The Research and Application of Injection Wells Acidification with Temporary Plugging Agent

For heterogeneous oilfields, the permeability of formations vary from a few milli darcies to hundreds or even thousands of milli darcies. In order to solve this problem, to improve the injection profile, for the low permeability reservoir is broken down, it is necessary to study the temporary plugging steering acidizing technique. Using laboratory experiments, the research and development of temporary plugging agent, Auxiliary reagents selection, at last, through indoor core simulation experiment to form the system of temporary plugging acidizing formula, so as to achieve temporary plugging technology, not only solve the difficulties of heterogeneous oil field, but also save the cost, improve the economic benefit.