Research On Changchun Ridge Tectonic Zone In The Reservoir Characteristics

Using high resolution sequence stratigraphy method，in the system under the control ofthe field of study area springs for four for the detailed stratigraphic division and correlation,five of sequence b is divided, on the107block for the division of strata four springs andcontrast,and the key young layer are further divided out of the time unit.In the core phase and based on the study of the log facies, determined the ChangchunLing sedimentary facies zone for delta depositional model; Identify the three mainsedimentary and7of the main and sedimentary microfacies type, determined the oil and gasaccumulation degree is high in the delta front for underwater distributary channel micro phase;to study the sedimentary microfacies profile and plane characteristics, and sums up the smalllayers of13of the sedimentary environment evolution characteristicsIn the study area,all well logging curves for the standardized treatment, to study fourresearch in sexual relations, established in Changchun ridge springs section of the fourreservoir porosity, permeability and saturation of the logging interpretation model, make surethe judgment standard of oil and water layer.Make sure the Changchun ridge tectonic belt main development four diagenesis type,there two main pore type are developmented, three kinds of pore throat compatibility type, forthe sensitivity analysis and the reservoir heterogeneity analysis.Through the laws of hydrocarbon reservoir summary, determine the main geologicalperiod of oil and gas generation is the deposition of the MingShui, Namely earlytertiary.Qing shan kou source rock has larger birth, hydrocarbon expulsion ability.This waspart of the reservoir have been destroyed, but Qingshankou formation has good closecondition, make the most of this reservoir can be preserved. In Chang chun Ling inclined beltin Daqing oil province, tectonic location is high gas reservoir,tectonic location is lowreservoir, and into band distribution. Therefore, easy to accept three cause depression of theoil and gas source traps are more likely to accumulation, north slope with oil-bearing anticlinethan south slope of good.