收稿日期: 2005-03-30
修回日期: 2005-07-11
网络出版日期: 2005-10-20
基金资助
中国石油天然气股份公司勘探与生产分公司2004年度科研项目“地球物理综合信息直接识别储层与油气检测方法研究”(编号:0401143)资助.
SEISMIC CONVERTED WAVE INTERPRETATION FOR SULIGE GAS FIELD,ORDOS BASIN
Received date: 2005-03-30
Revised date: 2005-07-11
Online published: 2005-10-20
郭晓龙;欧阳永林;耿晶;许晶; . 鄂尔多斯盆地苏里格气田地震转换波解释[J]. 天然气地球科学, 2005 , 16(5) : 650 -653 . DOI: 10.11764/j.issn.1672-1926.2005.05.650
Drilling in Sulige gas field shows that the distribution law of high-energy waterway in this field is the most important element to control effective reservoirdistribution. Sedimentary coarse sandstone of high-energy water way has highershear velocity, which has clear contrast to the shear velocity of shale, and makes the converted wave profile to show higher reflection amplitude. This is the most important basement to interpret gas reservoir with multiple and multicomponent.Utilizing model in this article proves that the converted wave reflection coefficient for gas-bearing sand and shale is about 4 times to the reflection coefficient for fine sand and shale. The model also shows that the longitudinal wave and converted wave have 180° phase difference at the area of Sulige. The phase for the converted wave profile should be consistent with that for the longitudinal wave profile during interpreting. Thus the consistent degree between the interpreting result and well is better.
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