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Du Y.-K.,China University of Petroleum - East China | Wang R.-H.,China University of Petroleum - East China | Ni H.-J.,China University of Petroleum - East China | Huo H.-J.,China University of Petroleum - East China | And 4 more authors.
Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) | Year: 2012

Drilling with supercritical carbon jet is an unconventional oil and gas reservoirs drilling and production method with great potential. The supercritical carbon jet experimental system was developed based on the basic characteristics of supercritical carbon dioxide combined with the actual drilling and completion technology features. The rock-breaking experiment was carried out with the experimental system. The results show that the rock-breaking ability of supercritical carbon dioxide jet is much better than the high pressure water jet. The effect of the nozzle diameter, standoff distance, jet pressure and rock parameter on the rock-breaking ability of supercritical carbon dioxide jet agrees well with that of high pressure water jet, while the effect of bottom-hole temperature on the rock-breaking ability of supercritical carbon dioxide jet is very marked. And the rock-breaking effect sharply increases as the increase of jet temperature and the increase trend reflects a slowing decline after the temperature exceeding the critical value. Source


Hu Y.,Beijing University of Technology | Wang T.,Beijing University of Technology | Zhu W.,Beijing Institute of Exploration Engineering
Procedia Engineering | Year: 2014

On the request of the current level of the geological core drilling design, refer to oil drilling design software, a geological core drilling computer aided design system was developed by means of advanced web design technology. The system covers all procedures of geological core drilling design, and presets reference value according to system database information, and automatically draws geological column and borehole columnar section according to the user design information, and finally produces overall and standard design report. The development technology is based on ZK and Hibernate framework with MVC and MVVM model. Consequently, the system will be easy to be used and maintained, and will contribute to the geological core drilling design information exchange and share online. © 2014 Published by Elsevier Ltd. Source


Liu K.,Shenyang University of Technology | Zhang B.-Y.,Shenyang University of Technology | Feng G.-H.,Shenyang University of Technology | Liu J.-R.,Beijing Institute of Exploration Engineering
Frontiers in Artificial Intelligence and Applications | Year: 2016

With respect to the automatic drilling control of geological winch motor, the paper proposes a novel control method based on fuzzy theory for winch motor drive. The paper analyzes the operation principle of automatic drilling systems. It designs a novel winch motor drive system based on a Permanent Magnet Motor (PMM). The paper proposes an intelligent fuzzy logic algorithm that could be applied to the winch motor automatic drilling system in order to replace the traditional PID control algorithm. The system based on fuzzy logic settles the conundrum of the instability of winch motor drilling pressure caused by time-delay, time-variability and nonlinearity of controlled objects. The results prove fuzzy logic can pledge the stability of the winch motor drilling pressure, and the drilling system is efficient in operating. The research is beneficial to geological winch motor automatic drilling control both in theory and in technology. © 2016 The authors and IOS Press. All rights reserved. Source


Tian M.,Fourth Geological Exploration Institute of Henan Geology and Mine Bureau | Hu Y.,China University of Geosciences | Liu Z.,Fourth Geological Exploration Institute of Henan Geology and Mine Bureau | Zhu W.,Beijing Institute of Exploration Engineering
Procedia Engineering | Year: 2014

The development of computer and network technology provides a possibility for informationization of geo-drilling design and construction management. At the same time, with drilling technology development, drilling production information management is coming along. In order to realize information management system of geological drilling, based on Ruby on Rails architecture which is characterized by short developing circle, high quality, high efficiency and cross-platform application etc., in this paper, an information management system of geo-drilling construction had been designed and developed, which includes eight function modules, as follows: contract management, design management, equipment management, material management, personnel management, borehole management, information utilization, drilling archive management, which realizes the full life cycle management of borehole. © 2014 Published by Elsevier Ltd. Source


Liu Z.,Bureau of Mineral Resources | Zhu W.,Beijing Institute of Exploration Engineering | Gu T.,Bureau of Mineral Resources | Hu Y.,China University of Geosciences
Procedia Engineering | Year: 2014

Along with the continuous development and global application of computer and network technology, the research and application of information technology of geological drilling construction design and management goes deeper. In the paper, on the basis of analysis on the flow and demand of geological drilling information, the overall scheme of drilling construction informatization is presented, and informatization technological plan of computer aided design and construction management on geological drilling is studied and provided. Carrying out those schemes can significantly improve the level of geological drilling design, construction, and management. The paper has given feasible instructions and pointed out problems on informatization of geological drilling. © 2014 Published by Elsevier Ltd. Source

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