›› 2015, Vol. 36 ›› Issue (2): 1-1.doi: 10.7657/XJPG20150219

   

Comparisons of Fault Capacity Dimension and Information Dimension with Numerical Simulation in Fracture Prediction

LIU Jingshou, DAI Junsheng, WANG Shuo, ZHANG Xiangcheng   

  1. (School of Geosciences, China University of Petroleum, Qingdao, Shandong266555, China)
  • Online:2019-01-01 Published:1905-07-12

Abstract: According to the fact that Minqiao oilfield is of simple structure and more faults, the fracture distribution in its reservoir is predicted by means of fault capacity dimension and information dimension method, the prediction result is compared with the result of numerical simulation of structural stress field. The result shows that Minqiao oilfield has three fracture developing areas, and the fracture’s distribution trends predicted by fracture information dimension method and numerical simulation method are basically consistent. The fault activity is linearly proportion to fault width, the fault’s area information entropy reflects the fault activity in a certain extent, and overcomes the shortage of simple capacity dimension in characterization of fracture distribution. The fault width and spacing are essential factors that influence the fracture development. The fractal characteristics of the fault is of scale and the accuracy predicted by using fractal method is much lower than that by numerical simulation of structure stress field, specially in prediction of the local distribution of fractures. The numerical simulation is not accurate in predicting multistage fracture superimposition area.

CLC Number: