(EXPERIENCE WITH NON-STATIONARY WATERFLOODING IN THE VIKULOVSKAYA (VK) AND TYUMEN (YUK) FORMATIONS)
В статье рассматриваются результаты опытно-промышленных работ по нестационарному заводнению, проводившихся на одном из месторождений Западной Сибири, которое характеризуется высокой неоднородностью строения продуктивных пластов и высоким уровнем обводненности продукции при низкой выработке запасов нефти. Участки для реализации нестационарного заводнения были выбраны в соответствии с методикой, основанной на использовании четырехслойной геолого-статистической модели, учитывающей наличие литологической связности низкои высокопроницаемых пропластков. Применение данного гидродинамического метода позволило увеличить охват пластов заводнением и вовлечь в процесс дренирования низкопроницаемые пропластки и застойные зоны пласта. Значительная дополнительная добыча нефти была получена в том числе за счет изменения направления фильтрационных потоков. В результате проведенного анализа эффективности сделаны выводы об оптимальном значении комплексного параметра для перспективы реализации нестационарного заводнения. Кроме того, рекомендовано не сочетать реализацию нестационарного заводнения и гидравлический разрыв пласта.
The article deals with the results of experimental-industrial work on non-stationary waterflooding carried out in one of the fields in Western Siberia, which is characterized by high heterogeneity of the structure of productive formations and a high level of production watering at a low oil reserve depletion. Areas for the implementation of non-stationary flooding were selected according to the methodology based on the use of a four-layer geological and statistical model, taking into account the presence of lithological connectivity of low- and high-permeability interlayers. Application of this hydrodynamic method made it possible to increase waterflood coverage of reservoirs and involve low-permeability interlayers and stagnant reservoir zones in the drainage process. Significant additional oil production was obtained, among other things, due to a change in the direction of filtration flows. As a result of the efficiency analysis, conclusions were made about the optimal value of the complex parameter for the prospect of implementing non-stationary waterflooding. In addition, it is recommended not to combine the implementation of non-stationary waterflooding and hydraulic fracturing.
Bokserman A.A., Gavura V.E., Zheltov Y.P., et al. Elastic-Capillary Cyclic Method of Oil Field Development. In: New Methods of Enhanced Oil Recovery: Thematic Scientific and Technical Review. Series: Recovery. Moscow: All-Russian Scientific-Research Institute of Organization, Management and Economics of Oil and Gas Industry; 1968. Pp. 3–22. (In Russ.)
Vladimirov I.V. Non-Stationary Extraction Technologies (Stages of Development, Current State and Prospects). M: All-Russian Scientific-Research Institute of Organization, Management and Economics of Oil and Gas Industry; 2004. (In Russ.)
Gulyaev V.N., Zakharova N.P. Research of Non-Stationary Flooding Influence on the Deposits Development Efficiency of LLC “LUKOIL – Western Siberia”. Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy [Geology, Geophysics and Development of Oil and Gas Fields]. 2019;(9):48–51. (In Russ.)
Arefiev S.V. Main Directions of Improving Field Development Efficiency of LLC “LUKOIL – Western Siberia”. In: collection of reports of the IV Scientific-Practical Conference dedicated to the 20th anniversary of KogalymNIPIneft “Problems of Oil and Gas Complex in Western Siberia and Ways to Improve Its Efficiency” (Tyumen, 24–26 October 2016). Tyumen, 2017. Pp. 20–26. (In Russ.)
Gulyaev V.N., Kiprin I.I., Zakharova N.P. Application of Non-Stationary Technology to Increase Oil Recovery Factor of Fields’ Areas with Hard-to-Recover Oil Reserves. Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy [Geology, Geophysics and Development of Oil and Gas Fields]. 2015;(10):39–44. (In Russ.)
Zakharova N.P., Demyanenko N.A., Mazitov R.F. Approaches to Non-Stationary Water-Flooding Substantiation on the Example of the Deposits of “Povkhneftegaz” Territorial Production Department (TPD). Neftepromyslovoye delo [Oilfield Engineering]. 2019;(1):5–11. (In Russ.)
Yaroslavov A.O. Mathematical Modelling of Non-Newtonian Liquids Filtration in Layered Inhomogeneous Reservoirs and Development of Methods of Statistical Analysis of Geological and Field Data. Dissertation submitted in partial fullfillment of the requirements for the degree of PhD candidate in Engineering Sciences. Tyumen: Tyumen State University; 2003. (In Russ.)
Nazarova L.N., Pyatibratov P.V. Improvement of Flooding Technology as a Method of Managing Development and Increasing Oil Recovery. Oborudovaniye i tekhnologii dlya neftegazovogo kompleksa [Equipment and Technologies for Oil and Gas Industry]. 2021;1(121):46–54. (In Russ.)
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