.2.1); the pair of limiting rods (1.2.1) are respectively rotatably mounted on the top of the righting rod (1.1) via a rotating shaft, and their lower ends are connected via a connecting rod assembly; the driving member (1.2.2) is fixedly mounted on the top of the righting rod (1.1), and its telescopic end is connected to the connecting rod assembly; the driving member (1.2.2) telescopes and drives the pair of limiting rods (1.2.1) to rotate through the connecting rod assembly until their upper ends are close to or away from each other.

6. The automatic make-up and make-out equipment for wellhead according to claim 4, characterized in that: The guide wheel mechanism (1.3) comprises a V-shaped wheel (1.3.2), and the V-shaped wheel (1.3.2) is rotatably mounted on the top of the straightening rod (1.1) via a horizontally arranged central axis (1.3.1); adjustable limiting mechanisms (1.3.3) for adjusting the position of the V-shaped wheel (1.3.2) are respectively mounted on the parts of the central axis (1.3.1) corresponding to the two ends of the V-shaped wheel (1.3.2).

7. The wellhead automatic make-and-breakout equipment according to any one of claims 1 to 6, characterized in that: The buckle-on / off device (6) comprises a hydraulic clamp (6.1), a clamp support plate (6.3) and a sliding plate (6.4); the sliding plate (6.4) can be horizontally moved forward and backward and is positioned on the base (7); the clamp support plate (6.3) is horizontally installed above the sliding plate (6.4) and is connected to the sliding plate (6.4) for vertical movement via a plurality of lifting guide columns (6.2); the hydraulic clamp (6.1) is fixedly installed on the clamp support plate (6.3).

8. The wellhead automatic make-up and make-out equipment according to any one of claims 1 to 6, characterized in that: The base (7) further comprises four support legs (14) with adjustable heights, wherein the four support legs (14) are arranged opposite to each other in pairs; the base (7) comprises a pedestal (7.1), wherein the pedestal (7.1) is located in an area enclosed by the four support legs (14), and the two sides of the rear end of the pedestal are respectively connected and positioned by vertical sliding sleeves (7.3) with two of the support legs (14) in an upward and downward sliding manner; horizontal sliding sleeves (7.2) are fixedly installed on both sides of the pedestal (7.1) in a relatively horizontal manner, and horizontal shafts (8.1) are respectively installed in the two horizontal sliding sleeves (7.2) in a manner that they slide and are positioned; and vertical sliding sleeves (8.2) are provided on the remaining two support legs (14) in a manner that they can slide and are positioned upward and downward, and the two vertical sliding sleeves (8.2) are respectively fixedly connected to one end of the two horizontal shafts (8.1).

9. The wellhead automatic make-up and make-out equipment according to claim 8, characterized in that: The invention also comprises a lower reinforcement frame (10), wherein the lower reinforcement frame (10) comprises a rear beam (10.2), two side telescopic beams (10.3) and four connecting blocks (10.1), wherein the four connecting blocks (10.1) are respectively arranged on the four supporting legs (14) in a positionable sliding sleeve; the rear beam (10.2) is horizontally arranged between two of the supporting legs (14), and its two ends are respectively fixedly connected to the corresponding two connecting blocks (10.1); the two side telescopic beams (10.3) are horizontally arranged opposite to each other, and are respectively located below the two transverse sliding sleeves (7.2) and are respectively parallel to the two transverse sliding sleeves (7.2), and the two ends of the two side telescopic beams (10.3) are respectively fixedly connected to the four connecting blocks (10.1).

10. The automatic make-up and make-out equipment for wellhead according to claim 8, characterized in that: It also comprises two half clamping devices (9), which are relatively mounted on the base (7.1) and can be moved horizontally and positioned close to or away from each other to clamp or loosen the wellhead flange.

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