Systems And Methods For Multistage Fracturing

A downhole system for multistage fracturing having at least a first cluster of valves. The first cluster of valves has a frac valve. The first cluster of valves also has a flex valve. A single plugging device is operable to pass through all of the valves of the first cluster of valves and leave all...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Payne, Derek Slater
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:	A downhole system for multistage fracturing having at least a first cluster of valves. The first cluster of valves has a frac valve. The first cluster of valves also has a flex valve. A single plugging device is operable to pass through all of the valves of the first cluster of valves and leave all of them closed.