G-SEAL PLUS and G-SEAL PLUS COARSE wellbore stabilizing agents bridge and seal porous and
fractured formations in water-, oil-, and
synthetic-based drilling fluid systems.
When used to drill depleted zones with high differential pressures, the products'
bridging and plugging capabilities reduce differential-pressure sticking tendencies.
Both products can control seepage, decrease partial and severe lost circulation,
and reduce torque and drag. G-SEAL PLUS and G-SEAL PLUS COARSE agents are
chemically inert and will not affect the rheological properties of drilling fluid systems
when used at the recommended concentrations.
- For seepage losses (<10 bbl/h [1.6 m3/h]): 15 to 20 lbm/bbl [43 to 57
kg/m3] in spotted pills. The pills can be
incorporated into the entire system for a total concentration of 10 to 20 lbm/bbl (29 to 58
kg/m3), but close monitoring of the shakers is required.
- For partial losses (10 to 100 bbl/h [1.6 to 16 m3/h]: 20 to 50 lbm/bbl [57
to 143 kg/m3] in spotted pills. Extrahigh-permeability formations such as fractured carbonates and conglomerates may
require higher concentrations of G-SEAL PLUS or G-SEAL PLUS COARSE agents in conjunction with
other lost circulation materials of varied appropriate size distribution.
Both agents can also be used dry-blended with cement to effectively
seal off induced fractures and inhibit further propagation while cementing casing.
Torque and drag may be reduced by incorporating sweeps of G-SEAL PLUS or G-SEAL PLUS COARSE agents into the active system up to a total concentration of 20 lbm/bbl [57 kg/m3]. Initial
treatments for the active system may be added in 4-lbm/bbl [11.4-kg/m3] increments while
monitoring torque and drag.
G-SEAL PLUS and G-SEAL PLUS COARSE agents may require additional wetting agent when used in an
oil- or synthetic-based drilling fluid system.
Toxicity and handling
Bioassay information is available upon request. Handle as an industrial chemical, wearing protective equipment and observing the
precautions described in the safety data sheet.
Packaging and storage
G-SEAL PLUS and G-SEAL PLUS COARSE agents are packaged in 25-lbm [11.3 kg] multiwall paper sacks. Store in dry, well-ventilated area. Keep container closed. Store away from
incompatibles. Follow safe warehousing practices regarding palletizing, banding,
shrink-wrapping, and stacking.