DEVICE TO DRILL ADDITIONAL BORE FROM WELL

FIELD: oil and gas well drilling and exploitation, particularly to predrill and drill side bores from cased and uncased wells. ^ SUBSTANCE: device comprises diverting wedge, body, anchor made of tube corrugated in longitudinal direction from well and whipstock lowering and location unit. Anchor has...

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Main Authors ZAJNULLIN AL'BERT GABIDULLOVICH, MOSKOVKIN VLADIMIR IL'ICH, GALIKEEV IL'GIZAR ABUZAROVICH, GARIFULLIN RAMIL' AL'FREDOVICH, MALYSHEV SERGEJ GENNADIEVICH, MUKHAMETSHIN ALMAZ ADGAMOVICH, POLENOK PAVEL VLADIMIROVICH, ABDRAKHMANOV GABDRASHIT SULTANOVICH
Format Patent
LanguageEnglish
Russian
Published 27.09.2007
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
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Summary:FIELD: oil and gas well drilling and exploitation, particularly to predrill and drill side bores from cased and uncased wells. ^ SUBSTANCE: device comprises diverting wedge, body, anchor made of tube corrugated in longitudinal direction from well and whipstock lowering and location unit. Anchor has outer perimeter 3-4% greater that of well bore or casing pipe. Whipstock has pump for liquid removal from anchor interior for following whipstock and anchor lifting from well. ^ EFFECT: possibility to remove whipstock provided with anchor made of tube corrugated in longitudinal direction from well. ^ 3 dwg
Bibliography:Application Number: RU20060103321