稀井低勘探程度区块岩性圈闭预测方法分析——以准噶尔盆地阜东斜坡带石树沟群为例

在深入剖析阜东斜坡带岩性圈闭形成条件和分布规律的基础上,提出了适合于钻井稀少的低勘探程度区块的岩性圈闭预测方法.该方法主要包括如下5个要素:(1)层位标定技术(实现井震联合,确保层序地层学分析的可靠性和精度);(2)层序地层学分析法(确定岩性圈闭的有利发育层位及发育类型);(3)沉积相分析法(确定岩性圈闭的有利发育相带及具体位置);(4)叠后高分辨率处理技术(确保岩性圈闭识别的准确性);(5)波阻抗反演技术(岩性圈闭预测的核心技术).应用该方法对阜东斜坡带进行岩性圈闭预测取得了较好的效果.

Prediction method of the lithologic traps in the low exploration-degree area with sparse wells: taking Shishugou Group on East Fukang Slope of Zhungeer Basin as an example

Based on the analyses of the formation conditions and the distribution law of the lithologic traps,the prediction method of the lithologic traps in low exploration-degree district with sparse wells are put forward.The method includes 5 elements:⑴ horizon scaling technique(combinig seismic data with well logging data to ensure the reliability and the precision of sequence stratigraphic analysis);⑵ sequence stratigraphic analysis(determining the favorable horizons and the types of the lithologic traps);⑶ sedimentary facies analysis(determining the favorable facies and the specific location of the lithologic traps);⑷ high-resolution processing technique for post-stack seismic data(to ensure the precision of the prediction of the lithologic traps);⑸ wave impedance inversion(the core technique for the prediction of lithologic traps).The applications of the method in East Fukang Slope obtain satisfied results.