Laboratory Results

The thickening time of WellLock resin can be effectively adjusted by changing the concentration of accelerator.  Lower accelerator concentrations lead to longer thickening times.  Higher accelerator concentrations lower thickening times but increase the rate of compressive strength development.

WellLock resin contaminated with drilling mud exhibit similar rheological behavior as those with cement, but mixtures containing up to 20% drilling mud still develop significant strength.

WellLock resin begins as a mixture of multi-functional monomers.  Via cross-linking a three dimensional covalently bonded polymer network is formed.

At a compressive strength of 12,500 psi, WellLock resin was reduced to 79% of its original height (recorded strain: 21%).  The strain that the resin withstood was over 100 times that of conventional cement. The compressive strength of WellLock resin was measured at 162°F (72°C).

Unlike cements which exhibit Bingham plastic rheological behavior, WellLock resin systems exhibit Newtonian rheological behavior and have little or no yield stress, allowing them to flow under extremely low forces.
 

The data presented in the accompanying chart was obtained on a FANN® 35 rheometer using a FYSA attachment.

The influence of WellLock resin on the shear bond of a cement system was determined by coating the interior of a shear bond mold with resin then adding cement to the mold.  It was found that a thin layer of resin between cement and the mold increased the shear bond six times.

Approximately one foot of WellLock resin was cast into an annulus and allowed to cure.  Water was used to generate a 1,000 psi pressure differential across the sealant.  No leakage or break through of water was observed.