Study On Reservoir Interpretation By The Method Of Combination Of Well And Seismic In North Block Of The Daqing Lamadian Oilfield

Not having lunched three-dimensional seismic acquisition since 2007, fault combination primarily based on the well data to explanation and implementation in Lamadian Oilfield. Although the high vertical resolution, the well data still has serious shortage between the horizontal well explanation, fault combination need to be further improved. The reservoir was mainly fluvial sediment, and reservoir sand bodies varies more frequently, it is difficult to accurately describe distribution characteristics of various types of sand bodies only relying on the single well well data. In particular, it can not accurately predict distribution characteristics of single channel sand sedimentary microfacies. Both fully using of high horizontal resolution of the seismic data and the well data and combining the reservoir development characteristics of to find the combination of well and seismic interpretation method appropriate to Lamadian Oilfield.Basing on the basic characteristics of the reservoir of the Lamadian Oilfield and using seismic data and well data. It has standardized the layer using synthetic seismograms record in characteristics interpretation of structural faults. And it carried out the well intermittent loss and geologic strata thickness varies between the processes of well comparison guided by the theories of the sequence stratigraphy, sedimentology and petroleum geology by relying on the technology of three-dimensional seismic interpretation, high-resolution seismic data inversion and sedimentary facies analysis. Using a number of seismic coherence analysis techniques to identify fault. Through closely integrate well and seismic interpretation to complete the fault combination in the northern of oil fields. It reduces the human impact and improves interpretation accuracy and fault structures. It conducted study on inversion method In reservoir description aspect. Application frequency compensation principle and electric resistance rate range bad to re-draw curves for co-simulation inversion of well and seismic by acoustic curve as a carrier. It effective identification I and II class sandstone and effective thickness. Using seismic inversion data to make up for lack of information between wells. Combined with drilling information on the continuity of sand between the distribution of well and sands geometry and the boundary between well location and sand body thickness distribution to accord a certain judicious combination of sedimentary mode and projections joint depicting the sand microfacies distribution and improve understanding of sand body between wells.In short, based on the combination of well and seismic, the paper has completed the reservoir interpretation in the north block of the oilfield and carried out 22 faults and added 3 new faults and implemented 66 microstructures. It has drawn sedimentary face maps of 26 sedimentary units and explored a set of well and seismic reservoir interpretation method. It takes new breakthroughs in the study on fine structure and reservoir characterization and sedimentary microfacies. It showed that this method has apparent effect in excavating potential and adjustment.