Study On Reservoir Characteristics Of Lulehe Formation In Cut - 6 Well Area Of ​​Kunbei Oilfield In Qaidam Basin

The thesis researches the clasolite reservoir bed on Lulehe formation in Qie6work area of Kunbei oil field in the Qaidam Basin.The thesis is directed by the theories and methods of sedimentary petrology,petroleum geology,mineralogy and petrology,reservoir geology and logging geology.Bases on the geologic correlation and precise drill core observation of18single wells,unites the study achievements of the slice identify,granularity analysis,sedimentary structure and log facies,the paper makes achievements in the following aspects.First,it researches the sedimentary facies style and plane distribution characters of reservoir bed in aim area,builds the sedimentary-facies succession and sedimentary facies mode of study reservoir bed.Second,it investigates the petrology characters,the physical characters,the pore texture and heterogeneous characters of study reservoir bed,and it studies the infection of sedimentary conditions,diagenesis and tectonic actions to the evolution of reservoir bed.Third,it deeply researches the types of diagenesis, diagenetic stage,and studies the main types of reservoir pore space and the cause of formation of secondly pore in reservoir bed. Depending on the evaluation standard of China National Petroleum Corporation standard combined with reservoir characteristic above to select5important influencing parameters(porosity,permeability,displacement pressure,colloidal substance content and sedimentary micro facies)to the reservior property make the evaluation of reservoir,and it points out the distribution of high quality reservoir in Lulehe formation of Qie6well area in Kunbei oil field.All of these provide the credible geological warranty to reasonable flood development at oil fields,and show the direction to the ntxt oil exploration and exploitation.