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MICRO-SCALE PREFORMED PARTICLE GEL/SURFACTANT EOR PROCESS FOR HIGH TEMPERATURE AND HARD BRINE RESERVOIR
Abstract
X reservoir is a high temperature (97 ?), high salinity (TDS 204600 mg/L, divalent cation 11480.34 mg/L), middle-low permeability sandstone reservoir located in Tarim Basin (China). Serious vertical and lateral heterogeneity of formations resulted in the injection water channeling from higher permeability pathways. The harsh conditions make it difficult to further improve oil recovery. This paper provides a micro-scale preformed particle gels (micro-PPG)/surfactant EOR process for X reservoir. The micro-PPG with an average particle sizes of 5-6 microns were prepared by the successive five procedures: synthesis, shearing, drying, smashing, and sieving. The long-term stability of the micro-PPG was evaluated under reservoir temperature and salinity by measuring swelling capacity, diversion pressure and toughness. The reducing IFT ability of the surfactant was studied under reservoir temperature and salinity. The interactions of the surfactant and micro-PPG was also investigated. The results indicated that the 0.2 wt% surfactant obtained a stable ultra-low interfacial tension (IFT) of 3.4?10-3 mN/m with crude oil after aging for 90 days. The micro-PPG still remained a higher diversion pressure of 73.8KPa than the initial value (70.8KPa) and a high toughness index of 0.82 after aged for 90 days, which indicates the micro-PPG had an excellent temperature and salt tolerance. An additional oil recovery of 20% was obtained by flooding experiments.
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References8
Hirasaki G.J., Miller C.A., Puerto M., Recent advances in surfactant EOR, SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, 2008.
Yuan C.-D., Pu W.-F., Wang X.-C., Sun L., Zhang Y.-C., Cheng S., Effects of interfacial tension, emulsification, and surfactant concentration on oil recovery in surfactant flooding process for high temperature and high salinity reservoirs, Energy & Fuels, vol. 29, pp 6165-6176, 2015.
Pu W., Yuan C., Hu W., Tan T., Hui J., Zhao S., Wang S., Tang Y., Effects of interfacial tension and emulsification on displacement efficiency in dilute surfactant flooding, RSC Advances, vol. 6, pp 50640-50649, 2016.
Delbos A., Tabary R., Chevallier E., Moreau P., Surfactant-Polumer Flooding in Hard Brines and High Temperature Reservoirs, in: International Petroleum Technology Conference, International Petroleum Technology Conference, 2014.
J.J. Sheng, B. Leonhardt, N. Azri, Status of polymer-flooding technology, Journal of Canadian Petroleum Technology, vol. 54, pp 116-126, 2015.
Zhao T.H., Xing J.Y., Pu W.F., Dong Z.M., Yuan C.D., Peng G.F., Jin F.Y., Xia J.J., Synthesis and property evaluation of a novel polyacrylamide-montmorillonite composite for water shutoff and profile control in high salinity reservoirs, Polymer Composites, vol. 39, pp 368-376, 2018.
Jin F.-Y., Yuan C.-D., Pu W.-F., Zhang Y.-Y., Tang S., Dong Y.-F., Zhao T.-H., Li Y.-B., Investigation on gelation process and microstructure for partially hydrolyzed polyacrylic amide (HPAm)–Cr (III) acetate–methanal compound crosslinked weak gel, Journal of Sol-Gel Science and Technology, vol. 73, pp 181-191, 2015.
Pu W., Zhao S., Yuan C., Wang S., Ma X., Xie S., Profile control by alternating slugs of polymeric microsphere and surfactant under the condition of high temperature and high salinity, Reservoir Evaluation and Development, vol. 6, pp 69-73, 2016.
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