Yangtze University

China University of Geosciences (Beijing)

Yuehui She

Fan Zhang

Yang Li

Fei Li

Zhi Zhang

Gaoming Yu

Wenda Zhang

Yangyang Feng

Hao Dong

Shaojin Yi

Shanshan Sun

Linqi Hu

Puyong Yao

Anying Zheng

Xiaonan Li

Lujun Chai

Shengsheng Li

Qing Feng

Dujie Hou

Disclosed is a method for reducing pressure and increasing injection by continuous operation system of biological acid acidification and nano coating, specifically including composition and preparation method of biological acidizing agent and nano coating agent. The method for reducing pressure and increasing injection by continuous operation system of biological acid acidification and nano coating of the present disclosure is able to effectively dredge the stratum water flow channel, reduce the water flow resistance, and achieve the effect of high-efficiency pressure reduction and injection increase of the water injection well.

Method for reducing pressure and increasing injection by continuous operation system of biological acid acidification and nano coating

The present disclosure relates to the technical field of application of bioengineering technology in microbial oil recovery, and discloses astrain and preparation thereof and a method for preparing surfactant, and use thereof. Thestrain is deposited in the China General Microbiological Culture Collection Center under the accession number CGMCC No. 9983. Theand its preparation may effectively enhance the crude oil recovery; the method for preparing the surfactant allow the lipopeptide biosurfactant to have good physical properties, effectively reduce the surface tension, and have good emulsifying performance for petroleum, various hydrocarbons and lipids.

, preparation thereof, method for preparing surfactant and use thereof

A biochemical viscosity reducer for heavy oil and a preparation method thereof. The viscosity reducer includes:-fermented mixed lipopeptide solution: 30 to 60 parts; compound biological enzyme: 15 to 30 parts; plant-based nonionic surfactant: 10 to 20 parts; antibacterial agent: 1 to 5 parts; stabilizer: 1 to 5 parts; and alcohol solvent: 10 to 20 parts; where, the above components are measured by mass. The preparation method includes: step 1: adding 30 to 60 parts of a-fermented mixed lipopeptide solution, 15 to 30 parts of a compound biological enzyme, 10 to 20 parts of a plant-based nonionic surfactant, and 1 to 5 parts of a stabilizer to a reactor; and step 2: adding 1 to 5 parts of an antibacterial agent and an alcohol solvent to the reactor, and stirring a resulting mixture for 60 min to 120 min.

Biochemical viscosity reducer for heavy oil and preparation method thereof

The invention provides a quick method for detecting the genus ofin samples from oil reservoirs, which comprise: collecting samples from oil reservoirs; inactivating microbes except for spore-formingin the samples through high temperature; collecting spores from the samples; incubating the collected spores in a medium, and stimulating to resurrectunder in situ temperatures of the oil reservoirs; detecting the resurrectedin the cultures using molecular biological techniques. The present invention provides an effective method to detect the genus ofin samples from oil reservoirs, which is conducive to the discovery of the functionalfor microbial enhanced oil recovery (MEOR) and to revealing the ecosystem ofin oil reservoirs.

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Growing community of inventors

Wuhan, China

Yuehui She