A Procedure for Measuring Contact Angles When Surfactants Reduce the Interfacial Tension and Cause Oil Droplets to Spread
- Oladapo O. Adejare (Texas A&M University) | Ramez A. Nasralla (Texas A&M University) | Hisham A. Nasr-El-Din (Texas A&M University)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- August 2014
- Document Type
- Journal Paper
- 365 - 372
- 2014.Society of Petroleum Engineers
- 2.5.2 Fracturing Materials (Fluids, Proppant), 3.2.4 Acidising, 1.10 Drilling Equipment
- wettability, VES, contact angle, chemical treatments, surfactants
- 4 in the last 30 days
- 506 since 2007
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Viscoelastic surfactants (VESs) are used as diverting agents in carbonate matrix acidizing. However, these surfactants can adversely affect the wettability around the wellbore. Receding contact angles were measured with the conventional method to study the effect of spent-acid solutions with an amphoteric amine-oxide VES and the mutual solvent ethylene glycol monobutyl ether (EGMBE) on the wettability of Austin cream chalk rocks. The conventional method involves the injection of oil droplets into the surfactant solution. However, contact angles could not be measured when oil droplets were injected into spentacid solutions with VES and EGMBE, because low oil/acid interfacial tensions (IFTs) cause them to spread on the rock surface. A new procedure was used for these contact-angle measurements. Rocks were centrifuged in spent-acid solutions with VES and EGMBE, so that the surfactant changed the interfacial properties of the rock. Then, contact angles were measured in spent acid with hydrochloric acid (HCl) only, to prevent VES and EGMBE from reducing the oil/acid IFT. The effect of the surfactants in the spent acid on the acid/rock and acid/oil IFT, which is the wettability, is shown by the difference in contact angles before and after centrifuging. With the new procedure, a spent-acid solution with HCl, 1 vol% of VES, and 10 vol% of EGMBE made an oil-wet rock water-wet and a water-wet rock strongly water-wet at 25°C. This suggests that an EGMBE post-flush enhances the relative permeability to oil, under the parameters investigated. Contact angles are a function of the oil/rock, acid/rock, and oil/acid IFTs. However, the wettability of the rock is a function of the oil/rock and acid/rock IFT only. The new procedure measures contact angles in such a way that the surface-active agents change the oil/rock and acid/rock IFT only so that "spreading," an artifact caused by oil/acid IFT reduction, may not occur.
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Adejare, O.O., Nasralla, R.A., and Nasr-El-Din, H.A. 2012. The Effect of Viscoelastic Surfactants and a Mutual Solvent on the Wettability of a Carbonate Rock. Presented at the SPE International Production and Operations Conference and Exhibition, Doha, Qatar, 14–16 May. SPE-157323-MS. http://dx.doi.org/10.2118/157323-MS.
Alotaibi, M.B., Nasralla, R.A., and Nasr-El-Din, H.A. 2011. Wettability Studies Using Low-Salinity Water in Sandstone Reservoirs. SPE Res Eval & Eng 14 (12): 713–725. SPE-149942-PA. http://dx.doi.org/10.2118/149942-PA.
Anderson, W. 1986. Wettability Literature Survey—Part 2: Wettability Measurement. J Pet Technol 38 (11): 1246–1262. SPE-13933-PA. http://dx.doi.org/10.2118/13933-PA.
Ayirala, S.C., Vijapurapu, C.S., and Rao, D.N. 2006. Beneficial Effects of Wettability Altering Surfactants in Oil-Wet Fractured Reservoirs. J. Pet. Sci. & Eng. 52 (1–4): 261–274. http://dx.doi.org/10.1016/j.petrol.2006.03.019.
Caweizel. 2007. Method of Acidizing a Subterranean Formation With Diverting Foam or Fluid. US Patent No. 7303018.
Chang, F., Qu, Q., and Frenier, W. 2001. A Novel Self-Diverting-Acid Developed for Matrix Stimulation of Carbonate Reservoirs. Presented at the SPE International Symposium on Oilfield Chemistry, Houston, Texas, 13–16 February. SPE-65033-MS. http://dx.doi.org/10.2118/65033-MS.
Crews, J.B. and Huang, T. 2007. Internal Breakers for Viscoelastic Surfactant Fracturing Fluids. Presented at the International Symposium on Oilfield Chemistry, Houston, Texas, 28 February–2 March. SPE-106216-MS. http://dx.doi.org/10.2118/106216-MS.
Cuiec, L. 1989. Effect of Drilling Fluids on Rock Surface Properties. SPE Form Eval 4 (1): 38–44. SPE-15707-PA. http://dx.doi.org/10.2118/15707-PA.
