Papers by Author: Shan Ze Zhang

Abstract: Abstract. A is a typical low permeable oilfield in surrounding region of west daqing, the major target layer is Saertu formation,which posseses characteristics of reservoir thin, poor physical property and more containing mud and calcium, in addition, conventional logging respons characteristic is not obvious in flooded layer, leading to distinguish it more difficult. To solve this problem, the paper researches it from the mechanism of electric conduction, and classified establishes explaining plate about flooded layer, at the same time taking into account logging boundedness, which makes use of results about logging and dynamic flooded analysis to replenish and correct logging explaining result in flooded layer. We establish synthetical explaining method. Using this method, the coincidence rate of flooded layer explaining result achieves 75%.

Abstract: Abstract. Variation function is an important tool that can characterize the spatial correlation of geological variable quantitatively in geo-statistics. In the random inversion process, for different types of blocks and oil fields, choosing the appropriate function type and the corresponding model parameters, to improve the accuracy of inversion results is particularly important. By taking Gu83 block of GuLong oil field as an example, this article analyses common variation functions such as Gaussian, Spherical, Expo and Gen-Expo method and the influence of random inversion results under different variable distance parameters. From the experimental results, the inversion prediction precision will be higher in this block under the following situations: Expo variation function, horizontal variable distance is 3000 meters and vertical variable distance is 3 meters.