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Islamov R.A.
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islamovra@bnipi.rosneft.ru |
“RN-BashNIPIneft” LLC (“Rosneft” PJSC Group Company) Ufa |
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Andreev E.Yu.
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“RN-BashNIPIneft” LLC (“Rosneft” PJSC Group Company) Ufa |
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Volkov M.G
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“RN-Technology” LLC Moscow |
DOI: 10.24412/2076-6785-2024-2-34-38
Abstract
Oil production from low-permeability reservoirs with permeability less than 10-15 m2 requires specialists to develop new approaches to calculate the performance of horizontal wells with multistage hydraulic fracturing. Heterogeneous structure and distribution of reservoir properties and overlapping intervals of nonreservoir, trajectory of horizontal well section, intervals of fracture initiation and hydraulic fracture design, fluid leakage into the reservoir, interference with neighboring wells should be taken into account. Previously developed numerical methods do not allow to take into account all the above factors, their improvement is required. The article describes a method for designing a horizontal well completion system with multistage hydraulic fracturing. The method takes into account the distribution of filtration-capacitance and geomechanical properties of the formation, hydraulic fracture design, leakage of fracturing fluid into the formation, fracture interference of neighboring wells. The method is realized in a hydrodynamic simulator and tested on actual data from wells drilled in a low-permeability reservoir.
Materials and methods
To solve the problem, the paper proposes:
• using a neural network to select the hydraulic fracture initiation interval;
• calculation of geometry and distribution of properties of each fracture in the hydraulic fracture simulator;
• equalizing of leakage distribution in hydrodynamic simulator and fracture simulator;
• use of permeability reduction factor in the hydrodynamic simulator in the zones of fluid penetration.
Keywords
horizontal well, hydraulic fracturing, neural network, low-permeability reservoir, hydrodynamic modeling, geomechanical modeling
