A drilling tool anti-backup device for directional wells

An anti-support pressure and directional well technology, applied in the direction of drilling with vibration, can solve problems such as drill bit support pressure, and achieve the effect of solving the support pressure problem and improving the drilling effect.

Active Publication Date: 2017-08-08
四川伟创石油装备制造有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a drilling tool anti-back pressure device for directional wells to solve the problem of drill bit back pressure existing in the drilling tools in the prior art during the drilling of directional wells and horizontal wells

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  • A drilling tool anti-backup device for directional wells
  • A drilling tool anti-backup device for directional wells
  • A drilling tool anti-backup device for directional wells

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Embodiment Construction

[0030] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The present invention provides a drill tool support pressure preventer for directional wells, comprising: a mandrel, the mandrel being a cavity provided with a through hole; a mandrel sleeve, the mandrel sleeve being axially movable is sleeved on the outside of the mandrel; the high-pressure mud flows through the inner cavity of the mandrel sleeve and through the inner cavity of the mandrel; the inlet end of the mandrel is provided with a shut-off piston, and the The shut-off piston can transfer part of the pressure of the high-pressure mud to the mandrel, and at the same time ensure the smooth flow of the high-pressure mud; the impeller, the impeller is arranged in the mandrel, and the rotation axis of the impeller is perpendicular to the axis of the mandrel direction, the high pressure mud drives the impeller to rotate. The drill tool anti-support pressure device for directional wells of the present invention is provided with an impeller and a shut-off piston in the circulation channel of the high-pressure mud, so that the mandrel generates axial pulse vibration and reduces the friction between the drill tool and the well wall , solve the problem of supporting pressure and improve the drilling effect.

Description

technical field [0001] The invention relates to the technical field of oil drilling equipment, in particular to a drilling tool anti-backup device for directional wells. Background technique [0002] With the advancement of oil drilling and exploitation, more and more directional wells and horizontal well technologies have been applied to oil drilling projects, and cluster wells are even used in some areas. Such a well design not only saves drilling costs, but also enables the drill bit to drill to the ideal target position better and more accurately, thereby improving the efficiency and output of oil extraction. However, the well structure of the above-mentioned various drillings also brings greater difficulties to the drilling work, which requires people to use new equipment and new technology to solve the well safety problems, orientation problems, drilling tool wear problems and drill bit back pressure And other issues. [0003] Among them, the problem of bit support p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/24
Inventor 王岳胡波胡云峰
Owner 四川伟创石油装备制造有限公司
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