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EMULSIFIED ACID COMPRISING WASTE OIL FOR ACIDIZING GEOLOGICAL FORMATIONS

  • US 20180282614A1
  • Filed: 03/01/2018
  • Published: 10/04/2018
  • Est. Priority Date: 04/03/2017
  • Status: Active Grant
First Claim
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1. A method of acidizing a subterranean geological formation surrounding a wellbore, comprising:

  • injecting an emulsified acid into the wellbore to acidize the subterranean geological formation,wherein the emulsified acid comprises60-80% by volume of an aqueous phase comprising hydrochloric acid,20-40% by volume of an oil phase comprising a waste oil, and0.1-3.0% by volume of an emulsifier, relative to the total volume of the emulsified acid,wherein the waste oil comprises 45-75% by weight of aromatic compounds, relative to the total weight of the waste oil, wherein the aromatic compounds are at least one selected from the group consisting of a monocyclic aromatic hydrocarbon, a polycyclic aromatic hydrocarbon, and a naphthene aromatic compound.

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