Approaches to solving the efficiency enhancement problems while remedial cementing
The article presents a methodological approach, aimed at enhancement of remedial cementing efficiency, the main idea of which is the arrangement of actions when planning geological-technical measures (GTM). The basic principles of wells-candidates' selection to carry out such actions as well as technologies most suitable for these geological-technical conditions, are discussed. The technologies, capable of ensuring oil formations protection when carrying out remedial cementing, are presented and illustrated. The method of efficiency prediction calculation of the planned GTM is given. The algorithm of construction of remedial cementing design, placed in the "Remedial cementing design in oil wells" program module is set forth in the article. The mathematical description of selection of some optimal grouting composition and its volume using fuzzy logic methods is suggested. The results of the design construction and the choice of the optimal variant (grouting composition and its volume) are presented on the example of a typical well. The advantages of this approach application both for service and oil producing companies are discussed.