茂兴地区嫩江组二段滑塌扇的发现及其石油地质意义  

DISCOVERY AND ITS PETROLEUM GEOLOGICAL SIGNIFICANCE OF THE SLUMP FANS IN NENJIANG NO. 2 MEMBER OF MAOXING REGION

作　　者：金明玉[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油地质与开发》2011年第4期1-4,共4页Petroleum Geology & Oilfield Development in Daqing

基　　金：国家重点基础研究发展计划“973”项目（2006CB701400）资助.

摘　　要：应用三维地震资料及钻井地质剖面，在松辽盆地茂兴地区嫩江组二段发现了滑塌扇复合体。滑塌扇复合体总体呈纺锤形，长轴北北东走向，总波及面积约61.5 km2，最大厚度55 m，平均厚度39 m，砂岩最大厚度7 m，平均厚度3.8 m。复合体由7个单体组成，垂向交叉叠置，平面镶嵌连片。剖面上向源方向厚，末端薄，厚度具有跳跃式波状变化特征；平面上具有弧形波状的形态特征，古坡度超过0.006°，古水深超过30 m，滑移距离在2～10 km。首次在嫩江组发现滑塌浊积扇，部分扇体具有含油性，其中HT6号扇体在构造最低处试油获工业油流，证实滑塌扇在松辽盆地具有很好的勘探潜力。With the help of 3D seismic data and drilling geological sections, the slump fan complex is discovered in Nenjiang No. 2 Member of Maoxing region of Songliao Basin. In general, the complex takes the form of spindle with NNE strike for its long axis. Its totally affected area is about 61.5 km^2 , the maximum thickness is 55 m, the average thickness is 39m; the maximum sandstone thickness is 7 m, the average thickness is 3.8 m. The complex is made up of 7 mono-bodies which are vertically crossed ＆ superimposed and moreover horizontally mosaicked. In the sections, the fans deposit thick towards the source area while their ends are rather thin, so the thickness possesses skip and ripple characteristics. In horizontal, there are arc-like and wavy morphological characteristics. The palaeo-slope exceeds 0. 006°, the palaeo-water is more than 30 m deep, the slip distance is within 2 - 10 km. The slump turbidite fans are first discovered in Nenjiang Formation and part of them are oil-bearing. Among them, HT6 fan body is located in the structure low and moreover owns commercial oil by oil test, so it is proven that the slump fans have much better exploration potentials in Songliao Basin.

关 键 词：松辽盆地 嫩江组 滑塌扇 地质意义 

分 类 号：TE122.3[石油与天然气工程—油气勘探]