Drill collar lifting clamp capable of bearing torsion
A collar elevator and anti-twist technology, which is applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problems of high labor intensity, occupying a large area of the well site, and low tripping efficiency, so as to reduce labor intensity and Small operating space, the effect of improving work efficiency
Active Publication Date: 2012-03-07
BC P INC CHINA NAT PETROLEUM CORP +1
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AI Technical Summary
Problems solved by technology
There are following deficiencies in the operation method of lifting and lowering drill collars by using conventional elevators: 1) It takes up a lot of space at the wellhead
The power swivel cannot be used for the spinner of the drill collar. The wellhead needs to be equipped with hydraulic tongs or spinner tools for the spinner operation. In order to install and operate the wellhead tools, a large wellhead working area is required, resulting in large volume and heavy weight of the drill floor or derrick. Large, occupies a large area of the well site, which is not conducive to installation and transportation
2) The labor intensity of workers is high, and the tripping efficiency is low
The power swivel cannot be used for lifting and lowering of drill collars, and the turnbuckle function of the power swivel cannot be fully utilized
The operation of power faucets in foreign countries is mainly to use special drill collars. The drill collars have transverse grooves or processed edges and corners. The matching special tools are used for lifting and lowering drill collars. For domestic conventional drill collars, the lifting and lowering operations cannot be realized.
[0003] At home and abroad, there are no special elevators for conventional drill collar lifting operations for power swivels, and there are many deficiencies in the traditional lifting operation methods, which limit the development and application of power swivels in China
Method used
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Embodiment 1
[0016] Embodiment 1: Taking a torsion-bearing drill collar elevator as an example, the present invention will be further described in detail.
[0017] refer to figure 1 . The torsion-bearing drill collar elevator is mainly composed of an upper anti-twist device 1, an upper connection short 2, a connecting pin 3, a lower connection short 4 and a lower anti-twist device 5.
[0018] The upper anti-twist device 1 is a clamping hoop fixed on the side of double bolts, that is, the upper anti-twist device 1 is made up of two semicircular arc steel plates and bolts, the inner diameter of the semicircular arc steel plate is 162 mm, and the thickness of the steel plate is 20 mm. The inner walls of the two semicircular steel plates are axially covered with strip-shaped slips. Two ends of the semicircular arc-shaped steel plate are respectively connected with a flat steel plate, and two bolt holes are respectively arranged on the flat steel plate. The two semicircular steel plates are ...
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The invention relates to a drill collar lifting clamp capable of bearing twisting, which is used for a power faucet to raise and fall the drill collar. An upper torsion-resisting device is a clamping hoop which is used for fixing the side surface of a bolt; the upper torsion-resisting device is fixed on the outer wall of the top part of an upper short joining joint; the lower end of the upper short joining joint is provided with two lifting lugs; two vertical steel plates for the two lifting lugs are provided with pin holes; the upper end of a lower shorting joining joint is provided with a single lifting lug, and the lower end is provided with external threads for the drill collar; connecting pins penetrate through the pin holes on the two lifting lug steel plates and a pin hole on the steel plate for the single lifting lug of the lower shorting joining joint; and the outer wall of the lower end of the lower shorting joining joint is provided with a lower torsion-resisting device. The drill collar lifting clamp has the function of transferring torque to clamp the opening of the drill collar, a pair of hydraulic power chain tongs is used for fastening and tightening when the drillcollar and a connecting pipe column are shackled and unshackled, and the power faucet and the connecting pipe column can be rotationally shackled by the power faucet through the novel drill collar lifting clamp, therefore, the labor intensity of the worker can be reduced, the drill collar raising and falling efficiency can be improved and the drill collar opening tool can be simplified.
Description
technical field [0001] The invention relates to the technical field of petroleum and coalbed methane drilling, in particular to a drill collar elevator, which is a torsion-bearing drill collar elevator that can cooperate with a power faucet to realize tripping and tripping of conventional drill collars. Background technique [0002] The power faucet is inexpensive, small in size, and has some top drive features. The power swivel has the function of rotation, and the use of the power swivel for the tripping operation has great advantages compared with the ordinary rotary table and kelly drilling operation. When tripping and tripping operations using power swivels in China, there is no specific wellhead tool to cooperate, so the operation of tripping drill collars still adopts the traditional operation method, that is, conventional elevators and wellhead tools such as hydraulic tongs are used to realize the tripping operation. . Conventional elevators are buckled under the h...
Claims
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IPC IPC(8): E21B19/06
Inventor 纪友哲韩飞贾涛朱英杰马汝涛刘洋王雪耿莉
Owner BC P INC CHINA NAT PETROLEUM CORP