Numerical Simulation of Dry Gas Migration in Condensate Gas Reservoir
Abstract
Dry gas overlies on condensate gases and flows due to the difference in density. This phenomenon affects cyclic injectionexploitation and increases production costs. A mathematical model of dry gas migration was developed in this study toinvestigate the migration characteristics and the overlying law for dry gas in the condensate gas reservoir. On the basis of thetheory of convection diffusion, the governing equations were constructed, using dry and condensate gases as two pseudocomponents.The distribution and transition belt of dry gas, as well as the effects of condensate oil and the perforation methodon overlying of dry gas were discussed based on the dry gas migration model. The results demonstrate that the width of thetransition belt of dry and condensate gases increases gradually over time. The mole fraction of gas in the transition belt isdense in the middle, but sparse at the two ends. The overlying of dry gas is easy, taking condensate oil into consideration. Thevalue of F increases by 0.32, but the width of the transition belt becomes narrow. The transition belt under the top perforationof the reservoir is wider than that under symmetric perforation, and the overlying degree of dry gas increases. This studyprovides a theoretical foundation for in situ adjustment and optimization of cyclic gas injection utilization.References
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condensate reservoirs, SPE Reservoir Evaluation & Engineering 7 (05)
(2004) 334–341.
[2] M. Sadooni, A. Zonnouri, The effect of nitrogen injection on production
improvement in an iranian rich gas condensate reservoir, Petroleum
Science and Technology 33 (4) (2015) 422–429.
[3] M. Nasiri Ghiri, H. R. Nasriani, M. Sinaei, S. Najibi, E. Nasriani, H. Parchami,
Gas injection for enhancement of condensate recovery in a gas
condensate reservoir, Energy Sources, Part A: Recovery, Utilization,
and Environmental Effects 37 (8) (2015) 799–806.
[4] J. T. Linderman, F. S. Al-Jenaibi, S. G. Ghori, K. Putney, J. Lawrence,
M. Gallat, K. Hohensee, et al., Feasibility study of substituting nitrogen
for hydrocarbon in a gas recycle condensate reservoir, in: Abu
Dhabi International Petroleum Exhibition and Conference, Society of
Petroleum Engineers, 2008.
[5] P. GUO, S.-l. LI, L. SUN, L.-t. SUN, Effect of different injection gas on
condensate gas phase state [j], Xinjiang Petroleum Geology 3 (2001)
021.
[6] L. Yuguan, Adjustment measures of circulating gas injection in kekeya
condensate gas field in xinjiang province and its development effectiveness,
Natural Gas Industry 20 (4) (2000) 61–62.
[7] Y. Shenglai, C. Hao, F. Jilei, et al., A brief discussion on some scientific
issues to improve oil displacement during gas injection, tarim oilfield,
Petroleum Geology and Recovery Efficiency 21 (1) (2014) 40–44.
[8] W. Zhu, F. Zhang, M. Tang, H. Wang, Methods of cyclic gas injection
to retard gas channeling in the yaha condensate gas field, Natural Gas
Industry 28 (10) (2008) 76–77.
[9] Y. Yong, W. Helin, Y. Yunfu, W. Jianfu, Z. Xidong, Z. Guowang, C. Aibing,
Application of mdt logging technology in accurate identification of
knotty oil and gas layers, China Petroleum Exploration 11 (5) (2006)
52–57.
[10] Z. Y. Abbasov, V. M. Fataliyev, The effect of gas-condensate reservoir
depletion stages on gas injection and the importance of the aerosol
state of fluids in this process, Journal of Natural Gas Science and Engineering
31 (2016) 779–790.
[11] N. Hamidov, V. Fataliyev, Experimental study into the effectiveness of
the partial gas cycling process in the gas-condensate reservoir development,
Petroleum Science and Technology 34 (7) (2016) 677–684.
[12] K. Luo, T. Zhong, A discussion on the layering of near-critical gas condensate
in pvt cell, Petroleum Exploration and Development 26 (1999)
68–70.
[13] L. Ayala, T. Ertekin, M. Adewumi, Compositional modeling of retrograde
gas-condensate reservoirs in multimechanistic flow domains.
spej 11 (4): 480–487, Tech. rep., SPE-94856-PA. DOI: 10.2118/94856-
PA (2006).
