变生产指数下水平井生产动态分析  

PRODUCTION PERFORMANCE ANALYSIS ON HORIZONTAL WELLS WITH VARIABLE PRODUCTION INDEX

作　　者：周生田[1] 张琪[1] 黄炳家[1] 曲占庆[1] 

机构地区：[1]石油大学应用数学系,山东东营257061

出　　处：《石油学报》2002年第3期77-80,共4页Acta Petrolei Sinica

基　　金：国家自然科学基金资助 (597760 4 5)

摘　　要：将Dikken模型中沿整个水平井段单位长度生产指数为常数的假定推广到为分段常数的情况 ,建立了变生产指数的分段井模型 ,并对新模型提出了数值算法。用编制的软件对两个算例进行了计算 ,绘制了水平井截面流量、径向流入剖面图 ,并计算了水平井沿程压力分布。利用本模型可根据油藏的实际情况对水平井水平段射孔分布和密度等完井方式进行优化设计 ,为现场使用水平井优化动态分析提供理论根据。The hypothesis of constant specific Production Index (PI) by Dikken is extended to that piece_wise constant (variable PI) for horizontal well.A segmented well model is presented.The numerical method for this new model is proposed,and a computer program is made.The cross_sectional flow rate,influx along the horizontal well and the pressure distribution of two examples are calculated.The design for perforation distribution and density of horizontal section in horizontal well can be optimized using the present model in reference to different reservoir situations.This model may provide a theoretical foundation for analyzing the optimal performance in horizontal well.

关 键 词：变生产指数 水平井 生产动态分析 生产指数 生产压差 发段常数 石油开采 

分 类 号：TE355.6[石油与天然气工程—油气田开发工程]