Control of fine particulate flowback in subterranean wells

  • US 5,775,425 A
  • Filed: 05/19/1997
  • Issued: 07/07/1998
  • Est. Priority Date: 03/29/1995
  • Status: Expired due to Term
First Claim
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1. A method of treating a subterranean formation to control fines migration comprising the steps of:

  • introducing a particulate-containing fluid suspension into a subterranean formation subject to fines migration through a wellbore;

    admixing with at least a portion of said particulate in said fluid suspension an effective amount of a liquid or solution of a tackifying compound whereby at least a portion of said particulate is at least partially coated by said compound such that the continuous critical resuspension velocity of said at least partially coated particulate is increased by in excess of about 30 percent when tested at a level of 0.5% active material by weight over said particulate alone with water;

    depositing the tackifying compound coated particulate in the subterranean formation; and

    flowing back fluid from the formation whereby the tackifying compound coated particulate retards movement of at least a portion of any fines moving with said flowback fluid by adhering said fines to said coated particulate.

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