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Journal of Porous Media
Fator do impacto: 1.752 FI de cinco anos: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

ISSN Imprimir: 1091-028X
ISSN On-line: 1934-0508

Volumes:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.2019025097
pages 1383-1395

MICROSCOPIC SWEEP EFFICIENCY OF POLYMER FLOODING IN CONGLOMERATE RESERVOIRS

Hongxian Liu
Faculty of Petroleum, China University of Petroleum - Beijing at Karamay, Karamay, China
Tao Wan
Faculty of Petroleum, China University of Petroleum - Beijing at Karamay, Karamay, China
Weifeng Lv
Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, China; State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, CNPC, Beijing, China
Changfu Xu
Research Institute of Exploration and Development of Xinjiang Oilfield Company, PetroChina, Karamay, China
Ninghong Jia
State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, CNPC, Beijing, China
Xiaoguang Wang
School of Geoscience, China University of Petroleum (Huadong), China; Research Institute of Exploration and Development of Xinjiang Oilfield Company, PetroChina, Karamay, China
Yukun Chen
Research Institute of Exploration and Development of Xinjiang Oilfield Company, PetroChina, Karamay, China

RESUMO

The objective of this paper is to investigate the microscopic sweep efficiency of polymer flooding in conglomerate reservoirs using computed tomography (CT) scanning and nuclear magnetic resonance (NMR) technology. The microscopic sweep efficiency was studied at two levels: core scale and pore scale. By monitoring the core flooding process using a CT scanning system, the saturation profile along the core and the reconstructed CT images of core sections during the displacement process were obtained. The microscopic sweep efficiency and the displacement mechanisms of polymer flooding in conglomerate reservoirs were analyzed by CT scanning results. The results showed that the oil in the rich oil saturation regions was preferably produced, but oil in the low oil saturation regions can't be mobilized by polymer flooding. The dominant flow channels were observed due to the strong heterogeneity of conglomerate cores during the waterflooding process, resulting in a low waterflooding oil recovery. The NMR experimental results showed that oil mobilization firstly occurred in the large pores in the waterflooding process. The main contribution to oil recovery is from mesopores and macropores during waterflooding. A distinct feature of polymer flooding over waterflooding is to improve the microscopic sweep efficiency. During polymer flooding, most of the oil in the macropores and mesopores was greatly reduced by polymer flooding, although oil in the micropores remained immobilized.

Referências

  1. Bai, B., Liu, Y., Coste, J., and Li, L., Preformed Particle Gel for Conformance Control: Transport Mechanism through Porous Media, SPEReserv. Eval. Eng., vol. 10, no. 2, pp. 176-184, 2007.

  2. Clarke, A., Howe, A.M., Mitchell, J., Staniland, J., and Hawkes, L.A., How Viscoelastic-Polymer Flooding Enhances Displacement Efficiency, SPE J, vol. 21, no. 3, pp. 675-687, 2016.

  3. Clarke, A., Howe, A.M., Mitchell, J., Staniland, J., Hawkes, L., and Leeper, K., Mechanism of Anomalously Increased Oil Displacement with Aqueous Viscoelastic Polymer Solutions, Soft Matter, vol. 11, no. 18, pp. 3536-3541,2015.

  4. Deng, S.G., Lu, W.F., Liu, Q.J., Leng, Z.P., Li, T., Liu, H.X., Gu, H., Xu, C., Zhang, X., and Lu, X., Research on Displacement Mechanism in Conglomerate Using CT Scanning Method, Petrol. Explor. Develop, vol. 41, no. 3, pp. 365-370,2014.

  5. Du, D., Wang, D., Jia, N., Lyu, W., Qin, J., Wang, C., Sun, S., and Li, Y., Experiments on CO2, Foam Seepage Characteristics in Porous Media, Petrol. Explor. Develop, vol. 43, no. 3, pp. 499-505, 2016.

  6. Fiorelli, G.L., Winter, A., Koroishi, E.T., and Trevisan, O.V., Characterization of Coquinas and Dolomites Integrating Electrical Resistivity, Nuclear Magnetic Resonance (NMR) and Porosimetry by Mercury Intrusion (MICP), SPE Reservoir Characterisation and Simulation Conf. and Exhibition, Abu Dhabi, UAE, September 14-16, 2015.

