Compositional Simulation of Asphaltene Deposition During
Pressure Depletion in Reservoir

doi:10.12972/ksmer.2015.52.5.461

All Issue

2015 Vol.52, Issue 5 Next Page

Research Paper

Compositional Simulation of Asphaltene Deposition During Pressure Depletion in Reservoir 저류층 내 압력 강하에 따른 아스팔텐 퇴적 현상의 다성분 시뮬레이션: 조진형·정문식·이근상
Jinhyung Cho, Moon Sik Jeong and Kun Sang Lee

31 October 2015. pp. 461-468

PDF

Abstract

Asphaltene existing as oil phase in initial reservoir condition can be precipitated by a number of factorsincluding changes in pressure, temperature, and composition. Asphaltene precipitation, flocculation, and depositionin the reservoir cause serious formation damages such as porosity and permeability reduction and wettabilityalteration. In this study, asphaltene solid model is applied to predict the amount of asphaltene precipitation withpressure depletion. The compositional simulation for asphaltene precipitation, flocculation, deposition, andre-entrainment is performed to analyze its effects on formation damage causing reduced oil recovery. Productionstrategy for minimizing formation damage is designed by different oil flow velocity with different oil productionrate. Oil relative permeability for deposited asphaltene removal model (Case 2) is higher up to 0.2 than basecase (Case 1), and oil resistance factor is decreased by 20%. As a result, the enhancement of oil recovery forCase 2 is 1.4% over Case 1.

Keywords

Asphaltene

Precipitation

Deposition

Oil resistance factor

Oil flow velocity

오일 내에 존재하는 아스팔텐은 저류층 초기 조건 하에서는 오일상으로 존재하지만 생산 지속에 따른압력, 온도, 조성 변화에 따라 고체상으로 침전될 수 있다. 저류층 내에서 아스팔텐이 침전, 응집, 퇴적되면 공극률과 투과도 감소 및 습윤도 변질작용에 의해 지층손상을 일으키게 되고 오일의 생산성을 저해시킨다. 본 연구에서는 아스팔텐 고체모델을 사용하여 저류층 내 압력 변화에 따른 아스팔텐 침전량을 산출하였다. 아스팔텐의침전, 퇴적 및 재유입에 의한 지층 손상이 오일 회수율에 미치는 영향을 분석하기 위한 다성분 시뮬레이션 연구를 수행하였다. 생산압력 변화를 통하여 저류층 내 오일의 유동 속도를 변화시키고, 이에 따라 지층손상을 최소화하는 생산 설계에 대하여 분석하였다. 아스팔텐 퇴적 제거모델(Case 2)의 상대투과도는 기본모델(Case 1)에비해 최대 0.2가 높고, 오일 저항계수는 20% 감소되었다. 그 결과 Case 2의 오일 회수율이 Case 1에 비해 1.4%증진되었다.

