Cemented open hole selective fracing system

  • US 7,267,172 B2
  • Filed: 03/15/2005
  • Issued: 09/11/2007
  • Est. Priority Date: 03/15/2005
  • Status: Expired due to Fees
First Claim
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1. A method of petroleum production from at least one open hole in at least one petroleum production zone of an oil and/or gas well comprising the following steps:

  • locating a plurality of sliding valves spaced apart along a production tubing at predetermined locations;

    inserting said plurality of said sliding valves and said production tubing into said at lease least one open hole;

    cementing said plurality of said sliding valves and said production tubing permanently in place in said at least one open hole with cement, said predetermined locations along said production tubing corresponding to predetermined locations in said at lease least one open hole;

    selectively opening said plurality of sliding valves without jetting or cutting tools and selectively dissolving said cement adjacent to said plurality of sliding valves to establish contact with said at least one petroleum production zone;

    selectively fracing through said plurality of sliding valves with fracing material; and

    selectively producing said at least one petroleum production zone through said at lease least one open hole of said oil and/or gas well that has been (a) selectively opened (b) selectively dissolved, and (c) selectively fraced.

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