  7. Fu, L., Zhang, G., and Ge, J., Study on Organic Akali-Surfactant-Polymer Flooding for Enhanced Ordinary Heavy Oil Recovery, Colloids and Surfaces A: Physicochem. Eng. Aspects, vol. 508, pp. 230-239,2016.

  8. Gao, H. and Li, H., Determination of Movable Fluid Percentage and Movable Fluid Porosity in Ultra-Low Permeability Sandstone Using Nuclear Magnetic Resonance (NMR) Technique, J. Petrol. Sci. Eng., vol. 133, pp. 258-267, 2017.

  9. Gomaa, A.M., Zhang, B., and Qu, Q., Using NMR Technology to Study the Flow of Fracture Fluids inside Shale Formations, SPE Int. Symposium and Exhibition on Formation Damage Control, Lafayette, LA, February 26-28, 2014.

  10. Javadpour, F. and Fisher, D., Nanotechnology-Based Micromodels and New Image Analysis to Study Transport in Porous Media, J. Canadian Petrol. Technol., vol. 47, no. 2, pp. 30-37, 2008.

  11. Kamari, E. and Rashtchian, D., Immiscible Displacement of a Wetting Fluid by aNon-Wetting One at High Capillary Number in a Micro-Model Containing a Single Fracture, Transp. Porous Media, vol. 94, no. 1, pp. 289-301,2012.

  12. Kil, R., Nguyen, Q., and Rossen, W., Determining Trapped Gas in Foam from CT Images, SPE Annual Technical Conf. and Exhibition, New Orleans, LA, October 4-7, 2009.

  13. Kryuchkov, S., Moon, D., and Kantzas, A., Micro-CT Investigation of Water Influx, Canadian Int. Petroleum Conf., Calgary, Alberta, June 12-14,2007.

  14. Kwak, H.T., Wang, J., and Alsofi, A.M., Close Monitoring of Gel based Conformance Control by NMR Techniques, SPE Middle East Oil and Gas Show and Conf, Manama, Kingdom of Bahrain, March 6-9, 2017.

  15. Lewis, R., Singer, P., Jiang, T., Rylander, E., Sinclair, S., and McLin, R.H., NMR T2 Distributions in the Eagle Ford Shale: Reflections on Pore Size, SPE Unconventional Resources Conf, The Woodlands, Texas, USA, April 10-12,2013.

  16. Li, G., Zhang, G., and Wang, L., Smart Profile Control by Salt-Reversible Flocculation of Cationic Microgels and Polyacrylamide, Energy Fuels, vol. 27, no. 11, pp. 6632-6636,2013.

  17. London, M., Cameron, S.M., Donald, J., and Wassmuth, F.R., Waterflooding Experiments with X-Ray CT Imaging, SPE Heavy Oil Conf. Canada, Calgary, Alberta, Canada, June 10-12, 2014.

  18. Mei, S., Bryan, J., and Kantzas, A., Experimental Study of the Mechanisms in Heavy Oil Waterflooding Using Etched Glass Micromodel, SPE Heavy Oil Conf. Canada, Calgary, Alberta, Canada, June 12-14, 2012.

  19. Meybodi, H.E., Kharrat, R., and Araghi, M.N., Experimental Studying of Pore Morphology and Wettability Effects on Microscopic and Macroscopic Displacement Efficiency of Polymer Flooding, J. Petrol. Sci. Eng., vol. 78, no. 2, pp. 347-363,2011.

  20. Mohammadi, S., Ghazanfari, M.H., and Masihi, M., A Pore-Level Screening Study on Miscible/Immiscible Displacements in Heterogeneous Models, J. Petrol. Sci. Eng., vol. 110, pp. 40-54, 2013.

  21. Ouzzane, J.E., Ramamoorthy, R., Boyd, A.J., Rose, D.A., Okuyiga, M., and Gomaa, N., Application of NMR T2 Relaxation for Drainage Capillary Pressure in Vuggy Carbonate Reservoirs, SPE Annual Technical Conf. and Exhibition, San Antonio, Texas, USA, September 24-27, 2006.

  22. Sandengen, K., Melhuus, K., and Kristoffersen, A., Polymer "Viscoelastic Effect": Does It Reduce Residual Oil Saturation?, J. Petrol. Sci. Eng., vol. 153, pp. 355-363, 2017.

  23. Sayedakram, N.I., Shikhov, I., Arns, J.-Y., and Arns, C.H., Micro-CT Assisted Interpretation ofNMR Responses of Heterogeneous Mixed-Wet Carbonate Rock, SPWLA 57th Annual Logging Symposium, Reykjavik, Iceland, June 25-29, 2016.

