Case History of Dehydration-Technology Improvement for HCPF Production in the Daqing Oil Field
- Zhihua Wang (Northeast Petroleum University) | Xinyu Lin (Northeast Petroleum University) | Tianyu Yu (University of Western Australia) | Zhiwei Hu (Daqing Oilfield Company Limited) | Mengmeng Xu (Northeast Petroleum University) | Hongtao Yu (Northeast Petroleum University)
- Document ID
- Society of Petroleum Engineers
- Oil and Gas Facilities
- Publication Date
- December 2016
- Document Type
- Journal Paper
- 2016.Society of Petroleum Engineers
- Emulsification, Daqing Oilfield, Oil/water separation, High concentraction polymer flooding, Produced emulsion
- 3 in the last 30 days
- 369 since 2007
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High-concentration polymer flooding (HCPF) is an enhanced-oil-recovery (EOR) method that has been used since conventional polymer flooding was applied in the main reservoirs of the Daqing oil field because its higher viscoelasticity can improve the oil-displacement efficiency. However, as a result of more produced hydrolyzed polyacrylamide (HPAM), the oil/water mixture is emulsified easily and separated with more difficulty.
In this work, a case history of dehydration technology for HCPF production in the Daqing oil field is reviewed, and a laboratory investigation to assess the emulsification behaviors of HCPF-produced emulsions is conducted. Besides the dehydration-mechanism description of a high-voltage pulsed electrical field, electrostatic-demulsification performance for produced liquid from HCPF production is improved, and the operation parameters are optimized. Recent actual acceptance of the optimization recommendations is presented, and the field-application results are also discussed. The results indicate that dehydration technology for the Daqing oil field has been innovated with the industrialization of the EOR process. Traditional methods of gravity or centrifugal settling are replaced; this upgraded freewater knockout (FWKO) has the functions of adsorption, wetting, collision and coalescence, and oil pretreating for HCPF production. Because it is dominated by periodic vibration as its main mechanism, the pulsed-direct-current (DC) electrostatic-demulsification technique has some advantages in overcoming the obstacles encountered by regular types of electrical-field dehydration processes at strong emulsification stability. Compared with previous dehydration processes having complex alternating-current (AC)/DC electrical fields, the process with a pulsed-DC electrical field shows a unique advantage in terms of emulsified water-separation efficiency, energy conservation, environmental protection, lower labor intensity, and more-stable operation, and the dehydration performance meets the oil-treating standards.
As the surface-matching technology of EOR, this improvement in dehydration technology is significant for promoting the construction of an HCPF demonstration project and accelerating petroleum development and production efficiently.
|File Size||2 MB||Number of Pages||11|
ASTM D4440-15, Standard Test Method for Plastics: Dynamic Mechanical Properties Melt Rheology. 2015. West Conshohocken, Pennsylvania: ASTM International. http://dx.doi.org/10.1520/D4440-15.
Chiesa, M. 2008. Toward Compact Separation of Crude Oil. World Oil 229 (4): 38.
Denney, D. 2009. Effect of Elasticity on Displacement Efficiency: High-Concentration-Polymer Flooding. J Pet Technol 61 (1): 50–51. SPE-0109-0050-JPT. http://dx.doi.org/10.2118/0109-0050-JPT.
Eow, J. S. and Ghadiri, M. 2002. Electrostatic Enhancement of Coalescence of Water Droplets in Oil: A Review of the Technology. Chemical Engineering Journal 85 (2–3): 357–368. http://dx.doi.org/10.1016/S1385-8947(01)00250-9.
Eow, J. S. and Ghadiri, M. 2003. Motion, Deformation and Break-up of Aqueous Drops in Oils Under High Electric Field Strengths. Chemical Engineering and Processing: Process Intensification 42 (4): 259–272. http://dx.doi.org/10.1016/S0255-2701(02)00036-3.
Figueroa-Johnson, M. A., Tindall, J. A., and Friedel, M. 2007. A Comparison of 18Oδ Composition of Water Extracted From Suction Lysimeters, Centrifugation, and Azeotropic Distillation. Water, Air, and Soil Pollution 184 (1): 63–75. http://dx.doi.org/10.1007/s11270-007-9399-8.
