DosBond™ LT-30 is a dry additive blend that improves bonding and zonal isolation and provides expansion in......
DosBond™ LT-10 Expansion Agent
In the process of setting time of the cement, it usually goes through shrinkage which causes the cement sheath to crack and be permeable. But the use of expansion agents can overcome and improve some shortcomings of ordinary cement slurry, so it can enhance the density, strength, and integrity of the cement.
DosBond™ LT-10 is an expansion agent that provides expansion in any API class of cement (A, C, G, or H). This is a dry additive blend that improves bonding and zonal isolation and helps control micro-channels, which provide a pathway for inter-zonal communication. This incredible system has mechanical properties to endure the wellbore stresses without the need for foaming or elastomeric additives. Additionally, slurry and set cement properties can be easily modified for optimal results besides a simple cement job.
Application temperature: Static temperature range is up to77 °C (170 °F), even optimum expansion can be achieved when this expansive agent is used below 54 °C (130 °F).
According to the figure, at room temperature, expansion ratio ranges from 0.1-0.8% depending on the concentration used and remain more or less constant after 6 months of curing. At 60 °C, expansion ratio also observed with class C and H slurries and ranges between 0.1-0.3%.
|Absolute Volume||0.0486 gal/lb|
|Bulk Density||59.5 lb/ft3|