Introduction
The Acid Flooding System is a specialized laboratory apparatus designed for matrix acidizing studies, acid diversion agent evaluation, and core flooding experiments under simulated reservoir conditions.
The system enables simultaneous fluid injection into multiple core samples with different permeabilities, allowing researchers to evaluate acid distribution, formation damage removal, and fluid flow behavior in porous media.
Designed and manufactured by Petro Pazhouhesh Ahoura Company, this system is developed for advanced laboratory studies in reservoir engineering and enhanced oil recovery (EOR).
Advantages
- High corrosion resistance: Acid-contact components are manufactured from Hastelloy C-276.
- Parallel core injection: Enables simultaneous injection into two or three core samples.
- Accurate pressure monitoring: Equipped with six pressure transmitters for monitoring core inlet and outlet pressures.
- High-pressure operation: Maximum operating pressure of 700 bar (10,000 psi).
- High-temperature operation: Supports temperatures up to 125°C.
- Enhanced operator safety: Pneumatic valves provide fast flow control while minimizing operator contact with corrosive fluids.
Applications
- Evaluation of acid diversion agents in matrix acidizing
- Laboratory studies of formation damage and permeability enhancement
- Acid injection and core flooding experiments
- Enhanced Oil Recovery (EOR) studies
- Gas, foam, surfactant, polymer, and smart water injection studies
- Measurement of core porosity and permeability
Operation
The system uses a high-pressure injection pump to inject the desired fluid through core samples while controlling back pressure to simulate reservoir conditions.
Three core holders, two back-pressure regulators, and a pressure monitoring system enable accurate analysis of fluid behavior and pressure changes during the experiment.
Technical Specifications
- Maximum Operating Pressure: 700 bar (10,000 psi)
- Maximum Overburden Pressure: 700 bar (10,000 psi)
- Maximum Operating Temperature: 125°C
- Pressure Transmitter Range: Up to 700 bar, with 0.02% full-scale accuracy
- Injection Rate: 0.0005–80 cc/min
- Acid-Contact Material: Hastelloy C-276
- Non-Acid-Contact Material: Stainless Steel 316
- Number of Core Holders: 3
- Core Diameter: 3.8 cm (1.5 in)
- Maximum Core Length: 18 cm (6 in)
- Power Supply: 220 V, 50 Hz
