High pressure and high temperature multifunctional core displacement test device

instructions

• The function of the instrument

The instrument can conduct the following research under simulated conditions of high temperature and high pressure in the formation:

（1） Research on improving oil recovery efficiency

1. Water drive system

a、 Evacuate saturated water analysis, determine pore volume and saturated water volume;

b、 Analysis of water phase permeability in pure water flooding;

c、 Oil saturation analysis, measuring bound water saturation and oil saturation;

d、 Oil phase permeability analysis, measuring the effective permeability of oil in the presence of bound water;

e、 EOR analysis of water drive;

f、 Analysis of water phase permeability after water flooding, i.e. determination of effective permeability when residual oil is present.

2. Chemical flooding analysis system

a、 EOR analysis of polymer flooding;

b、 EOR analysis of binary and ternary composite drive;

c、 Determination of resistance coefficient;

d、 Measurement of residual resistance system.

（2） Research on formation sensitivity, formation damage assessment, drilling, completion, water injection, production enhancement measures, and well repair operations. The damage caused by foreign substances to the formation and ways to avoid or mitigate such damage.

（3） Research on oil production processes, such as acidification, fracturing, water plugging, and adjusting injection production profiles.

• Main technical parameters

1. Work pressure

Ring pressure:72MPa

Displacement pressure:70MPa

Pressure test accuracy: 0.25% F · S

2. Flow range

0.001ul/min~25ml/min

3. Working temperature

Room temperature~150 ℃, temperature control accuracy ± 0.5 ℃

4. Core specifications

Φ25×150mm，Φ25×300mm，

Pressure: 70MPa Material: HC276

5. Specification of sand filling model

Φ38×300mm

Φ25×300mm

Pressure: 50MPa Material: HC276

1. Power: 6KW, AC 380V power supply
2. The instrument comes with an automatic pressure sensor switching function
3. Automatic switching of dual measuring tubes for oil-water metering and sampling.

• Basic composition and structure of the instrument

• Technical specifications for the components that make up the instrument

1. High pressure constant speed constant pressure pump

model:ISCEO-100

Work pressure: 68.9MPa

Flow regulation range: 0.01ul/min~25ml/min

Using a standard RS232 interface, the operation of the pump is controlled by a computer.

2. Intermediate container

Model: ZR-3 piston structure

Volume: 2000ml, 1000ml

Voltage resistance:70MPa

texture of material:HC276

Used for storing displacement media and serving as a buffer. （Bidders mustHaving a production license for high-pressure steel pressure vessels

3. High pressure and high temperature core gripper

model: TY-4Atype

working pressure:70MPa

Working temperature: 150 ℃

texture of material:HC276

Applicable rock cores:Φ25×25~150mm，Φ25×300mm

4Sand filled model pipe

Specification of sand filling model:Φ38×300

Φ25×300

working pressure:50MPa

texture of material:HC276

Working temperature: Room temperature~150 ℃

Adopting the inner hole roughening process effectively prevents fluid from seeping along the wall, and using a plug compaction method to ensure that the sand does not loosen.

6. Automatic tracking pump for environmental pressure

Automatically track and detect the magnitude of displacement pressure, maintaining the ring pressure at a certain value greater than the displacement pressure.

model:LCOHB-100type

working pressure:70MPa

Tracking error range:0.01MPa

7. Backpressure control system

Used to control the outlet pressure of the core gripper, it consists of a top loading back pressure valve, a high-pressure buffer vessel, and a JB-3 pump.

Backpressure buffer container: ZR-2 type, 1000ml, 50MPa

Back pressure valve:DAL-1Type, top loading type, working pressure 50MPa, flow rate 50ml/min

texture of material: HC276

8. Thermostatic box

Working temperature: 150 ℃± 0.5 ℃

Studio dimensions: 1500 × 700 × 800mm

Front and rear doors, made of stainless steel material. Hot air circulation, using PID regulation temperature control technology, with uniform temperature inside the box and high control accuracy.

Install rolling casters for easy mobility.

