Method for remedying oil pollution by unitedly using air shatter crack and microorganism and device thereof

A technology of oil pollution and joint restoration, applied in the restoration of contaminated soil, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problem of rising operating costs, increased land occupation and energy consumption, and increased equipment process flow, etc. problems, to save investment, save operating costs, improve processing efficiency and applicability

Active Publication Date: 2012-09-05
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology

[0010] However, in the actual application of on-site repair, there is no feasible combined repair process and specific implementation plan.
Moreover, the superimposed application of the two technologies will inevitably increase the land occupation and energy consumption while improving the governance effect, and increase the equipment process at the same time, making it difficult to operate, manage and maintain, which will greatly increase the overall operating cost

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  • Method for remedying oil pollution by unitedly using air shatter crack and microorganism and device thereof
  • Method for remedying oil pollution by unitedly using air shatter crack and microorganism and device thereof
  • Method for remedying oil pollution by unitedly using air shatter crack and microorganism and device thereof

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Embodiment Construction

[0038] The present invention describes the present invention in detail in conjunction with the accompanying drawings.

[0039] The oil-contaminated air vibration cracking assisted microbial joint repair method, the specific technical scheme is as follows:

[0040] 1) Use the pneumatic fracturing method to vibrate and crack the oil-contaminated soil layer, insert a tubular probe into the borehole of the oil-contaminated soil layer, connect the high-pressure nozzle at a distance of about 2-3 meters from the ground, and inject compressed air into the tubular probe, Crack the soil and repeat until the entire contaminated area has a soil vibrocrack layer;

[0041] The pressure of the compressed air in step 1) is 100-150psi, each duration is 20-30 seconds, and the intermittent time is 10 minutes. The pressurized air stream contains sufficient oxygen, which promotes the growth of native aerobic microorganisms. If necessary, repeat the above steps several times to achieve a satisfacto...

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Abstract

The invention relates to environmental protection of oil and gas fields and provides a method for remedying oil pollution by unitedly using air shatter crack and microorganism and a device thereof. The method comprises the following steps: firstly, carrying out the air shatter crack on soil layer polluted by oils, removing pollutants in a vaporphase by using a vacuum pump, and opening a high-pressure sprayer to evenly disperse and inject culture mediums or microorganism into the soil; and the outlet of a central extraction well is connected with the vacuum pump, continuous airflows are extracted in the extraction well by the vacuum pump, and the balance of oxygen is supplied by peripheral wells for the purpose of keeping the continuous supply of the oxygen in soil pore space to remove the pollutants in the vaporphase. The invention also provides the device which is composed of an air compression engine, the vacuum pump, a valve, the high-pressure sprayer, a feed tank and a mixed tank. Compared with the homogeneous processing techniques, the invention saves cost by about 40-50% and economizes running cost by 20-35%; in addition, maintenance and management cost of the invention is 40-75% of that of the homogeneous processing techniques.

Description

technical field [0001] The invention relates to oil and gas field surface engineering technology and environmental protection technology in the petroleum industry, in particular to a combined repair method and device for soil and groundwater oil-polluted air cracking and microbes. Background technique [0002] At the same time of oil production, the pollution of its process and products to the environment has become more and more serious, which has endangered human health and survival. As a typical negative product accompanying the petroleum industry, the organic pollution of soil and groundwater produced in the production, transportation, and storage of petroleum products has gradually attracted great attention from the industry and even the entire society, and has become a worldwide environmental problem. [0003] When oil leaks into the underground layer, it often exists on the surface of the water in the form of free phase. The non-aqueous phase liquid can be bound by t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/00B09C1/10C02F9/14C02F3/34
Inventor 余晖黄国和郭绍辉王占生邹运秦肖生
Owner BC P INC CHINA NAT PETROLEUM CORP
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