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Well drilling orientating sensor

A technology of directional sensor and positioning sensor, which is applied in earthwork drilling, wellbore/well components, measurement, etc. It can solve the problems of poor precision and discrete guiding results, and reduce difficulty, eliminate electromagnetic interference, and eliminate disturbance of directional accuracy Effect

Inactive Publication Date: 2017-07-28
青岛智腾科技有限公司
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AI Technical Summary

Problems solved by technology

Since the orientation sensor is sensitive to vibration interference and electromagnetic interference, it is very difficult or even impossible to obtain a signal from an orientation sensor installed on the rotating shaft while the shaft is rotating, so it can only be used when the rotating shaft is stationary or moving slowly The signal of the directional sensor and the directional indication of the outer sleeve relative to the drilling can be obtained only when it is necessary to obtain a discrete steering result, or a continuous steering result with extremely poor accuracy

Method used

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Embodiment Construction

[0022] Below, the present invention will be described in detail by means of specific embodiments. Those skilled in the art will understand that this description is illustrative rather than limiting, and the protection scope of the present invention is not limited to specific embodiments.

[0023] Commonly used oil drilling while drilling tools include MWD (wireless measurement while drilling), LWD (wireless logging while drilling), RSS (rotary steerable drilling system), etc. In the measurement while drilling tools, there are usually arranged for measuring Measuring subs for orientation parameters, vibration parameters, resistivity and gamma (the measurement while drilling tool is composed of multiple measurement subs connected in series), in which the magnetic azimuth is one of the important parameters of the wellbore measured by the measurement while drilling tool . Usually, the orientation sensor assembly is installed in the measurement-while-drilling tool, and the core com...

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Abstract

A well drilling orientating sensor can achieve the high anti-interference capacity, the high precision and high guiding operation efficiency and is installed in a measurement and control system connected with a drilling-following measurement tool through an inserted shaft. The well drilling orientating sensor comprises an orientating sensor body, a magnetic orientation angular compensator and an inductive coil.

Description

technical field [0001] The invention relates to an orientation sensor for a downhole steering tool for directional drilling, in particular to an orientation sensor for a full-rotation pointing steering tool, which is suitable for being combined into a downhole drilling device. Background technique [0002] In the prior art, in oil and gas drilling projects, the proportion of directional wells, horizontal wells, and extended-reach wells is getting higher and higher, and the application range of measurement-while-drilling tools is getting wider and wider. At present, the most commonly used oil drilling The drilling tool is MWD (Wireless Measuring While Drilling). As a rotary steering tool, the drill pipe can realize the steering control of the wellbore trajectory in the rotating state. Generally, the rotary steering tool is divided into the drill bit pushing type and the bit pointing type according to the guiding method, and can be divided into " Drive shaft - non-rotating sl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/0228E21B47/0224E21B47/13E21B47/14
CPCE21B47/0224E21B47/0228E21B47/13E21B47/14
Inventor 刘军王晓伟徐江燕程金晶
Owner 青岛智腾科技有限公司
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