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中文版Recently, the reporter walked into the microbial oil recovery technology laboratory of the experimental center of Daqing Oilfield Exploration and Development Institute, and saw a bottle of "oil baby" with black liquid arranged neatly in a warm "cradle" which swayed at a uniform speed and slept soundly. Originally, this laboratory is carrying out the research of using microorganisms to degrade crude oil to produce natural gas.
It is understood that Daqing Oilfield, as the largest oil field in China, has experienced 60 years of high-speed development along the way from water flooding, polymer flooding and composite flooding. The oil content of underground reservoirs has been decreasing year by year, and it is becoming more and more difficult to use effectively. Microbial oil recovery technology is to convert 30% of crude oil remaining in underground rock cracks after three or four times of oil recovery into natural gas, and to develop exhausted oilfields into gas fields so as to make full use of petroleum resources.
According to Wang Rui, Senior Engineer of the Second Section of EOR Research, Daqing Exploration and Development Research Institute, microbial oil recovery technology is a four-stage oil recovery technology that utilizes microbial metabolites (mainly bioactive substances, organic solvents, biopolymers, gases, etc.) and microbial activities (such as the role of cell bodies, biodegradation, etc.) to increase production or enhance oil recovery. This technology has no pollution to the environment and is a real green environmental protection oil production technology. The transformation of carbon source from carbohydrate to hydrocarbon not only enhances the adaptability to reservoir, but also greatly reduces the cost. It breaks through the traditional judgment of microbial oil recovery in the world, determines the process of microbial degradation of crude oil, and uses technical means to control the degradation degree, which greatly improves the effect of microbial oil recovery.