Seismic Reservoir Prediction Of Saertu Formation Of Nanerxi

South area in western daqing sal figure oilfield in daqing changyuan sal figure oilfield anticlinal structural axis, the north south area three rows, south to south area three rows, west oil-water boundary within pt II group, east to highway, the hub of the anticline toward north east to the north, the east wing steep anticline west wings.After four hundred and fifty years of development, on the whole has entered the high recovery degree, the "combination" of high water cut development stage, but the residual recoverable reserves still is very big, is characterized by "overall highly fragmented, with rich local" pattern.This paper in order to SaNa south west development zone as the research object, with 3D seismic data as the carrier, combined with the advantage of the existing dense well pattern, to develop information of 3D seismic data, conduct joint fine structure interpretation of well and seismic reservoir prediction research.Purpose layer reservoir types are mainly channel sand body, bar, sheet sand, with transverse phase change quickly, have a poor reservoir property, characteristics of thin reservoir development, according to these characteristics, this paper before the attribute extraction and seismic inversion for the wave group characteristic analysis and the forward model analysis, judging by the method of forward in combination with the actual earthquake records reservoir reflection potter character, analysis its sensitive attribute parameters, properties of amplitude, frequency, phase properties comparison research, take advantage of the most can reflect the features of reservoir properties. Sensitivity analysis is carried out curve and curve reconstruction experiments, to reflect the lithology information sp, gamma curve, the resistivity curve linear to refactor, nonlinear, determine the best combination scheme, then to reconstruct curve made to the ideal of the inversion results of seismic inversion.On the basis of the theory in fine structure interpretation and application of the earthquake reconstruction inversion in reservoir prediction, and combining the property analysis of sedimentary microfacies study, so as to reflect the present stage of fine geological model is established, through the seismic attributes, seismic inversion and logging information of the integrated use of predict interwell sand body development situation, the determination of interwell sand body connectivity situation can effectively determine the cause of the effect of polymer injection is not obvious and accurate effective adjustment scheme is put forward.Forecast development and deployment, and on the basis of the actual reservoir performance, to determine the optimum well spacing.Application of the results of the study, released late for guiding oilfield open Wells, drilling efficiency well and big displacement well, solve the injection-production contradictions between the Wells and further movable remaining oil is of great guiding significance and broad prospect of promotion.