Experimental Investigation of the Presence of Anhydrite on the Effectiveness of Low Salinity Water Injection in a Carbonate Reservoir

Document Type : Research Paper

Authors

1 Department of energy economics and management, Tehran Faculty of Petroleum, Petroleum University of Technology, Tehran, Iran

2 Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran shahab@sharif.ir

Abstract

Low salinity water injection (LSWI) is an emerging and effective enhanced oil recovery (EOR) technique because of its recovery performance, low cost, and environmentally friendly compared to other EOR approaches. However, low salinity water effects and their governing mechanisms in carbonates were not fully understood. According to the literature, the present of anhydrite mineral can play a positive role in low salinity in carbonates. In this study, to investigate the present of anhydrite mineral, the wettability alteration was measured in a wide range of salinity by flotation technique. The flotation results show that the wettability modified toward a more water-wet state by decreasing salinity and in-active ions.  Rock wettability was slightly altered by deionized water that could be due to dissolution of anhydrite that provide SO4-2 ions consequently electrical charge reduction of the rock surface. It was then aimed to examine the effectiveness of the low salinity brines in core flood experiments. The results of core flooding experiments indicated that 25 times diluted sea water extracted 4.9 % extra oil production in tertiary mode following by formation water, sea water, and 10 times diluted sea water. This brine in secondary mode produced 2.3 % of OOIP more than sequentially injection of brines. Based chemical element analysis using ICP-OES method, multi-component ion exchange and mineral dissolution are responsible for wettability alteration to more water-wet.
 