키워드

아스팔텐

침전

퇴적

오일 저항계수

오일 유동 속도

References

Akbarzadeh, K., Hammami, A., Kharrat, A., Zhang, D., Allenson, S., Creek, J., Kabir, S., Jamaluddin, A., Marshall, A.G., Rodgers, R.P., Mullins, O.C. and Solbakken, T., 2007, “Asphaltenes—Problematic but Rich in Potential,” Oilfield Review, Vol. 19, No. 02, pp. 22-43.
Darabi, H. Sepehnoori, K. and Kalaei, M.H., 2012, “Modeling of Wettability Alteration Due to Asphaltene Deposition in Oil Reservoirs,” SPE 159554 presented at SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, October 8-10.
Darabi, H., Shirdel, M., Kalaei, M.H. and Sepehrnoori, K., 2014, “Aspects of Modeling Asphaltene Deposition in a Compositional Coupled Wellbore/ Reservoir Simulator,” SPE 169121 presented at SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, April 12-16.
Delshad, M., Najafabadi, N.F., Anderson, G.A., Pope, G.A. and Sepehrnoori, K., 2006, “Modeling Wettability Alteration in Naturally Fractured Reservoirs,” SPE 100081 presented at SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA, April 22-26.
Gonzalez K.G., Barrufet, M.A. and Nasrabadi, H., 2014, “Development of a Compositional Reservoir Simulator Including Asphaltene Precipitation from a Thermodynamic Consistent Model,” SPE 169401 presented at SPE Latin America and Caribbean Petroleum Engineering Conference, Maracaibo, Venezuela, May 21-23.
Gupta, A.K., 1986, “A Model for Asphaltene Flocculation Using an Equation of State,” M.Sc. Thesis, Department of Chemical and Petroleum Engineering, University of Calgary.
Hirschberg, A., deJong, L.N.J., Schipper, B.A. and Meijer, J.G., 1984, “Influence of Temperature and Pressure on Asphaltene Flocculation,” J. of SPE, Vol. 24, No. 03, pp. 283-293.
Kohse, B.F. and Nghiem, L.X., 2004, “Modelling Asphaltene Precipitation and Deposition in a Compositional Reservoir Simulator,” SPE 89437 presented at SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA, April 17-21.
Lee, W.S., Kim, I.K., Huh, D.G., Kim, H.T., Kim, S.J. and Park, H.W., 2002, “Development of User-Oriented Visual Phase Behavior Simulation Model,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 39, No. 4, pp. 289-296.
Nghiem, L.X., Hassam, M.S., Nutakki, R. and George, A.E.D., 1993, “Efficient Modelling of Asphaltene Precipitation,” SPE 26642 presented at SPE Annual Technical Conference and Exhibition, Houston, Texas, USA, October 3-6.
Nghiem, L.X. and Coombe, D.A., 1997, “Modelling Asphaltene Precipitation During Primary Depletion,” J. of SPE, Vol. 2, No. 2, pp. 170-176.
Pan, H. and Firoozabadi, A., 1998, “A Thermodynamic Micellization Model for Asphaltene Precipitation: Part I: Micellar Size and Growth,” J. of SPE Production & Facilities, Vol. 13, No. 2, pp. 118-127.
Peng, D.Y. and Robinson, D.B., 1976, “A New Two-Constant Equation of State,” Industrial & Engineering Chemistry Fundamentals, Vol. 15, No. 1, pp. 59-64.
Reis, J.C. and Acock, A.M., 1994, “Permeability Reduction Models for the Precipitation of Inorganic Solids in Berea Sandstone,” In Situ, Vol. 18, No. 3, pp.347-368.
Robinson, D.B. and Peng, D.Y., 1978, The Characterization of the Heptanes and Heavier Fractions, Research Report 28, Gas Processors Association, Tulsa, Oklahoma, USA, 1978.
Srivastava, R.K. and Huang, S.S., 1997, “Asphaltene Deposition During CO2 Flooding: A Laboratory Assessment,” SPE 37468 presented at SPE Production Operations Symposium, Oklahoma City, Oklahoma, USA, March 9-11.
Wang, S. and Civan, F., 2001, “Productivity Decline of Vertical and Horizontal Wells by Asphaltene Deposition in Petroleum Reservoirs,” SPE 64991 presented at SPE International Symposium on Oilfield Chemistry, Houston, Texas, USA, February 13-16.

Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 52
No :5
Pages :461-468
DOI :https://doi.org/10.12972/ksmer.2015.52.5.461

[1] Akbarzadeh, K., Hammami, A., Kharrat, A., Zhang, D., Allenson, S., Creek, J., Kabir, S., Jamaluddin, A., Marshall, A.G., Rodgers, R.P., Mullins, O.C. and Solbakken, T., 2007, “Asphaltenes—Problematic but Rich in Potential,” Oilfield Review, Vol. 19, No. 02, pp. 22-43.

[2] Darabi, H. Sepehnoori, K. and Kalaei, M.H., 2012, “Modeling of Wettability Alteration Due to Asphaltene Deposition in Oil Reservoirs,” SPE 159554 presented at SPE Annual Technical Conference and Exhibition, San Antonio, Texas, USA, October 8-10.

