Harmless oil field mud and sand treating method and apparatus

A technology for harmless treatment of oily sludge and sand, applied in the direction of sludge treatment, biological sludge treatment, chemical instruments and methods, etc., can solve the problems that cannot be directly applied to the treatment of oily sludge and sand in oil fields, and has not yet formed a mature treatment process. Stable effect, convenient operation and simple equipment

Inactive Publication Date: 2005-09-28
OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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Problems solved by technology

The harmless treatment technology of oily mud sand in China is still in the research stage, and a mature treatment process has not yet been formed; the treatment of oily mud sand in foreign countries mainly adopts road paving, incineration, and bioremediation of polluted soil
Bioremediation technology is the current development trend at home and abroad, but bioreactors are only used in the treatment of oil-contaminated soil, and cannot be directly applied to the treatment of oily mud sand in oilfields.

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  • Harmless oil field mud and sand treating method and apparatus
  • Harmless oil field mud and sand treating method and apparatus

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Embodiment Construction

[0009] The present invention is described in further detail below in conjunction with embodiment: see appendix figure 1 and 2 , a method for harmless treatment of oilfield oil sludge sand, including oilfield oil sludge sand mud pretreatment, chemical pretreatment, sedimentation treatment and oil-water separation treatment, the oilfield oil sludge sand after the above treatment is subjected to biological treatment, and water and biological The treatment bacteria solution and biological treatment nutrients are added to the oil sludge sand, and the crude oil in the oil sludge sand is stripped and degraded through the reproduction and metabolism of bacteria. Considering economic and practical factors, the ratio of oil sludge sand to added water is preferably any one of 1:1-3, and of course the ratio of oil sludge sand to water can also be increased or reduced, such as 1:1-5. The water temperature is any one of 30°C to 40°C, and the added water can be clean water or oilfield sewag...

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Abstract

The harmless oil field mud and sand treating method and apparatus is used in treating various kinds of oily mud and sand produced in oil field production. The treating method includes pre-treating oily mud and sand into slurry, chemical pre-treatment, deposition treatment, oil-water separation treatment, and biological treatment to strip off and degrade raw oil in oily mud and sand with bacteria. The treating apparatus includes treating tank, automatic temperature controller, chemical adder, stirrer and aeration unit connected together. The present invention is simple and short in treating period and has no secondary pollution.

Description

technical field [0001] The invention relates to a treatment process and a treatment device for waste oil mud sand in an oil field, in particular to a harmless treatment method and a treatment device for oil mud sand in an oil field, which are used for treating oil mud sand produced in various oil field production processes. Background technique [0002] Oilfield oil mud and sand mainly come from the water injection development process. As the water content of the produced fluid becomes higher and higher, more and more formation mud and sand are produced from the produced water, which are deposited at the bottom of dehydration tanks, oil storage tanks, and waste oil tanks. A large amount of oil sludge is produced after tank cleaning; in addition, oil spills and contaminated soil caused by equipment perforation, operation, and oil theft damage during oilfield production are collected to form oil sludge. The composition of oilfield oil sand is complex. The oil content is high,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F11/02
CPCY02W10/20
Inventor 陈勇汪卫东王新耿雪丽高光军谭云贤岳胜辉段传慧陈建斌王静
Owner OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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