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A wellhead system for petroleum producing wells comprises a "stack-down" casing hanger configuration. In this stack-down system, the hanger for each successively smaller diameter casing string is landed or "nested" within the hanger for the next larger casing string. This approac...

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Bibliographische Detailangaben

Hauptverfasser:	ROBERT B. BATEN, MARCUS A. SMEDLEY, DAVID MACFARLANE, HAROLD B. SKEELS, RUSSELL E. MCBETH, RANDY J. WESTER
Format:	Patent
Sprache:	por
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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