THERMAL HYDROCARBON RECOVERY METHOD USING SHOCK CYCLING FLUID STIMULATION
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United States of America Patent
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Jun 30, 2016
app pub date -
Dec 30, 2015
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Dec 30, 2015
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Abstract
A thermal hydrocarbon recovery method comprising cycling high pressure fluid injection for a period of time followed by low pressure fluid injection for a period of time, the high pressure injection primarily to dilate and enhance reservoir porosity/permeability and improve the subsequent low pressure fluid injectivity. The method is particularly useful for recovering heavy and extra heavy hydrocarbons from tight formations and/or low vertical permeability reservoirs under viscosity reduction and gravity drainage methods. This method is believed to be applicable for recovering heavy or extra heavy oil from reservoirs with geological risk associated with cap rock integrity.
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