Gong, H. F. and Peng, Y. 2013. Effect of Oil Viscidity on Optimal Demulsion Frequency in Pulse Electric Field. Acta Petrolei Sinica (Petroleum Processing Section) 29 (1): 168–173. http://www.syxbsyjg.com/EN/10.3969/j.issn.1001-8719.2013.01.027.
Gong, H. F., Peng, Y., Shang, H .H. et al. 2015. Non-Linear Vibration of A Water Drop Subjected to High-Voltage Pulsed Electric Field in Oil: Estimation of Stretching Deformation and Resonance Frequency. Chemical Engineering Science 128: 21–27. http://dx.doi.org/10.1016/j.ces.2015.01.063.
Gong, H. F., Tu, Y. Q., Shi, Y. G. et al. 2009. Calculation of Force Acting on Flexing and Deforming Latex Particle in Oil. Journal of Chemical Industry and Engineering Society of China 60 (9): 2191–2196.
Grutters, M., van Dijk, M., Dubey, S. et al. 2007. Asphaltene Induced W/O Emusilon: False or True? Journal of Dispersion Science and Technology 28 (3): 357–360. http://dx.doi.org/10.1080/01932690601107658.
ISO 6721-10, Plastics—Determination of Dynamic Mechanical Properties, Part 10: Complex Shear Viscosity Using a Parallel-Plate Oscillatory Rheometer. 2015. Geneva, Switzerland: Internation Organization for Standardization.
Jin, L. and Wojtanowicz, A. K. 2013. Experimental and Theoretical Study of Counter-Current Oil–Water Separationin in Wells With In-Situ Water Injection. Journal of Petroleum Science and Engineering 109: 250–259. http://dx.doi.org/10.1016/j.petrol.2013.08.037.
Kokal, S. L. 2005. Crude-Oil Emulsions: A State-of-the-Art Review. SPE Prod & Fac 20 (1): 5–13. SPE-77497-PA. http://dx.doi.org/10.2118/77497-PA.
Lee, C. -M., Sams, G. W., and Wagner, J. P. 2001. Power Consumption Measurements for AC and Pulsed DC for Electrostatic Coalescence of Water-in-Oil Emulsions. Journal of Electrostatics 53 (1): 1–24. http://dx.doi.org/10.1016/S0304-3886(01)00029-8.
Liu, J., Zhou, Z., Xu, Z. et al. 2002. Bitumen-Clay Interactions in Aqueous Media Studied by Zeta Potential Distribution Measurement. J Colloid Interface Sci 252 (2): 409–418. http://dx.doi.org/10.1006/jcis.2002.8471.
Liu, Y., Wang, Z. H., Li, X. L. et al. 2014. ASP Flooding Produced Water Management: Evaluation, Disposal and Reuse. Presented at the SPE Middle East Health, Safety, Environment and Sustainable Development Conference and Exhibition, Doha, Qatar, 22–24 September. SPE-170396-MS. http://dx.doi.org/10.2118/170396-MS.
McLean, J. D. and Kilpatrick, P. K. 1997. Effects of Asphaltene Solvency on Stability of Water-in-Crude-Oil Emulsions. Journal of Colloid and Interfaces Science 189 (2): 242–253. http://dx.doi.org/10.1016/jcis.1997.4807.
Mohammed, R. A., Bailey, A. I., Luckham, P. F. et al. 1994. Dewatering of Crude Oil Emulsions 3. Emulsion Resolution by Chemical Means. Colloids and Surfaces A: Physicochemical and Engineering Aspects 83 (3): 261–271. http://dx.doi.org/10.1016/0927-7757(93)02706-K.
Nasiri, H. G., Mosavian, M. T. H., and Kadkhodaee, R. 2013. Demulsification of Gas Oil/Water Emulsion via High-Intensity Ultrasonic Standing Wave. Journal of Dispersion Science and Technology 34 (4): 483–489. http://dx.doi.org/10.1080/01932691.2012.681990.
Ogunsina, O. O. and Wiggins, M. L. 2005. A Review of Downhole Separation Technology. Presented at the SPE Production Operations Symposium, Oklahoma City, Oklahoma, USA, 16–19 April. SPE-94276-MS. http://dx.doi.org/10.2118/94276-MS.
