The Well Logging Reservoir Evaluation Of Baikouquan Formation Of Triassic In Mabei Slope Oilfield

In Xinjiang Oilfield,the Baikouquan group of Triassic,in the north slope of Manas lake,is one of the main formations for oil exploration and one of important battlefields to ensure oilfield production.Studies have shown that the Baikouquan group is the formation of fan delta sedimentary,glutenite reservoirs superimposed fan body in vertically,both the change of lithology and the thickness in horizontality are big.To find a suitable log evaluation method for the glutenite reservoir will have an important significance for reservoir exploration.First of all,it is necessary to carry out a series of regional geological survey about the north slope area of Manas lake,including of geological structure,stratigraphic features and sedimentary characteristics.Then we made a analysis of the oil and water logging response characteristics,found out the sensitivity parameters of reservoir fluid,used the method of intersection and nuclear magnetic resonance log to classificate the reservoir.On the basis of logging data preprocessing,it is convenient to establish the appropriate logging interpretation models,such as porosity,permeability and oil saturation interpretation models.Combined with data from a variety of sources to determine the reservoir effective thickness,a classification criteria of reservoir quality comes out by the end of the progress,which is combined with lithology,physical property,pore microscopic characteristics and the minimum limit of reservoirs.Compared with the actual production,there is a very high coincidence rate of log interpretation for the study,the research has important implications and application value for the reservoir log evaluation.