应用激电法勘查隐蔽型油砂矿——以二连盆地包楞油砂矿为例

Application of Electrical Prospecting for Subtle Oil Sands: an Exploration Case in the Baoleng Oil Sands, Erlian Basin

巴音都兰凹陷包楞地区是二连盆地油砂资源主要分布的三大地区之一,油砂层厚度大、埋藏浅、含油率高,属于隐蔽型油砂矿,为古油藏破坏型成矿模式。为了进一步搞清油砂矿的分布范围和资源规模,对包楞油砂矿进行了激电法勘探,建立了电性参数与油砂矿分布之间的对应关系,圈定了油砂分布面积,预测了油砂地质资源,并选择激电法勘查的有利区进行了钻井验证。结果表明,激电法对包楞隐蔽油砂矿勘探是有效的勘查方法。

Baoleng structure in Bayindulan depression is one of the three major areas abundant in oil sand re- source in the Erlian Basin. The oil sand in the study area is featured by large thickness, shallow depth, high oil content which is a subtle oil sand and was formed because of the paleo-reservoir destruction. In order to figure out the distribution and resource extent of the oil sand, electrical prospecting method has been adopted in Baoleng structure. After that, the corresponding relationship between electrical parameters and oil sand distribu- tion is established, the area of oil sand was determined and finally the geological oil sand resource is forecasted. The favorable area determined by electrical prospecting was tested by drilling and the result indicated the electri- cal prospecting is an effective method.