Products
PRODUCT DESCRIPTION
In the mud shale reservoir, sandstone reservoir containing high contents of mudstone, mudstone cementation oil reservoir (containing such as montmorillonite, kaolinite, etc), under the condition of low salinity water, when water injection, well washing, acidification or fracturing technology is processed, clay hydration expansion maybe caused. Therefore, in the process of construction, water problem should be fully paid attention to.
TRUSTIN CLAYSTABLE clay anti-swelling agent has better characteristics than conventional chemical. Besides it has good performance of clay stabilization, also sand control, resistance reduction.
TECHNICAL SPECIFICATION
Item |
Index |
|
Appearance |
Uniform colorless to light yellow viscous liquid |
|
pH |
6-8 |
|
Anti-swelling Rate (2%), % |
≥80 |
|
Swelling Shrinkage Ratio(2%), % |
≥30 |
|
Resistance Reducing Ratio, % |
≥50 |
|
Stabilizing sand ability (10%)(900mL/h) |
Sand content, g/L |
≤0.05 |
Compatibility |
No stratification, precipitation and suspension phenomenon with carrying fluid, acid, mixed liquid |
FEATURES
1. As it could obviously prevent the clay mineral particles from hydrating, swelling, dispersing and migrating, it could make the water injectivity index oil field water injection increase significantly.
2. It has appropriate molecular weight, so it can be applied to high permeability and low permeability reservoirs. Also its unique rigid structure can enter the clay interlayer, in the role of various chemical forces, achieving high stability.
3. It could reduce injection resistance of injecting fluid. Resistance-reducing ratio is above 50%.
4. It has capability of inhibiting sand for the sandstone layer having certain content clays, so it could be used in the sand control and well washing processing.
5. Its performance is steady, use concentration is low. It could be used with different concentration as different geological condition. It could reduce cost, at the same time, it could improve performance. Use concentration for 0.5-1-2% is corresponding to anti-swelling rate 80-80-90%, swelling shrinkage ratio 30-35-40%. It could be widely used in the pretreatment for anti-swelling.
6. In the strong acid environment, it can still combine with capillary wall and shale with strong chemical bonds, so it could prevent capillary wall, shale and clay from swelling, dispersing and migrating, open the capillary, ensure oil flow into production wells, so as to improve oil recovery.
APPLICATION DIRECTION
1. It is mainly used for oilfield anti-swelling pretreatment before water injecting, fracturing and acidizing. It could be used individually, also could be added directly with acid fluid or fracturing fluid. Use concentration is 0.5-2%.
2. It is suitable for oil wells with high clay content and blocked oil wells caused by hydration expansion. Use concentration of 0.5-2%.
3. It is suitable for wells with short production cycle and unstable production. It could protect water sensitivity formation after construction. Use concentration is 0.5- 2%.
4. It could be used in the sand control and well washing. Use concentration is 10-15%.
PACKAGE AND STORAGE
Packaged in 200L drums. Stored in s shady, dry and ventilated place.