Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 69964 10.2205/2023ES000886 vjoavb ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Evaluation of the Geomechanical Properties of Bashkirian Carbonate Rocks at the Tatarstan Republic for Optimization of Hydraulic Fracturing Оценка геомеханических свойств карбонатных пород башкирского яруса Республики Татарстан с целью оптимизации гидроразрыва пласта https://orcid.org/0000-0001-9184-2446 Зиганшин Эдуард Ришадович Ziganshin Eduard Rishadovich ERZiganshin@kpfu.ru

кандидат геолого-минералогических наук;

candidate of geological and mineralogical sciences;

 https://orcid.org/0000-0002-0959-5085 Кольчугин Антон Николаевич Kolchugin Anton Nikolaevich Anton.kolchugin@gmail.com

кандидат геолого-минералогических наук;

candidate of geological and mineralogical sciences;

 https://orcid.org/0009-0007-6742-2899 Даутов Айрат Наильевич Dautov Ayrat Nail'evich adautov@kpfu.ru https://orcid.org/0000-0003-3234-0870 Нуриева Евгения Михайловна Nurieva E. M.

кандидат геолого-минералогических наук;

candidate of geological and mineralogical sciences;

 Казанский (Приволжский) федеральный университет Kazan (Volga) Federal University Казанский федеральный университет Kazan Federal University 15 12 2023 15 12 2023 23 5 1 16 11 09 2023 14 12 2023 https://rjes.ru/en/nauka/article/69964/view

С каждым годом процент разработки сложных коллекторов углеводородов увеличивается, что связано с истощением традиционных запасов нефти и газа. Карбонатные отложения относятся к сложным породам-коллекторам ввиду высокой степени неоднородности внутреннего строения скелета породы и порового пространства. Более подробное изучение литологических особенностей и физических свойств карбонатных пород является важной и неотъемлемой частью освоения данных объектов. В настоящей работе проведен комплексный анализ литологических и геомеханических характеристик отложений среднекаменноугольных толщ Дачного месторождения нефти, расположенного на юго-востоке Республики Татарстан. Основное внимание при исследованиях было сосредоточено на оценке хрупкости горных пород. Этот параметр является одним из необходимых для корректного прогнозирования операций гидроразрыва пласта. Результатом исследований является выделение карбонатных фаций и литологических типов согласно классификации Данхема, слагающих разрез, и их геомеханическая характеристика, а также оценка хрупкости горных пород различными методами.

Every year, the percentage of development of complex and unconventional hydrocarbon reservoirs is increasing, which is associated with the depletion of traditional oil and gas reserves. Carbonate reservoirs are hard-to-recover reservoir rocks due to the high degree of heterogeneity. A more detailed study of the lithological features and physical properties of carbonate rocks is an important and integral part of the complex reservoirs development. In the present work has done a comprehensive analysis of the lithological and geomechanical properties of the Middle Carboniferous strata deposits of the Dachnoye oil field, located in the southeast of the Republic of Tatarstan. The main attention in the research was focused on the estimation of the britleness of rocks. Britleness index is necessary for correct prediction of hydraulic fracturing. The result of the research is the identification of carbonate facies and their geomechanical characteristics, as well as the estimation of the britleness of rocks by various methods.

 геомеханика литология геология лабораторное исследование карбонатная порода хрупкость горных пород гидроразрыв пласта geomechanics lithology geology laboratory study carbonate rock rock britleness hydraulic fracturing Работа выполнена за счет средств субсидии, выделенной Казанскому федеральному университету для выполнения государственного задания в сфере научной деятельности, проект №FZSM-2023–0014. The work was carried out using subsidies allocated to the Kazan Federal University to fulfill the state assignment in the field of scientific activity, project No. FZSM-2023–0014.

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