Strapdown inertial combine measurement controller adapted to whole-optical fiber digital slope level

Strapdown inertial combine measurement controller adapted to whole-optical fiber digital slope level

The present invention discloses a strapdown inertial combination measurement control device applicable to all-fibre digital clinometer, it is used for measuring well course of oil well and gas well, in particular it is applicable to conventional measurement with line and measurement while drilling....

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1. Verfasser: CHUNXI,GAO ZHANG
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Sprache:eng
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EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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description The present invention discloses a strapdown inertial combination measurement control device applicable to all-fibre digital clinometer, it is used for measuring well course of oil well and gas well, in particular it is applicable to conventional measurement with line and measurement while drilling. Said control device adopts strapdown inertial navigation principle, and utilizes main navigation system formed from optical-fibre gyroscope and anti-vibration accelerometer, under the condition of different working environments and measurement accuracy requirements respectively utilizes several external information of logging cable rope length, flux-gate sensor and zero speed and combines kalman filter so as to make system error estimation and correction of main inertial navigation system, and can limit error diffusion of inertial navigation system and form a high-accuracy combination inertial measurement instrument.
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subjects EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
title Strapdown inertial combine measurement controller adapted to whole-optical fiber digital slope level
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