Fine Reservoir Characterization Of Shen84-An12 Block

The article is theoretically based on high-resolution sequence stratigraphy, reservoir geology, reservoir sedimentology,reservoir well logging geology, exploration geology and exploration seismology etc. On the basis of logging data, combined with seismic, logging and core data, the paper applied both rich dynamic and static data which provided by dense well spacing in maturing field during later stage of exploitation as well as sedimentary process analysis, well logging analysis method on the sedimentary unit subdivision and comparison, reservoir sedimentary and reservoir heterogeneity charaterization of delimitation sand channel bar of fault-anticlinal oil-bearing structure 84-An 12 block in block sag Daming tun sag structural zone in Liaohe field. 4 three-level sequence were classified in formation identification of S3 interval, the unifying high-resolution sequence formation grid was established and 146 time-formation unit were classified. Within time-formation unit, the study for sedimentary pattern of regional fan-delta was determined through phase identification and log facies study. Detailed analysis and study were carried on inner part of sedimentary system of regional fan-delta. Seven kinds of logging microfacies pattern were summarized. Through using of sequence analysis, the paper point out that sequence formation in the studied zone was controlled by structural factors, ascending and descending movement of base level further impose influence on seismology. Based on"four properties", a suit of reservoir parameter interpretation model and water-flooded interpretation method which be applicable in the study of reservoir geology within researching area, oil and water identification chart and intraformational bed deduction chart were plotted; Low limit for classifying net pay thickness was determined; Through intensive study for both macrocosmis and microcosmic features of reservoir, the paper Fig.d out that reservoir has the characteristic of heterogeneous property within interlayer, plane and in situ; Through comprehensive and systemic characterization of the reservoir, the made a reservoir evaluation which classifying reservoir ofâ… ,â…¡,â…¢andâ…£kinds. The oil-bearing sand is mainly inâ…¢reservoir. In accordance with comprehensive evaluation point value in well site, 20 chorograms for level surface comprehensive evaluation and prediction in sand groups were worked out so as to provide optimization basis for further exploitation strategy.