Wells – Processes – With indicating – testing – measuring or locating
Patent
1998-09-16
2000-11-07
Bagnell, David
Wells
Processes
With indicating, testing, measuring or locating
166 53, 166369, E21B 4700, E21B 4300
Patent
active
061422290
ABSTRACT:
A method and system for producing hydrocarbons from a low permeability formation through a well wherein the formation is first fractured with steam. The pressure of the produced fluids is measured at timed intervals and signals representative of these measurements are inputted into a computer which, in turn, calculates the rate of change in the pressure and compares this rate to a preferred limit of rate change. When the limit is exceeded, the computer outputs a signal to adjust a control value in the production line to keep the rate of pressure decrease within the preferred limit. When production drops below a certain level, the control valve is fully opened to "bump" the well and allow the pressure to increase to a new maximum. This new maximum pressure is then used to set a new preferred limit of pressure rate change.
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Branson, Jr. Aubrey G.
Kelly Michael Patrick
Swain Robert S.
Atlantic Richfield Company
Bagnell David
Dougherty Jennifer R.
Gabala James A.
Sloat Robert E.
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