Economides, M.J. and Nolte, K.G. 2000. Reservoir Stimulation. Chichester Wiley, 14–26, 30.
Gardner, J.E. and Hayes, M.E. 2007. Instruction Manual for the University of Texas Spinning Drop Tensiometer, Model 500. Department of Chemistry: University of Texas at Austin.
Graue, A., Viksund, B.G., Eilertsen, T. et al. 1999. Systematic Wettability Alteration by Aging Sandstone and Carbonate Rock in Crude Oil. J Pet. Sci. & Eng. 24 (2–4): 85–97. http://dx.doi.org/10.1016/s0920-4105(99)00033-9.
Hall, B.E. 1975. The Effect of Mutual Solvents on Adsorption in Sandstone Acidizing. J Pet Technol 27 (12): 1439–1442. SPE-5377-PA. http://dx.doi.org/10.2118/5377-PA.
Hinkel, J.J., Brown, J.E., Gadiyar, B.R. et al. 2003. New Environmentally Friendly Surfactant Enhances Well Cleanup. Presented at the SPE European Formation Damage Conference, The Hague, The Netherlands, 13–14 May. SPE-82214-MS. http://dx.doi.org/10.2118/82214-MS.
Hjelmeland, O.S. and Larrondo, L.E. 1986. Experimental Investigation of the Effects of Temperature, Pressure, and Crude Oil Composition on Interfacial Properties. SPE Res Eval & Eng 1 (7): 321–328. SPE-12124-PA. http://dx.doi.org/10.2118/12124-PA.
Huang, T. and Crews, J.B. 2008. Do Viscoelastic-Surfactant Diverting Fluids for Acid Treatments Need Internal Breakers? Presented at the SPE International Symposium and Exhibition on Formation Damage Control, Lafayette, Louisiana, 13–15 February. SPE-112484-MS. http://dx.doi.org/10.2118/112484-MS.
Jennings, A.R. Jr. 1975. The Effect of Surfactant-Bearing Fluids on Permeability Behavior in Oil-Producing Formations. Presented at the Fall Meeting of the Society of Petroleum Engineers of AIME, Dallas, Texas, 28 September–1 October. SPE-5635-MS. http://dx.doi.org/10.2118/5635-MS.
Li, L., Nasr-El-Din, H.A., and Cawiezel, K.E. 2010. Rheological Properties of a New Class of Viscoelastic Surfactant. SPE Prod & Oper 25 (3): 355–366. SPE-121716-PA. http://dx.doi.org/10.2118/121716-PA.
Li, L., Nasr-El-Din, H.A., Crews, J. et al. 2011. Impact of Organic Acids/Chelating Agents on Rheological Properties of Amidoamine-Oxide Surfactant. SPE Prod & Oper 26 (1): 30–40. SPE-128091-PA. http://dx.doi.org/10.2118/128091-PA.
Lowe, A.C., Phillips, M.C., and Riddiford, A.C. 1973. On the Wetting of Carbonate Surfaces by Oil and Water. J Can Pet Technol 12 (2): 33–40. SPE- 73-02-04-PA. http://dx.doi.org/10.2118/73-02-04-PA.
Lungwitz, B.R., Fredd, C.N., Brady, M.E. et al. 2007. Diversion and Cleanup Studies of Viscoelastic Surfactant-Based Self-Diverting Acid. SPE Prod & Oper 22 (1): 121–127. SPE-86504-PA. http://dx.doi.org/10.2118/10.2118/86504-PA.
Mohan, K., Gupta, R., and Mohanty, K.K. 2011. Wettability Altering Secondary Oil Recovery in Carbonate Rocks. Energy & Fuels 25 (9): 3966–3973. http://dx.doi.org/10.1021/ef200449y.
Muhammad, Z. and Rao, D.N. 2003. Determination of Dynamic Contact Angles in Solid-Liquid-Liquid Systems Using the Wilhelmy Plate Apparatus. J. Adhesion Sci. & Technol. 17 (9): 1187–1206. http://dx.doi.org/10.1163/156856103322114534.
Nasr-El-Din, H.A. 2005. Formation Damage Induced by Chemical Treatments: Case Histories. J. Energy Resour. Technol. 127 (3): 214–224.
Nasr-El-Din, H.A., Al-Ghamdi, A.H., Al-Qahtani, A.A. et al. 2008. Impact of Acid Additives on the Rheological Properties of a Viscoelastic Surfactant and Their Influence on Field Application. SPE J. 13 (1): 35–47. SPE-89418-PA. http://dx.doi.org/10.2118/89418-PA.
