Methods and compositions related to gelled layers in oil and/or gas wells
AssigneeFlotek Chemistry, LLC
InventorsAngus Fursdon-Welsh, James Silas, Monica Smith-Gonzalez
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Abstract
Methods and compositions for the prevention of the formation, breakdown, and/or removal of gelled layers in an oil and/or gas well are provided. In some embodiments, the compositions and methods comprise a concentrate, as described in more detail herein, where the concentrate comprises two or more surfactants. In certain embodiments, the compositions and methods comprise an emulsion or a microemulsion. The emulsion or microemulsion may include a surfactant, optionally a solvent, and optionally a freezing point depression agent or other components.
Claims13
A method for breaking down and/or removing a gelled layer in an oil and/or gas well having a wellbore, comprising:
- injecting a concentrate comprising surfactant, wherein the surfactant comprises and alkoxylated polimine;
- forming the gelled layer in the presence of an acid and an acid corrosion inhibitor, wherein the acid corrosion inhibitor comprises propargyl alcohol;
- and
- breaking down and/or removing the gelled layer.
Dependencies are inferred from the claim text.