Method for stimulation of liquid flow in a well
AssigneeSubsurface Technologies, Inc.
InventorNeil Mansuy
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Abstract
An improved method of controlled energy delivery utilizing solid, liquid, and gaseous carbon dioxide (CO2) into a water well and the surrounding aquifer to remove deposited material which may cause loss of capacity in wells and a variety of water quality problems. After proper study and evaluation of problems associated with a well to be treated, adequate injection of the required amount of CO2 and energy is achieved by real-time monitoring during the injection and manipulating the phase changes in the CO2 that take place in the well and the aquifer.
Claims11
A method of stimulating a flow of water into a well from water in strata surrounding the well, comprising the steps of gathering information about the history and physical characteristics of the well and surrounding aquifer;
- providing telemetry machinery to monitor internal conditions within the well;
- sealing the well in a manner such that pressurization of the well can be accomplished;
- introducing liquid and gaseous carbon dioxide (CO2) into the well at a downhole pressure such that the liquid CO2 solidifies within the well forming solid CO2;
- manipulating and regulating the phase of CO2 delivered into the sealed well according to information provided by the telemetry machinery;
- continuing introduction of the liquid and gaseous CO2 into the well until a desired level of filling of the well with solid CO2 is attained;
- allowing the sealed well containing solid CO2 to stand for a time sufficient to sublime the solid CO2 contained in the sealed well;
- releasing residual pressure in the sealed well;
- and releasing the seal from the well.
Dependencies are inferred from the claim text.