An anti-torque device for coiled tubing drilling
A torque device and coiled tubing technology, applied in drilling equipment, drill pipes, drill pipes, etc., can solve the problems of coiled tubing damage, screw drilling tool failure, high penetration rate, etc., and achieve the effect of reducing drilling cost and shortening drilling cycle.
Active Publication Date: 2016-08-24
BC P INC CHINA NAT PETROLEUM CORP +1
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
It overcomes the problem of coiled tubing damage and screw drilling tool failure caused by excessive formation resistance torque and accumulation of screw drilling tool counter torque in the existing coiled tubing drilling process, and can only drill with low drilling pressure and high drilling speed.
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Embodiment Construction
[0008] like figure 1 As shown, a coiled tubing drilling anti-torque device includes an upper joint 1, a connecting sleeve 4 and a lower joint 6; the inner wall of the lower end of the upper joint 1 is threaded and sealed with the torque sleeve 2, and the connecting sleeve 4 is placed at the lower end of the upper joint 1 and is set on the torque sleeve. On the outer side of sleeve 2, the inner wall step of connecting sleeve 4 is hooked on the outer step at the lower end of torque sleeve 2, torque sleeve 2 locks connecting sleeve 4 through self-locking block 3, butterfly spring 7 is placed inside self-locking block 3, and limit sleeve 5 is threaded The seal is connected to the inside of the torque sleeve 2 and blocks the butterfly spring 7, and the lower end of the connection sleeve 4 is thread-tightly connected to the lower joint 6.
[0009] During coiled tubing drilling, a connector is used to connect the coiled tubing and the upper joint 1 of the present invention, and the l...
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The invention relates to the technical field of coiled tubing drilling and completion, in particular to a coiled tubing drilling anti-torque device. The inner wall of the lower end of an upper joint of the device is hermetically connected with a torque sleeve in a threaded manner, a connecting sleeve is disposed at the lower end of the upper joint and sleeves the outer side of the torque sleeve, a step on the inner wall of the connecting sleeve is hung at the position of an outer step at the lower end of the torque sleeve, the torque sleeve locks the connecting sleeve through a self-locking block, a disc spring is disposed on the inner side of the self-locking block, a limiting sleeve is hermetically connected onto the inner side of the torque sleeve in the threaded manner and retains the disc spring, and the lower end of the connecting sleeve is hermetically connected with a lower joint in the threaded manner. The coiled tubing drilling anti-torque device has the advantages that the problems that a coiled tubing is damaged and a screw drill is faulted due to excessive large torque and screwdrill drill reactive torque accumulation caused by stratum obstruction in the coiled tubing drilling process are avoided, high-pressure and high-speed drilling can be realized during coiled tubing drilling, the coiled tubing drilling period is further shortened and the drilling cost is reduced.
Description
Technical field: [0001] The invention relates to the technical field of coiled tubing drilling and completion, in particular to an anti-torque device for coiled tubing drilling. Background technique: [0002] In the current coiled tubing drilling operation, due to the particularity that the coiled tubing cannot rotate, the WOB, torque and BHA are limited. The torque of the rotor accumulates and reacts on the stator and downhole drilling tools. Failure to release the counter torque in time will lead to problems such as coiled tubing damage, screw drilling tool failure, and difficulty in drilling pressure. It restricts the efficiency and application of coiled tubing drilling. Invention content: [0003] The technical problem to be solved by the present invention is to provide an anti-torque device for coiled tubing drilling, which can avoid damage to the coiled tubing caused by excessive formation resistance torque and accumulation of reverse torque of the screw drilling to...
Claims
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IPC IPC(8): E21B17/02
CPCE21B17/02
Inventor 孙振旭尹方雷徐肇国李健郭书红张力宁丹宇秦立新
Owner BC P INC CHINA NAT PETROLEUM CORP