瓦市气田是个多产储层的气田，从上至下有香溪群香三段、嘉陵江组、阳新统三个气层段。该气田油气储存具有深部多浅部少，而中间微的分布特点；构造以深部发育，而浅部不发育为特征；化探异常特征是周边弱而中间强。依据油气储存与构造和化探异常三者关系，剖析了烃类异常与油气埋藏深度的内在联系，认为该区环带晕异常是浅层气藏分布范围的响应，长条状异常则反映深部气藏的主要富集地段。 The Wazhou gas field is a gas field with many productive reservoirs. There are three gas layers in the Xiangxi Group, Xiangling Group, Jialingjiang Formation and Yangxin System from top to bottom. The oil and gas reservoirs in the gas field are characterized by a few shallow depths in the middle part and a slight distribution in the middle part. The structure is characterized by deep development and shallow shallow development. The unusual feature of geochemical exploration is that the periphery is weak and strong in the middle. According to the relationship between hydrocarbon storage and structure and geochemical anomalies, the inherent relationship between hydrocarbon anomalies and oil-gas burial depth is analyzed. It is concluded that the anomalous halo of the area is a response to the distribution of shallow gas reservoirs, while the long anomalies reflect the deep The main accumulation of gas fields lots.