TY - JOUR

T1 - Well test simulation accounting induced fracture in a linear development system

AU - Kopeykin, R. R.

AU - Abdullin, R. F.

AU - Kalinin, S. A.

AU - Starovoytova, B. N.

AU - Baykin, A. N.

AU - Golovin, S. V.

N1 - Моделирование гидродинамических исследований скважин с учетом автоГРП в рядной системе разработки / Р. Р. Копейкин, Р. Ф. Абдуллин, С. А. Калинин [и др.] // Нефтяное хозяйство. – 2023. – № 12. – С. 30-35.

PY - 2023/12

Y1 - 2023/12

N2 - The correct well testing data interpretation is of particular interest in case of injection wells with the induced fractures (waterflooding frac-tures) that occur due to the high injection pressure. Standard software used for the well testing simulation does not have the functionality to model filtration processes with hydraulic fractures of varying geometry and conductivity. The coupled hydrogeomechanical model accounting the waterflooding fractures is used in this work for the interpretation of field experiment data. The well test is simulated in two selected areas of oil fields with wells oriented along maximum region stress. In the first case, one vertical injection well surrounded by production wells is considered. In the second one, the sector of the field development system is treated. The sector includes two horizontal injection wells with multi-stage hydrofracturing and production wells located nearby. It is shown that in the both cases the model pressure curves are in an acceptable agreement with the field data. The comparison of the field data with the results of the standard well test modeling shows that the discrepancy occurs when the fracture length changes. In the case of the sector of field development system, the model is able to simu-late the performance of two injection wells simultaneously. Numerical calculations expose the possibility of main fracture growth between two injection wells. During the pressure falloff test, the fractures close quickly due to the large leaks into the formation. When the injection is resumed, the waterflooding fractures grow rapidly and merge into the main fracture. The fracture propagation rate is used to improve the multiphase hydrodynamic model. The hydrodynamic simulations demonstrate the possible positive impact of the waterflooding fracturing on the economic performance of the development system by reducing the number of injection wells.

AB - The correct well testing data interpretation is of particular interest in case of injection wells with the induced fractures (waterflooding frac-tures) that occur due to the high injection pressure. Standard software used for the well testing simulation does not have the functionality to model filtration processes with hydraulic fractures of varying geometry and conductivity. The coupled hydrogeomechanical model accounting the waterflooding fractures is used in this work for the interpretation of field experiment data. The well test is simulated in two selected areas of oil fields with wells oriented along maximum region stress. In the first case, one vertical injection well surrounded by production wells is considered. In the second one, the sector of the field development system is treated. The sector includes two horizontal injection wells with multi-stage hydrofracturing and production wells located nearby. It is shown that in the both cases the model pressure curves are in an acceptable agreement with the field data. The comparison of the field data with the results of the standard well test modeling shows that the discrepancy occurs when the fracture length changes. In the case of the sector of field development system, the model is able to simu-late the performance of two injection wells simultaneously. Numerical calculations expose the possibility of main fracture growth between two injection wells. During the pressure falloff test, the fractures close quickly due to the large leaks into the formation. When the injection is resumed, the waterflooding fractures grow rapidly and merge into the main fracture. The fracture propagation rate is used to improve the multiphase hydrodynamic model. The hydrodynamic simulations demonstrate the possible positive impact of the waterflooding fracturing on the economic performance of the development system by reducing the number of injection wells.

KW - hydrogeomechanical modeling

KW - induced fracture

KW - inflow performance relationship

KW - linear development system

KW - main fracture

KW - model adaptation

KW - well test

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85199282882&origin=inward&txGid=0cdc442c7a4ea7d9965c274b497b3365

UR - https://www.elibrary.ru/item.asp?id=60365649

UR - https://www.mendeley.com/catalogue/538b66fd-b53d-3747-8230-2440205f203f/

U2 - 10.24887/0028-2448-2023-12-30-35

DO - 10.24887/0028-2448-2023-12-30-35

M3 - Article

SP - 30

EP - 35

JO - Neftyanoe khozyaystvo - Oil Industry

JF - Neftyanoe khozyaystvo - Oil Industry

SN - 0028-2448

IS - 12

ER -