Fluid Loss Additives-OBC-31S

Short Description:

1. Summary  OBC-31S is a polymer oil well cement fluid loss additive. It is copolymerized with AMPS/AM, 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...


Product Detail

1. Summary

  •  OBC-31S is a polymer oil well cement fluid loss additive. It is copolymerized with AMPS/AM, 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.

2. Technical data

Item

index

Appearance

White to light yellow powder

3. 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.

 

 

 

 

 

4. Usage range

  • Temperature: ≤180°C (BHCT).
  • Suggestion dosage: 0.6%-3.0% (BWOC).

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