Discussion On The Genesis Of 2 Reservoirs In M1 Area In Ordos Basin

This thesis is based on petroleum geology,structural geology,sedimentary petrology,logging geology and other related discipline theory as the instruction,comprehensive utilization of the study area logging data,drilling data,test data such as core analysis test data,and its adjacent area on the M1 aera hydrocarbon source rock,reservoir and cap rocks,migration condition and reservoir preservation condition of research.Based on the initial and present situation of reservoir production,the main controlling factors of reservoir formation are analyzed to guide the further exploration and development.M1 area is located in the central and southern ordos basin,its main exploration horizon for 2 reservoir group,through stratigraphic classification and correlation,Chang 2 formation can be divided into three reservoir group,respectively,2¹,2² and 2³,in which 2² can be divided into 2^2-1,2^2-2,2^2-3,the 2³ be divided into 2^3-1,2^3-2.Through the study,it can be seen that the 2^2-1 is the important cover layer in the region,the average thickness of 9.39m,and the remaining layers are the reservoir.The source rock is mainly from the reservoir group.Good structure-lithologic traps and lithologic traps are the main places to preserve oil and gas.The reservoir has the characteristics of low porosity,low permeability and high water contentWe know that the sand body and sedimentary facies are the main controlling factors of reservoir formation,and the nose structure is the key to its genesis,and the reasonable spatial configuration relationship is the reason for the accumulation of oil and gas in this region.