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Keywords: wettability alteration
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Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210246-MS
... interaction hydraulic fracturing fluid marcellus shale maturity wettability alteration compound reaction kerogen wettability heidari 2019 Abstract The recent increase in unconventional oil and gas exploration and production has promoted active research on hydraulic fracturing, but the impact...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210042-MS
... recovery from the fractured chalk reservoir, Ekofisk, on the Norwegian Continental Shelf. Extensive laboratory studies the last decades have shown that Smart Water flooding has potential of greatly improving oil recovery beyond that obtained by standard waterflooding, due to wettability alteration, which...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206023-MS
... treatments can increase the relative permeability to condensate liquid by factors of 1.89 and 1.22 respectively, due to the wettability alteration mechanism. Capillary pressure calculations show that GS can reduce the capillary pressure by around 40% on average, while TCF leads to a 70% reduction...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206080-MS
... simulator equilibrated gas condensate saturation wettability alteration experimental data Introduction Conventional gas resources are at their last stages of production and to fulfill the worldwide energy demand, the production from tight unconventional resources have gained wide attention. Gas...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206088-MS
... Abstract The potential of tuned-composition waterflooding to enhance oil recovery from carbonate reservoirs has been widely investigated in the literature. The consensus is that wettability alteration occurs because of the electrostatic interactions between the carbonate rock surface...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205910-MS
... system, compared to 11.4% from low-salinity brine only. The oil recovery is enhanced by a single mechanism or synergy of several mechanisms that includes interfacial tension (IFT) reduction by surfactant, capillary imbibition, favorable wettability alteration by ketone, and osmotic low-salinity brine...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206294-MS
... experiments on calcite were carried out at 347 K and atmospheric pressure with 68000-ppm reservoir brine (RB), and 4 different concentrations of glycine, acetate, and formate solutions in RB. To test the hypothesis that calcite dissolution is one of the main mechanisms in wettability alteration by glycine, we...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206346-MS
... demonstrates that there is not a "one size fits all" surfactant design. complex reservoir reservoir temperature shale gas np-12 cloud computing oil shale experiment surfactant molecule cloud point surfactant wettability alteration recovery factor unconventional resource technology conference...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206327-MS
... that the recovery of oil in lower permeability significantly improved when applying a cationic surfactant compared to a non-ionic surfactant. Standnes and Austad (2003) showed that when the cationic surfactant concentration is lower than the critical micelle concentration (CMC), no wettability alteration process...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201482-MS
... concentration experiment zeta potential carboxylic acid enhanced recovery upstream oil & gas lara orozco contact angle scm adsorbed carboxylic acid equilibrium constant reaction complexation reaction lsw wettability alteration oil recovery glycine speciation experimental data Tuning...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-204276-STU
... at the nanoscale, contributed to wettability alteration from oil wet to intermediate wet as brine salinity reduced and in the presence of Mg 2+ ions on the limestone surface. Calcite dissolution accompanied with a spike in brine pH contributed to the reduced electrostatic bond attraction and impacted...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201586-MS
... in place is recovered from the tertiary alternating injection of NPs dispersed in LSW and surfactant. The difference in the results is attributed to the wettability alteration by the NPs beyond the limit of the LSW and the reduction in the IFT with/without surfactant. The interpretation of the results...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201670-MS
... the strength of adsorption, which in turn impacts the magnitude of wettability alteration during LSWF. Further, partitioning of SACs in brine is observed to influence the type of interactions taking place in the rock-oil-brine system, where carboxylate salts (soaps) generated in-situ are detected only...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201747-MS
... upstream oil & gas energy & fuel enhanced recovery adsorption composition silica wettability mechanism morrow carboxylate waterflooding brine functional group crude oil rock surface petroleum science wettability alteration oil recovery Introduction More than 60...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201754-MS
... for wettability alterations using contact angles. Surfactants with lower IFT and lower contact angles were selected for spontaneous imbibition. In spontaneous imbibition experiments, some formulations produced a significant amount of oil compared to the control samples without any surfactants. Two cationic...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201779-MS
... Single-phase and oil recovery corefloods, involving wettability alteration in carbonate rocks, reported in the literature were simulated using the model described above. Brine compositions and details of the simulations are given in Tables 2 and 3 , respectively. Simulation S1 was conducted...

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