An Approach to Computer 3D Modeling of Horizon with Complex Faults
The 3D modeling of horizon based on complex faults has always been a difficult issue. Adequately considering the barrier effect of faults, the deficiency of data on some horizon subset zones and previous research results, this paper proposes a new modelin
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An Approach to Computer 3D Modeling of Horizon with Complex Faults Leiyin Jiao, Hongzhuan Lei, Ziliang Yu, Li Luo and Tao He
Abstract The 3D modeling of horizon based on complex faults has always been a difficult issue. Adequately considering the barrier effect of faults, the deficiency of data on some horizon subset zones and previous research results, this paper proposes a new modeling method based on fault plane. This method firstly generates fault plane by fault line, then fits horizon based on fault plane data, that is to say, uses fault plane data as reference data to assist to compute when there are deficient data on some subset blocks of horizon. The effect of practical application using this method shows that this method well handles the model of horizon with complicated distribution of faults, which may include normal fault, reverse fault, cross fault or their mixture, and perfectly represents the distribution of horizon.
Keywords 3D modeling of horizon Fault plane Subset block Reverse fault Cross fault
97.1 Introduction Because of the complication of the fault distribution, the research about the 3D modeling of horizon based on faults has always been a difficult issue. The main methods of processing faults are as follows: a method based on blocking, a method based on fault plane, horizon recovery method, fault trajectory method and so on [1], however, any of these methods cannot deal with the problem very well. In
L. Jiao (&) H. Lei Z. Yu L. Luo T. He China University of Mining and Technology, Xue yuan Road Ding 11, 100083 Beijing, China e-mail: [email protected]
W. Lu et al. (eds.), Proceedings of the 2012 International Conference on Information Technology and Software Engineering, Lecture Notes in Electrical Engineering 212, DOI: 10.1007/978-3-642-34531-9_97, Ó Springer-Verlag Berlin Heidelberg 2013
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recent years, a segmentation process, Dm-splines and the finite element method [2], is used to approximate surfaces with faults; The potential field method was designed to build 3D geological models [3]; Using empirical geological rules to reduce structural uncertainty in seismic interpretation of faults [4]; Treating the faultage as boundary when interpolating the stratum spatial [5]; Using a simple plane to simulate the fault or multiple combined planes to approximate the fault [6], which can simulate the whole fault plane but not the fault plane in some horizon. All of these methods need adequate horizon sample points as the prerequisite, and some of them are very difficult to implement. In this paper, we propose a novel modeling method based on fault plane. This method is not only competent in the situation of deficient horizon data, but also considers the influence caused by the interception of faults, and it also can automatically establish modeling by computer. The effect of practical application shows that this method works effectively.
97.2 Modeling Theory and Flow Chart 97.2.1 Modeling Theory The smooth horizon becomes not smooth under the infl
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