苏仁诺尔断裂伴生和派生裂缝垂向封闭性形成时期研究  

Research on formation period for vertical seal of fractures companied and derived by Surennuoer fault

作　　者：徐广军 崔广学 

机构地区：[1]大庆榆树林油田开发有限责任公司,黑龙江肇东151100

出　　处：《大庆石油地质与开发》2007年第4期5-8,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家973重大基础研究项目(2001CB209104)资助

摘　　要：在古裂缝面压力和古镜质体反射率恢复的基础上,对苏仁诺尔断裂伴生和派生的未完全闭合倾斜裂缝和垂直裂缝于大一段盖层内的垂向封闭性形成时期进行了恢复,结果得到未完全闭合倾斜裂缝于青元岗组沉积初期于大一段盖层内开始形成垂向封闭性,与南一段源岩大量排烃期近于同期,对于封闭南一段源岩生成排出的油气是有效的。苏仁诺尔断裂西南部伴生和派生垂直断裂缝在古近纪早期于大一段盖层内处于二氧化硅或碳酸盐第一个沉淀带内垂向封闭,之后二氧化硅或碳酸盐溶解垂向开启,目前又正进入二氧化硅或碳酸盐第二个沉淀带内形成垂向封闭。而苏仁诺尔断裂东北部伴生和派生的垂直裂缝于新近世末期至现今于大一段盖层内才开始进入二氧化硅或碳酸盐第一个沉淀带形成垂向封闭性,不仅晚于南一段源岩大量排烃期,而且封闭时间短,对于封闭南一段源岩生成排出油气的有效性差。Based on recovering of ancient pressure on fracture surface and ancient vitrinite reflectance, tormatlon period for vertical seal of unsealed tip fractures and vertical fractures was recovered. The result indicates that vertical seal of unsealed tip fractures was formed in the early of K2q. It was the same as the period of a great deal of oil-gas expelled from K1 n1 source rock. It is efficiency to seal oil-gas expelled from K1n1 source rock. Vertical seal of vertical fractures companied and derived by the Southwest of Surennuoer fault was formed in the first sedimentary zone of silica or carbonate. After it, silica or carbonate dissolved and vertical fractures opened. Vertical seal of vertical fractures was formed because it located in the second sedimentary zone of silica or carbonate. Now, vertical seal of vertical fractures companied and derived by the northeast of Surennuoer fault was formed from the end of Neogene period to now, because it began to locate in the first zone of silica or carbonate. It was not only later than the period of a great deal of oil-gas expelled from K1n1 source rock, but also its seal time is short. It is inefficiency to seal oil-gas expelled from K1n1 source rock.

关 键 词：苏仁诺尔断裂 裂缝 垂向封闭 形成时期 裂缝面压力 镜质体反射率 

分 类 号：TE121[石油与天然气工程—油气勘探]