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pressure-maintenance
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A comparison between two evolutionary optimization algorithms in the performance of the pressure maintenance process in a multi layer reservoir model
, Article Petroleum Science and Technology ; Volume 31, Issue 1 , 2013 , Pages 51-61 ; 10916466 (ISSN) ; Aminshahidy, B ; Pishvaie, M. R ; Sharif University of Technology
2013
Abstract
In this work, the goal is to find the optimum working point for intelligent wells that is equipped with down-hole chokes and producing from a multi-layer reservoir under pressure maintenance process. Two evolutionary optimization algorithms are used and results are compared from different points of view. Therefore, the differential evolution technique and genetic algorithm has been used in conjugation with a reservoir simulator. The overall optimization technique is applied to heterogeneous example problems involving smart and multi segment wells. Improvement of predicted performance, which is as high as 7% in one case is demonstrated for all of the examples studied
Application of different novel and newly designed commercial ionic liquids and surfactants for more oil recovery from an Iranian oil field
, Article Journal of Molecular Liquids ; Volume 230 , 2017 , Pages 579-588 ; 01677322 (ISSN) ; Ayatollahi, S ; Keshavarz, P ; Sharif University of Technology
Elsevier B.V
2017
Abstract
This investigation is conducted on one of the southern Iranian oil fields, which experiences a fault on its gas cap. Therefore, no traditional gas injection and normal water injection for pressure maintenance is suggested. The target is set to inject special compatible and proper type of chemicals in each single well to avoid the pressure increase for the risk of oil and gas spill. Two different sources of aqueous phases, namely formation brine and sea water were used to find the effects of different brine composition on the main mechanisms of releasing the trapped oil, interfacial tension (IFT) and wettability alteration. The obtained results reveal that both the ionic liquid (IL) based...
Smartwater flooding in a carbonate asphaltenic fractured oil reservoir - Comprehensive fluidfluid-rock mechanistic study
, Article 19th European Symposium on Improved Oil Recovery: Sustainable IOR in a Low Oil Price World, IOR NORWAY 2017, 24 April 2017 through 27 April 2017 ; 2017 ; 9789462822092 (ISBN) ; Afzali, S ; Ahmadi, Z ; Mokhtari, R ; Ayatollahi, S ; Sharifi, M ; Kazemi, A ; Nasiri, M ; Fathollahi, S ; Sharif University of Technology
European Association of Geoscientists and Engineers, EAGE
2017
Abstract
Waterflooding has been regarded as an efficient method for pressure maintenance of oil reservoirs. x Improved techniques such as Smart Water flooding as a new EOR/IOR process has gained more momentum based on the recent research activities in this field and the reduction of oil price. Despite many efforts on achieving the governing mechanisms of Smart Water flooding in many individual fields, most of data are sparse and more possible mechanisms which explains all the interactions yet to be introduced. This experimental study used a systematic laboratory framework which is based on seawater treatments at fixed ionic strength to eliminate the ionic strength effects, NaCl considered as the...