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Experimental investigation of inorganic scale deposition during smart water injection - A formation damage point of view
, Article IOR NORWAY 2017 - 19th European Symposium on Improved Oil Recovery: Sustainable IOR in a Low Oil Price World, 24 April 2017 through 27 April 2017 ; 2017 ; 9789462822092 (ISBN) ; Mokhtari, R ; Ayatollahi, S ; Riahi, S ; Malekzade, E ; Sharif University of Technology
Abstract
Smart water injection is determined as an effective EOR process to change the wettability and interfacial tension for better micro/macro sweep efficiencies. This water contains reactive ions such as Mg ∧(2+), Ca ∧(2+) and SO-4 ∧(2-) which can act as potential determining ions and change the surface charge of calcite rocks. One of the major concerns in the execution of an effective waterflood, especially in tight carbonate reservoirs, is the incompatibility between the formation brine and the injecting water. This research work aims to investigate the most important challenge of waterflooding process related to the possible formation damage because of inorganic scale deposition during...
New insight into the filtration control of drilling fluids using a graphene-based nanocomposite under static and dynamic conditions
, Article ACS Sustainable Chemistry and Engineering ; Volume 9, Issue 38 , 2021 , Pages 12844-12857 ; 21680485 (ISSN) ; Jamshidi, S ; Hajipour, M ; Sharif University of Technology
American Chemical Society
2021
Abstract
During oil and gas well drilling, the filtration control of bentonite water-based drilling fluids (BT-WBDFs), as an environmentally friendly fluid, is crucial to avoid formation damage and swelling shale problems. One of the most critical problems is undesirable changes in the rheology and filtration properties of the BT-WBDFs because of salt contamination. Herein, the potential of using both graphene oxide (GO) nanosheets and a graphene oxide-polyacrylamide (GO-PAM) nanocomposite is evaluated for controlling the filtration properties, especially in a salty medium. First, GO nanosheets were functionalized, and then the GO-PAM nanocomposite was synthesized using the solution polymerization...