PORT SUB WITH DELAYED OPENING SEQUENCE

A port sub comprises one or more standard flow ports, each having a low-pressure port assembly positioned therein to, and at least one control flow port having a high-pressure port assembly positioned therein. The low-pressure port assembly cornprises an inner layer having a first rupture pressure a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	NAJAFOV, JEYHUN, WATKINS, TOM
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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