底水油藏水平井势分布及水锥研究  

Studies of the potential distribution and water coning of horizontal well in a bottom-water driven oil reservoir

作　　者：时宇[1,2] 杨正明[2] 张训华[2] 黄延章[2] 

机构地区：[1]中国科学院渗流流体力学研究所,河北廊坊065007 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065007

出　　处：《大庆石油地质与开发》2008年第6期72-75,共4页Petroleum Geology & Oilfield Development in Daqing

摘　　要：水平井对于底水油藏开发具有重要作用。由于底水锥进问题定解条件的非线性,使得该类水锥问题难于进行解析求解。因此应用Newman乘积原理,在求得底水油藏点源势函数的基础上,将水平井视为由点源组成的线源,利用数值积分,建立了水平井势函数计算公式,并进行了实例计算,结果表明该式结果与真实数据更为接近、可靠性更高;同时对影响见水时间的水平段长度、避水高度以及油层非均质性等因素进行了计算分析,结果表明水平井合理避水高度应在0.6～0.7,水平段越长、纵向渗透率越低则见水时间越长。Horizontal well has played important role in bottom-water oil reservoir development. Because of the non-linear feature of solution-making condition for bottom-water coning problem, analytic solution is difficult to seek for this kind of problem. Just considering the above fact, by using the Newman rule （Newman＇ s Product Principle） , on the basis of the obtained point-source potential function of bottom-water oil reservoir, the horizontal well is regarded as line source combined by point sources and moreover the calculating formula of horizontal well＇ s potential function is established with the help of numerical integration. The result shows that the solution of the above formula is closer and reliable to the actual data; at the meantime the following factors of influencing horizontal length of breakthrough time, water avoidance height, oil layer＇s heterogeneity and so forth have been calculated and analyzed. The resuhs prove that the reasonable avoidance height should be 0.6--4）. 7 ; the longer horizontal well interval and the lower vertical permeability, the longer water breakthrough time is.

关 键 词：底水油藏 水平井 势分布 水锥 

分 类 号：TE355.6[石油与天然气工程—油气田开发工程]