DosThiox™ 99 Thixotropic Agent
Flow with Confidence, Stand with Strength
DosThiox™ 99 is an aqueous solution when blended with a hydraulic cement comprising calcium hydroxide and/or a hydrolyzable calcium oxide and water form novel cement slurries that are pumpable and thixotropic. DosThiox™ 99 is designed to mix with the cement slurries form a gel-like structure within a short period of time after mixing which will thin when subjected to conditions of shear or stress (as for example during pumping) and which will reset to a gel-like structure when the condition of stress or shear is relieved.
- Performance Highlight
- Typical Properties
- Benefit & Application
Rigid, Pumping Stops
Fluid Again by Force
After mixing was complete, the aqueous cement slurry was allowed to remain stationary for a period of from about four to five minutes. The slurry formed a self-supporting gel at the end of this time. The gelled aqueous cement slurry, however, was easily broken by agitation with a stirring rod or by shaking the container and when broken poured easily from the container.
- Physical State
- Solubility in Water
- 1 - 2
Benefit & Application
- Applicable at temperature less than 85 °C
- Can be used with either fresh water or seawater
- Must be thoroughly dispersed in the mix water before the cement is added
- Easily pumped downwardly through the casing
- Prevent the "slurry fallback"
- Tends to seal off "thief zones"