“平点反射”在濮城深层天然气滚动勘探中的应用
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摘要
介绍了一个利用地震资料的“平点反射”预测并勘探深层天然气的实例。在东濮凹陷中央隆起带濮城构造濮 67块三维地震资料分析中 ,发现主测线 758附近的地震剖面在濮 67断层下盘的构造高部位 ( Es4)有较明显的“平点反射”;结合该地区钻井、录井显示进行综合研究认为 ,有可能为气、水界面形成的 ,据此预测该部位是天然气勘探的有利目标区。钻探获得了好的效果 ,新探明 Es4段含气面积 1 .7k m2 ,天然气地质储量 3.65× 1 0 8m3。
A case study is introduced to predict and explore deep gas in Dongpu depression with “flat spot reflection” of the seismic data In the three dimensional seismic analysis of block Pu 67 in Pucheng structure in the central uplift of Dongpu depression, seismic profile near the main line 758 has a significant flat spot reflection on high position (Es 4) of the lower structure of block Pu 67 An integrated study by using the drilling and logging data in this area shows that the flat spot reflection may be formed by a gas water interface, thus predicting the position is a favorable target for gas exploration Gas bearing areas of 1 7 km 2 and natural gas reserve of 3 65×10 8 m 3 are proved by drilling
A case study is introduced to predict and explore deep gas in Dongpu depression with “flat spot reflection” of the seismic data In the three dimensional seismic analysis of block Pu 67 in Pucheng structure in the central uplift of Dongpu depression, seismic profile near the main line 758 has a significant flat spot reflection on high position (Es 4) of the lower structure of block Pu 67 An integrated study by using the drilling and logging data in this area shows that the flat spot reflection may be formed by a gas water interface, thus predicting the position is a favorable target for gas exploration Gas bearing areas of 1 7 km 2 and natural gas reserve of 3 65×10 8 m 3 are proved by drilling
引文
[1]华东石油学院岩矿教研室 .沉积岩石学 [M] .北京 :石油工业出版社 ,1982 .
[2 ]徐怀大 .地震地层学解释基础 [M] .武汉 :中国地质大学出版社 ,1990 .
[2 ]徐怀大 .地震地层学解释基础 [M] .武汉 :中国地质大学出版社 ,1990 .
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