[14] S. Jun, The study and application of numerical simulation and phase
analyses to condensate gas reservoir, Natural Gas Exploration & Development
27 (1) (2004) 39–45.
[15] Z. Long, L. Cheng, A pseudo-three dimensional compositional model,
Journal of the University of Petroleum, China 14 (1) (1990) 16–25.
[16] H. Adel, D. Tiab, T. Zhu, et al., Effect of gas recycling on the enhancement
of condensate recovery, case study: Hassi r’mel south field, algeria,
in: International Oil Conference and Exhibition in Mexico, Society
of Petroleum Engineers, 2006.
[17] L. Shilun, S. Lei, G. Ping, Re-discussion of eor with gas injection in
china, Natural Gas Industry 26 (12) (2006) 30–34.
[18] G. Ping, J. Shasha, P. Caizhen, Technology and countermeasures for
gas recovery enhancement, Natural Gas Industry 34 (2) (2014) 48–55.
[19] W. Rossen, C. Van Duijn, Gravity segregation in steady-state horizontal
flow in homogeneous reservoirs, Journal of Petroleum Science and
Engineering 43 (1-2) (2004) 99–111.
[20] M. Jamshidnezhad, T. Ghazvian, Analytical modeling for gravity segregation
in gas improved oil recovery of tilted reservoirs, Transport in
Porous Media 86 (3) (2011) 695–704.
[21] J. Huo, Y. Jia, J. Yu, et al., Well test method in heavy oil thermal
recovery with consideration of gravity override, Journal of Southwest
Petroleum Institute 28 (2) (2006) 52–55.
[22] Y. Jiao, B. Li, Z. X. Wang Bo, N. Chen, Research on mechanisms of
cycling reinjection in gas-condensate reservoir, Xinjiang Oil & Gas 6
(2010) 63–66.
[23] Y. Zhao, Z. Jiang, S. Ge, et al., On gas injection monitoring by downhole
fluids composition analysis, Well Logging Technology 39 (2015)
379–383.
[24] L. Zhang, W. Xie, J. Yang, et al., Gravity segregation of the cyclic
gas injection in the condensate gas reservoirs in the middle and late
development stages, Petroleum Geology and Oilfield Development in
Daqing 35 (2016) 120–125.
[25] H. R. Nasriani, E. Asadi, M. Nasiri, L. Khajenoori, M. Masihi, Challenges
of fluid phase behavior modeling in iranian retrograde gas condensate
reservoirs, Energy Sources, Part A: Recovery, Utilization, and
Environmental Effects 37 (6) (2015) 663–669.
[26] P. Guo, H. Xu, Z. Wang, et al., Calculation of multi-component gas-gas
diffusion coefficient, Natural Gas Industry 35 (8) (2015) 39–43.
[27] R. Krishna, A generalized film model for mass transfer in non-ideal fluid
mixtures, Chemical Engineering Science 32 (6) (1977) 659–667.
[28] R. Krishna, J. Wesselingh, The maxwell-stefan approach to mass
transfer, Chemical Engineering Science 52 (6) (1997) 861–911.
[29] G. W. Z. H. L. Zeng, Y. T. Wen-Quan, The simulation of mass transfer
processes of multi-component systems by maxwell-stefan model [j],
Journal Of Engineering Thermophysics 4 (2012) 035.
[30] K. Ghorayeb, A. Firoozabadi, Molecular, pressure, and thermal diffusion
in nonideal multicomponent mixtures, AIChE Journal 46 (5) (2000)
883–891.
[31] J. Monteagudo, A. Firoozabadi, Comparison of fully implicit and impes
formulations for simulation of water injection in fractured and unfractured
media, International journal for numerical methods in engineering
69 (4) (2007) 698–728.
[32] H. S. Najafi, S. Edalatpanah, On the modified symmetric successive
over-relaxation method for augmented systems, Computational and
Applied Mathematics 34 (2) (2015) 607–617.
Published
2018-07-30
How to Cite
SUN, Y. et al.
Numerical Simulation of Dry Gas Migration in Condensate Gas Reservoir.
Journal of Power Technologies, [S.l.], v. 98, n. 2, p. 212–219, july 2018.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1288>. Date accessed: 21 nov. 2024.
Issue
Section
Energy Engineering and Technology
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