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Xiao-Ming, Wu
- New Algorithm for Tool Face Angle in Measurement While Drilling System
Abstract Views :177 |
PDF Views:121
Authors
Wu Chuan
1,
Wen Guo-Jun
2,
Wu Xiao-Ming
1,
Fu Xian-Cheng
2,
Wang Wen-Qiao
2,
Han Lei
2,
Zhang Feng
1,
Xie Hui
2
Affiliations
1 School of Engineering, China University of Geosciences, Wuhan, CN
2 School of Mechanical & Electrical Information, China University of Geosciences, Wuhan, CN
1 School of Engineering, China University of Geosciences, Wuhan, CN
2 School of Mechanical & Electrical Information, China University of Geosciences, Wuhan, CN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 2 (2016), Pagination: 428-436Abstract
Coal-bed methane (CBM) Wells can be divided into vertical and horizontal well. The directional well is composed of vertical section and horizontal section. In the process of vertical section drilling, the drilling tool face angle is one of the most important parameters for the correction of borehole trajectory, however, the existing calculation method for tool face angle is too complicated and it is not the best suitable method for Measurement While Drilling (MWD) system which uses the Microprogrammed Control Unit (MCU) as the core. Based on this, it is deduced from this paper that two brand-new calculating formulas for tool face angle. According to the theoretical research and experiments, a kind of optimal combined algorithm for tool face angle is achieved. This optimal algorithm is suitable for MWD system with MCU as the core and can provide more accurate and efficient data support for real-time borehole trajectory correction.Keywords
MWD, Tool Face Angle, Taylor Expansion, Triaxial Accelerometer, Optimal Algorithm.- Study on Downhole North-Seeking and Horizontal Hole Trajectory Measurement Technology Based on Inertial Navigation
Abstract Views :162 |
PDF Views:122
Authors
Affiliations
1 School of Engineering, China University of Geosciences (Wuhan), Wuhan-430074, CN
1 School of Engineering, China University of Geosciences (Wuhan), Wuhan-430074, CN