FC-650S Fluid loss Control additives
• FC-650S is a polymer fluid loss additive for cement used in oil well and formed by copolymerization with AMPS/NN/HA as main monomer with good temperature and salt resistance and in combination with other anti-salt monomers. 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-650S has good versatility and can be used in a variety of cement slurry systems. It has good compatibility with other additives.
• FC-650S is suitable for wide temperature with high temperature resistance up to 230℃. It has a better suspension stability performance in high-temperature environment because of introducing humic acid.
• FC-650S can be used alone. The effect is better when used together with FC-631S/ FC-632S.
• It is suitable for fresh water/salt water slurry preparation.
High-temperature oil fields face a unique set of challenges when it comes to well cementing. One of these challenges is the issue of fluid loss, which can occur when the drilling mud filtrate invades the formation and causes a reduction in the fluid volume. To solve this problem, we have developed a specialized fluid loss reducer that is specifically designed for use in high-temperature oil fields.
| Product | Group | Component | Range |
| FC-650S | FLAC HT | AMPS+NN+Humic acid | <230degC |
|
Item |
Index |
|
Appearance |
White to light yellow powder |
|
Item |
Technical index |
Test condition |
|
Water loss, mL |
≤50 |
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+0.9％ FC-650S+0.5 % defoaming agent. | ||
Fluid loss control agents have been introduced to oil-well cement slurries for more than 20 years, and the industry has come to understand that this has greatly enhanced 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 formation invasion by cement filtrate may be harmful to the production. Fluid loss additives not only efficiently reduce cement slurry fluid loss but also keep the filtered fluid from contaminating the oil and gas layer, improving recovery efficiency.
