METHODS AND COMPOSITIONS FOR USE IN OIL AND/OR GAS WELLS

摘要

Methods and compositions comprising an emulsion or a microemulsion for use in various aspects of the life cycle of an oil and/or gas well are provided. In some embodiments, the emulsion or the microemulsion comprises water, a solvent, and a surfactant, and optionally, one or more additives.

主权项

1. A method of treating an oil and/or gas well having a wellbore, comprising:
injecting a fluid comprising an emulsion or microemulsion into the wellbore, wherein the emulsion or microemulsion comprises: an aqueous phase; a surfactant; and a solvent, wherein the solvent comprises an amine of the formula NR1R2R3, wherein each of R1, R2, and R3 are the same or different and are alkyl, provide at least one of R1, R2, and R3 is methyl or ethyl, or optionally, wherein any two of R1, R2, and R3 are joined together to form a ring; and wherein the pH of the fluid is about neutral or greater.