The Numerical Simulation Study of Basal Water Condensate Gas Reservoir in Gas-Water Transition Zone：An Example from TⅡ2 Condensate Gas Reservoir in Jilake Gasfield

LI Shi-chuan, HUANG Zhao-ting, JIANG Tong-wen, NIU Yu, YANG Jian-ping, CHENG Rong-hong, XIE Wei, WANG Bin

doi:10.11764/j.issn.1672-1926.2014.11.1855

2014 , Vol. 25 >Issue 11: 1855 - 1860

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.11.1855

The Numerical Simulation Study of Basal Water Condensate Gas Reservoir in Gas-Water Transition Zone：An Example from TⅡ2 Condensate Gas Reservoir in Jilake Gasfield

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1.Exploration and Development Research Institute,PetroChina Tarim Oilfield Company,Korla 841000,China| 2.Southwest Petroleum University,Chengdu 610500,China| 3.PetroChina Tarim Oilfield Company,Korla 841000,China)

Received date: 2013-12-11

Revised date: 2014-05-22

Online published: 2019-09-20

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Abstract

The TⅡ2 basal water condensate gas reservoir in Jilake Gasfield has some characters，i.e.,low amplitude of structure,severe heterogeneity,low resistivity gas horizon in the top of gas reservoir,complex gas-water distribution.Combined with the geology setting and production performance of the gas reservoir,mercury penetration data were classified and handled to calculate the height of gas-water transitional zone,and it is concluded that it is a basal water condensate gas reservoir in gas-water transitional zone.Capillary pressure method was used to establish initial water saturation and to simulate gas reservoir.Two methods were used to delicately simulate gas wells which are producing water.Some wells with low and sustained producing water which were mainly affected by movable water were preferably simulated by considering saturation procedure for relative permeability curve.Some wells which were mainly affected by basal water were finely simulated by LGR to accurately describe retrograde condensation and bottom water coning in near wellbore.The findings indicate that these methods take advantage of simulating complex condensate gas reservoir,so these methods can be applied to other gas reservoirs.

Key words： Jilake Gasfield; Gas-water transitional zone; Capillary pressure; Saturation procedure; Local grid refinement; Numerical simulation

Cite this article

LI Shi-chuan, HUANG Zhao-ting, JIANG Tong-wen, NIU Yu, YANG Jian-ping, CHENG Rong-hong, XIE Wei, WANG Bin . The Numerical Simulation Study of Basal Water Condensate Gas Reservoir in Gas-Water Transition Zone：An Example from TⅡ2 Condensate Gas Reservoir in Jilake Gasfield[J]. Natural Gas Geoscience, 2014 , 25(11) : 1855 -1860 . DOI: 10.11764/j.issn.1672-1926.2014.11.1855

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