Full optical fiber digital inclinometer

An all-fiber and inclinometer technology, which is applied in measurement, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of limiting the uploading capability of downhole measurement signals, limited bandwidth of transmission cables, and inability to transmit formation information.
CN1932238AInactive Publication Date: 2007-03-21BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2007-03-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses an all-fibre digital clinometer. It is composed of central processor, signal processor, counter, optical cable capstan winch, tension sensor, derrick and letting-in probe. Said invention also provides their connection mode, and also provides the working principle of said all-fiber digital clinometer and its operation method.
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Description

technical field

[0001] The invention relates to an all-fiber digital inclinometer which can be used for continuous measurement of borehole trajectories of underground oil and natural gas wells. Background technique

[0002] Inclinometers are widely used measurement tools for borehole trajectory measurement in oil and gas wells and coal mines. At present, the inclinometer used at home and abroad mainly uses a fluxgate sensor or a mechanical gyroscope as an angular velocity sensor combined with an accelerometer to measure the azimuth and inclination angle of the borehole. The fluxgate inclinometer has the advantages of simple structure, low price and stable performance, but the instrument cannot realize the measurement of oil wells with magnetic interference such as cased wells; the mechanical gyro inclinometer can make up for this shortcoming, but the mechanical gyro The internal inherent rotation mechanism makes it have defects such as complex structure, easy damage, poor v...

Claims

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