Fuyu Reservoir River Sand Seismic Recognition In Chaoyanggou Area

Conventional structural interpretation can no longer meet the needs of oil field exploration and development, searching for hidden reservoirs is more and more important. It is achieving an effective way to identify the hidden reservoir, which interpretate the rock of the stratigraphic and fine portray the reservoir characterization.The area is located in the part of the monoclinic structure,the oil and gas reservoir is mainly controled by lithology and stratigraphic trap. The sedimentary feature is fluvial deposits, it is difficult to predict the sandstone development characteristics that the variation of lithology dramatic spatial. Therefore, this article as a guide of high-resolution sequence stratigraphy, reservoir sedimentology, and other geological theory, with rely on maintain the relative amplitude, phase and waveform characteristics of high-resolution processing data. The use of multi-attribute seismic analysis techniques to identify the river sand and to predict the spatial overlay mode and planar distribution characteristics of river sand.Through analysis, the study area predicted by seismic attributes and the relationship between objects is very complex, even within the same work area, the same reservoir to predict the object corresponding to the sensitivity of different seismic attributes are different. Different work area and different reservoir predicted by the object on the sensitive seismic attributes are not identical. Seismic attribute optimization technology is an effective way to solve this problem. Therefore, this study area will make full use of property selection and clustering, intersection analysis, seismic attribute optimization method to optimize a sandstone reservoir of the most sensitive seismic attributes, for all major groups sandstone reservoir prediction.In this paper, an integrated seismic geological interpretation software, Landmark-based, supplemented by other software to carry out Fuyu oil layer of the forecasting of river sand. Based on reference standard layer (T2) wells leveling shock calibration techniques to synthetic seismograms as a bridge to determine the reservoir characteristics of seismic reflection groups. Chaoyanggou work area complete the Fuyu oil layer (F11, F12, F13, F21, F22) of the fine structure interpretation. To reservoir group borders constrained layer, high-precision three-dimensional seismic data on the proportion of biopsy to do so. Reference standards-based Layer sedimentary evolution of interpretation, according to stratigraphic sections on the changes in seismic attribute analysis of seismic facies, and thus from the perspective sedimentary evolution of sedimentary facies. In order to achieve channel sand body of earthquake prediction.In the channel sand body identification, based on the combination of sedimentary features, tectonic interpretation of the results and reservoir-forming characteristics, the use of three-dimensional visualization display technology, for favorable oil and gas-rich region was predicted.