METHOD OF DRILLING AND COMPLETING MULTIPLE WELLBORES INSIDE A SINGLE CAISSON

METHOD OF DRILLING AND COMPLETING MULTIPLE WELLBORES INSIDE A SINGLE CAISSON

A method and apparatus for drilling and completing multiple wellbores from a single drilling rig and from within a single wellhead is provided. In one embodiment, a template is disposed at a predetermined location downhole within a casing. In one aspect, a first casing string is lowered with the tem...

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Hauptverfasser: GLASER, MARK C, ALLEN, JACK R, FERGUSON, GERALD M, ALVAREZ, RALPH A, MCADAMS, MARLON, ROGERS, DAN E
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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creator GLASER, MARK C
ALLEN, JACK R
FERGUSON, GERALD M
ALVAREZ, RALPH A
MCADAMS, MARLON
ROGERS, DAN E
description A method and apparatus for drilling and completing multiple wellbores from a single drilling rig and from within a single wellhead is provided. In one embodiment, a template is disposed at a predetermined location downhole within a casing. In one aspect, a first casing string is lowered with the template to the predetermined location and disposed within a first wellbore. A second wellbore may be drilled through a bore in the template. A second casing string may then be lowered through the bore into the second wellbore. In another embodiment, at least t wo wellbores are drilled and completed from a surface casing having a crossover portion.
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subjects 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
title METHOD OF DRILLING AND COMPLETING MULTIPLE WELLBORES INSIDE A SINGLE CAISSON
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