%0 Journal Article
%T Volcanic rock distribution and gas abundance regularity in Xujiaweizi faulted depression, Songliao basin<br>松辽盆地北部徐家围子断陷火山岩分布及天然气富集规律
%A YANG Hui
%A ZHANG Yan
%A ZOU Cai-Neng
%A WEN Bai-Hong
%A LI Ming
%A <br>杨辉
%A 张研
%A 邹才能
%A 文百红
%A 李明
%J 地球物理学报
%D 2006
%I 
%X By a newly proposed band filter, second derivative by multiple upward and downward continuation, which utilizes continuation height and iteration number to modulate frequency and enhance target layer information, the aeromagnetic data of Xujiaweizi depression, the most highly studied area in Songliao Basin, are processed to extract volcanic anomalies. From a comparison with drilling data, the extracted aeromagnetic anomalies correspond well to the distribution of volcanic rocks. According to the aeromagnetic anomalies in combination with drilling and seismic data the plan distribution of three volcanic formations is predicted. It is shown that aeromagnetic gradient belts near or connected to hydrocarbon source are gas-abundant zones with well-developed volcanic reservoirs. This point of view will play an important guiding role in gas exploration deployment in Songliao Basin, and even benefit gas exploration in other areas in China.
%K Aeromagnetic anomaly
%K Gradient belt
%K Volcanic rock
%K Reservoir
%K Natural gas
%K Abundance regularity
%K Xujiaweizi
%K Songliao Basin<br>航磁异常
%K 梯度带
%K 火山岩
%K 储层
%K 天然气
%K 富集规律
%K 徐家围子
%K 松辽盆地
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=11AE4E2D3A8B5574&yid=37904DC365DD7266&vid=2A3781E88AB1776F&iid=E158A972A605785F&sid=BE14F47B38DC36BB&eid=CF89D3C02791C82E&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=29&reference_num=37