广域电磁法在赣南某盆地油气勘探中的应用

Application of wide field electromagnetic method to the hydrocarbon exploration in a basin of South Jiangxi

赣南某盆地版石组地层烃源岩丰富、总有机碳含量高,具有非常好的油气勘探前景。但由于该盆地多为红层覆盖、地面条件复杂、深部火山岩分布广泛,导致地震资料品质较低,目的层埋深、厚度等信息不清。将广域电磁法(WFEM)应用于该盆地油气勘探,揭示了研究区内富有机质页岩层为低阻,厘清了研究区地层展布、厚度、埋深等关键信息,落实了主要目的层版石组分布范围及参数井井位,为油气资源评价和选区工作提供了依据。

With rich hydrocarbon source rocks and high total organic carbon content in a basin of South Jiangxi,Banshi formation has good prospects of hydrocarbon exploration.However due to complex surface and subsurface conditions such as red beds and deep volcanics,only poor seismic data are acquired.The target depth and thickness are unknown.To solve these problems,the wide field electromagnetic method is applied to investigate the hydrocarbon resource in the basin.According to the results of the application,organic-rich material shale shows low resistivity and the target distribution,thickness and depth are figured out.Also the Banshi formation distribution is mapped and well parameters are proposed,which provide references for hydrocarbon assessment and the proposal of future prospects.