Oil-based drilling cutting treatment device and oil-based drilling cutting treatment method

An oil-based drilling cuttings and processing device technology, applied in chemical instruments and methods, transportation and packaging, solid waste removal, etc., can solve problems such as high efficiency and low cost, avoid secondary pollution, solve high cost, good degradation effect

Inactive Publication Date: 2021-07-16
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an oil-based drilling cuttings processing device and an oil-based drilling cuttings processing method to solve the problems of low cost and high efficiency in the prior art

Method used

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  • Oil-based drilling cutting treatment device and oil-based drilling cutting treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Table 1 Properties of oil-based drilling cuttings

[0044] nature Oil content (%) Moisture content (%) Solid content (%) Oil-based cuttings A 14.75 5.10 80.15

[0045] Put the oil-based drilling cuttings with the parameters shown in Table 1 into the homogenizing tank. The oil-based drilling cuttings and water are mixed and diluted at a ratio of 1:2.5. The time is 5-10 minutes. After mixing, it is sent to the ultrasonic cleaning tank by mud pump for cleaning, and the production water is supplemented according to the ratio of oil-based drilling cuttings and water in the ratio of 1:15 to 18, and the power ultrasonic generator is turned on. The stirring blade speed of the ultrasonic cleaning tank is 40r / min. At ~45°C, wash for 15-20 minutes, and then send it to a three-phase centrifuge through a mud pump for three-phase separation of solid phase, oil phase and water phase. The speed of the three-phase centrifuge is 1800-2000r / min. The temperatu...

Embodiment 2

[0049] Table 3 Properties of oil-based drilling cuttings

[0050] nature Oil content (%) Moisture content (%) Solid content (%) Oil-based cuttings B 12.38 6.24 81.38

[0051] Put the oil-based drilling cuttings with the parameters shown in Table 3 into the homogenizing tank. The oil-based drilling cuttings and water are mixed and diluted at a ratio of 1:3.5. The time is 8-10 minutes. After mixing, it is sent to the ultrasonic cleaning tank for cleaning through the mud pump, and the power ultrasonic generator is turned on. The stirring blade of the ultrasonic cleaning tank rotates at a speed of 45r / min, and is cleaned at a temperature of 48-50°C for 15-20 minutes. Then it is sent into a three-phase centrifuge through a mud pump for three-phase separation of solid phase, oil phase and water phase, and the rotation speed of the three-phase centrifuge is 2200-2500r / min. The temperature of the microbial degradation tank was controlled within the range ...

Embodiment 3

[0055] Table 5 Properties of oil-based drilling cuttings

[0056] nature Oil content (%) Moisture content (%) Solid content (%) Oil-based cuttings C 15.74 4.32 79.94

[0057] Put the oil-based drilling cuttings with the parameters shown in Table 5 into the homogenizing tank. The oil-based drilling cuttings and water are mixed and diluted at a ratio of 1:4.5. The stirring blade speed in the homogenizing tank is 60-80r / min. 3 to 5 minutes. After mixing, it is sent into the ultrasonic cleaning tank through the mud pump, the power ultrasonic generator is turned on, the rotation speed of the stirring paddle is 45r / min, and the cleaning is performed at a temperature of 45-50°C for 12-15 minutes. Then it is sent to a three-phase centrifuge through a mud pump for three-phase separation of solid phase, oil phase and water phase. The centrifuge speed is 1500-1800r / min. The temperature of the microbial degradation tank was controlled within the range of 37°C...

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Abstract

The invention provides an oil-based drilling cutting treatment device and an oil-based drilling cutting treatment method. The oil-based drilling cutting treatment device comprises a homogenizing tank, an ultrasonic cleaning tank, a three-phase centrifugal machine and a microbial degradation tank; the homogenizing tank is used for diluting oil-based drilling cuttings; an inlet of the ultrasonic cleaning tank communicates with an outlet of the homogenizing tank, and the ultrasonic cleaning tank is used for cleaning the diluted drilling cuttings; an inlet of the three-phase centrifugal machine communicates with an outlet of the ultrasonic cleaning tank; and the microbial degradation tank is used for carrying out microbial degradation on solid-phase residues centrifuged by the three-phase centrifugal machine. Through the technical scheme, the problem that the requirements of low cost and high efficiency cannot be met in the prior art can be solved.

Description

technical field [0001] The invention relates to the technical field of petroleum production, in particular to an oil-based drilling cuttings processing device and an oil-based drilling cuttings processing method. Background technique [0002] With the increasing development of global oil, natural gas, shale gas, tight gas and other energy sources, in recent years, due to the outstanding advantages of oil-based mud for stabilizing well walls, oil-based drilling fluid technology has become more and more popular in my country. Receive attention. During the use of oil-based drilling fluid, a large amount of oily drill cuttings will be produced, including complex components such as oil, clay, various chemical treatment agents, weighting materials, oily sewage and drill cuttings. Oil-based drilling cuttings have been listed as national hazardous waste because they contain pollutants such as petroleum hydrocarbons, heavy metals, and organic matter. If they are discharged directly w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCB09B5/00B09B3/80
Inventor 邵志国许毓李兴春刘龙杰孙静文
Owner BC P INC CHINA NAT PETROLEUM CORP
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