INCREASING HYDROCARBON RECOVERY FROM RESERVOIRS
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United States of America Patent
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Issued Date -
Feb 18, 2016
app pub date -
Mar 21, 2014
filing date -
Mar 21, 2013
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Abstract
A method, system and apparatus for producing hydrocarbons from a low permeability reservoir formation. A wellbore (3) with a plurality of fractures (7, 9) designated as one of a first (7) or a second (9) set of fractures is provided. A first fluid conduit (11) is formed by an annulus between an outer casing (10) of a tubular and an inner tubular (16) member, and is arranged to transport produced hydrocarbons. An interior of the inner tubular member forms a second fluid conduit (12) which is arranged to transport an injection fluid. A set of first openings (14) is provided in fluid connection with the first fluid conduit, each first opening being located to substantially align with one of a first set of fractures. A set of second openings (15) is provided in fluid connection with the second fluid conduit, each second opening being located to substantially align with one of a second set of fractures. A high pressure fluid is injected into the second set of fractures, which pushes hydrocarbons located in the low permeability reservoir towards the first set of fractures, thereby increasing the recovery rate of hydrocarbons in the low permeability reservoir.
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