裂缝型低渗油藏主、侧向井渗透率推算  

Permeability calculation of principal stress directional and lateral wells in fractured low permeability reservoir

作　　者：卢丽[1] 陈小凡[1] 夏彪[1] 乐平[1] 易红[2] 李晨溪[3] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]中国石油长庆油田公司第二采油厂,甘肃庆阳745100 [3]重庆科技学院,重庆401331

出　　处：《断块油气田》2013年第2期207-209,共3页Fault-Block Oil & Gas Field

基　　金："十二五"国家科技重大专项"水驱过程岩石渗流物理特征动态变化实验研究"(2011ZX05010-002)

摘　　要：低渗油藏一般都发育不同程度的天然微裂缝,这些裂缝直接或间接地与水力压裂缝沟通,造成主、侧向井平均渗透率的差异。目前还没有一种能准确推算低渗油藏主、侧向井间等效渗透率的方法。文中在低渗透油藏注水见效时间预测公式的基础上,根据实际动态生产资料,反推计算主、侧向井的渗透率。利用西峰油田长8储层M油藏现场动态资料进行实例验证,证明该方法在现场应用中简单可行。该方法为地质建模、油藏数值模拟、渗流分析技术,以及井排距调整方案等提供了更加准确的数据基础。Low permeability reservoirs generally develop different degree of natural micro-fYactures, which directly or indirectly link up with the hydraulic fracture, causing the different average permeability of principal stress directional and lateral wells. There is still not any method to accurately calculate the equivalent permeability of principal stress direetional and lateral wells in low permeability reservoirs. This paper uses the respnnding time of waterflooding to extrapolate the permeability of principal stress directional and lateral wells based on the predication tormula for the responding time of waterflooding and field dynamic production data. The dynamic data lot M oil reservoir of Chang 8 in Xifeng Oilfield show that this method is simple and feasible in field application,which can provide more accurate data hase tor geological modeling, reservoir numerical simulation, percolation analysis and well rnw spacing adjustment.

关 键 词：注水见效时间 主向井 侧向井 等效渗透率 低渗透油藏 

分 类 号：TE348[石油与天然气工程—油气田开发工程]