DOWNHOLE CIRCULATING VALVE HAVING A METAL-TO-METAL SEAL AND METHOD FOR OPERATING SAME

A downhole circulating valve (104) includes a generally tubular outer housing (130) having an axially extending internal passageway (136) including an internal seat (140) and at least one generally radially extending opening (142) formed through the housing intersecting the internal seat. A valve el...

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Bibliographische Detailangaben

Hauptverfasser:	REESING, DAVID, L, COLLINS, LEO, G, BAYH III, RUSSELL, IRVING, WILLIAMSON, JIMMIE, ROBERT
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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