致密砂岩气层识别技术在大北地区的应用  

Application of Compacted Sandstone Gas-zone Identification Technology in Dabei Region

作　　者：信毅[1] 吴述林[2] 陈伟中[1] 章成广[2] 

机构地区：[1]中石油塔里木油田分公司勘探开发研究院,新疆库尔勒841000 [2]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

出　　处：《石油天然气学报》2012年第6期90-94,167,共5页Journal of Oil and Gas Technology

基　　金：国家油气重大专项(2011ZX05020-008);油气资源与探测国家重点实验室开放课题项目(00480080)

摘　　要：理论和试验研究表明,声波速度比与含气饱和度有密切的关系,通过试验关系式获得的含气饱和度可作为气层指示。由于利用声波全波资料以声波能量为基础很难定量地识别气层,重点介绍了利用纵横波速度比和流体压缩系数识别油气层的方法,以及利用含气饱和度指示、流体压缩系数、时差比和岩石压缩比综合解释气层的方法。该方法在大北地区致密砂岩气层识别中取得了较好的应用效果。Theoretical and experimental studies showed that acoustic velocity ratio was closely related with gas saturation,gas saturation obtained by using experimental correlation could be used as a gas-zone indicator.Acoustic full wave data based on the acoustic energy was difficult to quantitatively identify the gas reservoir.The method of P-wave and S-wave velocity ratio indication of oil and gas interpretation and the fluid compressibility coefficient are emphatically introduced for more accurately identifying the reservoir,gas saturation indication and fluid compressibility factor,time lag ratio and the rock compression ratio.It obtains good application result for identifying the compact sandstone reservoirs in Dabei Region.

关 键 词：纵横波速度比 流体压缩系数 油气层识别 致密砂岩气层 

分 类 号：P618.13[天文地球—矿床学]