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以南里海西缘为例,论述了深埋层含油气性的地温前提条件。指出:地温值随地层深度增大而增加;最高地温梯度值赋存于褶皱的拱顶部分;地温值反映了热流值与岩性—岩相的互依关系,会蒙脱石的粘土具有很高的导热性;石油密度升高,温度升高,总矿化度升高。为了解决深埋层的含油气远景问题,认为应加速超深部普查钻探工作。
Taking the western margin of the South Caspian Sea as an example, the preconditions for the geothermal temperature of deep buried oil and gas are discussed. It is pointed out that the geothermal value increases with the increase of the depth of the formation, the highest geothermal gradient occurs in the dome of the fold, the geothermal value reflects the interdependence of heat flow and lithology and lithofacies, High thermal conductivity; oil density increases, the temperature increases, the total salinity increased. In order to solve the deep-bedded hydrocarbon prospect, it is believed that the ultra-deep census drilling should be accelerated.