塔河油田四区奥陶系裂缝特征及其成因机制研究  

Characteristics and formation mechanism of fissures in Ordovician strata of No.4 block,the Tahe Oilfield

作　　者：高玉飞 钟建华[2,3] 艾合买提江[2] 黄磊[4] 侯峰[5] 李旭[6] 王明鹏[7] 

机构地区：[1]中海石油研究中心,北京100027 [2]中国石油大学,山东东营257061 [3]中国科学院广州地球化学研究所,广东广州510640 [4]新疆油田有限责任公司准东采油厂,克拉玛依新疆834000 [5]新疆油田公司陆梁油田作业区,新疆克拉玛依834000 [6]中石化胜利油田胜利采油厂,山东东营257061 [7]中石化胜利油田孤岛采油厂,山东东营257061

出　　处：《中国地质》2009年第6期1257-1267,共11页Geology in China

基　　金：国家重点基础研究发展计划(973计划)项目(2006CB202401)资助

摘　　要：塔河油田四区以缝洞型油藏为主,裂缝是该区主要的油气疏导体系和储集空间,通过20余口井的岩心、薄片观察,结合FMI等各种分析化验资料,研究了裂缝的倾角、走向、长度、体积密度等几何参数,分析了裂缝的充填情况。在此基础上分析了控制裂缝形成的主要因素,包括构造作用、岩性、先期断裂、岩层结构等;探讨了裂缝形成的期次,将裂缝划分为四期I.前加里东期,II.加里东期、III.海西早期、IV.海西晚期—喜山期;进一步分析了裂缝形成的动力学过程。The fissure-pore carbonate reservoirs constitute the dominant Ordovician reservoirs in No.4 block of the Tahe Oilfield.The fissures make up the main connection channels and accumulating space.Based on core and thin section observations for more than 20 wells in combination with FMI and analysis of a variety of test data,this paper studied a certain characteristic parameters of reservoir fissures,such as the ranges,strikes,lengths and bulk densities of the fissures,and analyzed their filling situation.On such a basis,the controlling factors were analyzed,which included structure,lithology,former faulting,rock structure and the stages for the formation of the fissures.The fissures are assigned to four stage：I-Pre-Caledonian period,II-Caledonian period,III-Early Hercynian period,IV-Late Hercynian-Himalayan period.The genetic mechanism of the fissures are also discussed.

关 键 词：塔河四区 裂缝特征 体积密度 主控因素 

分 类 号：P618.130.2[天文地球—矿床学]