A full-rotation hydraulic internal push-type high-build slope rotary guide tool

A technology of rotary steering and deflection rate, which is applied in directional drilling, drilling equipment and methods, machines/engines, etc., and can solve the problems of high metal material strength requirements of upper drilling tools, alternating fatigue damage of upper drilling tools, and heavier upper drill string Bending stress and other problems, to achieve the effect of simplifying the power supply system, reducing the stress and improving the working life
CN109025820BActive Publication Date: 2019-08-06INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
Publication Date
2019-08-06

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Abstract

The invention mainly belongs to the technical field of rotary guide systems, and particularly relates to a full-rotation hydraulic inward-pushing-type high-build-up-rate rotation guide tool. The full-rotation hydraulic inward-pushing-type high-build-up-rate rotation guide tool adopts a hydraulic system driven by a turbine and a generator set to convert the energy of the pressure mud into the hydraulic energy. By adopting the hydraulic system driven by the turbine and the generator set, the power is provided for a piston through the hydraulic mode, so that the lateral force obtained by a drillbit is larger. Meanwhile, the hinged mode is adopted, so that the optimal steering capability is achieved. As a result, the high build-up rate is easier to achieve. The hydraulic piston pushes againstthe inner wall of a lower rotating sleeve instead of the wall of a well, so that the abrasion can be reduced. At the same time, only one set of pushing piston assemblies is pushed out at the same moment, so that the unnecessary work is reduced. The service life of the piston is prolonged.
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Description

technical field

[0001] The invention mainly belongs to the technical field of rotary steerable systems, and in particular relates to a full-rotation hydraulic internal push type high-inclination-rate rotary steerable tool. Background technique

[0002] Rotary steerable technology belongs to the field of directional drilling, and is mainly used for three-position trajectory well drilling such as directional wells, horizontal wells, and extended-reach wells. Relying on its own high-precision servo control mechanism and high-precision attitude measurement sensor, it can accurately control the drilling direction of the drill bit in real time, thereby realizing the control of the wellbore trajectory.

[0003] In the prior art, take Baker Hughes' AutoTrak Curve rotary steerable tool and Schlumberger's PD Archer rotary steerable tool as examples. The AutoTrak Curve rotary steerable tool uses three sets of hydraulic pushing cylinders and their attached ribs to push against the well...

Claims

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