FLUID FORMULATIONS FOR CLEANING OIL-BASED OR SYNTHETIC OIL-BASED MUD FILTER CAKES

摘要

A treatment composition may contact an oil-based mud (OBM) filter cake formed over at least part of a wellbore for incorporating more oil and/or filter cake particles into the treatment composition as compared to an otherwise identical filter cake absent the treatment composition. The treatment composition may include, but is not limited to, a surfactant, an aqueous-based fluid, an agent, an optional second acid, and combinations thereof. The agent may be or include long chain alcohols, phenol derivatives, fatty esters, a first acid, and combinations thereof. The first acid may be or include citric acid, oleic acid, tartaric acid, stearic acid, linoleic acid, linolenic acid, aromatic dicarboxylic acids, oxalic acid, malonic acid, succinic acid, glutaric acid, boric acid, adipic acid, a diacid, a triacid, a tetraacid, and combinations thereof.

主权项

1. A treatment composition comprising:
a surfactant selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, zwitterionic surfactants, gemini surfactants, extended chain surfactants, dendritic surfactants, dendritic extended surfactants, and combinations thereof; an aqueous-based fluid; and an agent selected from the group consisting of long chain alcohols, phenol derivatives, fatty esters, a first acid, and combinations thereof; wherein the first acid is selected from the group consisting of citric acid, oleic acid, tartaric acid, stearic acid, linoleic acid, linolenic acid, aromatic dicarboxylic acids, oxalic acid, malonic acid, succinic acid, glutaric acid, glutamic acid, boric acid and adipic acid, a diacid, a triacid, a tetraacid, and combinations thereof.