利用斯通利波评价裂缝性致密砂岩储层的渗透性  

Evaluating the Permeability of Fractured Tight Sandstone Reservoirs with Stoneley Wave

作　　者：杨帆[1] 章成广[1] 范姗姗[1] 肖承文[2] 陈伟中[2] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北荆州434023 [2]中石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000

出　　处：《石油天然气学报》2012年第4期88-92,167,共5页Journal of Oil and Gas Technology

基　　金：国家油气重大专项(2011ZX05020-008)

摘　　要：渗透率是储层评价中的重要参数。在裂缝大量发育的致密砂岩储层中,准确计算地层的渗透率对储层的产能提升具有重要的意义,而常规的方法很难满足这一要求。以渗透性地层的测井声波传播理论为基础,研究了利用斯通利波计算渗透率在致密砂岩储层中的应用。在经波场分离、合成斯通利波波形、计算斯通利波的频率偏移和时间延迟后得到了地层的渗透率。在现场应用中取得了很好的效果,证实了该方法的有效性,从而为油气田开发方案的合理编制提供了可靠的基础资料。Permeability was an important parameter in reservoir evaluation.It had great significance of calculating permeability accurately in large fractured tight sandstone reservoirs,however conventional method was difficult to meet the requirement.Based on the theory of the logging acoustic wave propagation in permeability reservoirs,the application of Stoneley wave in calculating permeability in tight sandstone reservoir was studied.Formation permeability was derived through three procedures: wave separation,wave form,calculation of the center frequency shift and travel time delay in Stoneley wave.Good results are achieved in field applications,it is proven that the method is effective and it provides reliable basic data for a reasonable design of development plan in the oilfields.

关 键 词：致密砂岩 斯通利波 渗透率 波场分离 

分 类 号：P618.13[天文地球—矿床学]