9. Measurement system

Pressure measurement: Pressure transmitter DG1300-BZ-B-Z-X/AA type, accuracy 0. 25% F · S, used for measuring the inlet pressure, outlet pressure, ring pressure, and back pressure of rock cores. All pressures are displayed on the WP-C901-20-17-P pressure data display, or can be collected by a computer through the RS232 port on the digital display.

Environmental pressure range:80MPa

Backpressure range: 60MPa

Imported pressure range:80MPa, 10MPa, 1MPa

Export pressure range:80MPa, 10MPa, 1MPa

To ensure the accuracy of pressure measurement, pressure transmitters with different ranges are used to measure the inlet and outlet pressures. The computer automatically controls the pneumatic valve to select transmitters with different ranges for measurement.

Temperature measurement: PT100 measuring probe is used, and XMTA-7512EX-R temperature controller is used to set, control, and measure temperature. The temperature can also be set and controlled by a computer.

Flow measurement: The liquid flow rate is calculated using the balance weighing method.

Balance model: 2202S (Sedolis, Germany)

Range: 2200g

Accuracy: 0.01g

Oil water automatic metering system

Composed of valves, oil and water measuring tubes, liquid level gauges, constant temperature chambers, acquisition and control calculation software, etc., it automatically measures the volume of oil and water.

10. Data collection system

Taiwan MOXAC168H/PCI and MOXAC104H/PCI data acquisition boards are used to timely collect pressure, temperature, flow rate, oil and water volume equivalents.

11. Automatic control system

Computers can control the following external devices:

(1) Injection pump: Through the communication interface of the pump, the computer can control the injection flow rate of the pump.

(2) Temperature: The heating temperature of the constant temperature box can be set and controlled by the computer through the RS232 interface on the temperature controller.

(3) Ring pressure pump tracking: The computer automatically controls the ring pressure pump to track the internal pressure through the PCI847 control board, maintaining a certain pressure difference between the displacement pressure and the ring pressure.

(4) Automatic range switching of pressure transmitter: The computer automatically controls the CV210 pneumatic valve through the PCI847 control board, and automatically selects pressure transmitters of different ranges for measurement according to the displacement pressure to ensure testing accuracy.

12. Application software system data processing

The software runs in the Windows 2000/XP environment and is programmed using VB. The workflow of the instrument is displayed on the interface, which enables human-machine dialogue. After the operator sets the parameters, it should be able to achieve unmanned operation. The computer can automatically collect all parameters such as pressure, temperature, flow rate, oil and water volume, and control the operation of the pump, automatic tracking of the ring pressure pump, and automatic switching of the pressure reversing valve.

The data collected by computers can be processed to generate raw data reports, analysis reports, and curve graphs, while also generating database file formats for users to use flexibly.

Industrial computer: Advantech dual core 2.0G/2G/160G/19 '' widescreen

printer: HP

13. High pressure valve pipeline

High pressure shut-off valve, modelLWFS-2 type, working pressure 70MPa

texture of material: HC276

High pressure pneumatic valve, model CV210, working pressure 70MPa

texture of material:HC276

Pipeline:Φ3 × 0.75 stainless steel seamless pipe

• Main technical features

1. The device adopts a simulated design and can be combined according to different experimental requirements to meet different displacement test requirements.

2. Can simulate geological conditions for high-pressure and high-temperature displacement tests.

3. Key components such as pumps, scales, pneumatic valves, and pressure transmitters are imported to improve testing reliability and accuracy.

4. Realize computer automation control, acquisition, and processing.

5. Track the injection pressure of the ring pressure and maintain a constant pressure difference.

6. The range of the pressure transmitter automatically switches to ensure testing accuracy.

7. The instrument design is reasonable, with a beautiful and elegant appearance, easy operation, and durability.

8. The optional parts are complete, and different specifications of models can be selected according to different testing requirements, making the instrument widely used in various experimental research fields.

6、 Security

The safe operation of the instrument involves the personal safety of the operator and the normal service life of the instrument. The manufacturer reminds the operator to pay attention to the following points:

*All types of instruments and computers must ensure correct power input and be equipped with automatic voltage stabilization protection devices.

*Ensure that all parts of the instrument have good grounding.

