Control system for three-axis optical fiber gyro inclinometer
A technology of fiber optic gyroscope and control system, which is applied in the direction of measurement, wellbore/well components, earthwork drilling and production, etc. It can solve the problems that affect the measurement accuracy, parameters cannot be transmitted in time, delay, etc.
Active Publication Date: 2019-05-31
BEIJING HUARUI JIUIZHOU ENERGY TECH
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Problems solved by technology
[0004] To this end, the embodiment of the present invention provides a control system for a three-axis fiber optic gyro inclinometer to solve the problem of the transmission signal caused by the difference between the uphole and downhole environments in the ground platform calculation method of the existing oil well fiber optic gyro inclinometer. Deformation, delay, some parameters cannot be transmitted in time, affecting the measurement accuracy
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Embodiment 1
[0040] The fiber optic gyro inclinometer is an inertial measurement system based on inertial navigation technology. It uses the angular motion and linear motion parameters of the relative inertial space measured by sensitive devices such as fiber optic gyroscopes and accelerometers. Well inclination angle, well inclination azimuth angle, tool face angle and other information. Specifically, the basic working principle of the inertial navigation system is based on Newton's laws of mechanics. By measuring the acceleration of the carrier in the inertial reference system, integrating it with respect to time, and then transforming it into the navigation coordinate system, the position in the navigation coordinate system is obtained. Velocity, yaw angle and position information, etc., the acceleration and angular acceleration relative to the inertial space measured by the inertial element directly installed on the carrier are components along the carrier axis, and these components can...
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The embodiment of the invention discloses a control system for a three-axis optical fiber gyro inclinometer. The control system comprises an inertial measurement unit, a temperature measurement unit,an integrated micro-control circuit, an AD analog-to-digital conversion circuit, a DSP solution circuit and a power supply circuit, wherein an optical fiber gyro signal collected by the inertial measurement unit is processed by the integrated micro-control circuit, an acceleration meter signal measured by an accelerometer is processed by the AD analog-to-digital conversion circuit, finally the processed optical fiber gyro signal and acceleration meter signal are directly transmitted to a high-efficiency digital DSP processor of the DSP solution circuit for real-time solution. The control system for the three-axis optical fiber gyro inclinometer has the advantages that the solution is efficient and fast, uploading to a ground solution platform is not needed, the data solution speed and accuracy are greatly improved, the temperature adaptability is better, the overall size is small, the design is integrated, and the control system is suitable for narrow space in a well.
Description
technical field [0001] Embodiments of the present invention relate to the technical field of oil exploitation, and in particular to a control system for a three-axis fiber optic gyro inclinometer. Background technique [0002] With the continuous improvement of oilfield development, easy-to-exploit oil resources are increasingly exhausted, and the environment and well conditions in oil areas are becoming more and more complex. In order to ensure the quality of oil exploration and production, more accurate and efficient oil well borehole trajectory measurement is required. At present, the inclinometers widely used in China mainly use fluxgate technology and mechanical gyro technology, but they all have their own defects and shortcomings, resulting in various drawbacks and restrictions. The fiber optic gyro inclinometer is based on the fiber optic gyroscope (FOG) A new generation of inclinometers with inertial navigation measurement technology and optical fiber communication t...
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IPC IPC(8): E21B47/022E21B47/024E21B47/07E21B47/12
Inventor 张国芳高宇泽杨斌魏建宝李卫强赵勇张海华鲍杰霍华伟
Owner BEIJING HUARUI JIUIZHOU ENERGY TECH