Study on the Property of Controlling Filtration by Viscoelasticity of a
New Associated Fracturing Fluid

doi:10.11885/j.issn.1674-5086.2012.04.05.02

Abstract

Abstract:

A new associated fracturing fluid（GRF）with non-building capacity was studied in this paper. Because it has
no wall building capacity，a simple device for filtration measurement suitable for this kind of fracturing fluid was designed，
and the methods for filtration measurement were also developed. The evaluation results show that the filtration property of
GRF is better than before. The influence of the viscoelasticity on filtrational resistance in the porous medium was studied with
RS6000 flowage meter and the core displacement device. The results show that GRF fracturing fluid can establish effective
filtrational impedance（R0）in core pore owing to its excellent viscoelasticity；the stronger the viscoelasticity is and the lower
the core permeability is，the larger R0 is，and the more difficult the fracturing fluid filtrates；the test results further indicate that
the viscoelasticity of the liquid is the most important factor to filtration controlling，and the influence of apparent viscosity and
viscoelasticity on the fluid loss was studied in the paper. Therefore we conclude that viscoelasticity of GRF fracturing fluid can
control its filtration.

Key words: associated fracturing fluid, viscoelasticity, relaxation time, filtrational impedance, filtration

Lin Bo1, Liu Tongyi1，2, Tan Haobo3, Wei Jun1. Study on the Property of Controlling Filtration by Viscoelasticity of a
New Associated Fracturing Fluid[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2012.04.05.02.

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