摘要
环玛湖凹陷油气资源丰富,三叠系百口泉组、二叠系乌尔禾组是近几年准噶尔盆地重点油气勘探领域。由于受该地区侏罗系煤层强反射的屏蔽作用,其下覆地层存在严重的多次波干扰,严重影响三叠系和二叠系地震资料的成像质量和地质层位解释。这里利用环玛湖凹陷的典型井和地震资料,建立合理的地质模型,正演分析多次波发育特征,然后总结归类了产生多次波主要源(煤层)的分布规律,并提出了利用煤层作为多次波路径模拟的压制方法,较好地解决了环玛湖凹陷层间多次波对勘探主力目的层二叠系成像质量的影响。
he Mahu depression is rich in oil and gas resources.The Triassic BaiKouQuan formation and the permian WuErHe formation are considered to be the important oil and gas reservoirs in the Junggar basin in recent years.Due to the shielding effect of the Jurassic coal formation in the area,there are severe multiple interference in the underlying layer.This seriously affects the imaging quality and geological horizon interpretation of the Triassic and Permian seismic data.In this paper,we use the typical wells and seismic data of the Mahu depression to establish a reasonable geological model,to analyze the characteristics of multiple,and then summarize the distribution law of the main source(coal)that generates multiple.We then finally propose a suppressing multiple method that uses the coal formation to simulate multiple propagation paths.This method can better solve the influence of multiple in Mahu depression on the imaging quality of the exploration target layer.
作者
马军茂
李静
毛海波
潘龙
丁国荣
李忠效
MA Junmao;LI Jing;MAO Haibo;PAN Long;DING Guorong;LI Zhongxiao(Institute of Geophysics, Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Urumqi 830013, China)
出处
《物探化探计算技术》
CAS
2020年第5期576-581,共6页
Computing Techniques For Geophysical and Geochemical Exploration
基金
“十三·五”国家油气重大科技专项(2016ZX05003-005)。
关键词
环玛湖凹陷
二叠系
多次波
煤层
正演
Mahu depression
permian
multiple
Jurassic coal formation
forward
作者简介
第一作者:马军茂(1981-),男,硕士,高级工程师,主要从事地震资料处理工作,E-mail:majunm@petrochina.com.cn。
