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Drilling waste sulfonated mud treatment method

A treatment method and slurry technology, which can be applied in the fields of sludge treatment, oxidation treatment of sludge, chemical instruments and methods, etc., and can solve problems such as inability to eliminate, pollution, and surrounding soil pollution.

Inactive Publication Date: 2020-04-14
西安华盛坤泰能源环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fluidity and dispersion of drilling production, the sulfonated mud pollutes a large area and a wide area; at the same time, because the content of soluble salts, chemical oxygen demand, pH, and heavy metals in the sulfonated mud is much greater than the surrounding environment, the surrounding soil and underground (Table) Serious water pollution, affecting the normal growth of surrounding animals and plants
[0004] With the improvement of people's living standards and the strengthening of environmental protection awareness, the environmental hazards and pollution of waste sulfonated mud from drilling have attracted much attention; The environmental pollution caused by chemical mud is enlarged, but it cannot be eliminated

Method used

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  • Drilling waste sulfonated mud treatment method
  • Drilling waste sulfonated mud treatment method
  • Drilling waste sulfonated mud treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Collect the waste sulfonated mud from drilling, and adjust the pH value of the mud to 7 with dilute sulfuric acid;

[0035] 2) Add 30wt% concentration of hydrogen peroxide to the pH-adjusted mud, and the addition is 0.8% of the mud volume to oxidize the mud;

[0036] 3) Add EDTA of 0.6wt% concentration in the oxidized mud, and the addition is 4% of the mud volume, so that heavy metal ions in the mud form stable complexes;

[0037] 4) Add the ferrous chloride of 15wt% concentration in the mud that forms stable complex, add-on is 20% of mud volume, mud is carried out gel breaking flocculation;

[0038] 5) Use a vacuum belt filter for solid-liquid separation.

Embodiment 2

[0040] 1) Collect the waste sulfonated mud from drilling, and adjust the pH value of the mud to 6 with citric acid;

[0041] 2) adding permanganate of 40wt% concentration to the mud after pH adjustment, the addition is 1% of the mud volume, and the mud is oxidized;

[0042] 3) Add TMT of 0.8wt% concentration in the oxidized mud, and the addition is 5% of the mud volume, so that the heavy metal ions in the mud form a stable complex;

[0043] 4) adding 0.4wt% polyethylene oxide to the mud forming a stable complex, the addition is 15% of the mud volume, and the mud is broken and flocculated;

[0044] 5) A centrifuge is used for solid-liquid separation.

Embodiment 3

[0046] 1) Collect the waste sulfonated mud from drilling, and adjust the pH value of the mud to 9 with organic phosphoric acid;

[0047] 2) Add 50wt% concentration of H in the pH-adjusted mud 2 o 2 , the addition amount is 0.5% of the mud volume, and the mud is oxidized;

[0048] 3) Adding 0.2wt% concentration of maleic acid acrylic acid copolymer to the oxidized mud, the addition is 2% of the mud volume, so that the heavy metal ions in the mud form a stable complex;

[0049] 4) adding aluminum sulfate at a concentration of 20wt% to the mud forming a stable complex, the addition is 10% of the mud volume, and the mud is broken and flocculated;

[0050] 5) A plate and frame filter press is used for solid-liquid separation.

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Abstract

The invention provides a drilling waste sulfonated mud treatment method, and belongs to the field of petroleum and natural gas. The method comprises the following steps: collecting drilling waste sulfonated mud, regulating the pH value of slurry by using a pH regulator; adding an oxidizing agent into the slurry after pH adjustment so as to oxidize the slurry; adding a heavy metal stabilizing agentinto the oxidized slurry to enable heavy metal ions in the slurry to form a stable complex; adding an inorganic flocculant or an organic flocculant into the slurry containing the stable complex, carrying out gel breaking and flocculating in the slurry, and carrying out solid-liquid separation. By adding a specific amount of the substances mentioned above, the drilling waste sulfonated mud is subjected to oxidation, complexing reaction, flocculation, solid-liquid separation and the like, so that harmful components of the sulfonated mud can be thoroughly removed, and the pollution of the sulfonated mud to the environment is eliminated.

Description

technical field [0001] The invention belongs to the field of petroleum and natural gas, and in particular relates to a treatment method for drilling waste sulfonated mud. Background technique [0002] The drilling mud of the sulfonated mud system is a kind of water-based mud with drilling mud additives such as sulfonated phenolic resin (SMP), sulfonated lignite (SMC), and sulfonated baked gum (SMK) as the main treatment agent. It has the advantages of excellent high temperature resistance, strong filtration loss control ability and low cost. [0003] In recent years, due to the increase of drilling depth, the use of sulfonated mud in the drilling process has become more and more highly respected; in the process of oil and gas exploitation, drilling and workover, a large amount of drilling waste sulfonated mud will be produced, which will pollute the surrounding environment more and more. serious. Due to the fluidity and dispersion of drilling production, the sulfonated mud...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/06C02F11/143C02F11/145C02F11/147C02F101/20
CPCC02F11/00C02F11/06C02F2101/20C02F11/143C02F11/145C02F11/147
Inventor 王岳王胜强张建甲宁阳朱咪张凡
Owner 西安华盛坤泰能源环保科技有限公司
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