Instructions for using DY-6 high-efficiency multifunctional oil washer

1、 Overview

DY-6 high-efficiency multifunctional oil washing instrument is a new type of fast core oil washing device developed by Haian Petroleum Research Instrument Co., Ltd. This instrument is mainly designed to address the problems of long oil washing cycles and high pollution caused by the volatilization of toxic solvents (benzene) in current domestic oilfield laboratory core oil washing. It has developed unique dynamic fluid oil washing technology and sample sealed drying treatment technology, which greatly shortens the oil washing cycle of the core - washing the oil to the colorless state of alcohol benzene observation only takes 4-10 hours; It only takes 60-110 hours to reach fluorescence level 5. The entire process of loading, washing, and unloading samples involves the emission of a large amount of alcohol benzene into the air - the maximum amount of alcohol benzene volatilization during the entire process is less than 1/300 of that of the fat extractor under the same conditions.

2、 Main performance indicators

1. Scope of application: Suitable for washing oil of different specifications of rock samples such as rock cuttings, core plungers, and large-diameter cores.

1. Effective size of petrous ventricle: φ 300 × 400mm

2. Heating temperature control: normal temperature -150 ℃

3. Design pressure: atmospheric pressure -2MPa

4. Power consumption: ≤ 3Kw

5. Power supply: AC220V ± 10% Frequency: 50Hz ± 5%

3、 Function

1. Oil washing function

Dynamic fluid cleaning oil: quick cleaning method. This is also the core oil washing function of the oil washer.

Atmospheric washing oil: suitable for loose rock samples or rock samples with high mud content.

High temperature and high pressure washing oil: suitable for washing oil in rock samples containing high viscosity oil.

Steam wash oil: suitable for sample washing oil.

2. Automatic soaking function: Soak the rock sample before the sample detection or oil washing machine stops working.

3. Drying function: Dry the rock sample before unloading to avoid the volatilization of toxic reagents.

4. Waste liquid recycling function: recycle and process toxic reagents.

4、 Characteristics and technical indicators

1. Fully functional: including 7 functions such as atmospheric pressure washing oil, high temperature and high pressure washing oil, dynamic fluid washing oil, steam washing oil, automatic soaking, sample drying, waste liquid recovery, etc.

2. High efficiency: The oil washing cycle can be shortened from 25-30 days to 7-15 days (fluorescence level 3); If judged by colorless solvent, only wash the oil for 4-10 hours.

3. Scientifically reasonable structure: The structure is simple and provides the most optimized combination for the implementation of various functions.

4. High safety performance: Design limited temperature and pressure protection devices and power-off protection devices.

5. Easy and simple operation: convenient loading and unloading of samples, and simple conversion of various functions.

6. Low environmental pollution: The recycling and reuse of waste liquid greatly reduces the discharge of waste liquid; The sample drying function avoids a large amount of volatilization of loading and unloading reagents.

5、 Working principle of main oil washing methods

1. Atmospheric wash oil

The principle of oil washing is the same as that of fat extraction, which involves heating and evaporating organic solvents, condensing them through a condenser, and continuously producing clean solvents that "drip" into the rock ventricle to wash the rock core. Then, the solvent soaked in the rock core is sucked into the solvent heating chamber through siphon. This continues to automatically cycle until the core wash oil meets the standard requirements.

2. High temperature and high pressure wash oil

Appropriately increasing the temperature can intensify the movement of solvent molecules and enhance the solvent's ability to dissolve organic matter; High pressure helps the solvent enter the small pores, and at the same time, there is a continuous process of pressurization and depressurization during the solvent distillation cycle, which to some extent performs "throughput" oil washing.

3. Fluid cleaning oil

Causing fluctuations in the solvent in the rock ventricle, intensifying molecular motion, and causing the organic molecules adsorbed on the rock core to rapidly diffuse into the solvent and reach diffusion equilibrium, while also exerting a certain degree of washing effect on the rock core.

6、 Main components of the instrument

The overall structural design of the oil washing instrument is divided into five main parts: solvent chamber, rock chamber, core container, condensation chamber, and control panel. Considering the convenience of operation and minimizing interference between various links, the five main parts of the instrument are designed as relatively independent structures. The structure and names of each part are shown in the diagram.

