مطالعه آزمایشگاهی فرآیند آشام در روش ازدیاد برداشت هیبریدی آب کم‎‎شور- ماده فعال‎سطحی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه مهندسی نفت، دانشکده مهندسی شیمی، دانشگاه تربیت مدرس، تهران، ایران

2 گروه مهندسی نفت، دانشکده نفت، دانشگاه صنعت نفت، اهواز، ایران

10.22078/pr.2018.3289.2512

چکیده

بیش از 60% از نفت کشف‌شده دنیا در سنگ‌های کربناته ذخیره شده‌اند. نفت‎دوست بودن اکثر این مخازن، باعث شده است که در بیشتر موارد کارایی سیلاب‎زنی آبی در آن‎ها، بسیار پایین باشد. به‎دلیل تاثیر منفی نیروهای موئینگی، آب تزریقی نمی‎تواند به‌سادگی در ماتریس‎های نفت‌دوست نفوذ کند و نفت را وادار به خروج از ماتریس کند. تغییر ترشوندگی سطح سنگ، در مخازن نفت‎دوست، به‎سمت حالات نسبتاً آب‎دوست، به‎عنوان یکی از روش‎های بهبود بازیافت نفت مطرح شده است. روش‌های گوناگونی برای تغییر ترشوندگی مخازن وجود دارد که از بین آن‎ها می‎توان به استفاده از مواد فعال‎سطحی و آب‎های کم‎شور اشاره کرد. هر دو این روش‌ها در مطالعات گسترده‌ای و به‌طور جداگانه مورد بررسی قرارگرفته‌اند. در این پژوهش به بررسی اثر هیبریدی ماده فعال‎سطحی در محیط‎های کم‎‎شور پرداخته شد. بدین منظور، نمونه‎های نفت و سنگ مخزن از یکی از میادین جنوب ایران تهیه و مشخصات آن‎ها اندازه‎گیری شد. سپس آزمایش‎های آشام آب سازند، آب کم‎‎شور و ماده فعال‎سطحی AOT در حضور آب کم‎‎شور انجام شد. نتایج بهبود ضریب بازیافت نفت در حضور ماده فعال‎سطحی و آب کم‌شور را نشان داد. آشام ماده فعال‎سطحی آنیونی در محیط کم‌شور منجر به‎دست‎یابی به بازیافت 56% از نفت خام C1 و 37% از نفت خام C2 شد.
 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Experimental Investigation of Imbibition Process in a Hybrid Low Salinity- Surfactant EOR Method

نویسندگان [English]

  • Sepideh Veiskarami 1
  • Arezou Jafari 1
  • Abouzar Soleymanzadeh 2
1 Chemical Engineering Faculty, Petroleum Engineering Department, Tarbiat Modares University, Tehran, Iran
2 Petroleum Engineering Department, Petroleum Engineering College, University of Technology, Ahwaz, Iran
چکیده [English]

More than 60% of the world’s discovered oil reservoirs are stored in carbonate rocks. In most cases, oil-wetness of these formation has led to low recovery factor in the water-flooding process. Due to the negative effect of capillary forces, injected water cannot easily penetrate the oil-wet matrices and push oil to leave the matrix. Wettability alteration of the rock in relatively oil-wet formations has been considered as an approach to improve oil recovery. There are various methods for changing the wettability of reservoirs, among them, surfactants and low salinity waters are mentioned. Both of these methods have been studied in a wide variety of separate studies. In this study, the effect of hybrid low salinity surfactant was investigated. For this purpose, samples of oil and reservoir rock were prepared from one of the Iranian south oil reservoirs and their characteristics have been measured. Then, imbibition experiments of formation brine, low salinity water and low salinity water in the presence of AOT surfactants have been done. Results showed an improvement in the oil recovery in the low salinity surfactant formulation. The anionic surfactant in the low salinity environment has resulted in the recovery of 56% of crude oil C1 and 37% of crude oil C2.
 

کلیدواژه‌ها [English]

  • Imbibition Process
  • Wettability Alteration
  • Recovery Factor
  • Surfactants
  • Low salinity
  • Low Salinity-Surfactant Hybrid Method

[1]. Anderson W., “Wettability literature survey–part 1 to part 6,” J. Pet. Technol, Vol. 39, Issue12, pp. 1125-1144, 1987.##

[2]. Donaldson E. C. and Alam W., “Wettability”, Elsevier, 2013. ##

[3]. Wang Y., Xu H., Yu W., Bai B., Song X. and Zhang J., “Surfactant induced reservoir wettability alteration: Recent theoretical and experimental advances in enhanced oil recovery,” Petroleum Science, Vol. 8, No. 4, p. 463-476, 2011.##

[4]. Buckley J., Y. Liu and Monsterleet S., “Mechanisms of wetting alteration by crude oils,” SPE Journal, Vol. 3 No. 01, pp. 54-61, 1998. ##

[5]. Kumar K., Dao E. K. and Mohanty K. K., “Atomic force microscopy study of wettability alteration by surfactants,” SPE Journal, Vol. 13, No. 02, pp. 137-145, 2008. ##

[6]. Standnes D. C. and Austad T., “Wettability alteration in carbonates: Interaction between cationic surfactant and carboxylates as a key factor in wettability alteration from oil-wet to water-wet conditions,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 216, No. 1, pp. 243-259, 2003.##

