Effect of heterogeneity on engineered water injection in carbonates using five-spot sector model:A numerical study

作     者：Jamiu Oyekan Adegbite Emad Walid Al-Shalabi 

作者机构：Petroleum Engineering DepartmentKhalifa University of Science and TechnologySas Al Nakhl CampusAbu DhabiUnited Arab Emirates 

出 版 物：《Petroleum》 (油气（英文）)

年 卷 期：2022年第8卷第3期

页      面：375-390页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 082002[工学-油气田开发工程] 

基　　金：partially supported by Khalifa University under Award No.[FSU-2018-26] 

主　　题：Engineered water injection(EWI) Low salinity water injection(LSWI) Field application Permeability channeling Gravity underride 

摘      要：One of the promising and emerging enhanced oil recovery techniques in both sandstones and carbonates is engineered water injection(EWI).However,few studies discussed the field-scale applications of this technique in heterogeneous carbonate *** paper is an extension of our previous work of the EWI technology at *** research numerically investigates heterogeneity effect on EWI technique in carbonates at field-scale using five-spot *** synthetic five-spot sector models were considered including homogeneous,heterogeneous with permeability channeling,and heterogeneous with gravity *** results showed that EWI improves both volumetric and displacement sweep efficiencies compared to conventional formation water injection(FWI)for all models ***,tracer method is recommended for better estimation of volumetric sweep efficiency as opposed to fractional flow ***,secondary EWI outperforms other techniques including secondary FW and tertiary *** addition,the observed delay in tertiary EWI can be reduced by increasing well injection pressure and sulfate concentration in the engineered *** optimum sulfate concentration of 25,000 ppm is recommended for achieving the highest oil recovery by *** study gives more insight into understanding the performance of the EWI technique at *** for boosting the performance of this technique have been discussed,which assure more certainty and lower risk.