Invention Grant
US08490520B2 Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings 有权
用于组装和拆卸管状柱的油田管状旋转和旋转检测

Oilfield tubular spin-in and spin-out detection for making-up and breaking-out tubular strings
Abstract:
Spin-in and spin-out apparatus and methods are presented wherein an oilfield tubular spinner used in combination with a wrench detects the shouldering-up of tubulars during make-up and tubular thread disengagement during break-out. Sensors are employed to quantify measurables indicative of shouldering-up and thread disengagement, the measurables being used to shutdown spin-in and spin-out operations. Thresholds are employed to detect measurable values of interest. Timers may be employed to monitor and control the spin-in and spin-out operations.
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