-
Cementing Slurry
- Fluid Loss Additive Series
- Retarder Series
- Accelerator Series
- Dispersant Series
- Anti-Gas Migration Agent Series
- Defoamer Series
- Lightening Agent Series
- Weighting Agent Series
- Strength Enhancer Series for Light Weight Slurry
- Pipeline Flushing Agent Series for Spacer
- Spacer Agent Series for Spacer Liquid
- Anti-Contamination Agent for Completion Fluids
- Drilling Fluid
- Oil Recovery Chemicals
- 2-Acrylamide-2-Methylpropanesulfonic Acid
GH-II High Temperature Retarder for Oil Well Cementing
description1
Product Description
GH-II can stick on the surfaces of cement hydrate to inhibit contacting between cement and water, also stick on the surfaces of crystal nucleons to prevent their enlarging. So it can retard hydrating of cement slurry.
Characteristics
GH-II consists of various kinds of compounds, such as cellulose derivative and hydroxycarboxylic acid.
Normal dosage: 0.1%~1.0% (BWOC).
Suitable temperature:110℃~170℃(BHCT).
It is used in the medium-deep and deep well. It can prolong the thickening time effectively and increase the pumped time. It can formulate a right angle thickening cement slurry system.
It can reduce the consistency of cement slurry and improve the rheology.
Preferred to be mixed without water. Heated by steam if the wet mix is needed.
Technical Specification
|
Items |
Specification |
|
Appearance |
Free flowing powder |
|
Water content,% |
≤8.0 |
|
Fineness (0.315mm sieve),% |
<15.0 |
|
Thickening time(120℃.73.9MPa.61min), min |
|
|
Initial consistency(120℃.73.9MPa.61min), Bc |
≤30.0 |
|
Mutation value of thickening curve, Bc |
≤10.0 |
|
Extension value of thicking time, min |
≥60.0 |
|
Increased sensitivity, % |
≤25.0 |
|
Temperature sensitivity, % |
≤20.0 |
|
Transition time(120℃.73.9MPa.61min), min |
≤40.0 |
|
Free liquid(120℃),% |
≤1.4 |
|
Compression strength(144℃.21MPa.24h), MPa |
≥14.0 |
Packing, Storage
Be sacked with three-layer plastics bag, 25kg per bag.
Be kept away from moisture and possible damage of the packages in transportation, be stored in cool and dry situation.
Storage life time is two years.
Leave Your Message