Integrated Fracture Delineation in Volcanics, Junggar Basin, China

Abstract:

Fracture effectiveness, extension and connectivity from borehole surface into deep formation are the key factors to control producibility of volcanic formations. A systematic and integrated fracture delineation approach was set up which integrated available measurements with multi-scale depth of investigation to cover borehole surface, near wellbore and deep formation. High resolution micro-resistivity image was used to identify fractures on the borehole surface; shear anisotropy enhanced by dispersion analysis was used to evaluate fractures away from the borehole; Borehole acoustic reflection survey technique was applied in vertical wells to assess probable fracture networks deep into formation up to maximal 10 meters. This multi-scale approach had been implemented in multiple wells drilled in volcanic formations in Junggar basin, which helped a lot on fracture evaluation and productivity estimation.

• Periodical: Advanced Materials Research (Volumes 1073-1076)
• Pages: 2019-2024
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.2019
• Online since: December 2014
• Authors: Fang Fang Wu, Jin Chuan Zhang, Hao Zhang, Jin Long Wu
• Keywords: Fracture Delineation, Image Data, Junggar Basin, Shear Dispersion, Sonic Data, Volcanics

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