A new fracturing material in oil and gas industry

2nd International Conference on Design, Materials, and Manufacturing

材料科学;机械制造

Cai, Bo^1 ; Xu, Jiangwen^2 ; He, Chunming^1 ; Cheng, Ning^2 ; Gao, Yuebin^1 ; Chen, Jin^2 ; Wang, Jia^2

PetroChina Research Institute of Petroleum Exploration and Development, Langfang city, Hebei Province

065007, China^1

Xinjiang Oilfield Company, PetroChina, Kelamayi city, Xinjiang Province

834000, China^2

关键词: Core permeability;    Fracture conductivities;    High temperature;    Oil and Gas Industry;    Peak viscosities;    Residue contents;    Shearing performance;    System viscosity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/220/1/012011/pdf
DOI  :  10.1088/1757-899X/220/1/012011

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this study, a novel non-residual fracturing fluid was developed. This fracturing fluid system is crosslinked under acid condition and owns the advantages of fast dissolving, excellent sand carrying ability, non-residual, good anti-swelling property and low damage etc. Experimental results show that this system viscosity can reach 95% of peak viscosity in 3 minutes, the surface tension of the gel breaking liquid is 25 mN/m, the residue content of the gel breaking fluid is 10mg/L, core permeability damage rate less than 15% which greatly reduces the damage to formation and fracture conductivity. The shear viscosity of fracturing fluid for 90min is 260 mPa.s, it has good resistance to high temperature and shearing performance and can meet the requirements of fracturing in tight reservoir. The new fluid was tested in 65 wells in the tight gas and oil reservoir in western China. Oil &gas production after stimulation using the new fluid increased 2-5 times compared with wells in similar locations.