Fluid Resource Energy and Environment    FREE LAB




Geo-energy reservoir modeling and simulation including oil/gas/thermal water


In view of the complex flow mechanism, the interfacial effects between fluid and rock, the low average recovery rate, and the difficulty of exploitation for the unconventional reservoir, etc. In recent years, our research team devoted to the basic research on the application of "unconventional reservoir fluid flow mechanism and production simulation method". First of all, the non-linear flow law of unconventional reservoir, such as ultra-low permeability sandstone, shale gas and coalbed methane, has been figured out. Based on that, the simulation calculation method of oil-gas reservoir under different fracturing conditions has been established, which can improve the numerical simulation efficiency and prediction accuracy. This study provides theoretical basis and technical support for effective development of unconventional reservoirs.



Figure 1 The non-linear flow model of single-phase gas and gas-water two-phase with nanoscale pores and development simulation method of multi-stage fracturing horizontal well



    Big data analysis and application in area of energy and environment


With the popularization of various monitoring equipment and intelligent sensors in the energy and environment industry, a large number of heterogeneous data including oil development, air pollution, water pollution and so on are created and stored. Our research team uses the big data analysis technology and machine learn methods to study the massive oilfield development and reservoir physical data. And then, the correlation characteristics between different types of data can be acquired, which can achieve the fast calculation and accurate prediction of target parameters. Compared with traditional theoretical analysis and numerical simulation methods, the big data analysis technology is simple in operation, fast in calculation and high in accuracy.


              图2 基于深度学习的储层关键参数智能预测

Figure 2 Intelligent prediction of key reservoir parameters based on deep learning



In situ resource utilization in space


With the development of space science, the development and utilization of space resources have become the new direction of resource utilization and strategic reserve in the future. Take the development of lunar resources as an example. Water ice exists on the moon. The in-situ utilization of water ice can not only provide oxygen for human activities on the moon, but also provide fuel for future deep space exploration. In addition, due to the long-term radiation of solar wind, there are a lot of helium-3 gas in lunar soil. Helium-3 is a clean and controllable fusion fuel. Based on the composition of lunar soil, the forms and thermal release mechanisms of water and helium-3 in lunar environment were clarified through experiments and simulations, which provided theoretical basis for in-situ utilization of lunar volatiles in the future.


          图5 月球水冰资源原位利用

Figure 5 in-situ resource utilization about lunar water ice



Rainfall infiltration and runoff control for Sponge City construction


With the acceleration of urbanization, urban rainwater control and management has become an important topic of urban development research. Sponge city construction is a new concept of urban rainwater control and management. Through the combination of laboratory test, theoretical modeling and simulation calculation, our research team studied the rainfall infiltration characteristics of rain water in different strata and rain intensity conditions. Combining with the practical experience of sponge city construction, the engineering parameters of four types of specific measures are optimized, which can achieve the effective control of sponge city construction.



Figure 3 (a) The infiltration characteristics of heterogeneous formation, (b) Four specific measures of sponge city construction



Groundwater flow and Contaminant Transport


The serious overexploitation and pollution of groundwater seriously threaten the quality of human life and industrial development. In view of the serious water shortage in coal mining and the low utilization rate of mine water, our research team proposed the concept of coal mine underground reservoir water storage characterized by "guiding, storing and using". In this research, the fluid-solid coupling mathematical model is established with the consideration of effect of effective stress on reservoir water storage coefficient, which realizes the accurate calculation and reasonable analysis of the reservoir water storage coefficient and storage capacity.


                 图4 矿井地下水库设计及有效利用示意图

Figure 4 Schematic diagram of design and effective utilization of underground reservoir in coal mine.