  24. Sedaghat, M.H., Hatampour, A., and Razmi, R., Investigating the Role of Polymer Type and Dead End Pores' Distribution on Oil Recovery Efficiency during ASP Flooding, Egypt. J. Petrol, vol. 22, no. 2, pp. 241-247,2013.

  25. Sheng, J.J., Polymer Flooding-Fundamentals and Field Cases, in Enhanced Oil Recovery Field Case Studies, Boston: Gulf Professional Publishing, pp. 63-82, 2013.

  26. Sheng, J.J., Leonhardt, B., and Azri, N., Status of Polymer-Flooding Technology, J. Canadian Petrol. Technol, vol. 54, no. 2, pp. 116-126,2015.

  27. Sun, W. and Tang, G., Visual Study of Water Injection in Low Permeable Sandstone, J. Canadian Petrol. Technol., vol. 45, no. 11, pp. 21-26,2006.

  28. Taylor, K.C. and Nasr-El-Din, H.A., Hydrophobically Associating Polymers for Oil Field Applications, Canadian Int. Petroleum Conf., PETSOC-2007-016, Calgary, Alberta, Canadian, June 12-14, 2007. DOI: 10.2118/2007-016.

  29. Wang, D., Han, P., Shao, Z., et al., Sweep-Improvement Options for the Daqing Oil Field, SPERes. Eval. Eng., vol. 11, no. 1, pp. 18-26, 2008.

  30. Wang, D., Xia, H., Liu, Z., and Yang, Q., Study of the Mechanism of Polymer Solution with Viscoelastic Behavior Increasing Microscopic Oil Displacement Efficiency and the Forming of Steady "Oil Thread" Flow Channels, SPE Asia Pacific Oil and Gas Conf. and Exhibition, Jakarta, Indonesia, April 17-19, 2001.

  31. Wang, D., Xia, H., Yang, S., and Wang, G., The Influence of Visco-Elasticity on Micro Forces and Displacement Efficiency in Pores, Cores and in the Field, SPE EOR Conf. at Oil and Gas West Asia, Muscat, Oman, April 11-13,2010a.

  32. Wang, L., Zhang, G.C., Ge, J.-J., Li, G., Zhang, J.-Q., and Ding, B., Preparation of Microgel Nanospheres and Their Application in EOR, Int. Oil and Gas Conf. and Exhibition in China, Beijing, China, June 8-10, 2010b.

  33. Wu, Y., Mahmoudkhani, A., and Watson, P., Development of New Polymers with Better Performance under Conditions of High Temperature and High Salinity, SPE EOR Conf. at Oil and Gas West Asia, SPE-155653-MS, Muscat, Oman, April 16-18,2012. DOI: 10.2118/155653-MS.

  34. Xia, H., Wang, D., Wu, J., and Kong, F., Elasticity of HPAM Solutions Increases Displacement Efficiency under Mixed Wettability Conditions, SPE Asia Pacific Oil and Gas Conf. and Exhibition, Perth, Australia, October 18-20, 2004.

  35. Xie, K., Lu, X., Li, Q., Jiang, W., and Yu, Q., Analysis of Reservoir Applicability of Hydrophobically Associating Polymer, SPE J., vol. 21, no. 1,pp. 1-9,2016.

  36. Xu, C., Liu, H., Qian, G., and Qin, J., Microcosmic Mechanisms of Water-Oil Displacement in Conglomerate Reservoirs in Karamay Oilfield, NW China, Petrol. Explor. Develop, vol. 38, no. 6, pp. 725-732,2011.

  37. Xu, X. and Davis, L., The Relation of Pore Size to NMR T2 Diffusional Relaxation in Porous Media, SPE Annual Technical Conf. and Exhibition, Houston, TX, October 3-6, 1999.

  38. Yin, H., Wang, D., and Zhong, H., Study on Flow Behaviors of Viscoelastic Polymer Solution in Micropore with Dead End, SPE Annual Technical Conf. and Exhibition, San Antonio, TX, September 24-27, 2006.

  39. Zallaghi, M., Kharrat, R., Hashemi, A., Improving the Microscopic Sweep Efficiency of Water Flooding Using Silica Nanoparticles, J. Petrol. Explor. Product. Technol., vol. 8, no. 1, pp. 259-269, 2017.


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