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.
[1]
W. Xin,et al.
A case Study of Hydraulic Fractures Optimization in Heavy Oil
,
2014
.
[2]
B Cai,et al.
Optimizing fluid flow coupling in complex artificial fracture network systems
,
2014
.
[3]
Wang Xin,et al.
Mathematical study of fracture face skin in hydraulic fractures
,
2011
.
[4]
Jon E. Olson,et al.
Modeling simultaneous growth of multiple hydraulic fractures and their interaction with natural fractures
,
2009
.
[5]
R. Gibson,et al.
Case History of Sequential and Simultaneous Fracturing of the Barnett Shale in Parker County
,
2008
.