Summary
OBC-31S is a polymer oil well cement fluid loss additive. It is copolymerized with AMPS, which has good resistance to temperature and salt, as the main monomer, combined with other salt-tolerant monomers. The molecule contains a large number of -CONH2, -SO3H, -COOH and other strong adsorption groups, which play an important role in salt resistance, temperature resistance, free water adsorption, and fluid loss reduction.
OBC-31S has good versatility, can be used in a variety of cement slurry systems, and has good compatibility with other additives.
OBC-31S has a wide application temperature, high temperature resistance up to 180℃, good fluidity and stability of the cement slurry system, less free liquid, no retardation, and rapid strength development.
OBC-31S is suitable for fresh water/salt water slurry mixing.
Technical data
|
Item |
index |
|
Appearance |
White powder |
Cement slurry performance
|
Item |
Technical index |
Test condition |
|
Water loss，mL |
≤50 |
80℃,6.9MPa |
|
Thickening time,min |
≥60 |
80℃,45MPa/45min |
|
Initial consistency,Bc |
≤30 |
|
|
Compressive strength, MPa |
≥14 |
80℃,normal pressure,24h |
|
Free water, mL |
≤1.0 |
80℃,normal pressure |
| Cement slurry composition: 100% G grade cement (high sulfur resistance) + 44.0% fresh water + 0.7% OBC-31S + 0.5% defoamer. | ||
Usage range
Temperature: ≤180°C (BHCT).
Suggestion dosage: 0.6%-3.0% (BWOC).
Package
OBC-31S is packed in a 25kg three-in-one compound bag, or packed according to customer requirements.
Remark
OBC-31S can provide liquid products OBC-31L.
