|
|
The integrated poststack fracture prediction of Xusi formation in Xinchang survey |
WANG Dan, JIA Yue-Wei, WEI Shui-Jian, ZHENG Wen-Bo |
Petroleum Exploration and Production Research Institute of Sinopec, Beijing 100083, China |
|
|
Abstract Techniques of prestack fracture prediction mainly aim at vertical and high angle fractures. However, low angle fractures of the tight sandstone gas reservoir are dominant in Chuanxi field of Xinchang survey. Therefore prestack methods are not suitable to this survey. Furthermore, the reliability of single poststack attribute to predict fractures has been questioned. To overcome the above problems, the authors propose in this paper a new idea about the integrated fracture prediction. Firstly, fracture classification based on multi-attribute is adopted, and real measured data are used to monitor the result, and then qualitatively integrated fracture prediction of multi-attribute and multi-scale is realized. Secondly, ant attribute body can be obtained from curvature that has filtered the background data. The influences of the background part of curvature on the ant attribute body can be reduced, so that ant attribute body with high precision is obtained, which can recognize smaller fractures clearly. Finally, on the basis of the ant attribute body with high precision, 3D fracture model is established, and then quantitative prediction on the features of fracture development can be realized. The application of this new idea of integrated fracture prediction to Xinchang survey shows that the new method is effective, and the problem of low angle fractures prediction is effectively solved.
|
Received: 27 September 2013
Published: 10 October 2014
|
|
|
|
|
[1] |
CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. Research into the pore structure of tight reservoirs:A review[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 22-31. |
[2] |
SHI Lei, GUAN Yao, FENG Jin, GAO Hui, QIU Xin-Wei, QUE Xiao-Ming. Multi-level division method of flow units for accurate permeability assessment of glutenite reservoirs:A case study of reservoir W53 of Paleogene Wenchang Formation in Lufeng oilfield[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 78-86. |
|
|
|
|