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Plasma device for treating oil-based drilling cuttings and auxiliary combustion method

An oil-based drilling cuttings and plasma technology, applied in the direction of plasma, electrical components, etc., can solve the problems of high system requirements, difficult processing while drilling, harsh processing conditions, etc., to improve combustion efficiency, ionization and transportation. The effect of shortened time and convenient operation

Active Publication Date: 2021-03-19
HEFEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the commonly used oil-based drilling cuttings processing method can solve environmental problems to a certain extent, it has high requirements for system equipment, and the processing conditions are relatively harsh, low efficiency, inflexible, and there are high temperature, high pressure or toxic and volatile gas diffusion. situation, and it is difficult to implement processing while drilling

Method used

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  • Plasma device for treating oil-based drilling cuttings and auxiliary combustion method
  • Plasma device for treating oil-based drilling cuttings and auxiliary combustion method
  • Plasma device for treating oil-based drilling cuttings and auxiliary combustion method

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Experimental program
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Effect test

Embodiment 1

[0034] The plasma device for processing oil-based cuttings provided in this embodiment is a high-frequency high-voltage AC dielectric barrier discharge oil-based cuttings processing device under atmospheric pressure, such as figure 1 shown, including:

[0035] Discharge chamber 12, the interior of the discharge chamber is provided with a plate electrode 6, a quartz dielectric plate 8 and a ground electrode 9 in sequence from top to bottom, wherein the plate electrode 6 is connected to the high voltage electrode 2 at the top of the discharge chamber In the high-voltage AC power supply 1 outside the discharge chamber, there is a distance between the high-voltage electrode 2 and the quartz dielectric plate 8, such as 4-8mm, and the distance can be flexibly adjusted according to the discharge situation. The quartz dielectric plate 8 is placed on the ground electrode 9, and the quartz dielectric plate 8 is closely attached to the ground electrode 9, the ground electrode 9 is ground...

Embodiment 2

[0040] A plasma-assisted combustion method for processing oil-based cuttings, based on the plasma device for processing oil-based cuttings described in Embodiment 1, comprising the following steps:

[0041] Step 1, build a plasma device for processing oil-based cuttings, including:

[0042] Step 1.1, connect the high-pressure gas cylinder, mass flow meter and discharge chamber in sequence according to the gas path, and check the air tightness and directionality of the gas path;

[0043] Step 1.2, connect the plasma excitation circuit, connect the high-voltage output terminal of the high-voltage AC power supply to the high-voltage electrode, ground the ground electrode, and set the high-voltage probe, current coil and digital oscilloscope to monitor the voltage and current waveform in real time;

[0044] Step 2, oil-based cuttings treatment, including:

[0045] Step 2.1, spreading the oil-based cuttings to be processed on the quartz medium plate;

[0046] Step 2.2, adjust the...

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Abstract

The invention relates to a plasma device for treating oil-based drilling cuttings and an auxiliary combustion method, and belongs to the technical field of oil-based drilling cuttings treatment. The plasma device comprises a discharge cavity, a plate-type electrode, a quartz dielectric plate and a ground electrode are sequentially arranged in the discharge cavity from top to bottom, the plate-typeelectrode is connected with a high-voltage alternating-current power supply through a high-voltage electrode, a distance is reserved between the high-voltage electrode and the quartz dielectric plate, and the quartz dielectric plate is placed on the ground electrode; oil-based drilling cuttings to be treated are placed on the quartz dielectric plate; and an air inlet and an air outlet are respectively formed in the discharge cavity. The plasma-assisted combustion method for treating the oil-based drilling cuttings comprises the steps of setting up a device and treating the oil-based drillingcuttings. The mineral oil component in the oil-based drilling cuttings can be simply and rapidly treated, no high-pressure environment or toxic and volatile extraction agent is needed in the whole treatment process, and the method has the advantages of being low in cost, simple and convenient in device, flexible, efficient and the like, and is suitable for large-scale industrial production and application.

Description

technical field [0001] The invention relates to a plasma device and an auxiliary combustion method for processing oil-based drilling cuttings, belonging to the technical field of oil-based drilling cuttings processing. Background technique [0002] With the deepening of deep oil exploration and the development of unconventional oil and gas such as shale gas and tight gas, oil-based drilling fluids are usually solved by using the advantages of good rheological properties, fluid loss control performance, lubricity, high temperature resistance, and salt and calcium erosion resistance. Engineering problems, which are beneficial to the stability of the wellbore and the protection of the reservoir, but the treatment of the oil-based mud and cuttings mixture (referred to as oil-based cuttings) produced by the solid control circulation system has become an environmental protection problem. [0003] Oil-based drilling cuttings are generally composed of mineral oil, water, sulfonated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
CPCH05H1/2406
Inventor 丁立健吴永谦章程邵涛赵玉顺
Owner HEFEI UNIV OF TECH