CN211777303U - Sucker rod cutter - Google Patents

Abstract

A blowout preventer is connected to a wellhead cross by a bolt group, a support plate is installed on the wellhead cross by the bolt group, the lower part of a vertical pipe is fixed on the support plate, the support plate is in a horizontal state, the vertical pipe is in a vertical state, a nut is installed on the upper part of the vertical pipe, an external thread of a screw is screwed with an internal thread of the nut, a bearing seat is connected above the screw, a thrust bearing is installed on the bearing seat, an operating platform is sleeved on a sucker rod and placed on the thrust bearing, a rotating rod downwards passes through the operating platform and is connected with the bearing seat, a left scissor is connected to a piston of a left hydraulic press, a left hydraulic press is installed in a left box, a right scissor is connected to a piston of a right hydraulic press, the right hydraulic press is installed in a right box, the left box and the right box are installed on the operating platform, the left box is positioned on the left side of, the hydraulic pressure is used for shearing the sucker rod, so that the labor intensity of operators is low, the speed is high, and the working efficiency is high.

Description

Sucker rod cutter

Technical Field

The utility model discloses a workover equipment that oil field oil pumping well was used is the ware is cut off to the sucker rod.

Background

The oil well pump in the pumping well realizes oil pumping by the reciprocating motion of the piston in the sucker rod driven pump, and the sucker rod is connected with the piston of the oil well pump into a whole. When the pump is checked, the sucker rod and the piston at the lower part are firstly lifted out, and then the pump barrel is lifted out by the oil lifting pipe. After the pumping well stops, the sand in the oil pipe on the pump can sink to block the piston of the oil well pump, so that the pumping rod cannot be lifted out, and the next operation and construction cannot be carried out. When the situation occurs on site, only the construction sequence is disturbed, the oil pipe is lifted firstly, when the first oil pipe is lifted to the well head, the ground rotates the oil pipe, so that the connecting thread between the oil pipe lifted to the ground and a coupling below the oil pipe is removed, because the oil pipe is internally provided with the sucker rod, the height of the operation derrick is limited, the lifting height of the oil pipe is limited, the lower end of the oil pipe cannot be lifted to the upper end of the sucker rod, the oil pipe is placed upside down on the well site, only the oil pipe separated from the coupling is lifted to a certain height, the sucker rod in the oil pipe is exposed, and then the sucker rod is cut off by a saw bow, so that the oil pipe and the sucker rod in the well can be lifted. At present, the oil well pump is generally below 1000m, and the number of oil pipes in each oil well is 100, so that the workload of manually sawing off the sucker rod by using a saw bow is very large, the labor intensity of workers is high, the construction time is long, the operation progress is slow, and the working efficiency is low.

Disclosure of Invention

The utility model aims at designing the sucker rod cutter, overcoming the problem that the aforesaid exists, adopting the mechanization to cut off the sucker rod, overcoming the problem that the aforesaid exists, alleviateing workman's intensity of labour, improving work efficiency.

The purpose of the utility model is realized like this: the blowout preventer comprises a sucker rod, a blowout preventer, a bolt group and a wellhead four-way, wherein the blowout preventer is connected to the wellhead four-way through the bolt group, the blowout preventer further comprises a left scissor, a left box, a left hydraulic press, a right scissor, a right hydraulic press, a right box, a rotating rod, a thrust bearing, a bearing seat, a screw rod, a nut, a vertical pipe, a supporting plate and an operating platform, the supporting plate is installed on the wellhead four-way through the bolt group, the lower part of the vertical pipe is fixed on the supporting plate, the supporting plate is in a horizontal state, the vertical pipe is in a vertical state, the nut is installed on the upper part of the vertical pipe, the external thread of the screw rod is screwed with the internal thread of the nut, the bearing seat is connected above the screw rod, the thrust bearing is installed on the bearing seat, the operating platform is sleeved on the sucker rod and placed on the thrust bearing, the rotating rod downwards penetrates through, the right hydraulic press is arranged in the right box, the left box and the right box are arranged on the operating platform, the left box is positioned on the left side of the sucker rod, the right box is positioned on the right side of the sucker rod, and the left scissors and the right scissors are aligned to the sucker rod.

The utility model has the advantages that: the hydraulic source on the on-site operation machine provides hydraulic pressure for the left hydraulic press and the right hydraulic press, so that the hydraulic pressure is converted into the shearing force of the left scissors and the right scissors on the sucker rod, the sucker rod can be mechanically cut, the defects of manual sawing of the sucker rod at present are overcome, the labor intensity of sawing of the sucker rod is low, the speed is high, and the working efficiency is high.

