Fracture-development identification using trajectory-based clustering algorithm with time-spatial constraints
Qingfeng Xue, Yibo Wang, Huhong Zhai, Xu Chang · 2018
In the shale gas development, how to efficiently acquire the dynamic expansion process of fracture during fracturing has been a problem that has perplexed academia and industry. At present, the conventional method usually uses the obtained microseismic event positioning results to carry out the qualitative analysis or uses various simulation tools to do the numerical simulation analysis. Because the presentation ability of point information is insufficient, the microseismic event location analyzing method is still having many problems. For the numerical simulation method, due to the complexity of underground media, there is always a deviation between calculation and practical issues. In this article, we focus on the data-driven approach. We transform the acoustic emission point data into the fracture trajectory data by using spatiotemporal attribute constraint. Then, the density-based trajectory clustering algorithm is introduced. Based on the spatiotemporal property constraints, the algorithm of dynamic crack propagation is proposed, and the validity of this method is verified by hydraulic fracturing experiment data. Presentation Date: Wednesday, October 17, 2018 Start Time: 9:20:00 AM Location: Poster Station 16 Presentation Type: Poster