Mechanisms, Parameters, and Modeling of Naphthenate-Soap-Induced Formation Damage
- Sukru Sarac (Schlumberger) | Faruk Civan (University of Oklahoma)
- Document ID
- Society of Petroleum Engineers
- SPE Journal
- Publication Date
- June 2009
- Document Type
- Journal Paper
- 259 - 266
- 2009. Society of Petroleum Engineers
- 4.3.3 Aspaltenes, 4.2 Pipelines, Flowlines and Risers, 5.2 Reservoir Fluid Dynamics, 1.8 Formation Damage, 4.1.5 Processing Equipment, 4.2.3 Materials and Corrosion, 4.6 Natural Gas, 4.1.2 Separation and Treating, 4.1.4 Gas Processing, 4.3.4 Scale, 2.2.2 Perforating, 5.6.4 Drillstem/Well Testing, 5.3.1 Flow in Porous Media, 4.3 Flow Assurance, 1.6.9 Coring, Fishing
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- 621 since 2007
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Naphthenate-soap deposition and the related formation damage in petroleum reservoirs are investigated by means of laboratory-scale experimental and theoretical studies. Experiments were carried out in three directions to understand and quantify the naphthenate-soap-deposition problem. Static bottle tests were conducted to determine the precipitation rate for various pH and temperature conditions. Microscopy investigations were carried out to verify the growth of naphthenate-soap particles under different pH conditions. Core-flow tests were conducted to generate naphthenate-soap particles and to determine the permeability impairment caused by subsequent deposition of these particles in porous media under flowing conditions and different pH values. A power-law expression was proposed and verified for the precipitation rate of the naphthenate-soap particles. The parameters of the rate equation were correlated with respect to pH and temperature. This also allowed the determination of the critical pH value for the onset of naphthenate-soap precipitation. The results of the particle-size experiments were described by a particle-growth equation, and the parameters of the equation were correlated with respect to pH. The core-flow experiments proved the occurrence of formation damage caused by naphthenate-soap precipitation and subsequent deposition. The permeability impairment in core-flow experiments was described by a new differential model. The applications presented in this study provide insights for understanding the mechanism and magnitude of naphthenate-soap-induced formation damage and help in taking proper measures to avoid the formation damage caused by naphthenate-soap deposition.
|File Size||608 KB||Number of Pages||8|
Baugh, T.D., Grande, K.V., Mediaas, H., Vindstad, J.E., and Wolf, N.O. 2005.The Discovery of High MolecularWeight Naphthenic Acids (ARN Acid) Responsible for Calcium NaphthenateDeposits. Paper SPE 93011 presented at the SPE International Symposium onOilfield Scale, Aberdeen, 11-12 May. doi: 10.2118/93011-MS.
Burya, Y.G., Yudin, I.K., Dechabo, V.A., Kosov, V.I., and Anisimov, M.A.2001. Light-scattering studyof petroleum asphaltene aggregation. Applied Optics 40(24): 4028-4035. doi:10.1364/AO.40.004028.
Civan, F. 2006. Viscosity-temperaturecorrelation for crude oils using an Arrhenius-type asymptotic exponentialfunction. Petroleum Science and Technology 24 (6):699-706. doi:10.1081/LFT-200041178.
Civan, F. 2007a. Reservoir Formation Damage--Fundamentals, Modeling,Assessment, and Mitigation, second edition. Burlington, Massachusetts: GulfProfessional Publishing.
Civan, F. 2007b. Temperature effect on powerfor particle detachment from pore wall described by an Arrhenius-typeequation. Transport in Porous Media 67 (2): 329-334.doi:10.1007/s11242-006-9005-3.
Civan, F. and Weers, J.J. 2001. Laboratory and Theoretical Evaluationof Corrosion Inhibiting Emulsions. SPE Prod & Fac16 (4): 260-266. SPE-74271-PA. doi: 10.2118/74271-PA.
Civan, F., Alarcon, L.J., and Campbell, S.E. 2004. Laboratory confirmationof new emulsion stability model. J. Pet. Sci. Eng. 43(1-2): 25-34. doi:10.1016/j.petrol.2003.11.002.
Dyer, S.J., Graham, G.M., and Arnott, C. 2003. Naphthenate ScaleFormation--Examinations of Molecular Controls in Idealized Systems. PaperSPE 80395 presented at the International Symposium on Oilfield Scale, Aberdeen,29-30 January. doi: 10.2118/80395-MS.
