A wellhead automatic make-up and break-out device

Abstract

The present invention relates to an automatic make-up and make-up equipment for a wellhead, comprising a base, a straightening device, a threaded fastening device and a make-up and make-up device, wherein the threaded fastening device is installed on the base; the make-up and make-up device can be moved forward and backward 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 forward and backward and positioned. The beneficial effects of the present invention are compact structure and reasonable design, and it is mainly used in the threaded make-up and make-up process of the wellhead joint at the oil drilling and repair site, which improves the degree of unmanned and automated operation of the wellhead, solves the problem of low success rate of automatic fastening in the current automated and unmanned make-up and make-up process, and heavy reliance on manual assistance, and improves the efficiency of unmanned and automated operation of wellhead pipes and rods; and helps to promote the automation and intelligence level of drilling and repair operations.

Description

Technical Field

[0001] The present invention relates to the fields of petroleum automation equipment and intelligent technology, and in particular to a wellhead automatic make-and-breakout device. Background Art

[0002] With the advancement of modern technology and industry, oil well drilling and workover equipment is moving towards digitalization, automation, and intelligence. However, during the tripping and unloading of tubing strings during drilling and workover, unmanned automation of the pipe-making and breakout process has consistently hindered the development of fully automated and intelligent drilling and workover technologies. Currently, this process relies primarily on manual operation. The position of the pipe rod during transportation and lifting is uncertain. The lifting point at the top of the pipe rod is a flexible constraint, and the support point at the bottom is not a completely fixed constraint. As a result, the position of the threaded end at the bottom of the pipe rod fluctuates within a certain range due to field disturbances. Furthermore, the position of the exposed threaded end at the bottom of the pipe rod also fluctuates within a certain range due to other factors during the operation. This poses significant challenges to mechanized make-up and breakout operations, especially those involving unmanned automation. The threaded joint connection and make-up and breakout operations are frequently repetitive, placing a high level of labor intensity on operators. Therefore, the development of an automated wellhead make-up and breakout device is needed to address this current challenge. Summary of the Invention

[0003] The invention provides a wellhead automatic make-up and break-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 device 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 forward and backward 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 forward and backward and positioned.

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

[0007] The present invention has a compact structure and a reasonable design. It is mainly used in the threaded make-up and break-out operation process of wellhead joints at the oil drilling and workover site, improving the degree of unmanned and automated operation of the wellhead, solving the problem of low automatic fastening success rate and heavy reliance on manual assistance in the current automated and unmanned make-up and break-out process, improving the efficiency of unmanned and automated operation of wellhead pipes and rods, and helping to promote the improvement of the automation and intelligence level of drilling and workover operations.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

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

[0010] The beneficial effect of adopting the above further scheme is that during 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 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 have a conical structure with a thin middle part and thick ends, and the upper ends of the pair of upper and lower guide semi-cones are respectively detachably installed with upper mudguards, and the lower ends of the pair of upper and lower guide semi-cones are respectively fixedly installed with lower mudguard guides.

[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, which cover the upper and lower ends of the pipe joint when lifting the pipe column 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 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 solution 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 to 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 installed on the top of the straightening rod through a rotating shaft, and their lower ends 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-mentioned further scheme is that during the operation, the driving part 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 part, 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 installed on the top of the straightening rod through a horizontally arranged central axis; adjustable limiting mechanisms for adjusting the position of the V-shaped wheel are respectively installed 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 the use of 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-making and breaking device includes a hydraulic tong, a tong support plate and a sliding plate. The sliding plate can move horizontally back and forth and is positioned on the base; the tong support plate is horizontally installed above the sliding plate, and is connected to the sliding plate for up and down movement through multiple lifting guide columns; the hydraulic tong is fixedly installed on the tong support plate.

[0020] The beneficial effect of adopting the above further solution is that during the operation, the sliding plate can drive the hydraulic tongs and the tong support plate to move back and forth 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 base, and the base is located in the area enclosed by the four support legs, and the two sides of its rear end are respectively connected and positioned by vertical sliding sleeves 1 with two of the support legs for sliding up and down; horizontal sliding sleeves are fixedly installed on both sides of the base relatively horizontally, and horizontal shafts are installed in the two horizontal sliding sleeves for sliding and positioning respectively; the sleeves that can slide up and down and be positioned on the remaining two support legs are provided with vertical sliding sleeves 2, and the two vertical sliding sleeves 2 are respectively fixedly connected to one end of the two horizontal shafts.

