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Dry sand foam generator

  • US 4,780,243 A
  • Filed: 05/19/1986
  • Issued: 10/25/1988
  • Est. Priority Date: 05/19/1986
  • Status: Expired due to Fees
First Claim
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1. A method of generating a foam containing particulate material for treating a subsurface earth formation penetrated by a well bore, said method comprising:

  • (a) introducing a first stream of pressurized gas having dry particulate material entrained therein into a vessel, said particulate material flowing vertically downward into said vessel, at least in part due to the action of gravity;

    (b) introducing a second stream of liquid into said vessel;

    (c) varying said second stream into a self-impinging conical jet;

    (d) impringing said conical jet onto said first stream and thereby forming a foam containing particulate material; and

    (e) injecting such a foam into the well bore.

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