对油田的实际资料进行计算表明，井壁坍塌压力与井斜度和井斜方位角有关。
Calculation of practical data from oil fields demonstrates that formation sloughing pressure is dependent on deviation Angle and well azimuth.
先进的近钻头传感器可实时测量地层早期参数和井眼动态变化系列参数，比如倾斜度、伽马射线方位角、转角度、粘滑、振动及其他钻井参数。
Advanced sensors measure inclination, azimuthal gamma ray, whirl, stick-slip, vibration, and other drilling parameters for early detection of formation and borehole dynamic changes.
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