Abstract：It has been experimentally shown that hydrocarbon trap prediction (including the lateral and vertical properties，boundary，high position，development monitor and so on)can be desirably achieved by using the borehole-ground direct current resistivity method with linearelectrode configuration located in a cased or uncased deep hole when there are favourable conditions:the proper depth of sand structural hydrocarbon trap，the gentle variation of surrounding rock resistance，and smooth landform.
