Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46610 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Estimation of in-situ horizontal stresses using the linear poroelastic model and minifrac test results in tectonically active area Estimation of in-situ horizontal stresses using the linear poroelastic model and minifrac test results in tectonically active area Hayavi Mohammad Tabaeh Hayavi Mohammad Tabaeh Abdideh Mohammad Abdideh Mohammad Department of Petroleum Engineering, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran ru Department of Petroleum Engineering, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran ru Department of Petroleum Engineering, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran ru Department of Petroleum Engineering, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran ru 16 4 1 9 29 10 2021 https://rjes.ru/en/nauka/article/46610/view

Accurate estimation of in situ stresses of a subsurface formation is important to get a basic knowledge of formation structure and position of anomalies, groundwater flows, performing fracturing operations, drilling operations, oil and/or gas production stimulation, wellbore stability analysis, and coupled geomechanics-reservoir simulation in petroleum engineering. In this paper, at first a new method for estimation of minimum and maximum horizontal stresses in tectonically active area based on the modification of linear poroelastic model and minifrac test results is presented. The rock mechanical properties used in poroelastic model are determinded using the artificial neural networks. Then, this method is applied to field data in order to verify the applicability of the modified linear poroelastic model. The results indicated that the agreement between the results of minifrac test and modified linear poroelastic model is satisfactory. Furthermore, application of artificial neural networks in this methodology increases the accuracy of linear poroelastic model for estimation of horizontal stresses.

Accurate estimation of in situ stresses of a subsurface formation is important to get a basic knowledge of formation structure and position of anomalies, groundwater flows, performing fracturing operations, drilling operations, oil and/or gas production stimulation, wellbore stability analysis, and coupled geomechanics-reservoir simulation in petroleum engineering. In this paper, at first a new method for estimation of minimum and maximum horizontal stresses in tectonically active area based on the modification of linear poroelastic model and minifrac test results is presented. The rock mechanical properties used in poroelastic model are determinded using the artificial neural networks. Then, this method is applied to field data in order to verify the applicability of the modified linear poroelastic model. The results indicated that the agreement between the results of minifrac test and modified linear poroelastic model is satisfactory. Furthermore, application of artificial neural networks in this methodology increases the accuracy of linear poroelastic model for estimation of horizontal stresses.

 Minifrac tests linear poroelastic model horizontal stress tectonically active area Minifrac tests linear poroelastic model horizontal stress tectonically active area

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