[3] Darabi, H., Shirdel, M., Kalaei, M.H. and Sepehrnoori, K., 2014, “Aspects of Modeling Asphaltene Deposition in a Compositional Coupled Wellbore/ Reservoir Simulator,” SPE 169121 presented at SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, April 12-16.

[4] Delshad, M., Najafabadi, N.F., Anderson, G.A., Pope, G.A. and Sepehrnoori, K., 2006, “Modeling Wettability Alteration in Naturally Fractured Reservoirs,” SPE 100081 presented at SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA, April 22-26.

[5] Gonzalez K.G., Barrufet, M.A. and Nasrabadi, H., 2014, “Development of a Compositional Reservoir Simulator Including Asphaltene Precipitation from a Thermodynamic Consistent Model,” SPE 169401 presented at SPE Latin America and Caribbean Petroleum Engineering Conference, Maracaibo, Venezuela, May 21-23.

[6] Gupta, A.K., 1986, “A Model for Asphaltene Flocculation Using an Equation of State,” M.Sc. Thesis, Department of Chemical and Petroleum Engineering, University of Calgary.

[7] Hirschberg, A., deJong, L.N.J., Schipper, B.A. and Meijer, J.G., 1984, “Influence of Temperature and Pressure on Asphaltene Flocculation,” J. of SPE, Vol. 24, No. 03, pp. 283-293.

[8] Kohse, B.F. and Nghiem, L.X., 2004, “Modelling Asphaltene Precipitation and Deposition in a Compositional Reservoir Simulator,” SPE 89437 presented at SPE/DOE Symposium on Improved Oil Recovery, Tulsa, Oklahoma, USA, April 17-21.

[9] Lee, W.S., Kim, I.K., Huh, D.G., Kim, H.T., Kim, S.J. and Park, H.W., 2002, “Development of User-Oriented Visual Phase Behavior Simulation Model,” J. of the Korean Society of Mineral and Energy Resources Engineers, Vol. 39, No. 4, pp. 289-296.

[10] Nghiem, L.X., Hassam, M.S., Nutakki, R. and George, A.E.D., 1993, “Efficient Modelling of Asphaltene Precipitation,” SPE 26642 presented at SPE Annual Technical Conference and Exhibition, Houston, Texas, USA, October 3-6.

[11] Nghiem, L.X. and Coombe, D.A., 1997, “Modelling Asphaltene Precipitation During Primary Depletion,” J. of SPE, Vol. 2, No. 2, pp. 170-176.

[12] Pan, H. and Firoozabadi, A., 1998, “A Thermodynamic Micellization Model for Asphaltene Precipitation: Part I: Micellar Size and Growth,” J. of SPE Production & Facilities, Vol. 13, No. 2, pp. 118-127.

[13] Peng, D.Y. and Robinson, D.B., 1976, “A New Two-Constant Equation of State,” Industrial & Engineering Chemistry Fundamentals, Vol. 15, No. 1, pp. 59-64.

[14] Reis, J.C. and Acock, A.M., 1994, “Permeability Reduction Models for the Precipitation of Inorganic Solids in Berea Sandstone,” In Situ, Vol. 18, No. 3, pp.347-368.

[15] Robinson, D.B. and Peng, D.Y., 1978, The Characterization of the Heptanes and Heavier Fractions, Research Report 28, Gas Processors Association, Tulsa, Oklahoma, USA, 1978.

[16] Srivastava, R.K. and Huang, S.S., 1997, “Asphaltene Deposition During CO2 Flooding: A Laboratory Assessment,” SPE 37468 presented at SPE Production Operations Symposium, Oklahoma City, Oklahoma, USA, March 9-11.

[17] Wang, S. and Civan, F., 2001, “Productivity Decline of Vertical and Horizontal Wells by Asphaltene Deposition in Petroleum Reservoirs,” SPE 64991 presented at SPE International Symposium on Oilfield Chemistry, Houston, Texas, USA, February 13-16.

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

All Issue