Method for stimulation of liquid flow in a well

  • US 7,270,179 B2
  • Filed: 12/03/2001
  • Issued: 09/18/2007
  • Est. Priority Date: 12/08/2000
  • Status: Active Grant
First Claim
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1. 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.

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