Seismic Interpretation And Reservoir Prediction For Fuyu Reservoir Of Fang 36 Block

Guided by the regional geological knowledge, this paper according to the principle of high resolution sequence stratigraphy, based on logging data to identify the sequence base level cycle, based on well data of isochronous stratigraphic correlation framework, using the well seismic calibration, set up in the high resolution sequence stratigraphy framework, again carries on the fine structure interpretation and variable speed mapping, thus completed based on the high-resolution sequence stratigraphic framework of 3-d fine structure interpretation. Fine explained in fuyu reservoir T2, F12, F13, F21, making, end face, F32 F31 sand formation sand group of top and bottom, a total of eight geological horizon. Identification of small fault is difficult, to explain some small fault extension length, using the multi-body combined technology combined with 3 d visualization technology, fault visually reproduce the space distribution of fault. Check whether there is a small fault to miss, improve reliability and accuracy of fault interpretation. Complete structure through the analysis of the speed of mapping, this paper analyzes the aromatic 36 wellblock of fuyu oil layer structure characteristics of the interface of the main sand formation, basic features and the development of fracture trap.In developing curve standardization treatment, well-fine calibration, based on the analysis of the rock physics, by comparison with single well gamma ray and wave impedance and wave impedance curve to identify lithology and determine the wave impedance curve to better identify sandstone. According to the characteristics of fuyu reservoir is thin and discontinuous conduct geostatistical inversion, based on the optimization of the mechanical parameters of rock physics analysis results, using intends to develop sandstone prediction of wave impedance by inoue lithologic data and comparison to predict sand body wave impedance section, verify the vertical resolution of inversion results. Using rock physics analysis of sandstone and mudstone threshold value, extract the different reservoir sandstone of plane thickness distribution, and compared with drilling drilling into figure sand body prediction, the inversion results more accurate and more reasonable and reliable.On the regional sedimentary background, the first single well facies analysis, and the logging facies model, using natural gamma (GR) curve, the curve of spontaneous potential (SP), deep lateral curve (LLD) and shallow lateral curve (LLS) morphological characteristics to describe, identify the meandering river, braided channel, crevasse splay, distributary channel and logging curve characteristics of shallow lake sand sheet. Make full use of the lithology, well logging and seismic data, some basic datum sandstone thickness, analyzing characterizations of every sand formation plane distribution law of sedimentary phase, considering the regional sedimentary environment, the objective layer advantage the division of sedimentary facies.To study the structure characteristics, the depositional setting and reservoir characteristics, on the basis of combination of fuyu reservoir seismic attributes, sand body distribution, reservoir and caprock, predicting favorable areas, to further improve the fuyu oil layer of songliao basin is of great significance to the reservoir r evaluation and prediction level.