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

[0023] In addition, the front and rear position of the hydraulic tongs can be adjusted by using two transverse shafts and two transverse sliding 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 positioned in sliding sleeves 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 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 solution 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 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 moved horizontally and positioned closer to or farther away from each other to clamp or loosen the wellhead flange.

[0027] The beneficial effect of adopting the above further solution is that during assembly, the wellhead flange is clamped by two half clamping devices 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 Schematic diagram of the structure of the righting device in the present invention;

[0030] Figure 3 Schematic diagram of the structure of the thread fastening device in the present invention;

[0031] Figure 4 Schematic diagram of the structure of the make-up and break-out device in the present invention;

[0032] Figure 5 Schematic diagram of the structure 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 as follows:

[0035] 1. Righting device; 1.1. Righting rod; 1.1.1. Connecting head; 1.1.2. Bottom hinge hole; 1.2. Limiting mechanism; 1.2.1. Limiting rod; 1.2.2. Driving part; 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 guide semi-cones; 3.3.1. Upper mudguard; 3.3.2. Lower mudguard guide; 4. Support frame; 4.1. Ear seat; 4.2. Rotating connector; 4.3. Connecting seat 1; 5. Guide rail pair 1; 6. Loading and unloading device; 6.1. Hydraulic tongs; 6.2. Lifting Guide column; 6.3, tongs support plate; 6.4, sliding plate; 6.5, telescopic connecting ear; 6.6, pipe rod groove; 7, base; 7.1, base; 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, buckle-on and buckle-off 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 orientations or positional relationships based on the orientations 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", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. 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 expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on 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 for a wellhead, including 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 breaking 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 break-out operations of wellhead joints at oil drilling and workover sites, improving the degree of unmanned and automated operations at the wellhead, solving the problem of low automatic make-up and break-out success rate and heavy reliance on manual assistance in the current automated and unmanned processes, improving the efficiency of unmanned and automated operations of wellhead pipes and rods, and helping to promote the improvement of the automation and intelligence level of drilling and workover operations.

[0044] Example 2

[0045] Based on 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 synchronization frame 3.1, a pair of telescopic devices 3.2 and a pair of upper and lower guide semi-cones 3.3, and the synchronization 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 synchronization frame 3.1, and the pair of upper and lower guide 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 guide semi-cones 3.3 to move closer to or away from each other.

[0046] During operation, the telescopic devices 3.2 are extended and retracted to allow the paired upper and lower guide semi-cones 3.3 to merge into a complete upper and lower conical flares for guiding the upper and lower threaded joints to be fastened together, thereby facilitating operation and increasing efficiency.

[0047] Preferably, in this embodiment, the support frame 4 is in a U-shaped frame structure as a whole, with its open 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] Furthermore, a connecting base 1 4.3 is fixedly connected to the support frame 4, and a connecting base 2 3.1.2 is fixedly connected to the synchronous frame 3.1. A threaded interlocking device lifting control device 11 is vertically disposed between the connecting base 1 4.3 and the connecting base 2 3.1.2. The ends of the threaded interlocking device lifting control device 11 (preferably a hydraulic cylinder in the prior art) are respectively fixedly connected to the connecting base 1 4.3 and the connecting base 2 3.1.2. During operation, the threaded interlocking device lifting control device 11 drives 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 mounted on the synchronization frame 3.1, and their telescopic ends are relatively telescopic and fixedly connected to the two upper and lower guide semi-cones 3.3 respectively.

[0051] Example 3

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

[0053] This solution 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, which 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 semicircular plate-shaped structures, and semicircular holes for the pipe rod to pass through are provided at the centers of 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 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 using the straightening rod 1.1, and at the same time, a limiting space is formed by using the limiting mechanism 1.2 and the guide wheel mechanism 1.3 to limit the pipe rod within a certain range.

[0060] Preferably, in this embodiment, the above-mentioned straightening rod 1.1 is a U-shaped structure as a whole, 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 above-mentioned 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 end of the straightening 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 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 part 1.2.2 uses 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 position of the driving part 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] Furthermore, the connecting rod assembly comprises five connecting rods, which are pivotally connected end to end. The telescopic end of the driving member 1.2.2 is pivotally connected to the center of the connecting rod located in the middle, and the ends of the two connecting rods located at the ends, which are spaced apart from each other, are pivotally connected to the corresponding ends of the two limit rods 1.2.1. During use, the driving member 1.2.2 is extended and retracted, and the connecting rods drive 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; the central axis 1.3.1 is respectively provided with adjustable limiting mechanisms 1.3.3 for adjusting the position thereof.

