بررسی آزمایشگاهی تزریق پلیمر بر ازدیاد برداشت از مخازن نفت سنگین و تعیین غلظت بهینه تزریق

نوع مقاله: مقاله پژوهشی

نویسندگان

دانشکده نفت اهواز، دانشگاه صنعت نفت، اهواز، ایران

10.22078/pr.2019.3503.2602

چکیده

استفاده از پلیمرها جهت کنترل تحرک‌پذیری آب تزریقی و ازدیاد برداشت از مخازن نفتی از سال‌ها پیش مورد استفاده قرار می‌گیرد. سیلاب‌زنی پلیمر موجب بهبود بازده جاروبی حجمی، کاهش پدیده انگشتی شده و ایجاد کانال و تاخیر در زمان میان‌شکنی آب می‌شود. مجموعه این فرآیندها موجب افزایش تولید نفت و کاهش هزینه‌های تولیدی خواهد شد. جهت انجام این فرآیند، پلیمرهای مختلف به تنهایی یا همراه با سورفکتانت و آلکالین‌ها مورد استفاده قرار می‌گیرند. در این پژوهش از یک نوع پلیمر جدید به‌نام FLOPPAM 3630 جهت بررسی ازدیاد برداشت مخازن نفت بسیار سنگین استفاده شده است. بدین منظور 6 محلول پلیمری با غلظت‌های مختلف ساخته شده و آزمایش‌های پایداری نسبت به نرخ برشی، زمان و دما برروی آنها انجام شد. نتایج پایداری پلیمر بیانگر پایداری آن در شرایط مختلف نرخ برشی، دما و همچنین گذشت زمان است. در نتیجه این پلیمر کاندیدای مناسبی جهت انجام آزمایش‌های سیلاب‌زنی در شرایط دمایی مخزن است. سپس 3 محلول پلیمری مناسب‌تر انتخاب شده و سیلاب‌زنی پلیمر انجام شد. نتایج نشان داد که محلول با غلظت ppm 1000 بهترین بازدهی را با حدود 40% دارد. علت بازدهی مناسب این غلظت جاروب سطحی و عمودی بیشتر آن نسبت به سایر غلظت‌ها است. همچنین به‌دلیل اختلاف بازدهی کم بین 1000 و ppm 2000 بهتر است به‌دلیل صرفه اقتصادی بیشتر و تزریق‌پذیری راحت‌تر آن از غلظت کمتر استفاده شود. همچنین بازدهی نفت این نوع پلیمر در بستر شنی به نسبت پلیمرهای دیگر با این شرایط آزمایش بیشتر است که استفاده از آن را اقتصادی‌تر جلوه می‌دهد.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of Membrane Distillation Process as a Tertiary Wastewater Treatment of Bandar Abbas Oil Refinery for Reuse in Industry

نویسندگان [English]

  • Pourya Malmir
  • Abdolnabi Hashemi
  • Bahram Soltani Solgani
Petroleum University of Technology, Ahwaz Faculty of Petroleum Engineering, Iran
چکیده [English]

In this research, an air gap membrane distillation (AGMD) pilot was used for the tertiary treatment of effluent from Bandar Abbas oil refinery’s wastewater treatment unit. The commercial type membranes used in this system were with two different pore sizes 0.22 and 0.45µm, made of PTFE material with PP support. The cold flow was kept constant at 20 °C, and the effect of some process factors on the amount of produced water flux such as feed temperature (hot flow), air gap, concentration of wastewater, and membrane pore size were studied as Feed temperatures were equal to 40,50,60,70 and 80 °C, air gaps were equal to 6 and 12 mm, feed concentrations were equal to 780,2100,3250,4400 and 5200 μs/cm.  Also, the reduction of the amount of flux due to probable membrane fouling was investigated. Maximum produced flux was 16.44 kg/(m2.h) which was obtained using a 0.45 micron membrane, 6 mm air gap, and feed temperature of 80 °C. Increasing the air gap from 6 to 12 mm decreased the flux about 34%, while reducing the electrical conductivity from 4400 to 780 μs/cm, the amount of flux showed only 28% growth. Also, after about 30 hours of using the membrane without any cleaning system, the flux reduction was observed about 12%. Finally, according to the analysis of final purified water by membrane distillation method, the amount of TDS maximum 7.8 mg/L, COD about 4 mg/L, and chloride less than 8 mg/L have been obtained; in addition,  it has well been illustrated that the effluent of Bandar Abbas refinery’s wastewater plant by using membrane distillation supplementation can be used at all different sections of industry.
 

