|
|
|
| Application of seismic technology to predicting the delta sand body of Dongying Formation in Chengdao Eastern Slope of Shandong Province |
| CHEN Yan, ZHANG Mingzhen, LUO Xia, SHI Xiaoguang |
| Shengli Geophysical Research Institute, Dongying 257000, China |
|
|
|
|
Abstract In recent years, more attentions have been paid to the Dongying Formation of Chengdao area for its tremendous exploration potential in Shengli oilfield. The sediments are dominated by fluvial and delta sedimentary system, but the seismic reflection characteristics of sand bodies are complex; the lateral variation is large; and it is difficult to identify and evaluate the reservoir. To descript the reservoirs more effective, the high resolution sequence stratigraphic framework is established according to the isochronous formation framework. There are distinct differences between the lacustrine deposition and delta deposition in sediment characteristics and seismic response. Based on the cores, geological and geophysical logging data, and combined with the macroscopic characteristics of seismic attribution and seismic facies, the general range of delta deposition could be separated approximately from lacustrine deposition. The seismic reflection is relatively weak in delta area and the difference value of seismic velocity between sandstone and mudstone is small. The technology of waveform analysis integrated with 6 parameters is used to distinguish and describe the type of waveform, and twelve kinds of seismic waveform which corresponding to 4 primary sedimentary micro-facies are determined. At last, the method of neural network is used successfully to identify the sedimentary micro-facies.
|
|
Received: 19 May 2015
|
|
|
|
|
|
[1] 印兴耀,韩文功,李振春,等.地震技术新进展[M].东营:
中国石油大学出版社,2006:90-95.
[2] 贺振华,蒲勇,熊晓军,等.川东北长兴—飞仙关组礁滩储层的三维地震识别[J].物探化探计算技术,2009,31(1):1-5.
[3] 刘云,贺振华,汪瑞良,等.基于地震相分析的孔隙度预测[J].物探化探计算技术,2010,32(4):359-364.
[4] 于红枫,王英民,李雪.Stratimagic波形地震相分析在层序地层岩性分析中的应用[J].煤田地质与勘探,2006,34(1):64-66.
[5] 李雷涛,肖秋红.地震波形分类技术在地震相分析中的应用——以清溪场地区为例[J].天然气技术,2010,4(5):4-7.
[6] 刘文岭,李刚,夏海英.地震波形特征分析定量描述方法[J].大庆石油地质与开发,1999,18(2):44-45.
[7] 王玉学,丛玉梅,黄见,等.地震波形分类技术在河道预测中的应用[J].资源与产业,2006,8(2):71-74.
[8] 李治,邓国振,罗凤芝.地震道波形分类方法在储层预测中的应用——以二连盆地白音查干凹陷为例[J].中国海上油气地质,2002,16(5):358-360. |
|
|
|
2016, Vol. 3 
