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
CN1673125AInactive Publication Date: 2005-09-28OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
OIL EXTRACTION TECH INST OF SINOPEC SHENGLI OILFIELD
Publication Date
2005-09-28
Estimated Expiration
Not applicable · inactive patent

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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.
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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,...

Claims

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