PROCESS FOR TREATMENT OF WATER INJECTION WELLS

摘要

Water injection wells are stimulated by an oil-external micellar slug preceded and/or followed by at least one micellar (buffer) slug of a higher water content. This series of slugs is forced out into the formation by means of a water drive. There may be continuous grading from water to oil-external slug to drive water. The buffer slugs may be continuously graded in water content rather than by injecting distinctly different slug compositions.