Fracture characteristics of the 8th member of Shihezi formation in Linxing Area and its influence on fracturing effect

Li Jianhong; Wang Yanbin

doi:10.19606/j.cnki.jmst.2021.04.002

Volume 6 Issue 4

Jul. 2021

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Li Jianhong, Wang Yanbin. Fracture characteristics of the 8th member of Shihezi formation in Linxing Area and its influence on fracturing effect[J]. Journal of Mining Science and Technology, 2021, 6(4): 379-388. doi: 10.19606/j.cnki.jmst.2021.04.002

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Fracture characteristics of the 8th member of Shihezi formation in Linxing Area and its influence on fracturing effect

doi: 10.19606/j.cnki.jmst.2021.04.002

College of Geoscience and Surveying Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China

Received Date: 2020-09-29
Rev Recd Date: 2020-11-10
Publish Date: 2021-08-01

Abstract

Abstract

In order to study the influence of natural fractures on fracturing effect of the 8th member of Shihezi formation in Linxing area, the characteristics of natural fractures in Linxing area are described based on field joint observation and imaging logging data.At the same time, the micro seismic dynamic monitoring method is used to monitor the process of the formation of the fracturing fractures in the 8th member of Shihezi formation in Linxing area.The results show that: ① The natural fractures of 8th member of Shihezi formation in Linxing area are mainly concentrated shear joints with large dip angle, but the total number of natural fractures is less, and the dominant directions of joint are NNW, NWW, NNE and NEE. ② The fracturing effect of crossing control type is the worst, the communication type is better, and the capture type is the best. Smaller approach angle and horizontal principal stress difference are beneficial to the opening of natural fractures. When the level of horizontal principal stress difference in the fracturing area is higher, It's better to adopt a smaller approach angle for fracturing, and this type control of fracturing is communication. When the level of horizontal principal stress difference in the fracturing area is smaller. It's better to adopt a bigger approach angle for fracturing, and this type control of fracturing is capture control type. The results provide a theoretical basis for hydraulic fracturing scheme design of tight sandstone.
- natural fractures,
- joints,
- fracturing effect,
- tight sandstone

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Fracture characteristics of the 8th member of Shihezi formation in Linxing Area and its influence on fracturing effect

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