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- W2384710839 abstract "In directional drilling, tool face angle is one of the important parameters controlling wellbore trajectory. But when drift angle is little (less than 3°), the tool face angle surveyed with a gyrocompass is inaccurate. Generally, it is replaced with spinning top rake, so there is difference between them. The research result in the paper shows that accurate tool face angle can still be obtained under this circumstance. The calculation formula of the accurate tool face angle is presented. The formula was also simplified, and the error analysis of the simplified formula was carried out. The analysis result shows that the error is allowable." @default.
- W2384710839 created "2016-06-24" @default.
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- W2384710839 date "2001-01-01" @default.
- W2384710839 modified "2023-09-23" @default.
- W2384710839 title "Discussion on Calculation of Tool Face Angle in Gyrocompass Measuring Angle" @default.
- W2384710839 hasPublicationYear "2001" @default.
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