Wells – Processes – Distinct – separate injection and producing wells
Patent
1985-03-26
1987-02-03
Suchfield, George A.
Wells
Processes
Distinct, separate injection and producing wells
166 57, 166223, 166250, 166268, 166272, 166302, 166303, 1663051, 166312, 166313, E21B 3600, E21B 4312, E21B 4318, E21B 4324
Patent
active
046403558
ABSTRACT:
The present invention is a method and apparatus for injecting compressible fluids into multiple zones of a hydrocarbon bearing formation, in particular injecting compressible fluid at a predetermined, constant rate into multiple zones through a single tubing string. Producing zones are packed off and limited entry outlets are installed on the injection tubing string at each producing zone. Injection pressure is maintained and limited entry outlets are designed and sized such that the compressible fluid reaches sonic flow through the outlets so that the flow rate no longer responds to changes in downstream pressures.
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Ault Joseph W.
Griston Suzanne
Hong Ki C.
Chevron Research Company
Keeling Edward J.
Rafter, Jr. J. A.
Suchfield George A.
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