| 数值模拟比值法计算水驱气藏体积波及系数 |
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| 引用本文： | 杨海,李闽,严东寅,王刚. 数值模拟比值法计算水驱气藏体积波及系数[J]. 断块油气田, 2012, 19(1): 103-105 |
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| 作者姓名： | 杨海 李闽 严东寅 王刚 |
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| 作者单位： | 1.西南石油大学油气藏地质与开发工程国家重点实验室,四川成都,610500;2.中国石油塔里木油田公司开发事业部,新疆库尔勒,841000;3.中国石油新疆油田公司井下作业公司,新疆克拉玛依,834000 |
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| 基金项目： | 国家重点实验室国际合作项目“The Pressure Dependence of Permeability of Tight Reservoir Rocks”(PLN0901)资助 |
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| 摘 要： | 水驱气藏体积波及系数不仅可以反映当前的水驱体积波及情况,而且在确定气藏最终采收率中有着重要的地位,同时也是判断气田开发状况和调整效果的重要参数.文中在考虑地层流体及孔隙体积影响的前提下推导出了被波及网格含气饱和度上限值R的计算公式,并利用数值模拟的方法通过判定水侵前后网格含气饱和度的比值与R的差值来确定气藏被波及网格数,从而计算水驱气藏体积波及系数.该方法消除了在生产过程中流体及固体状态的变化对网格气体饱和度所带来的影响,并引用数值模拟实例来说明比值法的应用.
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| 关 键 词： | 数值模拟 体积波及系数 采收率 水驱气藏 |
Calculation of volumetric sweep efficiency for water-drive gas reservoir based on numerical simulation ratio method |
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| Yang Hai,Li Min,Yan Dongyin,Wang Gang. Calculation of volumetric sweep efficiency for water-drive gas reservoir based on numerical simulation ratio method[J]. Fault-Block Oil & Gas Field, 2012, 19(1): 103-105 |
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| Authors: | Yang Hai Li Min Yan Dongyin Wang Gang |
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| Affiliation: | (l.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China; 2.Development Department, Tarim Oilfield Company, PetroChina, Korla 841000, China; 3.Downhole Operation Company, Xinjiang Oilfield Company, PetroChina, Karamay 834000, China) |
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| Abstract: | The volumetric sweep efficiency of water-drive gas reservoir not only can reflect the current swept condition, but also can play a very important role in gas recovery calculation. Meanwhile, it can be applied to detect the production behaviors and check the stimulation operations. Considering the expansion of reservoir fluids and the decrease of pore vohune, this paper derives the upperlimited value of gas saturation R of swept blocks, which is used to calculate the difference between R and the ratio of gas saturation hefore water influx to gas saturation after influx. The difference is applied to determine the number of swept blocks of water-drive gas reservoir by which the volumetric sweep efficiency can be obtained. It is viable to eliminate the influence on the gas saturation which caused by tte change of fluids and rocks. This paper takes the numerical simulation example to introduce the application of the ratio method. |
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| Keywords: | numerical simulation volumetric sweep efficiency recovery efficiency water-drive gas reservoir |
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