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This study collecting the monitoring data for surface water quality and economic development data of Tianjin, and analyzed the water quality according to national water environmental quality standards between 1998 and 2008, it is found that Hai River and other main rivers were polluted badly except Yuqiao Reservior which is only drinking source water body. In the past two decade, economy of Tianjin...
For multilayer sandstone reservoir 1, high permeability water passage would be formed between oil well and water well at the later stage of water drive. This caused the injected water circulation with no or low efficiency and thus decreased the production of oil wells. In order to improve the effect of water drive, measures of profile control and/or water shutoff must be taken. The key problem is...
Depending on market rules, namely congestion management and balancing management, coordination between wind and hydro producers may be mutually beneficial. In this paper we propose a new collaboration scheme and a fair and transparent method, based on the Shapley value, for splitting the extra value caused by a coordinated bidding and operation strategy.
Water resource is a crucial factor in social and economic development and ecological protection in arid and semi-arid areas. The unbridled development and use of water resources in the lower reaches of the Tarim River over the last 50 years have led to a serious ecological degradation: (1) groundwater level drop. (2) water quality deterioration. (3) land desertification and frequent natural disasters...
Thermodynamic essence of reservoir driving process is studied, which is a typical exergy transfer problem that uses multi-potential fields as driving source to achieve the purpose of oil displacement. The discrimination of reservoir driving mode is derived on the basis of the establishment of driving potential field exergy transfer, which includes driving work (exergy), driving power (exergy flow...
How to control bottom water energy reasonably and effectively of bottom-water reservoir is puzzling Field Engineer until now. The key technique of development for bottom-water reservoirs is to depress or control water cone, prolong water free production period as much as possible. In order to settle the question, this paper, based on static mechanism and kinetic equation of underground fluid, the...
CO2 capture methods of post-combustion and pre-combustion from power plant are investigated in this study. Different injection strategies for CO2 and water individually or combined are conducted by the model scaled up from Wilmington heavy oil reservoir. The results indicate high injection rate and high initial reservoir pressure for CO2 flooding or CO2&Water simultaneous flooding can achieve...
A method for optimal electric energy production of thermal-hydro power systems is presented in this paper. The electric energy produced by hydroelectric plants and coal-fired plants is divided into 4 components: potential energy, kinetic energy, water-deep pressure energy and reservoir energy. A new and important concept, reservoir energy, is proposed, based on which is divided into a number of water...
This paper addresses the self-scheduling of a price-taker hydro generating company in a pool-based electricity market. This company comprises several cascaded hydro plants along a river basin. The goal is maximizing the profit of company from participating in the day-ahead energy and ancillary service markets. The spinning reserve and regulation services are considered as ancillary services that hydro...
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