Centering device for wellhead of workover rig
Technical Field
The utility model relates to the technical field of workover rig auxiliary equipment, in particular to a centering device for a wellhead of a workover rig.
Background
In the running process of the large-repair drilling well on the market, the pipe column is difficult to finish the butt joint with the pipe column at the lower stage in the descending process, and the pipe column is usually required to be manually pushed to carry out the butt joint, so that one or two personnel are required to be arranged on the working platform to operate, the labor cost is high, and meanwhile, certain safety risks exist for operators in the centering process, so that the centering device of the wellhead of the well repairing machine is provided.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides the centering device for the wellhead of the workover rig, which is used for stably supporting a tubular column and aligning the tubular column with the wellhead through the matched use of the arranged support, the cross beam, the rectangular cylinder, the rotary support assembly and the centering auxiliary assembly, thereby reducing the risk of manual pipe supporting work, reducing the labor intensity of operators, reducing the labor waste, overcoming the defects of the prior art, effectively solving the problems that one or two manpower is needed for operation when the existing drilling tubular column is in butt joint, having high labor cost and having a certain safety risk for the operators in the centering process.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the centering device for the wellhead of the workover rig comprises a support, wherein two cross beams are symmetrically fixed between the two supports, a rectangular cylinder is movably installed between the two cross beams, a rotary supporting component is installed on the rectangular cylinder, and a centering auxiliary component is installed on the rotary supporting component;
The centering auxiliary assembly comprises a first half cone and a second half cone, and the outer wall of the first half cone is connected with a first hydraulic push rod through a steering angle piece.
Through foretell scheme, through the cooperation of support, crossbeam, rectangular cylinder, rotatory supporting component and the centering auxiliary assembly that sets up use, the support that stablizes is carried out to the tubular column and is aimed at with the well head, convenient and fast has reduced the danger of artifical pipe work of holding up, has reduced operating personnel's intensity of labour, has reduced the manpower extravagant.
Preferably, the rotary support assembly comprises an L-shaped support plate fixed on one side of the top end of the rectangular cylinder, one end of the horizontal section of the L-shaped support plate is rotationally connected with a rectangular frame through a steering angle piece, the other side of the top end of the rectangular cylinder is provided with a second hydraulic push rod through the steering angle piece, one side of the lower end face of the rectangular frame is provided with a support rod, and one end of the second hydraulic push rod is connected with the bottom end of the support rod through the steering angle piece.
Preferably, a fixed block is arranged above the second hydraulic push rod on one side of the upper end face of the rectangular frame, one end of the first hydraulic push rod is fixedly connected to one side of the fixed block, and the second half cone is fixed to the other side of the upper end face of the rectangular frame through a steering angle piece.
Preferably, the first half cone and the second half cone are the same in size.
Preferably, the outer walls of the two opposite sides of the rectangular cylinder are provided with sliding grooves, and the two cross beams are respectively and slidably clamped with the two sliding grooves.
Preferably, the top of one of the supports is in threaded connection with an adjusting bolt, and one end of the adjusting bolt is in rotary connection with one side of the rectangular cylinder through a bearing.
The beneficial effects of the utility model are as follows:
1. The pipe column of the workover rig is arranged between the first half cone and the second half cone, the rectangular frame can be driven to rotate by utilizing the expansion and contraction of the second hydraulic push rod according to the inclination degree of the pipe column to adjust the angle of the rectangular frame, the plane where the rectangular frame is located is vertical to the pipe column, the first half cone is pushed to move towards the direction of the second half cone by utilizing the first hydraulic push rod, the first half cone and the second half cone are combined into a complete cone, the pipe column is sleeved, the pipe column is supported to have a supporting effect, and the stability of the pipe column during pipe descending is ensured.
2. The rectangular cylinder is driven to move by rotating the adjusting bolt, so that the tubular column is driven to move, the position of the tubular column is adjusted and the tubular column is aligned with a wellhead, stable pipe discharging can be performed, convenience and rapidness are realized, and the risk of manually supporting the pipe is reduced.
The manual pushing and supporting pipe column performs butt joint, the pipe column is mechanically dropped to complete butt joint, the manpower waste is reduced, the installation is convenient, the labor intensity of operators is reduced, and meanwhile, the working danger of workers is reduced
In summary, through the cooperation of support, crossbeam, rectangular section of thick bamboo, rotation support subassembly and the centering auxiliary assembly that sets up use, the tubular column is stabilized and is aimed at with the well head, convenient and fast has reduced the danger of artifical pipe work of holding up, has reduced operating personnel's intensity of labour, has reduced the manpower extravagant.
