scienceitНаука. Инновации. ТехнологииScience. Innovations. Technologies2308-4758North-Caucasus Federal University10.37493/2308-4758.2025.1.8scienceit-716Research ArticleРАЗРАБОТКА И ЭКСПЛУАТАЦИЯ НЕФТЯНЫХ И ГАЗОВЫХ МЕСТОРОЖДЕНИЙ (технические науки)DEVELOPMENT AND OPERATION OF OIL AND GAS FIELDS (technical sciences)Особенности добычи нефти из нефтематеринских породSome features of source rock oil productionhttps://orcid.org/0009-0007-6402-5134ИвановД. А.IvanovD. A.

Денис Александрович Иванов – ведущий инженер отдела мониторинга добычи нефти и газа

Researcher ID: LDG-6022-2024 

д. 3, стр. 1б, Покровский б-р, Москва, 109028 

д. 186а, ул. Советская, г. Альметьевск, 423450 

Denis A. Ivanov – Lead Engineer, Oil and Gas Production Monitoring 

Researcher ID: LDG-6022-2024 

3, Bldg 1b, Pokrovsky Blvd, Moscow, 109028 

186a, Sovietskaya St., Almetyevsk 

denis_a_ivanov@hotmail.comЛУКОЙЛ-Инжиниринг; Высшая школа нефти, Передовая инженерная школа нефтиРоссияLUKOIL-Engineering; Higher School of Petroleum, Advanced Petroleum Engineering SchoolRussian Federation20251804202501177214Copyright © Иванов Д.А., 20252025Иванов Д.А.Ivanov D.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://scienceit.elpub.ru/jour/article/view/716

В работе описано текущее состояние добычи из нефтематеринских пород в мире и существующее положение в плане проведения исследований. Добыча из нефтематеринских пород в целом характеризуется двумя последовательными псевдоустановившимися режимами фильтрации из трещиноватой и матричной среды. В работе применен анализ добычи с использованием метода динамического материального баланса для скважин, которые работают в условиях отбора нефти из нефтематеринских пород в псевдоустановившемся режиме на одном объекте в Западной Сибири. Анализ позволил определить объем дренируемых запасов отдельно из трещиноватой среды (включая вторичные трещины от ГРП) и матричной среды. По итогам анализа для отдельных скважин на более поздней стадии определен третий псевдоустановившийся режим с увеличенным объемом дренируемых запасов. Третий режим характеризуется увеличением плотности добываемой продукции и ранее не описан в литературе. Наиболее вероятным источником дополнительного более плотного объема является битуминозная органика, которая в первичном состоянии находится в твердом адсорбированном виде. Данные явления могут происходить только при добыче из нефтематеринских пород, где имеется изобилие битуминозной органики в твёрдом адсорбированном и жидком растворенном состоянии. Всю природу происходящего на текущем этапе описать не представляется возможным, но вероятно существует ряд совокупных причин включая расширение флюидов, взаимодействие жидкости ГРП с породой и растрескивание породы за счет депрессии с изменением геометрии порового пространства в процессе разработки. Данные явления характерны только для отдельных горизонтальных скважин с МГРП и не присутствуют, к примеру, при добыче из вертикальных скважин без ГРП.

The paper describes the current state of source rock oil production in the world and the current state of research. Production from source-rocks is generally characterized by two consecutive pseudosteady state flows from the fractured and the matrix media. The dynamic material balance method is used to analyze production data for wells that produce in a pseudo-steady-state from one sourcerock field in Western Siberia. The analysis allowed us to determine the volume of drained reserves separately from the fractured medium (including secondary fractures from hydraulic fracturing) and the matrix medium. Based on the results of the analysis, a third pseudosteady-state regime with an increased volume of drained reserves was determined for individual wells at a later stage of production. The third mode is characterized by an increase in the density of the produced oil products and has not been previously described in the literature. The most likely source of an additional denser fluid is the bituminous organic matter, which in its primary state is in a solid adsorbed form. These phenomena can occur only in source-rock, where there is an abundance of bituminous organic matter in a solid adsorbed and liquid dissolved state. It is not possible to describe the entire nature of what is happening at the current stage, but full description will include a combination of effects including the expansion of fluids, the interaction of hydraulic fracturing fluid with rock and rock cracking due to depression with a change in the geometry of the pore space during development. These phenomena are typical only for individual horizontal wells with multistage hydraulic fractioning and are not present, for example, when producing from vertical wells without hydraulic fracturing.

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The authors declare that there are no conflicts of interest present.