Prodcut: Low-viscosity polyanionic cellulose (PAC-LV)
Grade: Low-viscosity
Product Description:
PAC-LV, also referred to as PAC low-viscosity grade, is a water-soluble polymer produced only from cellulose chemically reacted with carboxy-methyl (anionic) groups. The product obtained is further purified to significantly increase the active polymer content.
The product is a free-flowing and/or granular powder.
PAC-LV is widely used in water-based drilling fluids for a variety of applications, such as filtration control, viscosity and shale inhibition. Although field use can vary, this procedure focuses on filtration control and viscosity characteristics.
Product Physical Requirements:
To obtain the best handling in the field, it is recommended that the particle size for PAC LV powder be u 0.8 mm(u 20mesh)
Technical Requirements:
It shall not contain any other polysaccharides such as starch, guar or other naturally occuring polymers or their derivatives.
PAC-LV shall be free of any foreign polymer. Therefore, a qualitative starch determination shall be performed. If starch is found, no further testing should be performed and the sample shall be rejected.
Filtrate Volume:
API standard evaluation base clay is an example of a suitable product available commercially. Requests for clay should be directed to the API which will forward the request to a supplier for further handling. This information is given for the convenience of user of this internal standard and does not constitute an endorsement by ISO of this porduct.
PAC-LV Physical requirement
Item | Quality Specification | |
Appearnce | White free flowing powder | |
Presence of starch or starch derivatives | Absent | |
Degree of substitution (Corrected for Moisture and Salt) | ≥0.90 | |
PH Value 1% | 6.0-8.5 | |
Moisture Content | ≤ 8.0 | |
Apparent Viscosity | ≤ 40.0 cP | |
API Fluid Loss, ml | ≤ 16.0 | |
Particle size ( sieving )( pass through80 mesh ) | ≥ 99% | |
