[1]雷 源,杨 明,周凤军,等.气顶油藏油气相渗曲线反演方法及应用[J].复杂油气藏,2021,14(01):69-74.[doi:10.16181/j.cnki.fzyqc.2021.01.013]
 LEI Yuan,YANG Ming,ZHOU Fengjun,et al.Inversion method of oil-gas permeability curve in gas cap reservoirand its application[J].Complex Hydrocarbon Reservoirs,2021,14(01):69-74.[doi:10.16181/j.cnki.fzyqc.2021.01.013]
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气顶油藏油气相渗曲线反演方法及应用()
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
14卷
期数:
2021年01期
页码:
69-74
栏目:
油气开发
出版日期:
2021-03-25

文章信息/Info

Title:
Inversion method of oil-gas permeability curve in gas cap reservoirand its application
作者:
雷 源杨 明周凤军王 雨李 扬
中海石油(中国)有限公司渤海石油研究院,天津 300459
Author(s):
LEI YuanYANG MingZHOU FengjunWANG YuLI Yang
Bohai Oilfield Research Institute,Tianjin Branch of CNOOC Ltd.,Tianjin 300459,China
关键词:
油气相渗曲线影响因素B-L方程遗传算法相渗反演
Keywords:
oil and gas phase permeability curve analysis of influencing factors B-L equation genetic algorithm phase permeability inversion
分类号:
TE349
DOI:
10.16181/j.cnki.fzyqc.2021.01.013
文献标志码:
A
摘要:
采油井气窜极大地影响气顶油藏的开发效果。生产实践证明,油气界面附近生产井的气窜程度及生产动态与数值模拟结果有较大差异。气顶油藏中,依据行业标准测得的相渗曲线因气饱和度端点值不准,其应用在数值模拟历史拟合与油田实际动态规律不符,影响了开发指标预测的合理性。应用数值模拟方法研究了油气相渗端点值对气顶油藏开发生产动态及最终采收率的影响。结合气顶油藏注水开发时油水和油气两相渗流规律,建立了气顶油藏水/气驱动模型,通过实际生产数据得到含气率导数与含气率的关系数据进行拟合,利用遗传算法反求得到油气相渗曲线特征参数最优解,实现了油气相渗曲线的反演。数值模拟结果表明,应用该方法得到的相渗曲线更加符合油田实际生产规律,可为该类型油藏采收率的合理确定及调整挖潜提供更为准确的参考。
Abstract:
Gas channeling of oil production wells greatly affects the development effect of gas-cap oil reservoirs. Production practice has proved that the gas channeling degree and production performance of production wells near the oil-gas interface are quite different from the results of numerical simulation. In gas-cap oil reservoirs,the relative permeability curve measured according to industry standards is inaccurate due to the endpoint value of gas saturation. Its application in numerical simulation history matching is not consistent with the actual dynamic law of the oilfield,which affects the rationality of development index prediction. The numerical simulation method is used to study the influence of oil-gas permeability endpoints on the development,production performance,and ultimate recovery of gas-cap reservoirs. Combined with the two-phase seepage law of oil-water and oil-gas during water-flooding development of gas-cap reservoirs,a water/gas driving model for gas-cap reservoirs is established,and the relationship data between gas fraction derivative and gas fraction is obtained from actual production data for fitting. The genetic algorithm inversely obtains the optimal solution of the characteristic parameters of the oil-gas permeation curve and realizes the inversion of the oil-gas permeation curve. The numerical simulation results show that the relative permeability curve obtained by applying this method is more in line with the actual production law of the oilfield,and can provide a more accurate reference for the determination of reasonable recovery efficiency and tapping potential of gas cap reservoir.

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备注/Memo

备注/Memo:
收稿日期:2020-07-09;改回日期:2020-09-15。
第一作者简介:雷源(1985—),女,高级工程师,从事油气田开发研究工作。E-mail:leiyuan@cnooc.com.cn。
基金项目:中海石油(中国)有限公司科技攻关项目“渤海双高油田挖潜关键技术研究”(YXKY-2018-TJ-04)。
更新日期/Last Update: 2021-03-25