Bacillus CJ-3 and application thereof

CN115927031BActive Publication Date: 2026-06-19CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2021-09-22
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional inorganic and organic alkalis in oilfield water quality modification technologies result in large amounts of sludge and severe scaling, affecting oilfield production safety and causing environmental pollution.

Method used

A strain of Bacillus CJ-3 and its fermentation broth were used to adjust the pH value of oilfield produced water through a microbial alkalization process, generating alkaloids to alleviate corrosion and scaling and reduce sludge formation.

Benefits of technology

It effectively improves the compliance rate of produced water treatment in oil fields, reduces sludge volume, alleviates corrosion and scaling, and is environmentally friendly.

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Abstract

This invention relates to a strain of Bacillus sp. CJ-3 and its applications. The strain of Bacillus sp. CJ-3 has the accession number CGMCC No. 22970. The above-mentioned Bacillus sp. is used in petroleum extraction, in the treatment of produced fluids in oil fields, and in the modification treatment of produced water in oil fields. This invention has the following beneficial effects: (1) This invention can produce alkaloids, effectively modifying oilfield wastewater, controlling corrosion, inhibiting scaling, purifying water, and improving the compliance rate of treated produced water as injection water. (2) The process of producing alkaloids in this invention is mild and slow-release, and will not form localized high concentrations of alkali. The scaling rate during pH adjustment is slow, and the particle size is small, which can effectively solve the problems of large sludge volume and severe scaling in the application of traditional water quality modification technologies; (3) The Bacillus sp. CJ-3 of this invention is an intrinsic environmental substance and will not cause environmental pollution during use.
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