The Research Of Carbonate Reservoir Characteristics In Gudao Buried Hill Of Jiyang Depression Island

This thesis takes "the research of carbonate reservoir characteristics in Gudaoburied Hill of Jiyang Depression Island" as its topic. It establishes the formmechanism and pattern of fractured reservoir system by means of a large number oftechniques, such as, core observation, identification sheet, logging, etc and completesthe research area deposition, diagenesis and fractured system. At the same time, itclearly defines the relationship between reservoir space systems and sedimentaryfacies, diagenesis as well as structure, which reveals the vertical distribution law ofthe fractured reservoir.The study result of the research area's sedimentary facies, diagenesis andtectonic shows that the district better reservoir facies with the margin reef facies,platform edge shallow facies etc; Favorable diagenesis types include dolomitization,paleokarst role. Structure plays an important role in the reservoir area of optimizationspaces, especially for the poor condition of the matrix properties in the research area.Fault activity is no doubt the key to forming a good reservoir.Using a variety of methods to test systematically the Gudao Buffed Hill LowerPaleozoic carbonate rock matrix porosity and permeability, we conclude that resultsindicate on the poor performance of carbonate matrix with the features of low porosityand permeability and there is little connection with depth. While a natural connectionbetween the reservoir distribution and the development of fractured cavity.Through fractured reservoir of the FMI log identification and characterization ofconventional studies and with the reservoir of the fractured core observation, weestablish a study area of the fractured reservoir logging identifier, and complete thedevelopment of fractured reservoir of electricity from the lithology of the Unity. Theresults show lower Paleozoic strata general development of high-angle joints, the bestreservoir is the Badou formation,the upper and the lower Majiagou formation, while,the Yeli-Liangjiashan formation and the Fengshan formation take the second place.