横波各向异性在碳酸盐岩裂缝性储层评价中的应用  

Application of Shear Wave Anisotropy to Evaluation of Fractured Carbonate Reservoir

作　　者：赵军[1] 蒲万丽[1] 张永忠[1] 李维彦[2] 何宗斌[2] 

机构地区：[1]塔里木油田分公司,新疆库尔勒841000 [2]长江大学,湖北荆洲434023

出　　处：《测井技术》2005年第2期118-120,共3页Well Logging Technology

基　　金：石油天然气总公司"九.五"科技攻关项目<塔里木盆地测井解释技术研究>之推广应用课题"全波列测井解释处理系统推广应用"(编号2000070549)的部分研究成果

摘　　要：裂缝性地层一般都具有各向异性的特征。从裂缝性地层所具有的各向异性出发,根据横波在各向异性地层中传播时所导致的分裂现象,利用偶极横波成像测井资料所提取的快慢横波信息来指示地层的各向异性大小,而裂缝的密度、张开度等与裂缝的各向异性有密切的关系,从而达到识别裂缝及其有效性的目的。通过在塔里木油田轮古地区碳酸盐岩裂缝性储层中的实际应用,证实了利用横波的各向异性特征可以定性地分析裂缝的有效性,最终为寻找高产稳产井及试油决策提供一个很好的技术手段。Fractures in carbonate reservoir are import an t oil & gas storage space and permeable channel. The fractural effectiveness is always a difficult problem in carbonate reservoir logging evaluation. Generall y, fractured formation has characteristic of anisotropy. According to the phen omenon of the fast and slow shear wave which are divided by anisotropy formation where shear wave pass through, the degree of anisotropy can be showed by the f ast and slow wave information from DSI image data. Since the density and gaping degree of fractures are closely related with the degree of anisotropy, so the effectiveness of fractures can be evaluated. Application of shear wave ansiotro py in fractured reservoir in Lun Gu region in Tarim basin proved that the fractu re effectiveness can be qualitatively analysed using the features of shear wave division, thereby providing a good technological method for finding high produc tion wells and oil testing decision.

关 键 词：碳酸盐岩储层 横波 各向异性 裂缝 储层评价 

分 类 号：P588.245[天文地球—岩石学] P631.14[天文地球—地质学]