具有补给气的异常高压有水凝析气藏物质平衡方程建立及应用

吴克柳; 李相方; 卢巍; 徐兵祥; 胡素明

doi:10.3799/dqkx.2014.020

Volume 39 Issue 2

Feb. 2014

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Article Navigation > Earth Science > 2014 > 39(2): 210-220

Wu Keliu, Li Xiangfang, Lu Wei, Xu Bingxiang, Hu Suming, 2014. Application and Derivation of Material Balance Equation for Abnormally Pressured Gas Condensate Reservoirs with Gas Recharge Capacity and Water Influx. Earth Science, 39(2): 210-220. doi: 10.3799/dqkx.2014.020

Citation:

Wu Keliu, Li Xiangfang, Lu Wei, Xu Bingxiang, Hu Suming, 2014. Application and Derivation of Material Balance Equation for Abnormally Pressured Gas Condensate Reservoirs with Gas Recharge Capacity and Water Influx. Earth Science, 39(2): 210-220. doi: 10.3799/dqkx.2014.020

Citation:

Wu Keliu, Li Xiangfang, Lu Wei, Xu Bingxiang, Hu Suming, 2014. Application and Derivation of Material Balance Equation for Abnormally Pressured Gas Condensate Reservoirs with Gas Recharge Capacity and Water Influx. Earth Science, 39(2): 210-220. doi: 10.3799/dqkx.2014.020

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Application and Derivation of Material Balance Equation for Abnormally Pressured Gas Condensate Reservoirs with Gas Recharge Capacity and Water Influx

doi: 10.3799/dqkx.2014.020

1.
Key Laboratory of Petroleum Engineering of Ministry of Education, China University of Petroleum, Beijing 102249, China
2.
Chemical and Petroleum Engineering, University of Calgary, Alberta, T2N1N4, Canada
3.
PetroChina Changqing Oilfield Company, Xi'an 710021, China
4.
Research Institute of Petroleum Exploration and Development, Tarim Oilfield Company, PetroChina, Kurly 841000, China

Received Date: 2013-04-28
Publish Date: 2014-02-01

Abstract

Abstract

Material balance equation is an effective approach to estimate the OGIP, water influx, and gas recharge capacity in condensate gas reservoirs. The condensate gas reservoir with gas recharge capacity, abnormally high pressure, and edge and bottom water-drive is one of the most complicated reservoirs which include the features of condensate gas, pressure-dependent parameters and water influx. In this study, a new material balance equation for this reservoir was derived which considering retrograde condensation, the expansion of rock, bounded water and condensate oil, the phase change of vapor and dissolved gas, water and gas influx. The theories of Haiming Distance and relevance is used to analyze the mean square error of drive index, deviation index between pseudo pressure ratio and recovery, and generalized objective function. Based on the analysis of relative similarity degree and closeness coefficient, we chose the optimization scheme, and calculated the OGIP, gas recharge, water influx, and the aquifer volume. Based on the case study in condensate gas reservoir in Northwest China, a calculated reserve is 66.80×10⁸ m³. We investigated and analyzed the parameters sensitivity by calculating the errors in the assumption of those parameters not included. The error of reserve estimation is up to 91.77% if oil condensate is not considered. Other parameters also have some effect such as water influx, the expansion and gas recharge. Respectively, the errors are 75.75%, 23.95% and 12.87%. The effect of gas escape from the dissolution and vapor is not significant but cannot be neglected, the errors are 2.69% of escaped gas and 1.65% of vapor.
- abnormal high pressure,
- gas condensate reservoir,
- material balance equation,
- water influx,
- retrograde condensation,
- original gas in place (OGIP),
- petroleum geology

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References(41)

References

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Application and Derivation of Material Balance Equation for Abnormally Pressured Gas Condensate Reservoirs with Gas Recharge Capacity and Water Influx

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