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Oil-gas field oil-containing sludge treatment method

A treatment method and oil and gas field technology, applied in the direction of sludge treatment, water/sludge/sewage treatment, hydrocarbon oil treatment, etc., can solve the problems of complicated treatment process, difficult recovery and reuse of carbon dioxide, high treatment cost, etc., and achieve the treatment process Simple, high recovery rate of crude oil, low treatment cost

Inactive Publication Date: 2019-01-22
KARAMAY ZHONGKE OILFIELD SERVICES NEW TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dissolved equilibrium pressure of carbon dioxide in this method is 0.5-8MPa, which belongs to the pressure operation, and the recovery and reuse of carbon dioxide is also relatively difficult, the treatment process is complicated, and the treatment cost is high.

Method used

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  • Oil-gas field oil-containing sludge treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The oily sludge samples come from the sludge pool of an oilfield in Xinjiang. The oil field stores the oil sludge generated during crude oil production in a sludge pool of 80m×80m×2.5m. After years of discharge, the sludge pool has formed a nearly 2m deep oily sludge pool. , water, mud and sand oily sludge emulsified suspended matter;

[0023] A treatment method for oily sludge in an oil and gas field according to the present invention, the treatment device for oily sludge involved in the method is composed of a microwave reaction chamber 1, a waveguide 2, a microwave generator 3 and a power supply 4, the microwave reaction chamber 1 The waveguide 2 is connected to the microwave generator 3, the microwave generator 3 is connected to the power supply 4, and a microwave protection device is arranged in the middle of the waveguide 2. The specific operation is carried out according to the following steps:

[0024] a, turn on the power supply 4, adjust the power of the micro...

Embodiment 2

[0030] The treatment device of oily sludge involved in this embodiment is carried out according to embodiment 1, and the specific operation is carried out according to the following steps:

[0031] a, turn on the power supply 4, adjust the power of the microwave generator 3 to a set value of 1.5kW, and the frequency is 915 ± 50MHz, add catalyst sodium hypochlorite 100ppm to the oily sludge and fully stir and mix, the power of the microwave generator 3 is continuous. tuned;

[0032] b. After the microwave generator 3 runs stably, put the ceramic cup containing 500ml oily sludge container into the microwave reaction chamber 1;

[0033] c. After 60s of microwave irradiation, turn off the power supply 4, open the door of the microwave reaction chamber 1, and take out the sample, wherein the microwave irradiation time is inversely proportional to the power of the microwave;

[0034] d. Let the sample stand for 5 minutes at normal temperature and pressure, and the oily sludge in th...

Embodiment 3

[0037] The treatment device of oily sludge involved in this embodiment is carried out according to embodiment 1, and the specific operation is carried out according to the following steps:

[0038] a, turn on the power supply 4, adjust the power of the microwave generator 3 to a set value of 1.5kW, and the frequency is 915 ± 50MHz, add catalyst potassium permanganate 200ppm to the oily sludge to fully stir and mix, the power of the microwave generator 3 is continuously adjustable;

[0039] b. After the microwave generator 3 runs stably, put the quartz cup containing the 500ml oily sludge container into the microwave reaction chamber 1;

[0040] c. After 60s of microwave irradiation, turn off the power supply 4, open the door of the microwave reaction chamber 1, and take out the sample, wherein the microwave irradiation time is inversely proportional to the power of the microwave;

[0041] d. Let the sample stand for 5 minutes at normal temperature and pressure, and the oily s...

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Abstract

The invention relates to an oil-gas field oil-containing sludge treatment method. According to the method, the used oil-containing sludge treatment apparatus comprises a microwave reaction chamber, awaveguide pipe, a microwave generator and a power source; the stable emulsifying state of oil-containing pollution is destroyed by using a microwave catalytic oxidation method, and part of residual chemical agents in the oil-containing sludge can be subjected to a chemical reaction, such that demulsification and viscosity breaking are achieved, and the three-phase separation of oil, water and mudsand is achieved; the pollutants in the oil-containing sludge are mainly transferred into a water phase, the water is discharged into a sewage treatment system so as to be treated, and the crude oil is recycled; and the mud sand phase has extremely low oil content and extremely low content of other pollutants, can be used for paving various internal roads for oil field production, well sites and solid waste yards, and can be used as natural pit filling materials. According to the present invention, the method has advantages of simple treatment process, low treatment cost, safety, environmentalprotection, high recovery rate of crude oil, resource utilization of mud sand, and the like.

Description

technical field [0001] The invention relates to a method for treating oily sludge in oil and gas fields, and belongs to the technical field of environmental protection. Background technique [0002] Petroleum is the most important energy source in today's society. Industry, national defense and daily life are inseparable from petroleum. However, oily sludge is produced in the process of crude oil extraction and gathering and transportation. Oily sludge is a heterogeneous multiphase dispersion system formed by mixing oil, water, and soil, including wastewater settled oily sludge, and oil polluted by pipeline punctures. Mud and sand, oily mud and sand in the settlement tank of the joint station, etc. Because oily sludge contains crude oil, if it is not recycled and treated, it will cause a waste of resources on the one hand, and more importantly, oily sludge is a hazardous solid waste, and direct discharge will pollute the surrounding farmland, water environment and air , en...

Claims

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Application Information

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IPC IPC(8): C02F11/06C02F11/00C10G1/00C02F101/32
CPCC02F11/00C02F11/06C02F2101/32C10G1/00C10G2300/1003
Inventor 刘向阳卞卫国
Owner KARAMAY ZHONGKE OILFIELD SERVICES NEW TECH CO LTD
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