DIVA技术在Tenere地区的应用
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摘要
鉴于Tenere地区的地震速度在总体上表现为随深度增加而逐渐增加,但在局部有强烈的速度减小现象,本文将DIVA技术应用于Tenere地区的油气检测。对该区4个井区5个层段开展双临界DIVA技术检测,表明此法有其独到之处,尤其在岩性横向变化不大的条件下,应用效果更好。此法的精度主要取决于速度谱拾取精度,层位解释精度及背景层速度选取精度。
In Tenere area,the seismic velocity generally shows the increasing trend with depth,but only in small local region in the area the velocity decreases very rapidly,therefore the DIVA technique was applied in oil&gas detection in the area. The double critical DIVA technique detection was conducted for 5 geological intervals on 4 well blocks,indicating the uniqueness of this technique. The application effect is even better,especially under the conditions of small lateral changes in lithology. The accuracy of the technique mainly depends on the velocity spectrum picking-up accuracy,horizon interpretation accuracy and the background velocity picking-up accuracy.
In Tenere area,the seismic velocity generally shows the increasing trend with depth,but only in small local region in the area the velocity decreases very rapidly,therefore the DIVA technique was applied in oil&gas detection in the area. The double critical DIVA technique detection was conducted for 5 geological intervals on 4 well blocks,indicating the uniqueness of this technique. The application effect is even better,especially under the conditions of small lateral changes in lithology. The accuracy of the technique mainly depends on the velocity spectrum picking-up accuracy,horizon interpretation accuracy and the background velocity picking-up accuracy.
引文
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[3]朱红涛,陈开远等.DIVA技术在莺歌海盆地中的应用.石油地球物理勘探,2004,39(3):319～321
[4]刘震,曾宪斌等.双临界DIVA的地震岩性预测机理及应用.石油地球物理勘探,1996,31(2):205～210
[5]代建春,刘震.差异层间速度分析在三维地震储层物性评价中的应用.石油学报,1994,15(增刊):82～87
[2]解吉高,马小刚.差异层速度分析在台格庙地区的应用.勘探地球物理进展,2006,29(2):130～134
[3]朱红涛,陈开远等.DIVA技术在莺歌海盆地中的应用.石油地球物理勘探,2004,39(3):319～321
[4]刘震,曾宪斌等.双临界DIVA的地震岩性预测机理及应用.石油地球物理勘探,1996,31(2):205～210
[5]代建春,刘震.差异层间速度分析在三维地震储层物性评价中的应用.石油学报,1994,15(增刊):82～87
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