The article is devoted to the selection and application of flow redirecting technologies at the development sites of the Vankorskoye field by RN-Vankor LLC.
The first part of the article discusses the possibility of planning and applying enhanced oil recovery methods, and also analyzes the criteria for the applicability of these EOR in the conditions of the Vankorskoye field. The issues of the choice of flow redirecting technologies and their improvement are considered, taking into account a number of features, such as large compartmentalization, high permeability and permeability heterogeneity of reservoirs, as well as the development of a network of horizontal and directional wells. Shown are the results of laboratory development and pilot testing of technology based on three-dimensionally crosslinked partially hydrolyzed acrylamide polymers. Watering routes for production wells have been established. Based on the results of laboratory tests, the processing design was selected, which includes recipes for the preparation of rims and the processing sequence. Taking into account the experience of the live application of gel polymer compositions in the Vankorskoye field, the well treatment design has been improved. The technique of selection of candidate wells by the method of parametric ranking of waterflooding elements is described. The data on technological efficiency from the impact on injection wells, as well as data on the number of treatments and coverage of the fund in the implementation of the program for the use of flow diverting technologies are presented. The periods of the first tests in 2016, replication in 2017 at the Yak-3-7 deposit of the Vankorskoye field are considered.
References
1. Ismagilov T.A., Ganiev I.M., Sorokin A.V. et al., Effective use of gel-polymer compositions in horizontal wells of the Vankorskoye field (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2017, no. 12, pp. 117–121, DOI:10.24887/0028-2448-2017-12-117-121
2. Zakharyan A.G., Musin R.M., Cimic M. et al., Systematic approach to the application of chemical EOR in JSC “Rosneft”, SPE-176727-RU, 2015, DOI:10.2118/176727-MS
3. Ismagilov T.A., Application of water control technologies, considering the mechanisms of injected water breakthrough (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2015, no. 11, pp. 56–59.
4. Zakharov V.P., Ismagilov T.A., Telin A.G., Silin M.A., Neftepromyslovaya khimiya. Regulirovanie fil'tratsionnykh potokov vodoizoliruyushchimi tekhnologiyami pri razrabotke neftyanykh mestorozhdeniy (Regulation of filtration flows by waterproofing technologies in the development of oil fields), Moscow: Publ. of Gubkin University, 2010, 225 p.
5. Zemtsov Yu.V., Lytkin A.E., Algorithm of stage-wise analysis and results of chemical eor procedure application (In Russ.), Neft'. Gaz. Novatsii, 2018, no. 7, pp. 48–52.
6. Gazizov A.A., Uvelichenie nefteotdachi neodnorodnykh plastov na pozdney stadii razrabotki (Enhanced oil recovery of heterogeneous reservoirs at a late stage of field development), Moscow: Nedra-Biznestsentr Publ., 2002, 639 p.
7. Shandrygin A.N., Lutfullin A., Main trends in the development of enhanced reservoir coverage by stimulation in Russia (In Russ.), SPE-117410-RU, 2008, DOI:10.2118/117410-MS
8. Ganiev I.M., Yakovlev K.V., Belykh A.M., Ismagilov T.A., On specifics of using flow redirection technologies at late stages of fractured carbonate reservoirs development (In Russ.), Neftegazovoe delo, 2020, V. 18, no. 3, pp. 51–60.
9. Belykh A.M., Perevoshchikov D.O., Ganiev I.M., Ismagilov T.A., Innovative approach to the application of physicochemical enhanced oil recovery in carbonate reservoirs of Udmurtneft OJSC fields (In Russ.), Territoriya Neftegaz, 2018, no. 6, pp. 36–50.
10. Belykh A.M., Perevoshchikov D.O., Ganiev I.M., Ismagilov T.A., Improvement of flow diverting technologies based on polymer systems for carbonate reservoirs of Udmurtneft (In Russ.), Inzhenernaya praktika, 2016, no. 7, pp. 22–27.