*The pressure of each part of the process manifold should not exceed the design pressure, especially not exceed the range of various detection instruments. Extra caution must be taken when using gas pressurization.

*The valve design of the instrument is manual operation. Please pre design the test process according to the test steps. Any valve operation error may lead to the failure of the entire test.

*When operating the system at high temperatures, insulated gloves must be worn to prevent burns.

7、 Installation

All instruments have been installed and tested before leaving the factory. For the convenience of packaging and transportation, the instrument is divided into different parts for packaging. Please carefully refer to the flowchart during installation.

The installation work can also be jointly completed by the factory's technical personnel and the user, so that the user can further familiarize themselves with the instrument and facilitate daily maintenance in the future.

8、 Basic operations

1. Rock sample preparation

⑴. Drilling and cutting of rock samples: Drill the rock sample into cylindrical shapes with a diameter of 25 or 38, cut both ends flat, and ensure that the cutting surface is perpendicular to the axis.

Refer to SY/T5336 for the method of drilling rock samples

⑵. Wash oil for rock samples

The oil washing method shall be carried out in accordance with SY/T5336

⑶. Drying of rock samples

The drying temperature of the rock sample is controlled at 60-65 ℃, and the drying time is 24 hourshAfterwards, every 8hWeigh once, and the difference between the two weighings is less than 10mgRecord the measured quality of the rock sample.

⑷. Measure the geometric dimensions of the rock sample: length (L), diameter (D).

⑸. The determination of gas permeability in rock samples shall be carried out in accordance with SY/T5336.

(6) Extract saturated oil (water) from the rock sample, weigh it wet, and calculate the pore volume of the rock sample.

Soak the saturated rock sample in oil (water) and set it aside.

2. Process preparation

Ensure that the liquid in the storage container and various pumps is sufficient. If it is insufficient, please add it.

3. Installation of rock cores

Take out the pre saturated rock core from the beaker, place it in the clamp rubber sleeve, install the clamp plug, and tighten the rock sample.

4. Apply ring pressure to seal the rock sample

⑴. Manually apply ring pressure

Turn the manual and automatic switches on the control panel to the manual position, turn on the ring pressure pump switch, and when the pressure is increased to the required value, turn off the ring pressure pump switch.

⑵. Automatic ring pressure

Turn the manual and automatic switches on the control panel to the automatic position. In the computer experimental program, click the experiment start button, and the computer will automatically control the start and stop of the ring pressure pump, and track the displacement pressure to maintain the difference between the ring pressure and displacement pressure.

5. Heating up

First, turn on the fan switch of the constant temperature box on the panel, then turn on the heating switch. Set the temperature to be heated on the temperature controller, and the temperature controller will automatically control the constant temperature box to reach the desired temperature.

The temperature setting method of the temperature controller is detailed in the temperature controller user manual

To stop heating, simply turn off the heating switch or set the temperature controller to below the ambient temperature.

6. Experimental evaluation

Various experimental methods are detailed in the industry standards for experimental evaluation.

9、 Maintenance

The parallel flow pump should be cleaned regularly, and for detailed maintenance, please refer to the manual of the parallel flow pump.

Electronic scales should avoid strong vibrations and must not be overloaded. For detailed precautions, please refer to the scale manual.

The computer equipped with this instrument is a dedicated control machine for the instrument. Do not copy software randomly, especially floppy disks of unknown origin. Computer viruses may cause confusion and errors in control and data acquisition.

All parts of the instrument that come into contact with liquids are made of stainless steel, which has a certain degree of corrosion resistance, but it is not a one-time solution. The process manifold needs to be cleaned regularly, especially after injecting acid or other highly corrosive liquids, it should be immediately cleaned with clean water. When the process is not in use for a long time, fill the process manifold with oil or blow dry it with high-pressure air to prevent rust and corrosion.

Long term use can cause normal damage to the process seals, affecting their sealing performance. Therefore, it is recommended to regularly conduct pressure tests on the instruments to ensure their integrity.Replace the seal for the leaked part, and for regular users, a cycle of 3 months is recommended.

If there are any malfunctions that cannot be resolved, please contact our companyOur professional staff will handle it for you, and our company will provide timely and thoughtful service.