7、 Operation and usage steps

1. Fill the washing oil solvent (usually a mixture of 4 and 1 alcohol and benzene) into the injection port of the solvent chamber, and the amount of washing oil solvent should reach the top of the lower liquid level tube (the highest part that can be observed, not too low).

2. Take out the core container from the rock ventricle, layer it into the rock sample, and separate each layer with a specially designed tray; Place the core container into the rock chamber; Cover tightly;

3. When the oil washer needs to stop working (such as at night), please open the automatic soaking valve 0.5 hours in advance, and then disconnect the power supply;

4. According to the actual requirements of the experiment, observe or sample the oil washing situation of the rock sample for fluorescence detection;

If the washing oil level meets the experimental requirements, turn off the solvent chamber heating switch; Open the discharge valve to drain the solvent from the ventricle; Turn on the petroventricular heating switch; Set the heating temperature (usually 70 ℃); Turn off the heating power and main power after heating for 4-8 hours;

6. After the rock ventricle cools down, the rock sample can be taken out.

7. The various oil washing functions are mainly set through a combination of hydraulic switches, vent valves, and switches in the internal drainage channel.

8. For the design of temperature controller, upper and lower pressure limits, please refer to the instructions for using temperature controller and pressure display.

*Setting of washing oil and waste liquid recovery functions

Atmospheric wash oil:

①. Close the drainage channels inside the drain valve, automatic soaking valve, recovery valve, and sampling valve, and keep the dynamic liquid gap switch normally open.

②. Open the vent valve

③. Open the condensate water (turn up the water)

④. Turn on the main power supply

⑤. Turn on the heating switch of the kettle body, set the heating temperature and water cut-off protection temperature.

High temperature and high pressure wash oil:

① . Close the drain valve, automatic soaking valve, recovery valve, sampling valve, and internal drainage channel, and keep the dynamic fluid gap switch normally open.

②. Close the vent valve

③ . Turn on the main power supply

④ . Turn on the heating switch of the kettle body, set the heating temperature, water cut-off protection temperature, and pressure upper and lower limit protection (set the water cut-off protection temperature as high as possible to prevent temperature rise during venting and exhaust, which may cause heating to stop).

⑤. When there is a slight pressure, slightly open the vent valve to release and exhaust, and then close the vent valve.

⑥. When the temperature rises to the set value and there is pressure inside the kettle, turn on the condensate and control the water volume.

Fluid cleaning oil:

①. Close the soaking valve, recovery valve, sampling valve, and internal drainage channel.

②. Set the time for the dynamic fluid gap switch, and open and close the valve switch.

③. The specific steps for combining with atmospheric wash oil are shown in atmospheric wash oil steps ② to ⑤.

④. When combined with high temperature and high pressure, the specific steps are described in high temperature and high pressure wash oil ②~⑥.

Rinsing oil:

①. Close the immersion valve, recovery valve, sampling valve, open the internal drainage channel valve, and the dynamic fluid gap switch

②. When combined with atmospheric wash oil, please refer to the specific steps for atmospheric wash oil;

③. When combined with high temperature and high pressure, please refer to the specific steps for high temperature and high pressure wash oil

Waste liquid recycling:

①. Activate the liquid gap switch, vent valve, soak valve, and close all other valves;

②. Refer to steps ③ to ⑤ of atmospheric pressure oil washing.

8、 Precautions

1. The oil washer must perform all functions except for dynamic fluid cleaning, and the dynamic fluid switch must be in the normally open state;

2. Regularly recycle the solvents in the solvent chamber to prevent excessive viscosity from affecting the oil washing effect;

3. The oil washing method should be selected as much as possible based on the actual situation of the rock sample.

4. For loose samples, it is recommended to use non moving liquid atmospheric pressure method for oil washing.

5. The amount of solvent in the solvent chamber must not be lower than the height of the electric heating tube, otherwise it will burn out the electric heating tube and even cause unsafe factors

6. The instrument must have a safe and reliable grounding.

7. Before connecting the "main power" each time, please place either of the "open valve" or "close valve" switches on the control panel in the "off" state (the two switches should not be in the "on" state at the same time), otherwise it is easy to cause a short circuit and burn out the equipment.

This should be particularly noted every time the "main power" is turned on.