FC-620S Fluid loss Control additives
• FC-620S is a polymer fluid loss additive for cement used in oil well and formed by copolymerization with AMPS 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-620S is suitable for wide temperature with high temperature resistance up to 150℃. After use, the fluidity of cement slurry system is good, stable with less free liquid and without retarding set and strength develops quickly.
• FC-620S is suitable for a variety of sea water cement slurry systems. It has good compatibility with other additives.
• FC-620S has a strong dispersibility, especially is suitable for fresh water cement slurry systems with high solid content or high-proportioned superfine materials.
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-620S | FLAC LT | AMPS+AM | <150degC |
|
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% sea water+0.8％ FC-620S+0.5 % defoaming agent. | ||
For more than 20 years, fluid loss control agents have been added to oil-well cement slurries and it is now recognized in the industry that the quality of cementing jobs has significantly improved. Indeed, it is generally clearly acknowledged that a lack of fluid loss control may be responsible for primary cementing failures, due to excessive density increase or annulus bridging and that formation invasion by cement filtrate may be deleterious to the production. Fluid loss additive can not only effectively control the fluid loss of cement slurry, but also prevent oil and gas layer from being polluted by the filtered fluid and thus increase the recovery efficiency.
