Abstract: The laboratory of Enhanced Oil Recovery of our university, belonging to the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, was established in 1984. It is a part of the key laboratory of Enhanced Oil Recovery of CNOOC. The Enhanced Oil Recovery of chemical flooding technology is one of the important research directions of the Petroleum Development Engineering which is of the national key subject and Applied Chemistry which is of the provincial key subject. Its research emphases are basic theory, application basic theory, study on oilfield application technology, and the development, manufacture and field service of chemical for eor. The scientific research thematic report “Playing the Advantage of Subject, Constructing Study Platform, Condensing Team Strength, Accelerating Technical Progress” systematicly introduced the research status of Enhanced Oil Recovery in our university to readers from “the Research Team, the Research Conditions and Characteristics, the Undertaken Research Task, the Typical Achievement——the Special Polymer of Enhanced Oil Recovery of Chemical Flooding and Its Application Research”.
“The Study and Application of New Mode of Effective Development of Offshore Heavy Oil Field”, by Dr. Zhou Shouwei, the deputy general manager of China National Offshore Oil Corporation (CNOOC), posed the new model of developing offshore heavy oil reservoir from the view of increasing production rate. Adopting the new model, recovery of offshore heavy oil reservoir can be increased by 10% or more, so that the utilization of oil and gas can be increased obviously. It has great significance to China which is lack of oil.
“Characteristic of Flow Through Porous Media in Low Permeability Reservoir with Eolotropy”, by Shi Cheng’en, the doctor of Chinese Academy of Sciences, and other authors, comprehensively considered the effect that the threshold pressure gradient and stress sensitivity in low-permeability reservoir with eolotropy makes on the characteristic of unsteady flow, posed the approximate solution of low-velocity non-Darcy flow considering the effect of the threshold pressure gradient and stress sensitivity in similar reservoir. This paper has significance on guiding how to determine the movement rule of dynamic boundary, single well control size, variable production of oil well, and reservoir pressure distribution.
“The Mobility Control Capacity of Hydrophobic Associating Polymer in High Permeability Porous Media”, written by Ye Zhongbin, the doctoral tutor, and other authors for this periodical, studied the mobility control capacity of hydrophobic associating polymer and linear polymer with high molecular weight and without associating capacity, which achieved the objective of improving its mobility control capacity in high-permeability porous media through reducing the demand of the molecular weight and appropriately increasing the amount of hydrophobic singles, e.g. improving the associating capacity of hydrophobic associating polymer solution.
Finished by Dr. Wan Bo and other authors, China University of Petroleum, the Operation Station Diagnosis of Rotor Based on Swivel Relative Vibration Energy analyzed qualitatively the relation curve between the rotor shaft of oil transfer pump unit operation situation and relative vibration energy of swivel double-ended points, and it similar to “the bathtub curve”. The multi-measuring points, multi-channels vibration signals of axle centre trail is used to integrate three-dimension axle centre trail, based on this, the relative vibration energy of swivel double-ended points is obtained, which includes two index information, the phase and axle centre trail radius. It is proved that the relative vibration energy of swivel double-energy index can be used to analyze and diagnose the operation situation of rotor system.
The series of articles “Hydrophobically Associating Water-Soluble Polymer with High-Ratio Inter-Molecular Association(III)”, by Prof. Li Aihui and Prof. Guo Yongjun, studied the concentration and shear thinning behavior of ANPE-HAWP solution, as well as ability of resisting temperature and salt.
Multi-scale science have achieved important progress, it is the hot and frontier of many subjects’ studies. “The multi-Scale science and the Application in Oil and Gas Field Development”, by Prof. Kang Yili, the doctoral tutor, pointed out that oil and gas reservoirs are complex multi-scale systems. From the point view of multi-scale science, production of oil and gas are very complicated processes with spatial-temporal scales and series coupling processes in percolating channels such as pore throats and fractures. Exemplified by tight sand gas reservoirs, multi-scale phenomena in the unconventional gas reservoir development and its effect and countermeasures on gas development are discussed.
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