Plasencia, J., Pettersen, B., and Nydal, O. J. 2013. Pipe Flow of Water-in-Crude Oil Emulsions: Effective Viscosity, Inversion Point and Droplet Size Distribution. Journal of Petroleum Science and Engineering 101: 35–43. http://dx.oi.org/10.1016/j.petrol.2012.11.009.
Sun, D., Jong, S. C., Duan, X. D. et al. 1999. Demulsification of Waterin-Oil Emulsion by Wetting Coalescence Materials in Stirred- and Packed-Columns. Colloids and Surfaces A: Physicochemical & Engineering Aspects 150 (1–3): 69–75. http://dx.doi.org/10.1016/S0927-7757(98)00590-1.
Sun, Z. Q., Jin, Y. H., Wang, L. et al. 2012. Impact of High-Frequency Pulse Electric Field Parameters on Polarization and Deformation of Water Droplet. Journal of Chemical Industry and Engineering (China) 63 (10): 3112–3118.
Taylor, K. C., Burke, R. A., Nasr-El-Din, H. A. et al. 1998. Development of a Flow Injection Analysis Method for the Determination of Acrylamide Copolymers in Brines. Journal of Petroleum Science and Engineering 21 (1–2): 129–139. http://dx.doi.org/10.1016/S0920-4105(98)00042-4.
Thomas, S. 2008. Enhanced Oil Recovery - An Overview. Oil and Gas Science and Technology 63 (1): 9–19. http://dx.doi.org/10.2516/ogst:2007060.
Wang, X. and Alvarado, V. 2008. Effect of Salinity and pH on Pickering Emulsion Stability. Presented at the SPE Annual Technical Conference and Exhibition, Denver, 21–24 September. SPE-115941-MS. http://dx.doi.org/10.2118/115941-MS.
Wang, Z., Yu, T., Lin, X. et al. 2016. Chemicals Loss and the Effect on Formation Damage in Reservoirs With ASP Flooding Enhanced Oil Recovery. Journal of Natural Gas Science and Engineering 33: 1381–1389. http://dx.doi.org/10.1016/j.jngse.2016.06.048.
Wu, Y., Mahmoudkhani, A., Watson, P. et al. 2012. Development of New Polymers with Better Performance Under Conditions of High Temperature and High Salinity. Presented at the SPE EOR Conference at Oil and Gas West Asia, Muscat, Oman, 16–18 April. SPE-155653-MS. http://dx.doi.org/10.2118/155653-MS.
Yang, F., Niu, Q., Lan, Q. et al. 2007. Effect of Dispersion pH on the Formation and Stability of Pickering Emulsions Stabilized by Layered Double Hydroxides Particles. Journal of Colloid and Interface Science 306 (2): 285–295. http://dx.doi.org/10.1016/j.jcis.2006.10.062.
Yang, F., Wang, D., Wang, G. et al. 2006a. Study on High-Concentration Polymer Flooding To Further Enhance Oil Recovery. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24–27 September. SPE-101202-MS. http://dx.doi.org/10.2118/101202-MS.
Yang, F., Yang, X., and Li, J. 2006b. Daqing Pilot Shows Effectiveness of High-Concentration Polymer Flooding. Oil & Gas Journal 104 (9): 49–53.
Zhang, J., Dong, S., and Gan, Q. 2007. Dynamic Model of Liquid Droplets of Water-in-Oil Emulsions With High-Frequency Pulsating Electrical Field. Journal of Chemical Industry and Engineering (China) 58 (4): 875–880.
Zhang, R., Winterfeld, P. H., Yin, X. et al. 2015. Sequentially Coupled THMC Model for CO2 Geological Sequestration Into a 2D Heterogeneous Saline Aquifer. Journal of Natural Gas Science and Engineering 27 (2): 579–615. http://dx.oi.org/10.1016/j.jngse.2015.09.013.
Zhu, Y., Hou, Q., Jian, G. et al. 2013. Current Development and Application of Chemical Combination Flooding Technique. Petroleum Exploration and Development 40 (1): 96–103. http://dx.doi.org/10.1016/S1876-3804(13)60009-9.