Abstract
The injection rate created by the equipment does not provide uniform heating of the acid solution with thermo-acid samples. The first portion of the solution overheats, and the subsequent ones turn out to be underheated. Therefore, the effectiveness of acid and thermo-acid treatment of highly drained wells with low reservoir pressure is rather low. To increase the efficiency, a method of acid and thermo-acid impulses was proposed, a methodology for its application was developed, and simple designs of the necessary underground and ground equipment for wells were developed (tip reactors and a universal wellhead). If in a well intended for thermoacid treatment by pulsation the filter or some part of it turned out to be blocked by a sand plug, then they were preliminarily cleaned with a bailer without opening the sump. Thermo-acidic (as well as acidic) well treatment by pulsation is carried out without the use of a pumping unit, which can significantly reduce costs. Thus, the most suitable acidic solution for thermoacid pulsation is 15% HCl inhibited by unicol.
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