Kynovian-Pashian reservoir section is the primary production target of the unique Romashkinskoye field and contains the field’s largest oil reserves. The whole production target is divided to 21 individual development areas by injection well rows. These areas differ in size, geological structure, confinement of key strata to different parts of the section, productivity and rates of development. The article presents the order of drilling out of individual areas, their geological structure, heterogeneity, the structure of recoverable reserves by reservoirs and groups of reservoirs. The scoring method was used to analyze the geological factors that produced the most pronounced effect on oil reserves recovery efficiency. This method relies on a set of parameters that characterize peculiar geological aspects intrinsic to each area. Displacement efficiency, that is the relative volume of fluid produced due to water injection, was assumed as technological impact factor. Production performance data are provided as well as current oil recovery factors plotted versus the ratio of injected volume to pore volume for each area. Based on obtained oil recovery factors, the areas are subdivided into several groups: high-performance, efficient, sufficiently efficient, medium- and low-performance. Effects of various parameters on oil production are analyzed. Correlation analysis suggests that oil recovery factors obtained in different areas of the Romashkinskoye field fully conform to geological structure of the reservoirs and applied development systems, production performances completely agree with geological and physical characteristics of the areas, and operating parameters. Graphical forecast oil production data for all areas of the field are provided until the end of development period.
References
1. Blinov A.F., Diyashev R.N., O roli geologicheskikh parametrov i tekhnologicheskikh upravlyayushchikh faktorov pri razrabotke neftyanykh mestorozhdeniy (On the role of geological parameters and technological control factors in the development of oil fields), Collected papers “Kontrol’ i regulirovanie razrabotki, metody povysheniya nefteotdachi plastov – osnova ratsional’noy razrabotki neftyanykh mestorozhdeniy” (Control and regulation of development, methods of enhanced oil recovery - the basis for the rational development of oil fields), Proceedinds of All-Russian meeting on the development of oil fields, Almetyevsk, June 5-9, 2000 - Almetyevsk, 2000, Part 1, pp. 153-171.
2. Diyashev R.N., Blinov A.F., The analysis of performance of development of Devonian sediments at Romashkinskoye deposit areas in view of geological and technological factors (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2006,no. 3, pp. 94-99.
3. Khisamov R.S., Shelepov V.V., Baziv V.F., Blinov A.F., Comparative estimation of the effectiveness of implemented system of development at Romashkinskoye field areas (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2010, no. 7, pp. 24-28.
4. Baziv V.F., Lisovskiy N.N., Mal’tsev S.A. et al., Sopostavitel’naya otsenka effektivnosti realizuemykh sistem razrabotki neftyanykh mestorozhdeniy v svyazi s prognozom KIN (Comparative assessment of the effectiveness of the implemented systems for the development of oil fields in connection with the forecast of oil recovery factor), Collected papers “Opyt razvedki i razrabotki Romashkinskogo i drugikh krupnykh neftyanykh mestorozhdeniy Volgo-Kamskogo regiona” (Experience in exploration and development of Romashkinskoye and other large oil fields in the Volga-Kama region), Proceedings of Scientific and practical conference dedicated to the 50th anniversary of the discovery of Devonian oil from the Romashkinskoye field, Leninogorsk, March 17-18, 1998, Kazan: Novoe Znanie Publ., 1998, pp. 37-62.
5. Baziv V.F., Ekspertno-analiticheskaya otsenka effektivnosti sistem razrabotki neftyanykh mestorozhdeniy s zavodneniem (Expert-analytical evaluation of the effectiveness of oil field development systems with waterflooding), Moscow: Publ. of VNIIOENG, 2007, 393 p6
6. Blinov A.F., Kul’mamirov A.L., Sopostavitel’nyy analiz effektivnosti razrabotki Abdrakhmanovskoy i Minnibaevskoy ploshchadey Romashkinskogo mestorozhdeniya (Comparative analysis of the development efficiency of the Abdrakhmanovskaya and Minnibaevskaya areas of the Romashkinskoye field), Proceedings of TatNIPIneft’, 2016, V. 84, pp. 43-51.