Ese, M.-H. and Kilpatrick, P.K. 2004. Stabilization of water-in-oilemulsions by naphthenic acids and their salts: Model compounds, role of pH, andsoap: Acid ratio. Journal of Dispersion Science and Technology25 (3): 253-261. doi:10.1081/DIS-120038634.
Goldszal, A., Hurtevent, C., and Rousseau, G. 2002. Scale and Naphthenate Inhibition inDeep-Offshore Fields. Paper SPE 74661 presented at the InternationalSymposium on Oilfield Scale, Aberdeen, 30-31 January. doi:10.2118/74661-MS.
Havre, T.E. 2004. Near-IR Spectroscopy as aMethod for Studying the Formation of Calcium Naphthenate. Colloid &Polymer Science 282 (3): 270-279.doi:10.1007/s00396-003-0939-5.
Havre, T.E., Sjöblom, J., and Vindstad, J.E. 2003. Oil/Water-Partitioning andInterfacial Behavior of Naphthenic Acids. Journal of Dispersion Scienceand Technology 24 (6): 789-801. doi:10.1081/DIS-120025547.
Hung, J., Castillo, J., and Reyes, A. 2005. Kinetics of asphaltene aggregationin toluene-heptane mixtures studied by confocal microscopy. Energy &Fuels 19 (3): 898-904. doi:10.1021/ef0497208.
Hurtevent, C. and Ubbels, S. 2006. Preventing Naphthenate StabilizedEmulsions and Naphthenate Deposits on Fields Producing Acidic Crude Oils.Paper SPE 100430 presented at the SPE International Oilfield Scale Symposium,Aberdeen, 31 May-1 June. doi: 10.2118/100430-MS.
Iscan, A.G. and Civan, F. 2006. Correlation of criteria forperforation and pore plugging by particles. Journal of Porous Media9 (6): 541-558. doi:10.1615/JPorMedia.v9.i6.40.
Laredo, G.C., López, C.R., Álvarez, R.E., and Cano, J.L. 2004. Naphthenic acids, totalacid number and sulfur content profile characterization in Isthmus and Mayacrude oils. Fuel 83 (11-12): 1689-1695.doi:10.1016/j.fuel.2004.02.004.
Rastegari, K., Svrcek, W.Y., and Yarranton, H.W. 2004. Kinetics of asphalteneflocculation. Industrial & Engineering Chemistry Research43 (21): 6861-6870. doi:10.1021/ie049594v.
Rousseau, G., Zhou, H., and Hurtevent, C. 2001. Calcium Carbonate and NaphthenateMixed Scale in Deep-Offshore Fields. Paper SPE 68307 presented at theInternational Symposium on Oilfield Scale, Aberdeen, 30-31 January. doi:10.2118/68307-MS.
Sarac, S. and Civan, F. 2007. Experimental Investigation andModeling of Naphthenate Soap Precipitation Kinetics in PetroleumReservoirs. Paper SPE 106074 presented at the International Symposium onOilfield Chemistry, Houston, 28 February-2 March. doi: 10.2118/106074-MS.
Shepherd, A.G., Thomson, G., Westacott, R., Neville, A., and Sorbie, K.S.2005. A Mechanistic Study ofNaphthenate Scale Formation. Paper SPE 93407 presented at the SPEInternational Symposium on Oilfield Chemistry, The Woodlands, Texas, USA, 2-4February. doi: 10.2118/93407-MS.
Wojtanowicz, S.K., Krilov, Z., and Langlinais, J.P. 1987. Study of the Effect of Pore BlockingMechanisms on Formation Damage. Paper SPE 16233 presented at the SPEProduction Operations Symposium, Oklahoma City, Oklahoma, USA, 8-10 March. doi:10.2118/16233-MS.
Yudin, I.K., Nikolaenko, G.L., Gorodetskii, E.E., Kosov, V.I., Melikyan,V.R., Markhasov, E.L., Frot, D., and Briolant, Y. 1998. Mechanisms of asphalteneaggregation in toluene-heptane mixtures. J. Pet. Sci. Eng.20 (3-4): 297-301. doi:10.1016/S0920-4105(98)00033-3.