Oil and gas reservoir evaluation is to evaluate the reserves in large scale or with special significance, and select the block for development. Oil and gas reservoir evaluation program includes a series of technical and economic indicators. Therefore the program optimization of oil and gas reservoir evaluation project is a system with multi-attribute. In order to optimize program comprehensively and systematically, it must establish a multi-level system of technical and economic indicators. Combining with the degree of gray incidence, the paper establishes a multi-level gray comprehensive evaluation model for oil and gas reservoir evaluation project, and applies the model to the practical example. The results show that the model is effective especially for the circumstance of the small sample or the limited amount of data. In addition, the model offers decision makers a new method to select favorable program.
A remotely controlled energy saving combustion control system is developed in this paper. The system includes three parts: upper computer, communication program between upper and lower computer, lower computer control program. Friendly human-machine interface is designed by Labview, which realizes the remote control of PLC; With Visual C, a standard dynamic link library is designed and debugged, by which the serial communication between PC and PLC can be realized; According to the scheme of air-fuel ratio, the control programs are achieved by PLC, which realizes energy saving combustion. The results of experiment in PLC experimental platform shows that the PC can effectively control the PLC .The scheme of air-fuel ratio is similar with the actual situation.
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