Fractal Feature about the Micro-structure in Sandstone Reservoir:Taking the Paleogene Shahejie Formation in Shengtuo Oilfield as an Example
Received date: 2013-05-14
Revised date: 2013-07-17
Online published: 2013-10-10
The study of rock micro-structure is very difficult at present.The micro-structure of the reservoir controls not only the micro-character of the reservoir but also the macro-character.Using the fractal theory and the data of mercury injection and thin-section from 3 wells about 40 samples in Shengtuo,the micro-pore structure characteristics of the reservoir was studied.Results indicate that the micro-structure shows fractal features to some extent.We measured the fractal dimension and built up the quantitative relationship of physical property and the micro-structure parameters with fractal dimension.We found they have good correlation and correlation of delta-front is better than delta-plain.Thus it can be seen that the fractal dimension can reflect the complexity of the pore-space synthetically and it can be used to do comparative evaluation for different reservoirs.
Key words: Fractal; Pore-structure; Reservoir; Capillary pressure
XU Shou-yu,WANG Shu-ping . Fractal Feature about the Micro-structure in Sandstone Reservoir:Taking the Paleogene Shahejie Formation in Shengtuo Oilfield as an Example[J]. Natural Gas Geoscience, 2013 , 24(5) : 886 -893 . DOI: 10.11764/j.issn.1672-1926.2013.05.886
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