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Formation Damage Nano Repair
Hydraulic fracturing is an indispensable technology for developing shale oil and gas resources.Slickwater fracturing fluid systems, with an anionic polyacrylamide thickener, are used in over 85% of cases. However, the introduction of slickwater as an external fluid into the formation inevitably leads to reservoir damage. The polymers in slickwater adhere to shale rock through weak chemical bonds, substantially affecting the effectiveness of shale reservoir enhancement.Disrupting the interaction between polymers and shale is crucial to reducing polymer retention in the reservoir and enhancing reservoir modification.
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Technical Details
Slickwater
Fluid Type
Number
Rock Sample Permeability
/mD
Damage Rate
Reduction in Damage Rate
Before Damage
/K0
After Damage
/K1
Conventional Slickwater
1-1 1076.14 903.2043 16.07% /
Slickwater
with Nano Repair Agent
1-2 1202.62 1046.039 13.02% 18.95%
Conventional Slickwater 2-1 638.05 521.5421 18.26%
 /
Slickwater
with Nano Repair Agent
2-2 588.27 505.4416 14.08% 22.88%
Conventional Slickwater 3-1 297.58 230.1781 22.65% /
Slickwater
with Nano Repair Agent
3-2 209.38 173.6598 17.06% 24.66%
Technical advantages



Hydraulic fracturing is an indispensable technology for developing shale oil and gas resources.Slickwater fracturing fluid systems, with an anionic polyacrylamide thickener, are used in over 85% of cases. However, the introduction of slickwater as an external fluid into the formation inevitably leads to reservoir damage. The polymers in slickwater adhere to shale rock through weak chemical bonds, substantially affecting the effectiveness of shale reservoir enhancement.Disrupting the interaction between polymers and shale is crucial to reducing polymer retention in the reservoir and enhancing reservoir modification.


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