水平井致密油储层近井和远井可压性研究

第４１卷　第４期

２０１７年８月

测　井　技　术WEL L LOGGING T EC HNOLOGY Vol ．４１　No ．４Aug ２０１７

基金项目：国家自然科学基金（４１３７４１２４）

第一作者：刘坤，男，１９８９年生，博士研究生，从事地球物理测井和非常规油气测井评价等方面的研究。E ‐mail ：upc ＿kun ＠outlook ．com 文章编号：１００４‐１３３８（２０１７）０４‐０４４３‐０５水平井致密油储层近井和远井可压性研究

刘坤１，孙建孟１，陈心宇２

（１．中国石油大学（华东）地球科学与技术学院，山东青岛　２６６５８０；

２．中国石油川庆钻探国际工程公司，四川成都　６１００５１）

摘要：基于测井资料讨论了近井脆性指数和近井可压性的求取方法。利用压裂施工曲线，反求岩石力学参数，得到远井脆性指数；从破裂耗能的角度评价地层压裂的难易程度，利用远井脆性指数和压裂射孔段单簇裂缝破裂耗能指数构建远井可压性指数。将２种方法应用于１口致密油水平井的可压性评价中，从近井和远井脆性指数、近井和远井可压性指数分别与造缝体积（V SR ）的关系可知，脆性指数反映储层改造体积有限，可压性指数更能反映储层改造体积情况；相较近井可压性，远井可压性考虑了压裂段整个地层的情况，与储层改造体积关系更好。同时近井和远井可压性指数与储层产能关系较好，这对致密油水平井储层进行压前预测和压后评估具有重要意义。

关键词：致密油储层；近井脆性指数；远井脆性指数；近井可压性；远井可压性

中图分类号：P ６３１畅８４ 文献标识码：A

Doi ：１０．１６４８９／j ．issn ．１００４‐１３３８．２０１７．０４．０１２

Near ‐well and Far ‐well Fracturing Performance of Tight Oil Reservoirs in Horizontal Wells

LIU Kun １，SUN Jianmeng １，CHEN Xinyu ２

（１．School of Geosciences ，China U niversity of Petroleum ，Qingdao ，Shandong ２６６５８０，China ；

２．CN PC Chuanqing Drilling Engineering Company Limited International L T D ．，Chengdu ，Sichuan ６１００５１，China ）Abstract ：Based on the logging data ，the methods of estimating the near ‐well brittleness index and the near ‐well fracturing performance index are discussed ．And the fracturing construction curves are applied to reverse the rock mechanics parameters to obtain the far ‐well brittleness index ，meanw hile from the view of formation fracture energy to evaluate the ease of formation fracturing and then using brittleness index and single cluster perforation fracture energy index to construct far ‐well fracturing performance index ．T he two methods are applied to evaluate the fracturing performance of tight oil horizontal well ；From the relationship of near ‐well and far ‐well brittleness index ，fracturing performance index to V SR ，the brittleness index is limited to reflect the V SR ，and the fracturing performance is better to reflect the V SR ．Comparing to the near ‐well fracturing performance index ，the far ‐well fracturing performance has a better relationship with the V SR ，w hich considers the entire strata of the fracturing section ．And the near ‐well and far ‐well fracturing performance is in good agreement with the productivity ，w hich show s the importance of evaluating the near ‐well and far ‐well fracturing performance ，and it ’s very important for predicting fracturing and post ‐fracturing performance of tight oil reservoirs ．Keywords ：tight oil reservoir ；near ‐well brittleness index ；far ‐well brittleness index ；near ‐well fracturing performance ；far ‐well fracturing performance

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