川北阆中—南部地区裂缝与孔洞特征及其相互关系  

On the Characteristics of Pore and Fracture in Nanbu Area of Langzhong,Northern Sichuan Basin

作　　者：邵晓州[1] 秦启荣[1] 苏培东[1] 范晓丽[2] 吴鲜[1] 余川[1] 

机构地区：[1]西南石油大学,成都610500 [2]中原油田勘探开发科学研究院,濮阳457001

出　　处：《重庆科技学院学报（自然科学版）》2011年第6期15-18,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：四川阆中—南部地区裂缝类型主要有成岩缝与构造缝,其低角度斜交缝和水平缝两种结构缝发育最好。千一段溶蚀孔洞一般以圆、椭圆形为主,洞径为2~10mm。大安寨段溶蚀孔洞较发育,孔径主要为0~1mm,溶蚀孔洞大部分被方解石充填。裂缝是形成次生孔洞的重要因素,溶蚀孔洞与成岩期裂缝关系不甚密切,溶蚀孔洞沿构造裂缝发育现象较普遍。Based on the analysis of cores,cast thin section,scanning electron microscope,well drilling and logging,the main fractures types are found to be diagenetic fractures and tectonic fractures,in Nanbu area of Langzhong,northern Sichuan Basin.Among them,the low angle oblique crossing fracture and horizontal fracture are mostly developed.The diameters of solution fissure are mainly 2~10mm in the forms of roundness or oval in first member of Qianfoya formation.The solution fissures are mostly filled by calcite in Da＇anzhai member.Fracture is an important factor of the secondary holes,and solution pores and diagenetic cracks are not linked,in addition,the solution pores are always developed in the trace of structural cracks.

关 键 词：裂缝 溶蚀 孔洞 阆中 川北 

分 类 号：TE122[石油与天然气工程—油气勘探]