1. Summary
DOC-G71S is a kind of polyvinyl alcohol dehydrating agent. It can effectively reduce dehydration through film-forming and plugging, and it also has a certain function of preventing gas channeling. This kind of fluid loss reducing agent is often used with DOC-F44S dispersant. It has good dispersing and dissolving characteristics. At the same time, its price is much lower than that of AMPS fluid loss reducing agent. It can be used at 20-90℃. It can be used in low density, conventional density and other systems. It can also be used in fresh water, brine, sea water and other water quality.
2. Technical Data
Items | Index |
Appearance | Colorless solid powder |
Density, g/cm3 | 2.2-2.4 |
Performance index of cement slurry
Items | Index |
Water loss amount,ml（52℃，6.9MPa,30min） | ≤50 |
Thickening time, min(52℃，15MPa) | ≤150 |
The initial consistency, BC | ≤30 |
Compressive strength, MPa（60℃，24h, ordinary pressure） | ≥14 |
Free liquid,% | ≤1.5 |
Cement paste formula: 301g fresh water +3.5g dispersant DOC-F44S+700g G grade cement +7g DOC- G71S+2g defoamer DOC-X60L | |
3. Application
3.1. dry mix, wet mix are ok. It can be mixed with sea water, and also fresh water.
3.2. The suitable temperature is 20 ~ 90℃.
3.3. increase the range, 0.5~3.0% (BWOC), recommended increase of 1%.
4. Storage
Store in a ventilated, cool and dry environment to avoid sun and rain. The shelf life is 12 months.