Drawings
Fig. 1 is a schematic perspective view of a first view of a centering device for a wellhead of a workover rig according to the present utility model.
Fig. 2 is a schematic view of a second perspective three-dimensional structure of a centering device for a wellhead of a workover rig according to the present utility model.
Fig. 3 is a schematic structural view of a rectangular cylinder of a centering device for a wellhead of a workover rig according to the present utility model.
In the figure, the hydraulic steering device comprises a support, a rectangular cylinder, a fixed block, a first hydraulic push rod, a first half cone, a second half cone, a rectangular frame, a transverse beam, a regulating bolt, a second hydraulic push rod, a supporting rod, a steering angle piece, a sliding chute and a steering angle piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
1, Referring to fig. 1-3, a centering device for a wellhead of a workover rig comprises a support 1, two cross beams 9 are symmetrically fixed between the two supports 1, a rectangular cylinder 2 is movably installed between the two cross beams 9, a rotary support assembly is installed on the rectangular cylinder 2, a centering auxiliary assembly is installed on the rotary support assembly, the centering auxiliary assembly comprises a first half cone 5 and a second half cone 6, and the outer wall of the first half cone 5 is connected with a first hydraulic push rod 4 through a steering angle piece 13;
The rotary support assembly comprises an L-shaped support plate 8 fixed at one side of the top end of the rectangular cylinder 2, one end of the horizontal section of the L-shaped support plate 8 is rotationally connected with a rectangular frame 7 through a steering angle piece, a second hydraulic push rod 11 is installed at the other side of the top end of the rectangular cylinder 2 through a steering angle piece 13, a support rod 12 is installed at one side of the lower end face of the rectangular frame 7, one end of the second hydraulic push rod 11 is connected with the bottom end of the support rod 12 through the steering angle piece 13, and the rectangular frame 7 can be driven to rotate by utilizing the expansion and contraction of the second hydraulic push rod 11 to realize the adjustment of the angle of the rectangular frame 7;
A fixed block 3 is arranged above the second hydraulic push rod 11 on one side of the upper end surface of the rectangular frame 7, one end of the first hydraulic push rod 4 is fixedly connected to one side of the fixed block 3, the second half cone 6 is fixed on the other side of the upper end surface of the rectangular frame 7 through a steering angle piece 13, and the sizes of the first half cone 5 and the second half cone 6 are the same;
The pipe column of the workover rig is arranged between a first half cone 5 and a second half cone 6, the first half cone 5 is pushed by a first hydraulic push rod 4 to move towards the second half cone 6, so that the first half cone 5 and the second half cone 6 are combined into a complete cone, the pipe column is sleeved, and the pipe column is supported;
The outer walls of the two opposite sides of the rectangular cylinder 2 are provided with sliding grooves 14, the two cross beams 9 are respectively in sliding clamping connection with the two sliding grooves 14, the top of one support 1 is in threaded connection with an adjusting bolt 10, and one end of the adjusting bolt 10 is in rotary connection with one side of the rectangular cylinder 2 through a bearing;
The rectangular cylinder 2 is driven to move by rotating the adjusting bolt 10, so that the pipe column is driven to move, and the position of the pipe column can be adjusted and the well head can be aligned.
The working principle is that a pipe column of the workover rig is arranged between a first half cone 5 and a second half cone 6, the rectangular frame 7 can be driven to rotate by utilizing the expansion and contraction of a second hydraulic push rod 11 according to the inclination degree of the pipe column to realize the adjustment of the angle of the rectangular frame 7, the plane of the rectangular frame 7 is vertical to the pipe column, the first half cone 5 is pushed by the first hydraulic push rod 4 to move towards the second half cone 6, the first half cone 5 and the second half cone 6 are combined into a complete cone, the pipe column is sleeved, the pipe column is supported, the stability of the pipe column is ensured when the pipe is lowered, the rectangular cylinder 2 is driven to move by rotating an adjusting bolt 10, the pipe column is driven to move, the position of the pipe column is adjusted, and the well head is aligned, so that stable pipe lowering can be performed, convenience and rapidness are realized, and the risk of manual pipe supporting work is reduced.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.