改进的水驱特征曲线计算地质储量方法  

Modified method for calculating the reserve of reservoir with gas cap using displacement characteristic curves

作　　者：康晓东[1] 李相方[1] 郝伟[2] 

机构地区：[1]石油大学石油天然气工程学院,北京昌平102249 [2]长江大学地球科学系,湖北荆州434023

出　　处：《大庆石油地质与开发》2004年第3期35-37,共3页Petroleum Geology & Oilfield Development in Daqing

摘　　要：水驱特征曲线法的实用与简捷,使其得到了快速发展和广泛应用。水驱曲线主要用途之一是预测水驱油藏可采储量与地质储量。但由于该方法是通过数据回归的经验方法,缺乏一定的理论基础,加之基础数据单一,未考虑油田静态系数,使用范围受限,用该方法计算水驱带气顶油藏地质储量时,由于气顶的膨胀作用,与无气顶的油藏相比,累积产油量增加而累积产水量减少,表现在水驱特征曲线的直线段斜率减小。为此,本文在分析水驱特征曲线预测气顶油藏地质储量问题的基础上,推导出考虑气顶影响的新的储量计算公式,实例计算表明,结果更准确。The displacement characteristic curves method is used widely for its convenience.One of its functions is to predict the recoverable reserves and OOIP.The question of the method is given when to predict the reserves of reservoirs with gas cap.And an improved formulation considering the effect of gas cap size is presented in this paper.Case application validates its accuracy.

关 键 词：水驱特征曲线 气顶油藏 地质储量 

分 类 号：TE15[石油与天然气工程—油气勘探]