首页|A new multi-fracture geometry inversion model based on hydraulic-fracture treatment pressure falloff data
A new multi-fracture geometry inversion model based on hydraulic-fracture treatment pressure falloff data
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Multi-fracture hydraulic fracturing has been widely used in unconventional oil or gas production. Determining the fracture geometry at the end of multi-fracture propagating simultaneously and early estimating of the stimulation performance can improve the understanding of the well productivity. Coupled with other information on treatment execution, this understanding may help define changes in treatment design and execution that increase well productivity. G-function pressure drop curves analysis is an important method to determine the single fracture geometry. However, it is difficult to estimate the multi-fracture geometry in each fracturing stage by G-function model. In this paper, we propose a new model to calculate the multi-fracture geometry based on the G-function plot of pressure falloff data after hydraulic-fracture treatment in each fracturing stage. First, stress shadow and the dynamic partitioning of flow rate are first considered in the G-function model for the calculation of multi-fracture geometry distribution. Second, proportional function of fracture length is incorporated in the G-function model in this paper, which solves the problem of the non-uniqueness of fracture lengths and widths calculation outcomes. Through comparing with the numerical simulation results, our model is verified. Finally, a sensitivity analysis of the fracture control parameters is performed based on our model. This paper provides a new semi-analytical method to quickly determine the multi-fracture geometry after each horizontal well fracturing stage. It can be used to evaluate the performance of multi-fracture hydraulic fracturing and help improve the well productivity.
NSTL