[7]. Mirzaei‐Paiaman A. and Masihi M., “Scaling of recovery by cocurrent spontaneous imbibition in fractured petroleum reservoirs,” Energy Technology, Vol. 2(2): pp. 166-175, 2014. ##

[8]. Mirzaei-Paiaman A., Masihi M. and Standnes D. C., “Index for characterizing wettability of reservoir rocks based on spontaneous imbibition recovery data,” Energy & Fuels, Vol 27, No. 12, pp. 7360-7368, 2013.##

[9]. Ghaedi M. and Masihi M., “An efficient method for determining capillary pressure and relative permeability curves from spontaneous imbibition data,” Iranian Journal of Oil & Gas Science and Technology, Vol. 4, No. 3, pp. 1-17, 2015.##

[10]. Wu Y., Shuler P. J., Blanco M., Tang Y. and Goddard W. A., “An experimental study of wetting behavior and surfactant EOR in carbonates with model compounds,” SPE Journal, Vol. 13, No. 01, pp. 26-34, 2008.##

[11]. Thomas M. M., Clouse J. A. and Longo J. M., “Adsorption of organic compounds on carbonate minerals: 1. Model compounds and their influence on mineral wettability,” Chemical Geology, Vol. 109, No. 1-4, pp. 201-213, 1993.##

[12]. Zhang P. and T. Austad., “The relative effects of acid number and temperature on chalk wettability,” in SPE International Symposium on Oilfield Chemistry, Society of Petroleum Engineers, 2005.##

[13]. Hamidpour E., Mirzaei-Paiaman A., Masihi M. and Harimi B., “Experimental study of some important factors on nonwetting phase recovery by cocurrent spontaneous imbibition,” Journal of Natural Gas Science and Engineering, Vol. 27, pp. 1213-1228, 2015. ##

[14]. Alagic E. and Skauge A., “Combined low salinity brine injection and surfactant flooding in mixed− wet sandstone cores,” Energy & Fuels, Vol. 24, No. 6, pp. 3551-3559, 2010.##

[15]. Alagic E., Spildo K., Skauge A. and Solbakken J., “Effect of crude oil ageing on low salinity and low salinity surfactant flooding,” Journal of Petroleum science and Engineering, Vol. 78, No. 2, pp. 220-227, 2011.##

[16]. Johannessen A. M. and Spildo K., “Can lowering the injection brine salinity further increase oil recovery by surfactant injection under otherwise similar conditions?,” Energy & Fuels, Vol. 28, No. 11, pp. 6723-6734, 2014.##

[17]. Khanamiri H. H., O. Torsæter and Stensen J. Å., “Experimental study of low salinity and optimal salinity surfactant injection,” in EUROPEC, Society of Petroleum Engineers, 2015. ##

[18]. Johannessen A. M. and Spildo K., “Enhanced oil recovery (EOR) by combining surfactant with low salinity injection,” Energy & Fuels, Vol. 27, No. 10, pp. 5738-5749, 2013.##

[19]. Spildo K., Sun L., Djurhuus K. and Skauge A., “A strategy for low cost, effective surfactant injection,” Journal of Petroleum Science and Engineering, Vol. 117, pp. 8-14, 2014. ##

[20]. Tichelkamp, T., Teigen E., Nourani M. and Øye G., “Systematic study of the effect of electrolyte composition on interfacial tensions between surfactant solutions and crude oils,” Chemical Engineering Science, Vol. 132, pp. 244-249, 2015. ##

[21]. Tichelkamp T., Vu Y., Nourani M. and Øye G., “Interfacial tension between low salinity solutions of sulfonate surfactants and crude and model oils,” Energy & Fuels, Vol. 28, No. 4, pp. 2408-2414, 2014.##

[22]. Nourani M. and Gaweł B., “Method for determining the amount of crude oil desorbed from silica and aluminosilica surfaces upon exposure to combined low-salinity water and surfactant solutions,” Energy & Fuels, Vol. 28, No. 3, pp. 1884-1889, 2014.##

[23]. Khanamiri H. H., Nourani M., Tichelkamp Th. and Torsæter O., “Low salinity surfactant EOR with a new surfactant blend: effect of calcium cations,” Energy & Fuels, Vol. 30, No. 2, pp. 984–991 January 2016. ##

[24]. Clark J., “Joint committee on powder diffraction standards,” JCPDS. Card, 1961. ##

[25]. RP40 A., “Recommended practices for core analysis,” Feb, 1998. ##

[26]. Austad T., Matre B., Milter J., Sævareid A. and Øyno L., “Chemical flooding of oil reservoirs 8. Spontaneous oil expulsion from oil-and water-wet low permeable chalk material by imbibition of aqueous surfactant solutions,” Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 137, Vol. 1, pp. 117-129, 1998.##

[27]. Karambeigi M. S., Nasiri M., Haghighi Asl A. and Emadi M. A., “Enhanced oil recovery in high temperature carbonates using microemulsions formulated with a new hydrophobic component,” Journal of Industrial and Engineering Chemistry, Vol. 39, pp. 136-148, 2016.##

[28]. Schechter D., Zhou D. and Orr F., “Low IFT drainage and imbibition,” Journal of Petroleum Science and Engineering, Vol. 11, No. 4, pp. 283-300, 1994.##