Justification of low-productive oil deposits flooding systems in the conditions of limited information amount

The article is devoted to the issue of optimizing the development system and increasing the efficiency of carbonate deposits of the Tournaisian stage of the Chetyrmanskoye field developing, and the formation of a strategy for their additional development. As a result of the horizontal drilling, the rate of withdrawal from current recoverable reserves in the main area in terms of reserves increased from 0.3 to 5%, which confirms the high efficiency of horizontal wells drilling with multi-stage hydraulic fracturing in reservoirs with high stratification and heterogeneity degree of the productive section in order to increase the rate of reserves production and achieve the approved oil recovery factor, as well as the high efficiency of the proposed methodological approach in the design of the facility development by a system of horizontal wells, the correct choice of the facility development strategy in the design solutions formation. Keywords: oil fields development; carbonate deposits; development of reserves; multi-stage hydraulic fracturing; horizontal well.

Section: Introductionunclassified

Results of the development system optimization and increasing the efficiency of carbonate reserves extraction of the turney stage of the Chetyrmansky deposit

Khisamiev¹,

Bashirov²,

Mukhametshin³

et al. 2021

“…Данный метод является прямым и позволяет изучать реальные направления движения закачиваемой жидкости, в отличие от геофизических и гидродинамических исследований. Данные, полученные по результатам проведенных трассерных исследований, позволяют осуществлять наиболее точный контроль за разработкой [5].…”

Section: Introductionunclassified

Evaluation the volume of distribution of the injected water and the interaction between injection and production wells probabilistic and statistical methods

Ponomareva¹

2021

The article describes the application of probabilistic-statistical methods for solving the urgent problem associated with determining the direction of movement of filtration flows. Today, the oil industry enterprises for these purposes use methods of hydrolistening and indicator research. These methods can most accurately assess the direction of movement of the filtration flows, but due to the high cost and duration of these studies in the Perm Krai fields are not often carried out. In this paper, we propose to study the interaction between production and injection wells by correlating the accumulated characteristics of their work. An analysis of the dynamics of the correlation coefficient between the accumulated values of water injection and liquid production performed in this way made it possible to establish qualitative indicators of the waterflooding system within the considered element of the development system. The obtained qualitative indicators of the waterflooding system demonstrate a high reliability of practical application, which is confirmed by the materials of tracer studies, as applied to the carbonate deposits of the Gagarinskoye field. Keywords: tracer studies; oil production; water injection; filtration flows; correlation coefficient; angular coefficient; carbonate reservoir.

“…В этих условиях возрастает роль методов воздействия на призабойную зону и пласт в целом [11][12][13][14][15], научно-обоснованный выбор технологий [16][17][18][19] и параметров воздействий [20][21][22][23], определение условий эффективного применения тех или иных методов [24][25][26][27][28][29][30]. Причем важно решать эти актуальные вопросы дифференцированно по различным группам объектов [31][32][33][34][35][36].…”

unclassified

Methodological approach to optimal geological and technological characteristics determining when planning hydraulic fracturing at multilayer facilities

Grishchenko¹,

Rabaev²,

Asylgareev³

et al. 2021

The paper considers the issue of increasing the hydraulic fracturing efficiency in a multilayer facility at the final stage of development with an uneven degree of reserves development along the section. Based on the results of the analysis, it was found that the upper layers, which have the worst filtration-reservoir properties, are less developed in comparison with the highly productive lower ones. When hydraulic fracturing was carried out in the upper formations, some of the operations had low success due to the breakthrough of hydraulic fractures into the lower depleted formations. On the basis of the revealed dependencies, the work determined the optimal specific loading of proppant per meter of effective power, depending on the geological conditions, and maps of the prospects for hydraulic fracturing are built. Keywords: oil fields development; hydraulic fracturing; hydraulic fracturing optimization; multilayer facilities.