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- Title
四川盆地龙马溪组页岩气缝网 压裂改造甜点识别新方法.
- Authors
沈 骋; 赵金洲; 任 岚; 范 宇
- Abstract
The key to obtain economic productivity on shale gas reservoir stimulation is to identify the frac-turing sweet spots.Considered some factors on stimulation such as layered property brittle minerals contents and natural weak plane feature which are in Wufeng Formation to Longmaxi Formation in Sichuan Basin, layered index brittleness index and fracture network probability index had been proposed to establish the network-fracturing sweet spot index and a method to identify fracturing sweet spot based on shale facies. It was concluded that shale reservoir, with layered index between 0.5 and 0.6 brittleness index between 0.55 and 0.6,racture network probability index between 0.6 and 1.0 network-fracturing sweet spot index between 0.55 and 1.0 as the fracturing sweet spot has preponderant stimulation potential and efficient network-fracturing due to visible layered property,and high proportion of carbonate.Moderate development of packed fractures could obtain better stimulation. The conclusions agree with the result of microseismic monitoring and production profile. The method could be a theoretical foundation and live guidance for providing strategy and design scheme for fracturing.
- Subjects
SICHUAN Sheng (China); BRITTLENESS; SHALE gas reservoirs; MINERAL properties; SHALE; FACIES; CARBONATE minerals; RESERVOIRS; CARBONATES
- Publication
Natural Gas Geoscience, 2019, Vol 30, Issue 7, p937
- ISSN
1672-1926
- Publication type
Article
- DOI
10.11764/j.issn.1672G1926.2019.03.008