СКСт
Purpose
Processing of input and output wells, operating clastic reservoir with the formation temperature up to 80 °C
Component reagents
- Dry acid mixture СКСт
- Non-ionic or cationic surfactant
- Fresh water
Basic properties
- Slow reaction with the rock;
- Low corrosiveness;
- Compatibility with saline water;
- The stability of the formation of iron hydroxide
Injection Volume
- The volume of injected acid composition is calculated by a program and averages between 1.5 and 2.0 m3*;
- The volume of buffer and pushing rim is 0.25-0.5 m3*
Equipment
- Pump truck,
- Water tank,
- A tank for buffer preparation,
- A tank for an acid solution preparation,
- Acid unit
Application technology
- Injection of buffer solution;
- Injection of acid composition;
- Injection of buffer solution;
- Flushing with water;
- 4-8 hours delay for response
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* The volumes are given per 1 m of perforated thickness of the reservoir