Nasr-El-Din, H.A., Al-Mohammed, A.M., Al-Aamri, A.D. et al. 2009. Quantitative Analysis of Reaction-Rate Retardation in Surfactant-Based Acids. SPE Prod & Oper 24 (1): 107–116. SPE-107451-PA. http://dx.doi.org/10.2118/107451-PA.
Nasr-El-Din, H.A., Chesson, J.B., Cawiezel, K.E. et al. 2006a. Lessons Learned and Guidelines for Matrix Acidizing With Viscoelastic Surfactant Diversion in Carbonate Formations. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24–27 September. SPE-102468-MS. http://dx.doi.org/10.2118/102468-MS.
Nasr-El-Din, H.A., Chesson, J.B., Cawiezel, K.E. et al. 2006b. Investigation and Field Evaluation of Foamed Viscoelastic Surfactant Diversion Fluid Applied During Coiled-Tubing Matrix-Acid Treatment. Presented at the SPE/ICoTA Coiled Tubing Conference and Exhibition, The Woodlands, Texas, 4–5 April. SPE-99651-MS. http://dx.doi.org/99651-MS.
Nasr-El-Din, H.A., Chesson, J.B., Cawiezel, K.E. et al. 2006c. Field Success in Carbonate Acid Diversion, Utilizing Laboratory Data Generated by Parallel Flow Testing. Presented at the SPE Annual Technical Conference and Exhibition, San Antonio, Texas, 24–27 September. SPE-102828-MS. http://dx.doi.org/10.2118/102828-MS.
Rao, D.N. 1999. Wettability Effects in Thermal Recovery Operations. SPE Res Eval & Eng 2 (5): 420–430. SPE-57897-PA. http://dx.doi.org/10.2118/57897-PA.
Rao, D.N. and Girard, M.G. 1996. A New Technique for Reservoir Wettability Characterization. J Can Pet Technol 35 (1). SPE-96-01-05-PA. http://dx.doi.org/10.2118/96-01-05-PA.
Río, O.I.D. and Neumann, A.W. 1997. Axisymmetric Drop Shape Analysis: Computational Methods for the Measurement of Interfacial Properties from the Shape and Dimensions of Pendant and Sessile Drops. J Colloid & Interface Sci. 196 (2): 136–147.
Sayyouh, M.H., Hemeida, A.M., Al-Blehed, M.S. et al. 1991. Role of Polar Compounds in Crude Oils on Rock Wettability. J. Pet. Sci. & Eng. 6 (3): 225–233. http://dx.doi.org/10.1016/0920-4105(91)90015-f.
Standnes, D.C. and Austad, T. 2000. Wettability Alteration in Chalk: 1. Preparation of Core Material and Oil Properties. J. Pet. Sci. & Eng. 28 (3): 111–121. http://dx.doi.org/10.1016/s0920-4105(00)00083-8.
Taylor, K.C., Al-Ghamdi, A.H., and Nasr-El-Din, H.A. 2004. Effect of Additives on the Acid Dissolution Rates of Calcium and Magnesium Carbonates. SPE Prod & Oper 19 (3): 122–127. SPE-80256-PA. http://dx.doi.org/10.2118/80256-PA.
Tiab, D. and Donaldson, E.C. 1996. Petrophysics: Theory and Practice of Measuring Reservoir Rock and Fluid Transport Properties, 394, 398, 361, 364, 365. Houston, Texas: Gulf Publishing Company.
Vijapurapu, C.S. and Rao, D.N. 2004. Compositional Effects of Fluids on Spreading, Adhesion and Wettability in Porous Media. Coll. & Surf. A: Physicochem. & Eng. Aspects 241 (1–3): 335–342.
Wang, W. and Gupta, A. 1995. Investigation of the Effect of Temperature and Pressure on Wettability Using Modified Pendant Drop Method. Presented at the SPE Annual Technical Conference and Exhibition, Dallas, Texas, 22–25 October. SPE-30544-MS. http://dx.doi.org/10.2118/30544-MS.
Xu, W., Ayirala, S.C., and Rao, D.N. 2008. Measurement of Surfactant-Induced Interfacial Interactions at Reservoir Conditions. SPE Res Eval & Eng 11 (1): 83–94. SPE-96021-PA. http://dx.doi.org/10.2118/96021-PA.
Yu, M., Mahmoud, M.A., and Nasr-El-Din, H.A. 2011. Propagation and Retention of Viscoelastic Surfactants Following Matrix-Acidizing Treatments in Carbonate Cores. SPE J. 16 (4): 993–1001. SPE-128047-PA. http://dx.doi.org/10.2118/128047-PA.