塔中地区上奥陶统礁滩复合体储层地震预测技术  

Seismic reservoir prediction of reef-flat complexes in the Upper Ordovician,Tazhong area

作　　者：杨海军[1] 胡太平[2] 于红枫[2] 李新生[2] 赵宽志[2] 董立胜[2] 

机构地区：[1]中国地质大学资源学院,湖北武汉430074 [2]中国石油天然气股份有限公司塔里木油田分公司勘探开发研究院,新疆库尔勒841000

出　　处：《石油与天然气地质》2008年第2期230-236,251,共8页Oil & Gas Geology

摘　　要：塔中I号坡折带位于塔中古隆起北斜坡大型碳酸盐岩台地北缘，呈北西-南东走向，台缘坡折带长220km，宽8-18km，发育上奥陶统大型礁滩复合体，油气藏埋深3700-7200m。该带地表沙丘起伏，地下结构复杂，地震剖面品质差，奥陶系碳酸盐岩储层埋深大，非均质性强，储层控制因素复杂。通过地质、测井、岩心和试油等资料分析了奥陶系礁滩体不同类型储层的地球物理响应特征，总结出适合干该带碳酸盐岩礁滩体储层预测的方法，对上奥陶统礁滩复合体发育分布规律进行了精细描述，在礁滩体复合体的勘探中取得了很好的勘探成果。Tazhong-I slopebreak zone is located at the north margin of the large carbonate platform developed on the northern slope of Tazhong paleo-uplift. The northwest trending slope break is 220 km long and 8 - 18 km wide. It developed large reef-flat complexes in the Upper Ordovician and harbors giant condensate gas reservoirs with burial depth of 3700 -7200 m. High-quality seismic profiles are hard to acquire here because of the undu-late dunes at the surface and complex structures underground. And the accuracy of lateral reservoir prediction is low due to the deep burial depth of the Ordovician carbonate reservoirs, high heterogenity, and multiple control- ling factors upon reservoir development. However, a set of methods have been developed and applied successfully to the prediction of the reef-flat carbonate reservoirs through analyzing geophysical responses to various types of Ordovician reef-shoal complex reservoirs based on geologic log, core, and test data. The application of these methods has accelerated the exploration of large condensate gas reservoirs in the slope break zone.

关 键 词：测井响应 地震响应 储层预测 井位优选 坡折带 礁滩复合体 塔中地区 

分 类 号：TE122.2[石油与天然气工程—油气勘探]