Device and method for reducing resistance and increasing speed through shaft torsional combined action in drilling process
A drilling and functional technology, which is applied in the field of devices to improve drilling efficiency, can solve the problems of low friction requirements and difficult to meet, and achieve the effects of reducing frictional resistance, saving drilling costs and improving drilling efficiency
Active Publication Date: 2019-11-19
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
However, none of the above-mentioned devices can meet the current requirements of high-quality, fast and low-friction drilling in extended-reach wells and horizontal wells.
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[0017] Such as Figure 1-Figure 4 As shown, a device and method for reducing drag and increasing speed through the combined action of shaft torsion in the drilling process, its structure mainly includes: upper shell body 1, inlet screw 2, nut 3, spring upper support 4, No. 1 spring 5, valve assembly Threaded shaft 6, No. 2 spring 7, lower spring support 8, main gasket 9, valve port 10, middle and outer casing 11, impact nut 12, piston 13, sealing ring 14, No. 3 spring upper support 15, No. 3 spring 16. No. 3 spring lower support 17, lower outer casing 18, impact assembly shaft 19, gasket 20, rolling bearing 21, rotating housing 22, rotating assembly shaft 23, eccentric member 24, nozzle 25, outer joint 26; its technical characteristics That is: the upper outer casing 1, the middle outer casing 11, and the lower outer casing 18 are connected by threads from top to bottom; the inner surface of the upper end of the upper outer casing 1 cooperates with the inlet screw 2, and the i...
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The invention relates to a device and method for improving drilling efficiency in oil field exploration and development process, and provides a device and method can be used for a horizontal well, a directional well and a large-displacement well for reducing frictional force of a drill column and the well wall. According to the technical scheme, a device for reducing resistance and increasing speed through shaft torsional combined action mainly comprises an upper outer shell, a spring, a valve assembly threaded shaft, a middle outer shell, a valve port, a piston, a lower outer shell, an impactassembly shaft, a rotary assembly shaft, a rotary shell, an eccentric member and an outer joint; the upper outer shell, the middle outer shell and the lower outer shell are sequentially connected from top to bottom through threads; the lower outer shell is in spline connection with the impact assembly shaft; the impact assembly shaft, the rotary shell and the outer joint are sequentially connected through threads; the valve port is connected with the lower part of the upper shell; the piston is connected with the upper end of the impact assembly shaft; the eccentric member is connected with the lower end of the impact assembly shaft; the spring is arranged between the upper outer shell and the lower outer shell; and valve assembly threaded shaft is installed in the shell. The device for reducing resistance and increasing speed through shaft torsional combined action is simple in structure, high in efficiency and low in cost.
Description
technical field [0001] The invention relates to a device and method for improving drilling efficiency in the process of oil field exploration and development, which belongs to a supporting device for oil and natural gas drilling, and is a lowering drill string and well wall for horizontal wells, directional wells, and extended-reach wells. Apparatus and method for frictional resistance. Background technique [0002] At present, with the continuous development of oilfield exploration and development, the proportion of horizontal wells, directional wells and extended wells is increasing. Longer horizontal section drilling technology has been widely used at home and abroad, mainly due to its better input-output ratio. During the drilling process of extended-reach wells and horizontal wells, excessive frictional resistance leads to long drilling time, low drilling efficiency, and high drilling costs. These factors have become the most important factors for the development of ho...
Claims
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Login to View More IPC IPC(8): E21B7/24
CPCE21B7/24
Inventor 石昌帅谭凌祝效华
Owner SOUTHWEST PETROLEUM UNIV