JUSTIFICATION OF TECHNOLOGY OF STIMULATION OF GAS PRODUCTION FROM PRODUCTIVE FORMATIONS WITH VARIOUS TYPES OF RESERVOIRS IN THE CONDITIONS OF THE OFFSHORE FIELDS

• Main Authors: Vladimir I. Smurygin, Ruslan U. Rabaev, Sergey A. Blinov, Timur B. Bakishev, Shamil Kh. Sultanov
• Format: Article
• Language: Russian
• Published: Tomsk Polytechnic University 2019-02-01
• Series: Известия Томского политехнического университета: Инжиниринг георесурсов
• Subjects: gas field of the offshore shelf; effective methods of well development; technology of gas production intensification; salt acid impact on the layer; restoration of formation permeability; treatment of bottomhole formation zone
• Online Access: http://izvestiya.tpu.ru/archive/article/view/95/44
• ISSN: 2500-1019; 2413-1830

The relevance of the research is in the fact that at present the problem of maintaining hydrocarbon production levels is characterized, in particular, by the insufficient effectiveness of existing methods of stimulating and restoring the permeability of the productive formation due to small coverage of the productive formation with reagents, both in thickness and depth of penetration, and also low efficiency of development. In these conditions, the effective methods of well development are of great importance, as well as the methods of production intensification that allow the reservoir filtration characteristics to be resuscitated and improved in the bottomhole formation zone. This is especially true for the Black Sea shelf deposits, where a number of operational objects are represented by reservoirs-terrigenous and carbonate reservoirs that are being developed simultaneously, there are sections of wells with high heterogeneity of geological parameters. The main aim of the research is to propose and justify the technology of intensification of gas production for wells, developing gas-saturated reservoirs with different types of reservoir, and also to justify the use of the proposed composition for well treatment and well treatment technology. Object: well no. 1 of gas condensate field of the Black Sea shelf. Methods. To substantiate qualitatively the impact technology on the bottomhole formation zone, the authors have carried out the geological and commercial analysis of development and performed the laboratory studies on selection of optimal acid composition on core material. Results. The authors substantiated the technology of intensification of gas production for wells developing gas saturated reservoirs with different types of reservoir in conditions of offshore fields; proved the efficiency of using acidic composition based on 24 % hydrochloric acid and proposed and the technology of well treatment including sequential injection of acid solution and deflector.