Application of Multi - parameter Quantitative Grading Methods in Field Evaluation of Oil Layers with Low Porosity and Low Permeability

Reservoirs in deep of Anpeng oilfield have low porosity and low permeability. There are many hydrocarbon shows in logs but iheir grades are low, and hydrocarbons are light and evaporable. Parameters that can be used to evaluate reservoir fluid properties are presented based on insights of logging characteristics and the detail grading principles are determined A multi - parameter integrated evaluation chart is built by using the value of multi - parameter quantification and in combination with reservoir physical property parameters.