[0070] This solution has a simple structure and 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 shaft 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 fixedly mounted horizontally on the closed end of the straightening rod 1.1, and 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] Furthermore, the two adjustable limiting mechanisms 1.3.3 are preferably provided with limiting nuts, each threaded onto a threaded section at each end of the central shaft 1.3.1. During operation, 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, and the sliding plate 6.4 can be moved horizontally 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 tong support plate 6.3 to move forward and backward on the base 7. At the same time, the hydraulic tongs 6.1 can be moved up and down by using multiple lifting guide columns 6.2 to facilitate the pipe rod beading operation.

[0077] Preferably, in this embodiment, the tongs supporting plate 6.3 and the sliding plate 6.4 are preferably rectangular plate structures.

[0078] Preferably, in this embodiment, four lifting guide posts 6.2 are provided. Each of the four lifting guide posts 6.2 comprises a hydraulic cylinder and a sleeve with an open lower end and a closed upper end. The four sleeves are vertically fixedly mounted at the four corners of the tong support plate 6.3, with their lower ends fixedly connected to the tong support plate 6.3 via flanges. Four hydraulic cylinders are vertically fixedly mounted at the four corners of the sliding plate 6.4, with their telescopic ends extending vertically upward through the tong support plate 6.3 and into the four sleeves. The telescopic ends of the four hydraulic cylinders are fixedly connected to the top walls of the four sleeves. During use, the four hydraulic cylinders are used to extend and retract to drive the tong support plate 6.3 and the hydraulic tong 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 hydraulic tongs 6.1 are based on existing technology, and their specific structure and principle will not be described in detail here.

[0081] Example 8

[0082] On the basis of the above embodiments, this embodiment also includes four support legs 14 with adjustable heights, and the four support legs 14 are distributed 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 its rear end are respectively connected and positioned by vertical sliding sleeves 1 7.3 with two of the support legs 14 for sliding up and down; 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] This solution has a simple structure and a reasonable design. The height of the entire device can be adjusted using the four support legs 14 to meet different operations.

[0084] In addition, the two transverse shafts 8.1 and the two transverse sliding 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 shaft 8.1 and the corresponding second vertical sliding sleeve 8.2 form a transverse support 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-back direction respectively. A guide rail pair 2 13 is fixedly installed thereon respectively, and a slider is 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 hook-and-break mechanism telescopic control device 12 (using a conventional hydraulic cylinder) is also fixedly mounted on the base 7.1. A telescopic connecting lug 6.5 is fixedly connected to the sliding plate 6.4. The telescopic end of the hook-and-break mechanism telescopic control device 12 telescopes forward and backward and is fixedly connected to the telescopic connecting lug 6.5. During use, the hook-and-break mechanism telescopic control device 12 telescopes and retracts, driving the sliding plate 6.4 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 as follows: a plurality of through-holes are evenly spaced from top to bottom on each of the four support legs 14, and each vertical sliding sleeve 1 7.3 and each vertical sliding sleeve 2 8.2 is provided with a pair of through-holes. During use, the base 7.1 is moved until the corresponding positioning holes on the four support 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, respectively. 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 secure 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 axial direction, and the two transverse shafts 8.1 are provided with positioning holes extending therethrough. During use, the two transverse shafts 8.1 are manually moved until the positioning holes on them connect with the corresponding pairs of through holes on the two transverse sleeves 7.2. The two latches are then 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 7.3 and the two vertical sliding sleeves 8.2 are respectively mounted on the four support rods 14.1; the pad 14 is horizontally arranged below the support rod 14.1, and the ball shaft 14.2 is arranged between the pad 14.3 and the support rod 14.1, with its upper end threadedly connected to the support rod 14.1 and its lower end movably connected to the pad 14.3. During 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] Based on Example 8, this embodiment also includes a lower reinforcement frame 10, which includes a rear beam 10.2, two side telescopic beams 10.3 and four connecting blocks 10.1. The four connecting blocks 10.1 are respectively positionably slidably sleeved on the four support legs 14; the rear beam 10.2 is horizontally arranged between two of the support 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 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 reinforcement frame 10 can increase the strength of the four support legs 14. At the same time, the expansion and contraction of the two side telescopic beams 10.3 can adapt to the sliding connection between the two transverse shafts 8.1 and the two transverse sliding sleeves 7.2, making adjustment easy.

