Prediction And Application Of Tight Oil Reservoir Of Fuyu Oil Layer In Zhaoyuan Oilfield

With the development of oil field exploration and development, the exploration and development of tight oil reservoir has become the key point of oil field exploration and development. Accurate reservoir analysis and brittle dessert identification has also become a major problem for reservoir geologists and the earth physicist. This paper is aimed at the single sand body of Fuyu oil layer in the west of China. The reservoir characteristic is the distribution of scattered, vertical upper layer of reservoir development difference is bigger, horizontal change is faster.And the logging interpretation results are applied to reservoir prediction. The fast optimization of the favorable area of the tight oil reservoir is realized, and the prediction of favorable sandstone is finally achieved.In this paper, firstly, the structural characteristics, fault characteristics, physical properties, lithology and development of oil sands are studied. Understanding the formation conditions of tight oil, clear dessert enrichment area. The data were analyzed and processed by seismic data. Compared with the contiguous processing and preserving amplitude processing of seismic profiles and found merging processing local section is not clear, and in the preserved amplitude processing profile breakpoint clear, the fault footwall event at the flat, broken wave phenomenon has been well improved. Then, according to the data volume of different data, the accuracy of the test and the actual drilling data is analyzed, and the level of the coincidence rate of the drilling data is analyzed.In order to accurately implement reservoir spatial distribution characteristics,for the information of the area and by the well drilling in sandstone thickness of multi attributes cross analysis,and selects the sandstone thickness and agreement rate is high RMS attribute. Then, the two step inversion method, which is combined with the reconstruction wave impedance inversion and the geological statistics,is used to predict the reservoir sandstone.Finally, through the analysis of the well profile of the five wells, the details of the reconstructed wave impedance inversion profile are more clear,and the description of the lithology is more accurate.However, the sparse pulse inversion results have good correlation with seismic data, and have a good reflection of the large sets of sandstone, but this can not meet the demand for thin layer sand body prediction in the horizontal well deployment. In this paper, we use the high vertical resolution of the geological statistics inversion, based on the post stack data of reservoir sandstone prediction and pre stack data based on the reservoir "brittle" prediction. The final quantitative describe the small layer sand body size, combined with inversion to extract the attribute graph analysis showed that the sand body development scale, the overall trend of North North East to the banded characteristics significantly, prediction and inversion results are reasonable, the realization of the more refined reservoir prediction. Finally, the prediction results are applied to the static deployment of horizontal wells, and 9 horizontal wells are deployed for different oil bearing formations.