Abstract
This study investigates stuck pipe mechanisms that pertain to rock cuttings under various operations. First, a transient two-layer model considering cuttings sliding down is established. The static friction of the cutting bed is derived dynamically to determine the slip point. Next, a simple method is proposed based on the wetted perimeter to obtain the pipe's different shear stresses during tripping in and out. Finally, various operations, such as pipe connections and tripping with or without circulation, are simulated flexibly by combining the pump on or off and pipe moving in or out based on an extended reach well.
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