Features of Gravity Anomalies and Oil-Gas Distribution Rules in Central and Western Sichuan Basin, China

In order to explore the rules between gravity anomalies and oil-gas distribution characteristics in central western Sichuan Basin, we divided tectonic unit basin on base of analysis anomaly characteristics, studied correlation oil–gas local study area. The results show that variation range Bouguer field interior is relatively small, southern part shows a clear high zone, with gradual gradient zones all around periphery. abnormal value residual an obvious high–value belt north west, arranged alternately low north–east direction. units Basin can be into five regions, based field, namely, Central uplift West depressional East steep South North slow zone. Combined geological data processing results, oil gas fields certain correlated zone transition They are major areas gas.