苏北盆地海安凹陷阜宁组泰州组方沸石透辉石角岩储层特征  

ANALCIME DIOPSIDE HORNSTONE RESERVOIR CHARACTERISTICS,TAIZHOU GROUP AND FUNING GROUP IN HAIAN DEPRESSION,SUBEI BASIN

作　　者：孙春友[1] 

机构地区：[1]江苏石油勘探局地质科学研究院

出　　处：《石油勘探与开发》1991年第2期89-94,共6页Petroleum Exploration and Development

摘　　要：苏北盆地海安凹陷下第三系及上白垩统泰州组地层,发育广泛的浅层侵入型辉绿岩。紧邻岩体的泥质岩围岩经烘烤变质形成泥质岩烘烤交质带,经鉴定为低级变质的方沸石透辉石角岩。利用岩心、薄片、测井等分析手段进行储层特征研究,证实该角岩具良好的孔隙性和一定的渗透能力,其储集空间以溶蚀孔洞为主,裂缝次之。由于此类角岩多与生油岩共生,其勘探前景不容忽视。Shallow diabase intruded occurs generally in the stratigraphy in the Pale- ogene and Cretaceous Taizhou groups in Haian depression,Subei basin,and there is a set of hornstone formed by bake metamorphism around this intru- sive body,this hornstone is determined to be analcime diopside hornstone. The informations from core analysis,thin sections and logs indicate that sol- ution rugs is the main,and fissure is the second storage space.The hornst- one reservoir is characterized by high porosity and low permeability.It is easy to trap oil and gas to form effective reservoir,because it is near the oil source rock,thus,it should be paid attention to in our petroleum exploration.

关 键 词：盆地 坳陷 储集层 变质岩 

分 类 号：P618.130.2[天文地球—矿床学]