SYSTEM AND METHOD FOR PASSING MATTER IN A FLOW PASSAGE

The present invention relates to a system (10) for passing matter in a flow passage (12) of an oil and/or gas drilling or production installation, in particular for passing trash or drill cuttings in a drilling fluid return line. The system comprises: at least two valves (14a, 14b) arranged in serie...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	ROLLAND, NILS LENNART
Format:	Patent
Sprache:	eng ; fre
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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