A WORKOVER SYSTEM FOR RECEIVING A TUBULAR STRING FROM A WELLBORE

A workover system for receiving a tubular string from a wellbore pressurized by hydrogen, the system including:- at least three BOPs (5, 6, 7) defining at least a first part (P 1) and a second part (P2) of a string passage there-between, each BOP (5, 6, 7) being configured to sealingly engage an out...

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Bibliographische Detailangaben
Hauptverfasser:	VON DER HEIDE, Antonius Stefan, HEIJWEGEN, Sven
Format:	Patent
Sprache:	eng ; fre ; ger
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:	A workover system for receiving a tubular string from a wellbore pressurized by hydrogen, the system including:- at least three BOPs (5, 6, 7) defining at least a first part (P 1) and a second part (P2) of a string passage there-between, each BOP (5, 6, 7) being configured to sealingly engage an outer surface of a tubular string (T) when the BOP (5, 6, 7) is in a sealing state and to disengage the outer surface of the tubular string (T) when the BOP is in a releasing state; and-a pressure conditioning system (11, 12, 13, 14, 21, 22) configured to fill each of the first and second part (P1, P2) of the string passage with a buffer fluid, in particular during at pressurization period.Also, there is provided a method for moving a tubular string through a wellbore.