Methods for dewatering shaly subterranean formations
AssigneeSchlumberger Technology Corporation
InventorsMatthew J. Miller, Curtis L. Boney, Kevin W. England, Jerald J. Hinkel
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Abstract
Methods are provided for increasing the production of hydrocarbons from shaly formations that contain adsorbed condensed hydrocarbon gases by treating such formations with dewatering compositions comprising surfactants that cause the surfaces of the formation to be or to remain oil-wet. The methods may be used in stimulation (acidizing or acid fracturing or hydraulic fracturing), remediation or workover, and in enhancing flow from natural fractures or from unstimulated formations.
Claims16
A method for enhancing gas production from a shaly hydrocarbon bearing subterranean formation comprising adsorbed a compressed gas comprising the steps of
- i) contacting the formation with an effective amount of a well treatment fluid comprising one or more than one of a dewatering agent that is adsorbed and causes the formation to be or to remain oil-wet;
- ii) removing water from the formation;
- and
- iii) removing gas from the formation.
Dependencies are inferred from the claim text.