Reservoir Characteristics And Gas - Bearing Detection Of Badaowan Formation In Baka Oilfield

Based on the theories and practices of seismic geology, petroleum geology, reservoir, structural geology, sedimentary petrology, logginggeology, sequencestratigraphy, oil field geology and so on, combined with well drilling data, well logging data, testing data,formation testing data and various kinds of analysis data, we have systematically investigated the stratigraphic characteristics, structural feature, sedimentary facies feature and reservoir characteristics of the lower JurassicBadaowan formation and finally we obtained the following conclusions:By the collection and analysis of previous research, first of all, according to theBadaowan group of Ba Ka area with low porosity and low permeability reservoir, taking petroleum geology and petrology theory as the basis and:petrologic characteristics, physical property, pore structure, rock characteristics, heterogeneity characteristics, petrophysical lower Badaowanreservoir characteristics for research of, as well as deep analysis of the reservoir "4-property relationship ", analysis of various kinds of logging responses of reservoirs that is based on classification of reservoir, we established a logging interpretation model for target layer. Second, by seismic stratigraphy, geophysical logging geology and modern technology, we analyze the prestack and poststack data propertyof target stratum including elastic properties, so as to compare the results of seismic interpretation with that of logging.Combined the former research, pre-stack and post-stack attribute analysis with the logging results, we conclude that J1b layer containing fluid reservoir is developed but scattered, and two fist-class area, one second-class area and two third-class area are forecastaccording to the characteristic of regional attached growth.