Keywords

References

[1]. Terry R.E (2001) Enhanced oil recovery, Encyclopedia of Physical Science and Technology, 18: 503-518. ##
[2]. Jadhunandan P.P (1990) Effects of brine composition, crude oil, and aging conditions on wettability and oil recovery, Department of Petroleum Engineering, New Mexico Institute of Mining and Technology, the USA. ##
[3]. Reiter P.K (1961) A water-sensitive sandstone flood using low salinity water, University of Oklahoma:126-184. ##
[4]. Tang G.Q. and Morrow N.R (1999) Influence of brine composition and fines migration on crude oil/brine/rock interactions and oil recovery, Journal of Petroleum Science and Engineering, 24(2-4): 99-111. ##
[5]. Yildiz H.O and Morrow N.R (1996) Effect of brine composition on recovery of Moutray crude oil by waterflooding, Journal of Petroleum science and Engineering, 14(3-4): 159-168. ##
[6]. Ashraf A, Hadia N. J, Torsaeter O, and Tweheyo M. T (2010) Laboratory investigation of low salinity waterflooding as secondary recovery process: effect of wettability, SPE Oil and Gas India Conference and Exhibition, Society of Petroleum Engineers, India,124-133. ##
[7]. Gupta R, Smith G. G, Hu L, Willingham T, Lo Cascio M, Shyeh J. J, and Harris C. R. (2011) Enhanced waterflood for carbonate reservoirs-impact of injection water composition, SPE Middle East oil and gas show and conference, Society of Petroleum Engineers, Bahrain, 78-85. ##
[8]. Ligthelm D. J, Gronsveld J, Hofman J, Brussee N, Marcelis F, and van der Linde H (2009) Novel waterflooding strategy by manipulation of injection brine composition, EUROPEC/EAGE conference and exhibition, Society of Petroleum Engineers the Netherlands, 145-156. ##
[9]. Nasralla R. A, Sergienko E, Masalmeh S. K, van der Linde H. A, Brussee N. J, Mahani H,and Al-Qarshubi I.S (2016) Potential of low-salinity waterflood to improve oil recovery in carbonates: Demonstrating the effect by qualitative coreflood. SPE Journal, 21(05): 1,643-1,654. ##
[10]. Soraya B, Malick C, Philippe C, Bertin H. J, and Hamon G (2009) Oil recovery by low- salinity brine injection: laboratory results on outcrop and reservoir cores, SPE Annual Technical Conference and Exhibition, Society of Petroleum Engineers, the USA, 124-135. ##
[11]. Webb K, Black C.A and Al-Ajeel H (2004) Low salinity oil recovery-log-inject-log, SPE/DOE Symposium on Improved Oil Recovery, the USA, 78-90. ##
[12]. Austad T, Strand S, and Puntervold T (2009) Is wettability alteration of carbonates by seawater caused by rock dissolution, International Symposium of the Society of Core Analysts held in Noordwijk, The Netherlands, 165-174. ##
[13]. Chandrasekhar S. and Mohanty K (2013) Wettability alteration with brine composition in high temperature carbonate reservoirs, SPE Annual Technical Conference and Exhibition, 65-74. ##
[14]. Nasralla R. A, Mahani H, van der Linde H. A, Marcelis F. H, Masalmeh S. K, Sergienko E and Basu S (2018) Low salinity waterflooding for a carbonate reservoir: Experimental evaluation and numerical interpretation, Journal of Petroleum Science and Engineering 164: 640-654. ##
[15]. Strand S, Standnes D, and Austad T (2006) New wettability test for chalk based on chromatographic separation of SCN^-and SO_4^(2-). Journal of Petroleum Science and Engineering, 52(1-4): 187-197. ##
[16]. Zhang P and Austad T (2006) Wettability and oil recovery from carbonates: Effects of temperature and potential determining ions, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 279(1-3): 179-187. ##
[17]. Yousef A , Al-Saleh S, Al-Kaabi A, and Al-Jawfi M (2010) Laboratory investigation of novel oil recovery method for carbonate reservoirs, Canadian Unconventional Resources and International Petroleum, Society of Petroleum Engineers, Canada, 98-109. ##
[18]. Yousef A.A, Al-Salehsalah S.H, and Al-Jawfi M.S, (2011) New recovery method for carbonate reservoirs through tuning the injection water salinity: Smart waterflooding, SPE EUROPEC/EAGE Annual Conference and Exhibition, Society of Petroleum Engineers, Austria, 156-168. ##
[19]. Zahid A, Shapiro A A, Skauge A (2012) Experimental studies of low salinity water flooding carbonate: A new promising approach, SPE EOR Conference at Oil and Gas West Asia Society of Petroleum Engineers, Oman, 89-97. ##
[20]. Fathi S J, Austad T, Strand S (2010) Smart water, as a wettability modifier in chalk: the effect of salinity and ionic composition, Energy and Fuels, 24, 4: 2514-2519. ##
[21]. Zhang P, Tweheyo M T, Austad T (2006) Wettability alteration and improved oil recovery in chalk: The effect of calcium in the presence of sulfate, Energy and Fuels, 20, 5: 2056-2062. ##
[22]. Strand S, Høgnesen E J, Austad T (2006) Wettability alteration of carbonates—Effects of potential determining ions (Ca+2 and SO4-2) and temperature, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 275, 1-3: 1-10. ##
[23]. Agbalaka C C, Dandekar A Y, Patil S L, Khataniar S, Hemsath J (2008) The effect of wettability on oil recovery: A review, SPE Asia Pacific Oil and Gas Conference and Exhibition Society of Petroleum Engineers, Australia, 55-69. ##
[24]. Strand S, Austad T, Puntervold T, Høgnesen E J, Olsen M, Barstad S M F (2008) Smart water for oil recovery from fractured limestone: a preliminary study, Energy and Fuels, 22, 5: 3126-3133. ##
[25]. Hiorth A, Cathles L, Madland M (2010) The impact of pore water chemistry on carbonate surface charge and oil wettability, Transport in Porous Media, 85, 1: 1-21. ##
[26]. Pu H, Xie X, Yin P, Morrow N R (2010) Low salinity waterflooding and mineral dissolution, SPE Annual Technical Conference and Exhibition, Italy, 125-136. ##
[27]. Al-Shalabi E W, Sepehrnoori K, Pope G, Mohanty K (2014) A fundamental model for predicting oil recovery due to low salinity water injection in carbonate rocks, SPE Energy Resources Conference, Society of Petroleum Engineers, Spain, 178-189. ##
[28]. Mahani H, Menezes R, Berg S, Fadili A, Nasralla R, Voskov D, Joekar-Niasar V (2017) Insights into the impact of temperature on the wettability alteration by low salinity in carbonate rocks, Energy and Fuels, 31, 8: 7839-7853. ##
[29]. Lebedeva E, Senden T J, Knackstedt M, Morrow N (2009) Improved oil recovery from Tensleep sandstone–studies of brine-rock interactions by micro-CT and AFM, 15th European Symposium on Improved Oil Recovery, European Association of Geoscientists and Engineers, The netherland, 55-69. ##
[30]. Shariatpanahi F, Strand S, Austad T (2011) Initial wetting properties of carbonate oil reservoirs: effect of the temperature and presence of sulfate in formation water, Energy and Fuels, 25, 7. 3021-3028. ##
[31]. Austad T, Shariatpanahi F, Strand S, Aksulu H, Puntervold T (2015) Low salinity EOR effects in limestone reservoir cores containing anhydrite: a discussion of the chemical mechanism, Energy and Fuels, 29, 11: 6903-6911. ##
[32]. AlQuraishi A A, AlHussinan S N, AlYami H Q (2015) Efficiency and recovery mechanisms of low salinity water flooding in sandstone and carbonate reservoirs, Offshore Mediterranean Conference and Exhibition, Offshore Mediterranean Conference. ##
[33]. Austad T, Shariatpanahi F, Strand S, Black C J J, Webb K J (2012) Conditions for a low-salinity enhanced oil recovery (EOR) effect in carbonate oil reservoirs, Energy and Fuels, 26, 1: 569-575. ##
[34]. Yousef A A, Al-Saleh S, Al-Kaabi A, Al-Jawfi M (2011) Laboratory investigation of the impact of injection-water salinity and ionic content on oil recovery from carbonate reservoirs, SPE Reservoir Evaluation and Engineering, 14, 05: 578-593. ##
[35]. Al-Shalabi E W, Sepehrnoori K (2016) A comprehensive review of low salinity/engineered water injections and their applications in sandstone and carbonate rocks, Journal of Petroleum Science and Engineering, 139: 137-161. ##
[36]. Uetani T, Kaido H, Yonebayashi H (2019) Investigation of Anhydrite Dissolution as a Potential Low Salinity Waterflooding Mechanism Using Carbonate Reservoir Rocks, International Petroleum Technology Conference, China, 112-123. ##
[37]. Dubey S, Doe P (1993) Base number and wetting properties of crude oils. SPE Reservoir Engineering, 8, 03: 195-200. ##
[38]. Wu Y, Shuler P J, Blanco M, Tang Y, Goddard W A (2006) A study of wetting behavior and surfactant EOR in carbonates with model compounds, SPE/DOE Symposium on Improved Oil Recovery, Society of Petroleum Engineers, The USA, 178-189. ##
[39]. Mwangi P, Brady P V, Radonjic M, Thyne G (2018) The effect of organic acids on wettability of sandstone and carbonate rocks, Journal of Petroleum Science and Engineering, 165: 428-435. ##
Journal of Petroleum Research
Volume 31, Issue 119 - Serial Number 119
November and December 2021
Pages 15-27

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