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APPARATUSES, SYSTEMS, AND METHODS FOR FORMING IN-SITU GEL PILLS TO LIFT LIQUIDS FROM HORIZONTAL WELLS

  • US 20130312977A1
  • Filed: 04/04/2013
  • Published: 11/28/2013
  • Est. Priority Date: 04/04/2012
  • Status: Active Grant
First Claim
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1. A method for cleaning horizontal section of wells comprising the steps of:

  • injecting a gelled, gelling or gellable composition into a horizontal section of a well at a location a distance δ

    from a toe end of the well, the toe section,forming a gelled pill at the location, andpushing the gelled pill and accumulated liquids through the horizontal section of the well into the heal section of the well using gas pressure on a toe end side of the gelled pill.

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