Mechanical downhole torque separation and transmission tool
A mechanical and tool technology, used in drilling equipment, directional drilling, earth-moving drilling, etc., can solve the problems of high drill string friction, low ROP, difficult limit extension ability, etc., and achieve low cost and high reliability. , low cost effect
Active Publication Date: 2018-11-23
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0005] In this case, it is necessary to design a purely mechanical tool with lower cost and higher reliability to replace the rotary steerable drilling system to realize the directional drilling of the rotary drill string, and form a low-cost and efficient drilling new technology to solve the problem of Drilling technical problems in complex structural wells such as high drill string friction, severe underpinning pressure, low ROP, and difficult limit extension capabilities
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[0022] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention will now be described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following description.
[0023] Such as figure 1 As shown, a mechanical downhole torque separation and transmission tool, the mechanical downhole torque separation and transmission tool includes an outer casing 1, an upper indexing claw cylinder 2, a telescopic rotating cylinder 4, an indexing matching claw cylinder 3, a lower Indexing claw barrel 5, rotary clutch joint 6; the end of the outer casing 1 is fixedly connected with the drill pipe.
[0024] Both the upper indexing claw tube 2 and the lower indexing claw tube 5 are connected to the outer casing 1 by means of pins, and the telescopic rotating drum 4 is sleeved inside the upper indexing claw tube 2 and the low...
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The invention discloses a mechanical downhole torque separation and transmission tool. The mechanical downhole torque separation and transmission tool comprises an outer shell, an upper dividing clawcylinder, a telescoping rotation cylinder, a dividing cooperation claw cylinder, a lower dividing claw cylinder and a rotary clutch connector. The upper dividing claw cylinder and the lower dividing claw cylinder are fixedly connected with the outer shell, the telescoping rotation cylinder is sleeved with the upper dividing claw cylinder and the lower dividing claw cylinder, and the tail end of the telescoping rotation cylinder is connected with the outer shell or the upper dividing claw cylinder through an elastic mechanism. The dividing cooperation claw cylinder is arranged in the middle ofthe outer wall of the telescoping rotation cylinder. The rotary clutch connector is connected with the outer shell through cooperation of an inverted curved stepped shaft and a ball. The mechanical downhole torque separation and transmission tool has the advantages that torque separation is conducted by using the tool, rotary directional drilling of a drill string is achieved, the tool can replacea rotary guide drilling system, and the mechanical downhole torque separation and transmission tool is lower in cost and higher in reliability; a new low-cost efficient drilling technology is formed,so that the technical drilling problems of a complex structural well are solved that the drilling string friction drag is high, the backing pressure is serious, the mechanical drilling speed is low,and the ultimate extension capacity is low.
Description
technical field [0001] The invention relates to the technical field of drilling tools for oil and gas resources, in particular to a mechanical downhole torque separation and transmission tool. Background technique [0002] With the depletion of conventional oil and natural gas resources, unconventional oil and gas resources such as tight oil and gas, shale oil and gas, coal bed methane, and offshore oil and gas have gradually attracted attention. In order to exploit such unconventional oil and gas resources economically and efficiently, the number of wells with complex structures such as directional wells, horizontal wells, and extended-reach wells is increasing. Such wells with complex structures can effectively increase the contact area with oil and gas reservoirs, increase The drainage area of oil and gas reservoirs and the improvement of oil and gas recovery can also effectively save the area of the surface well site or save the drilling platform, reduce the comprehe...
Claims
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IPC IPC(8): E21B7/04E21B17/00E21B17/02
CPCE21B7/04E21B17/00E21B17/02
Inventor 马天寿汪兴明陈平邹家焱付建红白璟
Owner SOUTHWEST PETROLEUM UNIV