Push-against type rotation guiding tool

Abstract

The invention relates to a push-against type rotation guiding tool, and belongs to the technical field of oil downhole guiding tools. The push-against type rotation guiding tool is composed of an shell, an upper joint, a lower joint and a rotation control device, one end of the shell is provided with the upper joint in a threaded mode, the other end of the shell is provided with the lower joint ina threaded mode, a center pipe is movably mounted in the position, between the upper joint and the lower joint, of the shell, and the rotation control device is mounted between the center pipe and the shell. The push-against type rotation guiding tool is of a purely mechanical structure, compared with control through an electronic control component, the push-against type rotation guiding tool hashigher high temperature, high pressure and high corrosion resistant ability, and therefore, the overall reliability of the push-against type rotation guiding tool is high; and the reference directionof rotation guiding is determined through an eccentric pipe, extending of a thrust rod in all directions is controlled through the rotation control device, the precession direction of a drill bit iscontrolled, compared with electrical control over the precession direction of the drill bit, the technical difficulty in signal does not exist, and the problem that through electrical control over theprecession direction of the drill bit, reliability is poor, and the overall reliability is poor is effectively solved.

Description

technical field [0001] The invention relates to a pushing-type rotary steering tool, which belongs to the technical field of petroleum downhole steering tools. Background technique [0002] In oil drilling engineering, for some oil fields restricted by geographical location or in the late stage of development, it is usually necessary to develop ultra-deep wells, difficult directional wells, extended-reach wells and long-distance horizontal wells to obtain oil and gas deep in the formation. To reach a specific position, it is necessary to guide the screwing direction of the drill bit. Rotary steerable drilling technology is a cutting-edge automatic drilling technology that emerged in the 1990s. Its appearance is a qualitative leap in the world's drilling technology. The core of the rotary steerable drilling technology is the rotary steerable drilling system. It is mainly composed of downhole rotary automatic steering drilling system, surface monitoring system and two-way c...

AI Technical Summary

Problems solved by technology

However, with the gradual increase in the number and proportion of deep wells, ultra-deep wells, special process wells, and high-temperature and high-pressure wells, people continue to face more new technical difficulties, such as signal transmission technology difficulties, signal detection technology difficulties, etc., so through The reliability of electric control to control the screwing direction of the drill bit is relatively poor. At the same time, due to the harsh environment such as high corrosion, high temperature and high pressure deep in the formation, it has a great impact on electronic equipment. The working life of the electronic control components is short, and the electronic control components may Damaged at any time, the overall reliability of the system is poor

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