Analysis of a more realistic well representation during secondary recovery in 3-D continuum models

Sadeghnejad, Saeid; Masihi, Mohsen

doi:10.1007/s10596-017-9640-5

Cited by 9 publications

(2 citation statements)

References 59 publications

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“…This process can be reversed when the oil production of this well exceeds the oil-rate target by any reason, e.g., well stimulation, secondary recovery, or EOR scenarios. Furthermore, drilling the best location of injection and producing wells is a challenging task that can a ect the reservoir connectivity between wells [39][40][41][42][43][44]. In addition, a well or its connections might automatically be closed due to the violation of some other economic constraints.…”

Section: Materials and Methods 21 Statement Of The Problemmentioning

confidence: 99%

Simulation Optimization of Water Alternating Gas (WAG) Process under Operational Constraints: A Case Study in the Persian Gulf

2019

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The optimization of the e ciency of Water Alternating Gas (WAG) ooding projects can guarantee the success of these projects. Many operational constraints can indirectly a ect ooding e ciency. Their e ects are not normally considered during routine optimizations. The main aim of this study is to determine the in uence of these constraints (e.g., maximum water-cut, maximum Gas-Oil Ratio (GOR), and minimum Bottom Hole Pressure (BHP) during the WAG process). Implementing a reservoir simulator coupled with Simulating-Annealing (SA) enables us to discover the e ects of these constraints during simulation optimization. The developed optimizer is applied to a case study from an Iranian formation located in the Persian Gulf. The recovery factor of WAG ooding is compared with that of the conventional water ooding and gas injection. Moreover, the optimization of individual and simultaneous WAG parameters is analyzed. Results indicate that: (a) Operational constraints can not only alter the production mechanism but also directly a ect the ultimate recovery factor; (b) The recovery factor of simultaneous optimization of all WAG parameters is higher than that of individual parameter optimization; (c) Irrespective of the approach to parameter optimization, WAG ratio (or the volume fraction of injected water to gas) remains almost constant during all optimizations, showing the in uence of this parameter during WAG ooding scenarios.

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Section: Materials and Methods 21 Statement Of The Problemmentioning

confidence: 99%

Simulation Optimization of Water Alternating Gas (WAG) Process under Operational Constraints: A Case Study in the Persian Gulf

2019

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“…Much hydrocarbon remains upswept at the end of a waterflooding operation because of the injected water channeled through high-permeable zones. Several attempts have been made to increase the sweep efficiency and correct the conformance problem in heterogeneous reservoirs ( de Aguiar et al, 2020, Ashrafizadeh et al, 2017Farasat et al, 2017;Ghriga et al, 2019;Hashmet et al, 2017;Koochakzadeh et al, 2021a;Sadeghnejad and Masihi, 2017). Among them, pH-sensitive microgel injection recently received attention.…”

Section: Introductionmentioning

confidence: 99%

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

Tohidi

Sadeghnejad

2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Waterflooding is widely implemented to enhance oil recovery. The displacement efficiency of this method depends on multiple factors, including makeup water properties, native oil, and formation rock. The incompatibility of the injected fluid with the pore fluid can result in a chemical non-equilibrium state within porous media that may result in different chemical reactions that depend on the type and number of the existing components within the system. The present research aims to develop a mathematical model capable of handling multiple geochemical reactions to predict pH and ions concentration during an acid injection while considering alterations of rock and fluid properties. The dependency of fluid properties (viscosity and density) is considered based on the system ionic concentration, which can be more crucial in high saline media. The validity of the developed model was evaluated using the experimental literature data. The results reveal that in addition to the effect of injected fluid pH, the process efficiency can be influenced by the composition of the injected fluid. In other words, fluid properties dependency on salinity and the injected fluid composition is significant during geochemical simulations. Comparing homogenous and heterogenous mineral distribution shows an insignificant sensitivity to the amount heterogeneity while the total mineral contents remain constant in both cases.

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Dual-scale pore network reconstruction of vugular carbonates using multi-scale imaging techniques

Moslemipour

Sadeghnejad

2021

Advances in Water Resources

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Analysis of a more realistic well representation during secondary recovery in 3-D continuum models

Cited by 9 publications

References 59 publications

Simulation Optimization of Water Alternating Gas (WAG) Process under Operational Constraints: A Case Study in the Persian Gulf

Simulation Optimization of Water Alternating Gas (WAG) Process under Operational Constraints: A Case Study in the Persian Gulf

Geochemical modelling of acid injection in high salinity sandstones at reservoir conditions

Dual-scale pore network reconstruction of vugular carbonates using multi-scale imaging techniques

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