Productivity Model and Production Decline Characteristics of Multi-Fracturing Horizontal Well

Abstract:

By using the potential theory and the superposition principle, Productivity model of multi-fracturing horizontal well is established under the condition of infinite conductivity fractures. It solves the problem by using numerical methods and analyzes the influence of fracture numbers, fracture length and fracture spacing on well production by using actual reservoir parameters. Finally, it analyzes the production decline characteristics of multi-fracturing horizontal well based on the change of production curve. In the early period of production, the well production increases with the increase of fracture numbers, fracture length and fracture spacing. In the late period, the fracture parameters have less effect on well production. Early-stage production of multi-fracturing horizontal well obeys to the modified-hyperbolic decline model, while the relationship between ratio of Q, Qi and time is exponential model in the late-stage. It has some significance for design of horizontal well fracturing parameters and production forecasts in unconventional reservoirs.

• Periodical: Applied Mechanics and Materials (Volume 733)
• Pages: 3-8
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.733.3
• Online since: February 2015
• Authors: Peng Chen, Xin Hai Wang, Shan Jiang, Guo Liang Li, Hong Liu
• Keywords: Horizontal Well, Multi-Fracturing, Production Decline, Productivity Model

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