Method of planning and/or performing an offshore well operation

Discloses a method for predicting the effect of heave on offshore well operations performed from a floating offshore structure comprising providing heave motion data 30 for said structure to a processing module 12, running a well operation simulation model 20 on said processing module using heave mo...

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Bibliographische Detailangaben
Hauptverfasser:	Dmitri Gorski, Ole Morten Aamo, Martin Kvernland, Sigbjorn Sangesland
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	Discloses a method for predicting the effect of heave on offshore well operations performed from a floating offshore structure comprising providing heave motion data 30 for said structure to a processing module 12, running a well operation simulation model 20 on said processing module using heave motion data, calculating a wellbore pressure 24 using said model and comparing 26 said pressure to a pressure margin for the well to determine a risk associated with the operation. The calculated wellbore pressure may be compared with at least one pressure margin for the subsea well to determine a risk associated with the well operation. Updated or real-time wave or weather data may be used to calculate the effects of heave motion on wellbore pressure.