Study On Reservoir Geology Of The First Member Of Taizhou Formation In Chen 3 Fault Block Of Chenbao Oilfield

The first member of Taizhou formation Chen 3 fault block grouped since 1998 gradually exposed many problems of the main formation water cut rising faster,monolayer serious breaktfrough,serious conflict among layers,poor stable effect.The main contradiction of mining is not the interlayer and inherent layers but sand body.To solve these contradictions systemly using the data of geology,well logging,testing and production in fine stratigraphic correlation,a detailed study on sedimentary microfacies,reservoir research and so on to dynamicly and staticly describe the reservoir characteristics of the first member of Taizhou formation Chen 3 fault block to further deepen the understanding of reservoir and establish fine 3 d geological model.Results and understandings are as follows(1)Carefully study reservoir subdivision contrast using multiple comparison method,layers of the Taizhou formation first reservoir have good continuity and Plane stable development.(2)Analysis single well facies useing the existing logging data,core data.Summ up that the third group of the first member of Taizhou formation belongs to fan delta sedimentary system,the first and second group of the first member of Taizhou formation belong to the normal delta sedimentary system.(3)Based on the profile phase analysis,combining with surface combination style of sand body,according to the geological thinking,under the guidance of depositional model,the profilre configurations of the sand body are drawn reasonably.(4)Study on logging multi-well reservoir evaluation,reservoir physical property parameters(porosity,permeability,saturation,shale content)are determined.Barrier and interlayer features and distribution of the third group in the first member of Taizhou formation are learned.And then heterogeneity research of them are researched emphasizly.Layer and plane heterogeneity of the third group of the the first member of Taizhou formation is strong,but vertical heterogeneity is strong.(5)Study the reservoir types and characteristics of pore and throat and each layer Physical properties variation of single well in the process of development combining with the interpretation logging results.Physical properties of Late development becom poor.(6)Establish 3rd phased attribute model,better solved the relationship with the Angle of strata with the overlying strata,so as to better understand of residual oil and find the next exploration direction.