A Study On The Distribution Of Sedimentary Microfacies Of Heidimiao Oil Layer In The South Of Daqing Placanticline

This paper studies the location Yu Daqing southern changyuan, layer to the black temple reservoir, high reservoir research predecessors on Portugal, and for the black temple reservoir is relatively small, gas source is not clear, conducting channel is not clear, and preservation conditions are not clear and so on to determine the next step of drilling direction is very adverse. Black temple reservoir shallow gas accumulation regularity of understanding is not clear, so need to carry out the research in the black temple reservoir patterns shallow gas accumulation.In this paper, based on core, logging and seismic data, the application of high resolution sequence stratigraphy theory, such as the daqing changyuan black emperor temple sedimentary microfacies in the reservoir distribution and favorable reservoir prediction is studied, research shows that the black temple reservoir for the southwest of the north provenance drainage branch, accused of gentle slope delta sedimentary system, belongs to the typical river HI1 lack in northern small layers in the study area is caused due to the late tectonic uplift; For delta front subfacies depositional system in the study area, the regional development of microfacies types are mainly underwater distributary channel, mouth bar, far sand dam microfacies, such as the vertical evolution of sedimentary microfacies are transitional, former delta subfacies is excessive to the outside of the delta front subfacies frontal region then transition to the interior and exterior front delta front subfacies frontal zones within the transition zone- delta front subfacies, reflect the vertical gradually shrinking process; Black temple reservoir sand body distribution overall a north and south, the north south thin thickness has, on both sides of things with thin sand body. Pore permeability value distribution also showed a trend of small north to south, and the thickness of sand body distribution of roughly the same as a whole. Distribution and physical property of reservoir quality main sedimentary facies control, the second is the influence of diagenesis; The south of daqing changyuan black emperor temple reservoir H ? favorable target for Portugal's west- 2 oil group and Portugal on the west- 3 and new zhao- 3 three traps, H ? favorable target for Portugal's west- 2 oil group, pt west- 3 and new zhao- 2 three traps.