Technology of in situ harmless treatment on waste drilling mud

A technology for harmless treatment and drilling mud, applied in chemical instruments and methods, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problem of high transportation cost and treatment cost, supernatant Problems such as high pollutant concentration and inability to discharge on-site, etc., to achieve the effect of saving transportation costs, low costs, and low treatment costs

Inactive Publication Date: 2012-06-06
SHAANXI DAZHONG IND
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Problems solved by technology

[0006] At present, the problems with this method are: (1) The supernatant after solid-liquid separation has a high concentration of pollutants and cannot be discharged on

Method used

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  • Technology of in situ harmless treatment on waste drilling mud
  • Technology of in situ harmless treatment on waste drilling mud

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Embodiment Construction

[0015] In order to clearly illustrate the technical features of this solution, the following will describe this solution through specific implementation modes and in conjunction with the accompanying drawings.

[0016] Lay plastic sheeting on the ground of the well site, and the plastic sheeting has a certain slope. Dig a reservoir at the lower end of the plastic sheet, and the volume of the pond is determined according to the volume of water in the drilling mud. The excavated soil is piled up on a plastic sheet and made concave at the top. Add gel breaker to the drilling mud pool. The gel breaker can be used with inorganic coagulant, organic coagulant, or combination of inorganic and organic, such as ferric chloride, polyaluminum chloride, polyacrylamide, etc. The quantity is determined according to the field test. After the agent is added, stirring is required to fully mix the agent and water to improve the effect of solid-liquid separation; an excavator or a water pump ca...

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Abstract

The invention discloses a technology of in situ harmless treatment on waste drilling mud. A technical scheme is as below: based on a solid-liquid separation-solidification technology, land treatment is introduced to realize reutilization. First, solid-liquid separation is carried out; separated water is filtered by soil, and the filtered water can be used for producing cement mortar or concrete during well site standardization construction; filtered loess returns to a mud pool, uniformly stirred with slurry treated with solid-liquid separation and treated with solidification landfill. The invention has characteristics of low cost, good treatment effect and simple operation.

Description

technical field [0001] The invention relates to a process method for harmless treatment of drilling mud. Background technique [0002] A large amount of pollutants will be produced during the exploration and development of oil and natural gas. Waste drilling mud is one of the main pollutants. colloidal suspension system. From the perspective of environmental indicators, the main pollutants are organic matter, suspended matter, acid and alkali, oil and heavy metals. If not treated properly, it will cause great harm to the environment. [0003] At present, the waste drilling mud treatment technologies at home and abroad mainly include: simple treatment and discharge, injection into the annular space of safe formations or wells, centralized treatment, backfilling, pit sealing, land cultivation, solidification, solid-liquid separation, incineration, microbial treatment, etc. Judging from the existing data, waste mud is generally solidified first at home and abroad, and then c...

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Application Information

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IPC IPC(8): C02F9/04C02F11/14
Inventor 安国庆张巨荣
Owner SHAANXI DAZHONG IND
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