Low-molecular-weight liquid clay inhibitor
Achieve excellent cuttings encapsulation, limit cuttings dispersion, and stabilize shales.
Shale stabilizer and inhibitor system
KLA-GARD shale stabilizer and inhibitor system reduces the swelling of sensitive shales and drill cuttings exposed to water-based drilling fluids. It inhibits shale hydration, reduces the effect of drill solids on viscosity, and works to minimize problems such as
This high-quality, concentrated product has applications in a wide variety of mud systems and has low-toxicity characteristics as to be considerable for offshore applications.
|Typical Physical Properties|
|Physical appearance||Clear blue liquid|
|pH (1% solution)||6.5–8.5|
|Solubility in water at 20 degC [68 degF]||100%|
|Flash point||>99 degC [210 degF] (Pensky–Martens closed cup)|
Normal concentrations of KLA-GARD system range from 11.4 to 22.8 kg/m3 [4 to 8 lbm/bbl] depending on hole size, rate of penetration, interval length, and reactivity of the shale. A minimum concentration of 11.4 kg/m3 [4 lbm/bbl] is required for the product to be effective. One lbm/bbl of KLA-GARD system contributes 508-mg/L chlorides; KLA-GARD B stabilizer, a chloride-free formulation, is available. To prevent bacterial attack, a biocide should be used.
KLA-GARD system works by being adsorbed onto active solids, thereby reducing their sensitivity to water. This action causes the product to be depleted from the mud system at a rate dependent on the reactivity of the formation, cuttings size, and amount of hole volume drilled. A test procedure is available to monitor the approximate concentration of excess KLA-GARD system.
|Estimated Depletion Rates|
|Hole size, in||6 1/8||8 1/2||9 7/8||12 1/4||14 3/4||17 1/2|
|KLA-GARD system, lbm/100 ft [kg/30 m]
Estimated depletion rate is based on a highly reactive shale. This table is based on 5.2-lbm KLA-GARD system per cubic foot of gumbo shale drilled. Actual depletion rates can vary, depending on the reactivity of the shale and the cuttings size.
Bioassay information is available upon request. Handle as an industrial chemical, wearing protective equipment and observing the precautions described in the safety data sheet.
KLA-GARD system is packaged in 208-L [55-galUS] drums and 18.9-L [5-galUS] cans. Store in a dry, well-ventilated area. Keep container closed. Keep away from heat, sparks, and flames. Store away from incompatibles. Follow safe warehousing practices regarding palletizing, banding, shrink-wrapping, and stacking.