Validity of Hydraulic Fractures in the KL Volcanic Gas Reservoir

Journal: Advanced Management Science (AMS)
Author: Feng Zhang1, Wenlu Yang2*, Jiangling Hong1, Nan Zhao1, Yanling Li1, Xiaolei Wang1, Xing Chen2

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited


The volcanic formation is an important unconventional reservoir. KL volcanic gas reservoirs were discovered and the buried depth is about 3600 m. In this paper, complicated storage space and complex pore structure was briefly described. Then, volcanic mechanical properties were tested by triaxial device; the static Young modulus is about 36 -52 GPa and Poisson ratio 0.194 to 0.205 respectively. Finally, based on fracturing pressure information, the in-situ stresses were interpreted about 51.7-64.4MPa; multiple fracture number is about 2 or 3 and the fluid leak-off coefficient can reach 7.8-9.2E-4 m/m1/2; the dynamic fractures length varies from 75-107 m with average 88.53m, the effective fracture length is about 63.8m and the fracture conductivity is 12.34 D.cm by interpretation of well testing. Obviously, the effective fracture length are less than dynamic fracturing length.


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