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Harmless oil field mud and sand treating method and apparatus

A harmless treatment, oil sludge sand technology, applied in the direction of sludge treatment, biological sludge treatment, grease/oily substance/suspton removal device, etc., can solve the problem that the mature treatment process has not yet been formed and cannot be directly applied to oilfield oily mud sand treatment and other problems, to achieve the effect of stable treatment effect, convenient operation and simple equipment

Inactive Publication Date: 2007-07-11
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.

Method used

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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 the examples: referring to accompanying drawings 1 and 2, a kind of harmless treatment method of oilfield oil sludge sand, comprises the treatment of oilfield oil sludge sand slurrying pretreatment, the treatment of chemical pretreatment device, sedimentation treatment and oil-water Separation treatment, the oilfield oil sand after the above treatment is subjected to biological treatment, water, biological treatment bacteria liquid and biological treatment nutrient are added to the oil sludge sand, and the biological treatment device is used to make the bacteria multiply, metabolize, peel off, and degrade the crude oil in the oil sludge sand . Considering economical and practical factors, the ratio of oil sludge sand to water in the oil sludge sand slurry pretreatment is preferably any one of 1:1 to 3. Of course, the ratio of oil sludge sand to water can also be increased or reduced, such as ...

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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 Patents(China)
IPC IPC(8): C02F11/04C02F9/04C02F9/02C02F1/40C02F11/02
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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