Shale stabilizer and inhibitor system
Reduce the swelling of sensitive shales and drill cuttings exposed to water-based drilling fluids.
SPERSENE chrome lignosulfonate is a multipurpose deflocculant and gel-strength reducer, temperature stabilizer, and filtration-control additive for use in all water-based drilling fluids.
|Typical Physical Properties|
|Physical appearance||Dark brown powder|
|Bulk density||37 lbm/ft3 [590 kg/m3]|
|pH (1% solution)||2.8–4|
SPERSENE lignosulfate has proven to be an excellent all-purpose deflocculant and fluid-loss-control agent. It is effective for viscosity control and fluid-loss reduction in all water-based mud systems, including freshwater, brackish water, seawater, salt, lime, gyp, and potassium systems. Laboratory tests and field usage have demonstrated its superior deflocculating ability—even in the presence of contaminants and elevated temperatures.
Normal treatments of SPERSENE lignosulfate range from 1 to 12 lbm/bbl [2.85 to 34.2 kg/m3]. Initial treatments usually range from 1 to 6 lbm/bbl [2.85 to 17.1 kg/m3], depending on the mud system, solids concentrations, and the desired results; treatments can be added easily to the system through the mud hopper.
Because of the product’s low pH, SPERSENE lignosulfate treatments require additional caustic soda or an alternative alkaline material to maintain a consistent pH. A normal ratio is one sack of caustic soda for every four sacks of SPERSENE lignosulfate. It is most effective in mud systems with a pH in the range of 9 to 11. For lower-pH systems, the product can be premixed in a higher-alkalinity solution prior to being added to the active mud system.
Bioassay information is available upon request. Handle as an industrial chemical, wearing protective equipment and observing the precautions described in the safety data sheet.
SPERSENE lignosulfate is packaged in 50-lbm [22.7-kg] multiwall paper sacks. Store in a dry, well-ventilated area. Keep container closed. Store away from incompatibles. Follow safe warehousing practices regarding palletizing, banding, shrink-wrapping, and stacking.