FC-634S High Temperature Fluid Loss Control Additives
• FC-634S is a polymer fluid loss additive for cement used in oil well and formed by copolymerization with AMPS/NN as main monomer with good temperature and salt resistance and in combination with other anti-salt monomers. The product has introduced groups that are not easy to hydrolyze so that the high temperature resistance is significantly enhanced. The molecules contain a large number of highly adsorptive groups such as - CONH2, - SO3H, - COOH, which plays an important role in salt resistance, temperature resistance, absorption of free water, water loss reduction, etc.
• FC-634S has good versatility and can be used in a variety of cement slurry systems. It has good compatibility with other additives.
• FC-634S has a high viscosity of low shear rate, which can effectively enhance the suspension stability of the cement slurry system, maintain the fluidity of the slurry, prevent sedimentation at the same time, it has a good anti gas channeling performance, the viscosity of low shear rate is lower than FC-632S.
• FC-634S is suitable for wide temperature with high temperature resistance up to 230℃. After use, the fluidity of cement slurry system is good, stable with less free liquid and without retarding set and the early strength at low temperature develops quickly. It is suitable for fresh water/salt water slurry preparation.
Foring Chemical FLCA is a low-cost polymeric fluid loss additive designed for reducing high temperature high pressure (HTHP) fluid loss which are effective for use in differing conditions and requirements, such as high temperatures and high salt concentrations. FC-634S is a high temperature fluid loss control additive and it is suitable for Russian and North American market.
| Product | Group | Component | Range |
| FC-634S | FLAC HT | AMPS+NN | <230degC |
|
Item |
Index |
|
Appearance |
White to light yellow powder |
|
Item |
Technical index |
Test condition |
|
Water loss, mL |
≤100 |
80℃,6.9MPa |
|
Multiviscosity 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 |
| Component of cement slurry: 100% grade G cement (High sulfate-resistant)+44.0% fresh water+0.6％ FC-634S+0.5 % defoaming agent. | ||
Fluid loss control agents have been introduced to oil-well cement slurries for more than 20 years, and the cementing industry has come to recognize a considerable improvement in the quality of cementing projects. In fact, it is well accepted that a lack of fluid loss management may be to blame for primary cementing failures due to excessive density increase or annulus bridging, and that cement filtrate invasion of the formation may be detrimental to the output. Fluid loss additives can help cement slurry recover more efficiently by preventing oil and gas layer contamination as well as successfully controlling fluid loss of the cement slurry.
