... Abstract Estimating hydraulic frictional loss in narrow annuli is challenging, especially for deepwater offshore wells with extremely narrow drilling margins. The challenge arises from annuli that are formed by big bore packers like Gravel Pack Packers, where the annular clearance isextremely...

... to kick tolerance, a few misconceptions were identified. Among those misconceptions are issues related to the calculation of the kick volume on bottom when a BHA is present, the effects of friction losses on the wellbore annulus and choke line, and confusion between kick tolerance and maximum allowable...

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... Abstract Deepwater well control with a subsea BOP is often difficult and in many circumstances impossible with the usual methods and procedures. This is mainly due to the difficulty to maintain the circulating pressure below the low formation fracture pressure, because of high friction losses...

... Abstract Deepwater well control with a subsea BOP is often difficult and in many circumstances impossible with the usual methods and procedures. This is not only due to the narrow margin between pore and formation fracture pressures, but also to friction losses in kill and choke lines...

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