Reservoir Evaluation and Development ›› 2018, Vol. 8 ›› Issue (3): 79-82.
• Non-conventional Reservoir • Previous Articles
Lai Jianlin,Fang Qilong,Gao Yingyun,Wei Wei
Received:
Online:
Published:
Abstract:
Due to the well-developed end cleat and surface cleat, the complicated fracture morphology forms easily in the coal-bed fracturing, and the conventional double-wing fracture model is not suitable for the optimization of the coal-bed methane fracturing design. In order to improve the production of the coal-bed methane, we proposed a characterization method for the equivalent seepage of the complex fracture, in which the complex network fracture was equivalent to the high permeability zone. By optimizing the size and permeability of the high permeability zone, we got the best overall fracturing fracture length and fracture conductivity. Meanwhile, we also optimized the pumping parameters by using 3D fracturing simulation software, and carried out the fracturing operation and down-hole micro-seismic monitor tests of 3 wells. The results showed that the fracture length covers a wide field and the complexity after fracturing is high, and the average post-fracturing daily production is 1 376.7 m 3/d. It provides a technical support to the integral fracturing development of coal-bed methane.
Key words: coal-bed methane, integral fracturing, network fracturing, SRV fracturing, parameter optimization
CLC Number:
Jianlin Lai,Qilong Fang,Yingyun Gao, et al. Research and application of integral network-fracturing of coal-bed methane of southern Yanchuan[J]. Reservoir Evaluation and Development, 2018, 8(3): 79-82.
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URL: https://red.magtech.org.cn/EN/
https://red.magtech.org.cn/EN/Y2018/V8/I3/79
Fig. 1
Sketch map showing complex fracture networks equal to high permeability zone"
Fig. 2
Optimization geologic model of coal seam overall fracturing, by Eclipse"
Fig. 3
Relation between accumulate production and permeability zone after 10 years' fracturing"
Fig. 4
Relation between accumulate production and high permeability zone after 10 years' fracturing"
Fig. 5
Variation of fracture volume along with liquid level and displacement"
Table 1
Fracturing treatment parameters of platform W69"
Fig. 6
Monitor planform of down hole microseism fractures"
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