کلیدواژه‌ها [English]

  • In this research
  • an air gap membrane distillation (AGMD) pilot was used for the tertiary treatment

[1]. Kharat R., Asadollahi M., and Nemani M., “Enhanced Oil Recovery, Nehare Danesh Press, 2009. ##

[2]. Lake L. W., “Enhanced oil recovery,” Englewood Cliffs, New Jersey: Patent Hall, 1989. ##

[3]. Dullien F. A. L., “Porous media: fluid transport and pore structure,” Academic Press, Washington, USA. 1979. ##

[4]. Sorbie K. S. “Polymer-improved oil recovery,” London: Blackie and Son Limited, 1991. ##

[5]. Du Y. and Guan L., “Field-scale polymer flooding: lessons learnt and experiences gained during past 40 years,” SPE 91787, International Petroleum Conference, Puebla, Mexico, 8-9 November 2004. ##

[6]. Needham R. B. and Doe P. H., “Polymer flooding review,” J. Pet.Tech., Vol. 39, No. 12, pp.1503-1507, 1987. ##

[7]. Seright R. S., D. Wang, N. Lerner, A. Nguyen, J. Sabid, and R. Tochor. “Can 25-cp polymer solution efficiently displace 1,600-cp oil during polymer flooding?,” SPE Journal, Vol. 23, Issue 06, December 2018. ##

[8]. Kumar M., Hoang V., Satik C. and Rojas D., “High-mobility-raio waterflood performance prediction: challenges and new insights,” SPERE, Vol. 11, No. 1, pp. 186-196, 2008. ##

[9]. Craft B. C., Hawkins M. F. and Terry R. E., “Applied petroleum reservoir engineering,” 2nd Englewood Cliffs, N. J: Prentice Hall PTR 4-6., pp. 376-384, 1991. ##

[10]. Neil J. D., Chang H. L. and Geffen T. M., “Waterflooding and improved waterflooding in improved oil recovery,” Oklahoma City, Interstate Oil Compact Commission, pp. 1-52, 1983. ##

[11]. Taber J. J., Martin F.  D. and Seright R. S., “EOR screening criteria revisited – Part 1: introduction to screening criteria and enhanced recovery field projects,” SPERE, Vol. 12, No. 3, pp. 189-198, 1997. ##

[12]. Taber J. J., Martin F. D. and Seright R. S., “EOR screening criteria revisited – Part 2: applications and impact of oil prices,” SPERE, Vol. 12, No. 3, August 1997. ##

[13]. Al-Bahar M. A., Merrill R., Peake W., Jumaa M. and Oskui R., “Evaluation of IOR potential within Kuwait”, Paper SPE 88716 presented at the Abu Dhabi International Conference and Exhibition, Abu Dhabi, 10–13 October 2004. ##

[14]. Dickson J. L., Leahy-Dios A. and Wylie P. L., “Development of improved hydrocarbon recovery screening methodologies,” Paper SPE 129768 presented at the SPE Improved Oil Recovery Symposium, Tulsa, 24–28 April 2010. ##

[15]. Shupe R. D., “Chemical stability of polyacrylamide polymers,” J. Pet. Tech., Vol. 33, No. 8, pp. 1513-1529, 1981. ##

[16]. Akstinat M. H., “Polymers for enhanced oil recovery in reservoirs of extremely high salinities and high temperatures,” SPE 8979, Fifth International Symposium on Oilfield and Geothermal Chemistry, Stanford, CA, 28-30 May 1980. ##

[17]. Davison P. and Mentzer E., “Polymer flooding in North Sea reservoirs,” SPE 9300, 55th Annual Fall Conference, Dallas, TX, 21-24 September 1980. ##

[18]. Manrique E. J., Muci V. E. and Gurfinkel M. E., “EOR field experiences in carbonate reservoirs in the United States,” SPEREE, Vol. 10, Issue 6, pp. 667–686, December 2007. ##

[19]. Gao C H. “Advances of polymer flood in heavy oil recovery,” SPE heavy oil conference and exhibition held in Kuwait, 12-14 December 2011. ##

[20]. Wassmuth F., Green K., Hodgins L. and Turta A., “Polymer flood technology for heavy oil recovery,” Paper 2007-182 Presented at the Canadian International Petroleum Conference, Calgary Canada, June 2007.  ##

[21]. Wang J. and Dong M., “A laboratory study of polymer flooding for improving heavy oil recovery,” Paper 2007-178 Presented at the Canadian International Petroleum Conference, Calgary Canada, June 2007. ##

[22]. Corredor Laura M., Maen M. Husein and Brij B. Maini., “Effect of hydrophobic and hydrophilic metal oxide nanoparticles on the performance of xanthan gum solutions for heavy oil recovery,” Nanomaterials, Vol. 9, No. 1, p. 94, 2019.  ##

[23]. Silveira B. M. O., Lopes L. F. and Moreno R. B. Z. L., “Polymer flooding in a high salinity heavy-oil reservoir,” Brazilian Journal of Petroleum and Gas, Vol. 12, No. 1, pp. 35-51, 2018. ##

[24]. Rajiv D., Soroush M., Alexander D., Shahkarami A. R. and Boodlal D., “Polymer flooding application in trinidad heavy oil reservoirs,” In SPE Trinidad and Tobago Section Energy Resources Conference, Society of Petroleum Engineers, 2018. ##

[25]. Esther V., M. Van Haasterecht J. T., Masalmeh S. K., Faber M. J., Boersma D. M. and Gruenefelder M. A., “Pushing the envelope for polymer flooding towards high-temperature and high-salinity reservoirs with polyacrylamide based ter-polymers,” In SPE Middle East Oil and Gas Show and Conference, Society of Petroleum Engineers, September, Manama, Bahrain, 2011. ##