Damage-Free Carbonate Stimulation
VDA viscoelastic diverting acid, a self-diverting, polymer-free acidizing fluid, can be used alone or with other treating acids for total zonal coverage in carbonate reservoirs. It viscosifies as it stimulates in carbonate formations, diverting the remaining acid treatment fluid into zones of lower injectivity for
- improved zonal coverage across long intervals and high permeability contrasts
- extremely efficient wormholing behavior in a wide range of conditions
- significantly better leakoff control than straight hydrochloric and noncrosslinked gelled acid
- high fluid efficiency during acid fracturing treatments
- simple mixing for a smaller equipment footprint
VES fluid technology for total zonal coverage
Diverters can cause formation damage in carbonate formations. VES viscoelastic polymer-free surfactant does not damage the formation and can be bullheaded. It is self-diverting without incurring residual damage.
Enhanced, drag-reducing properties significantly lower friction pressure to reduce pumping requirements and treat deeper zones. VES-based fluids include VDA viscoelastic diverting acid, ClearFRAC polymer-free hydraulic fracturing fluid, and ClearPAC fluid system for gravel packing.
Ideal consistency
The fluid rapidly develops viscosity in situ upon acid spending and becomes self-diverting. The viscosity reduces dominating wormholes and allows the fluid to stimulate other zones.
Reduced cleanup costs
Recovery and well cleanup are easy after treatment. The barrier is broken down by production or dilution with formation fluids. Only low pressures are required for a smoother process.
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