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Research on the viscosity‐increasing mechanism and performance analysis of modified polysaccharide natural polymer fracturing fluid gel.

Authors :
Zhou, Chengyu
Sun, Yuan
Zhou, Min
Chen, Wenke
Zeng, Linghao
Li, Yifan
Li, Benhui
Fan, Yuzhu
Bao, Dan
Source :
Canadian Journal of Chemical Engineering; Jul2023, Vol. 101 Issue 7, p4244-4254, 11p
Publication Year :
2023

Abstract

In this paper, a guar gum‐based hydraulic fracturing fluid suitable for low permeability oil and gas reservoirs was prepared using alkylamine guar gum (J580) as a thickening agent. The viscosification mechanism and comprehensive properties were analyzed to provide theoretical support for improving the fracturing fluid utilization rate and oil and gas field development in Changqing Oilfield. In this experiment, the properties and microstructure of thickener J580 were analyzed by infrared spectroscopy (FT‐IR), nuclear magnetic resonance (1H‐NMR), X‐ray diffraction (XRD), and transmission electron microscope (TEM). The rheometer, dynamic filtration device, and acid erosion fracture conductive ability device were used to study the temperature and shear resistance performance, viscoelastic properties, dynamic filtration performance, and fracture conductive ability damage of the system. the gel breaking performance, formation water compatibility, and anti‐swelling performance of the system were measured according to the standard. The results show that J580 is an amine modified product of guar gum, and its viscosity increasing mechanism is similar to that of guar gum. The breaking time of the system is 375 s, the residue content is 413 mg/L, and the surface tension is 26.49 mN/m. At 90°C, the viscosity of the solution can be maintained at 180 mPa · s, loss modulus G" dominates, the anti‐swelling rate is 82.5%, the damage rate of the conductive ability is 22.40%, and the dynamic filtration coefficient is 1.3 × 10−5 m/s1/2. The fracturing fluid system has good dynamic filtration performance, conductive ability, temperature and shear resistance, good structural strength, can easily break glue and return, and less residue content. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00084034
Volume :
101
Issue :
7
Database :
Complementary Index
Journal :
Canadian Journal of Chemical Engineering
Publication Type :
Academic Journal
Accession number :
164092854
Full Text :
https://doi.org/10.1002/cjce.24719