[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 an outer sleeve and a telescopic rod, the two telescopic rods are horizontally distributed relative to each other, and one end thereof is fixedly connected to the corresponding two connecting blocks 10.1; the two outer sleeves are respectively slidably mounted on the two telescopic rods, and one end thereof is fixedly connected to the remaining two connecting blocks 10.1.

[0097] In addition, the two telescopic rods are each provided with a through-hole, and the two outer sleeves are each provided with multiple pairs of through-holes evenly spaced along their length. To use, the two outer sleeves are manually slid until the corresponding pair of through-holes connects to the two positioning holes, and the two latches are inserted into the two positioning holes and the two pairs of through-holes, respectively.

[0098] Example 10

[0099] On the basis of any one of the 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 to 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 each comprise a V-shaped block 9.1, a connecting screw 9.2, and a housing 9.4. The two housings 9.4 are fixedly mounted relative to each other on the front side of the base 7.1. The two connecting screws 9.2 extend through the two housings 9.4 and are 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 facing away from each other are rotatably connected to the opposite ends of the two connecting screws 9.2. During 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 provided with through-strip openings, each having scale lines along its length. Position indicator blocks 9.3 are slidably mounted on the two strip openings. One end of the two position indicator blocks 9.3 extends into the two shells 9.4 and is respectively mounted on the two connecting screws 9.2. The two position indicator blocks 9.3 can 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 lowering 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 guide 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 guide semi-cones 3.3, the upper and lower breakout devices 6 are 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 bottom of the pipe rod does not leave the ground. The straightening device 1 is driven forward by the push-support drive device 2 until it is within the limit space 1.4. Mechanism 1.2 begins to close to position I, the elevator continues to lift the pipe to a certain height, the push-support drive device 2 drives the straightening device 1 to retract to the center of the pipe to the center of the wellhead, and the limit mechanism 1.2 continues to close to position II; the 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 conical cavity, and the threaded fastening device lifting control device 11 drives the threaded fastening 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, and the bottom joint of the pipe 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 by the telescopic device 3.2, and the thread buckling device 3 is raised by the thread buckling device lifting control device 11, and then the upper and lower buckling device 6 is extended forward by the telescopic control device 12 until the jaws of the hydraulic tongs 6.1 and the center of the pipe groove 6.6 reach the center of the wellhead, and at the same time, the hydraulic pressure is lifted 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. After the hydraulic tongs 6.1 complete the make-up and break-out, the notch alignment is completed. 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 opens. The straightening device 1 is retracted under the drive of the push-support drive device 2. The pipe string operation process for one pipe rod is completed. This process is continuously repeated. The entire pipe string operation 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] 2. The upper and lower guide semi-cones 3.3 are retracted and opened, the upper mudguard 3.3.1 and the lower mudguard guide 3.3.2 are installed on the upper and lower guide semi-cones 3.3, the make-up and break-out device 6 is retracted to the rear of the base 7, the straightening device 1 is retracted, the limit mechanism 1.2 is opened, the pipe is lifted by the elevator until the pipe joint reaches the specified height of the wellhead, the wellhead slips are closed, and the pipe is seated on the wellhead. The make-up and break-out device 6 is extended forward by the make-up and break-out device telescopic control device 12 until the jaws of the hydraulic tongs 6.1 and the center of the pipe 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 complete the make-up and break-out operation under the control of the electro-hydraulic control system. After the hydraulic tongs 6.1 complete the make-up and break-out, the notch is aligned. The telescopic control device 12 of the make-up and breakout device drives the lower part to retract, and the lifting control device 11 of the threaded fastening device drives the threaded fastening 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, surrounding the threaded joint that has been disconnected. The elevator is lifted so that the pipe joint cannot be separated from the upper and lower guiding semi-cones 3.3 to form the inner cavity until there is no dirt splashing. The straightening device 1 is driven forward by the pushing and supporting drive device 2 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 fastening device 3 rises, the straightening device 1 continues to push the pipe to the front end, the elevator lowers the pipe until it lands, and the pushing and supporting drive device 2 drives the straightening device 1 to retract, thus completing the pipe string lifting operation process of one pipe. This process is continuously repeated. The entire pipe lifting process is completed by the 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 limit mechanism with adaptive ability during the fastening process. During the pushing process, the limit mechanism makes the pipe rod limit space adapt to the pipe rod posture and adjusts its limit space size under the closed-loop control of the driving device, so that the limited pipe rod has a certain range of movement, and cooperates with the upper conical funnel of the threaded fastening device in the limit 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 thread 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 concentric with the upper conical funnel is formed to capture the lower joint of the pipe rod. The upper and lower conical funnels of the threaded fastening device are composed of a pair of upper and lower guiding semi-cones 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 center of the device and align them. The retractable horizontal 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 adaptable 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 are improved.

