中、上扬子地区上奥陶-下志留统页岩气开发水平井井眼轨迹优化  

Shale Gas Horizontal Well Development Trajectory Optimization In the Middle and Upper Yangtze Region Upper Ordovician-Lower Silurian Shale

作　　者：王红岩[1,2,3] 刘玉章[1,2,3] 赵群[1,2,3] 严星明[1,2] 付海峰[1,2] 王南[1,2,3] 

机构地区：[1]中国石油勘探开发研究院廊坊分院,河北廊坊065007 [2]国家能源页岩气研发(实验)中心,河北廊坊065007 [3]中国石油非常规油气重点实验室,河北廊坊065007

出　　处：《油气井测试》2015年第6期7-10,73,共4页Well Testing

基　　金：国家重点基础研究发展计划(973)项目"中国南方海相页岩气高效开发的基础研究"(2013CB228000);国家"十二五"重大专项"页岩气勘探开发关键技术"项目(2011ZX05018)内容

摘　　要：经对我国中、上扬子地区上奥陶统五峰组-下志留统龙马溪组富有机质页岩段的沉积序列、含气性和可改造性等有关参数分析,将其划分为四个小层,并确定富有机质页岩的1号和2号小层物性最好,为最优储层。采用我国唯一的大型全三维水力压裂物理模拟实验系统对不同小层的岩样进行压裂评价实验分析,得出底部页岩脆性矿物含量高、天然弱面发育,压裂裂缝延伸受层理影响,形成复杂裂缝网络。结合我国已完钻页岩气水平井产气效果分析,确定中、上扬子地区五峰-龙马溪组页岩气开发水平井轨迹选择应在底部20 m左右优质页岩段。Based on parameters analysis of Longmaxi formation sedimentary sequences,gas content,possibilities of stimulation of organic-rich shale,in the middle and upper Yangtze region upper Ordovician- Lower Silurian shale,the formation can be divided into four sub-layers and the 1st and the 2nd physical layers with rich organic shale are defined as optimal reservoir,which has the best properties among the others. The only large-scale full three-dimensional hydraulic fracturing physical simulation system will be used to process the fracturing analysis by using different rock samples from different layers. The result shows the bottom shale have plenty of brittle mineral,weak surfaces developed. It is easy to form a complex fracture network. Combined the Chinese horizontal well production analysis,it can be defined that in the middle and upper Yangtze region upper Ordovician-lower Silurian shale,the horizontal well trajectory should be selected around 20 meters of high quality shale in the bottom.

关 键 词：页岩气 水平井 井眼轨迹 储层改造 

分 类 号：TE122[石油与天然气工程—油气勘探]