Wells – Processes – Cyclic injection then production of a single well
Patent
1998-05-05
2000-03-21
Bagnell, David
Wells
Processes
Cyclic injection then production of a single well
166 901, 1661055, 166265, 166306, 166401, 166268, 405128, E21B 4300, E21B 4338, E21B 4340
Patent
active
060391162
ABSTRACT:
A method and apparatus for operating a well which has a wellbore which passes into both an oil and gas production zone and a gas injection zone. An oil and gas stream is produced from the production zone through the wellbore to the surface where gas is separated from the oil. After production is shut-in, gas is mixed with a carrier fluid at the surface to form a dense mixture which, in turn, is flowed down the same wellbore and through a downhole auger separator wherein a portion of the gas is separated from the mixture. The separated gas is injected into the injection zone with the remainder of the mixture being returned to the surface. At the conclusion of the injection cycle, the well is returned to production and, if desired, the process is repeated.
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Brady Jerry L.
Stevenson Mark D.
Atlantic Richfield Company
Bagnell David
Dougherty Jennifer R
Faulconer Drude
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