[0110] The purpose of the present invention is to develop an unmanned automatic make-up and break-out device and method for use in the process of drilling and repairing well operations based on the on-site operation characteristics of oil drilling and repairing equipment and the related technical difficulties encountered. During the make-up process, the device first pushes and limits the pipe rod through a limit mechanism with adaptive capabilities. During the pushing process, the limit mechanism adjusts the size of the limit space of the pipe rod to adapt to the posture of the pipe rod under the closed-loop control of the driving device. The make-up can be completed in the limit space by cooperating with the upper conical funnel of the threaded make-up and break-out device, and the thread make-up is completed by the fully automatic make-up and break-out device; the threaded make-up device can not only form an upper conical funnel 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 horizontal 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 adaptable 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 are improved.

[0111] The present invention is mainly used in the threaded make-up and break-out operation process of wellhead joints at the oil drilling and workover site, thereby improving the degree of unmanned and automated operation of the wellhead, solving the problem of low automatic make-up and break-out success rate and heavy reliance on manual assistance in the current automated and unmanned process, and improving the efficiency of unmanned and automated operation of wellhead pipes and rods; and helping to promote the improvement of the automation and intelligence level of drilling and workover operations.

[0112] It should be noted that all electronic components involved in the present invention adopt existing technologies, and the above components are electrically connected to the controller, and the control circuits between the controller and the components are existing technologies.

[0113] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0114] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wellhead automatic make-up and break-out device, characterized by: The invention comprises a base (7), a straightening device (1), a threaded fastening device (3) and a buckling device (6), wherein the threaded fastening device (3) is mounted on the base (7); the buckling 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 buckling device (6), and can be flipped forward and backward and positioned; It also includes a support frame (4), which is fixedly mounted on the base (7); the straightening device (1) includes a straightening rod (1.1), which can be flipped forward and backward and positioned on the top of the support frame (4), and is located above the threaded fastening device (3); The utility model also comprises four support legs (14) with adjustable heights, and the four support legs (14) are arranged in pairs relative to each other; the base (7) comprises a base (7.1), the base (7.1) is located in an 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 (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 base (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; vertical sliding sleeves (8.2) are respectively fixedly connected to one end of the two horizontal shafts (8.1) on the remaining two support legs (14) in a manner that they slide and are positioned.

2. The automatic make-up and break-out equipment for the wellhead according to claim 1, characterized in that: 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 break-out equipment for the wellhead according to claim 2, characterized in that: The pair of upper and lower guide semi-cones (3.3) are in 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 break-out equipment for the wellhead according to claim 2, characterized in that: The righting device (1) further comprises a limiting mechanism (1.2) and a guide wheel mechanism (1.3); the limiting mechanism (1.2) and the guide wheel mechanism (1.3) are respectively mounted on the top of the righting rod (1.1), and the limiting mechanism (1.2) is located in front of the guide wheel mechanism (1.3).

5. The automatic make-up and break-out equipment for the 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 approach or move away from each other.

6. The automatic make-up and break-out equipment for the wellhead according to claim 4, characterized in that: The guide wheel mechanism (1.3) includes a V-shaped wheel (1.3.2), which 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 positions of the central axis (1.3.1) corresponding to the two ends of the V-shaped wheel (1.3.2).

7. The automatic make-up and break-out equipment for a wellhead according to any one of claims 1 to 6, characterized in that: The buckle-making and breaking device (6) comprises a hydraulic tongs (6.1), a tongs supporting plate (6.3) and a sliding plate (6.4); the sliding plate (6.4) can be moved horizontally forward and backward and is positioned on the base (7); the tongs supporting 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 tongs (6.1) is fixedly installed on the tongs supporting plate (6.3).

8. The automatic make-up and break-out equipment for a wellhead according to any one of claims 1 to 6, 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).

9. The wellhead automatic make-and-breakout equipment according to any one of claims 1 to 6, characterized in that: It also includes two half-clamping devices (9), which are relatively mounted on the base (7.1) and can be moved horizontally and positioned closer to or farther from each other to clamp or loosen the wellhead flange.

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