Drawings

Fig. 1 is an assembly view of an embodiment of the present invention.

Detailed Description

An embodiment of the present invention will be described below with reference to fig. 1.

As shown in the figure 1, the embodiment of the utility model comprises a sucker rod 1, left scissors 2, left box 3, left hydraulic press 4, right scissors 5, right hydraulic press 6, right box 7, rotating rod 8, thrust bearing 9, bearing seat 10, screw rod 11, nut 12, riser 13, blowout preventer 14, supporting plate 15, bolt group 16, well head cross 17, operation panel 18, blowout preventer 14 is connected on well head cross 17 by bolt group 16, supporting plate 15 is installed on well head cross 17 by bolt group 16, the lower part of riser 13 is fixed on supporting plate 15, supporting plate 15 is in the horizontal state, riser 13 is in the vertical state, nut 12 is installed on the upper portion of riser 13, the external screw thread of screw rod 11 is screwed with the internal screw thread of nut 12, connect bearing seat 10 on screw rod 11, thrust bearing 9 is installed on bearing seat 10, operation panel 18 is placed on thrust bearing 9 in sucker rod 1, rotating rod 8 passes operation panel 18 downwards, The thrust bearing 9 is connected with the bearing seat 10, the left scissors 2 are connected on the piston of the left hydraulic press 4, the left hydraulic press 4 is installed in the left box 3, the right scissors 5 are connected on the piston of the right hydraulic press 6, the right hydraulic press 6 is installed in the right box 7, the left box 3 and the right box 7 are installed on the operation table 18, the left box 3 is positioned on the left side of the sucker rod 1, the right box 7 is positioned on the right side of the sucker rod 1, and the left scissors 2 and the right scissors 5 are aligned with the sucker rod 1.

A hydraulic source on the working machine provides hydraulic pressure for the left hydraulic device 4 and the right hydraulic device 6, so that the hydraulic pressure is converted into shearing force of the left scissors 2 and the right scissors 5 on the sucker rod, an inlet pipe of the hydraulic source is divided into two branches which are respectively connected with the high-pressure ends of the left hydraulic device 4 and the right hydraulic device 6, and a return pipe of the inlet pipe of the hydraulic source is divided into two branches which are respectively connected with the low-pressure ends of the left hydraulic device 4 and the right hydraulic device 6. The workover rig has ready-made hydraulic pressure source (be used for dismantling the oil pipe screw thread), consequently, the utility model discloses need not increase the hydraulic pressure source, implement easily. The operation table 18 can rotate and ascend and descend, and has good practicability.

Claims (1)

1. Sucker rod cutter, including sucker rod (1), preventer (14), bolt group (16), well head cross (17), preventer (14) are connected on well head cross (17) by bolt group (16), characterized by: the device also comprises left scissors (2), a left box (3), a left hydraulic press (4), right scissors (5), a right hydraulic press (6), a right box (7), a rotating rod (8), a thrust bearing (9), a bearing seat (10), a screw (11), a nut (12), a vertical pipe (13), a support plate (15) and an operating platform (18), wherein the support plate (15) is arranged on a wellhead four-way (17) through a bolt group (16), the lower part of the vertical pipe (13) is fixed on the support plate (15), the support plate (15) is in a horizontal state, the vertical pipe (13) is in a vertical state, the nut (12) is arranged on the upper part of the vertical pipe (13), the external thread of the screw (11) is screwed with the internal thread of the nut (12), the upper bearing seat connecting shaft (10) of the screw (11), the thrust bearing (9) is arranged on the bearing seat (10), the operating platform (18) sleeves the sucker rod (1) and, a rotating rod (8) downwards penetrates through an operating platform (18) and a thrust bearing (9) to be connected with a bearing seat (10), a left scissor (2) is connected to a piston of a left hydraulic press (4), the left hydraulic press (4) is installed in a left box (3), a right scissor (5) is connected to a piston of a right hydraulic press (6), the right hydraulic press (6) is installed in a right box (7), the left box (3) and the right box (7) are installed on the operating platform (18), the left box (3) is located on the left side of a sucker rod (1), the right box (7) is located on the right side of the sucker rod (1), and the left scissor (2) and the right scissor (5) are aligned with the sucker rod (1).

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