Lithofacies simulation based on multi-point geostatistics multiple data joint constraints
Luo Hongmei1,2, Yang Peijie2, Wang Changjiang2, Yu Jing3, Mu Xing2
1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
2. Geoscience Research Institute, Shengli Oilfield Branch Co., SINOPEC, Dongying, Shandong 257015, China;
3. Shengli Branch, Geophysical Corporation, SINOPEC, Dongying, Shandong 257086, China
Abstract:Conventional two-point geostatistics (TPG) simulation algorithms, limited to the reproduction of two-point statistics, such as a variogram model, cannot reproduce complex geological structures. The emerging multiple-point geostatistics (MPG) can simulate complicated geological sedimentary characteristics using multiple-point relations. Firstly, basic concept and method of MPG are introduced in the paper. Secondly, a multiple data constraints stochastic simulation is proposed based on the existing algorithms, and its effectiveness is verified by model data. Finally, using training images, well logging data, and seismic inversion data, multiple data joint multiple-points geostatistics lithofacies simulation of Dongying delta is realized based on this algorithm. The proposed method can produce good results and is beneficial for further application.
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