Performance and Damage Evaluations of Fracturing Fluid in Tight Sandstone Oil Reservoirs

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Liu, X.F.^1

College of Energy Engineering, LongDong Uniersity, Qingyang

745000, China^1

关键词: Damage evaluation;    Formation water;    High temperature;    Permeability damage;    Residual content;    Residue contents;    Shear properties;    Tight sandstones;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/4/042003/pdf
DOI  :  10.1088/1755-1315/295/4/042003

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Fracturing fluid from M oilfield, Ordos's basin, China was investigated. The shear viscosity, emulsification and demulsification performance, residual content in gel breaking fluid, compatibility among foreign fluid and formation water, and permeability damage were separately analyzed. Results show that the fracturing fluid system has better shear properties and sand carrying capacity at high temperature. The emulsification rate reached more than 60%, while the demulsification rate was less than 25%. The compatibility among working fluid and the formation water was relatively poor and precipitation was easily to generate. The residue content in broken gel was relatively low but the residue particles were more likely to enter micro fractures; permeability damage was moderately weak in fractured samples.