A5103229293- Drilling and Well Engineering
- Erosion and Abrasive Machining
- Hydraulic Fracturing and Reservoir Analysis
- Oil and Gas Production Techniques
- High-Velocity Impact and Material Behavior
- Engineering Diagnostics and Reliability
- Coal Properties and Utilization
- HVDC Systems and Fault Protection
- Offshore Engineering and Technologies
- Fluid Dynamics Simulations and Interactions
- Hydraulic and Pneumatic Systems
- Fluid Dynamics and Heat Transfer
- Machine Fault Diagnosis Techniques
- Mineral Processing and Grinding
- Advanced Sensor and Control Systems
- Reservoir Engineering and Simulation Methods
- Hydrocarbon exploration and reservoir analysis
- Silicon Carbide Semiconductor Technologies
- Rock Mechanics and Modeling
- Particle Dynamics in Fluid Flows
- Power Systems Fault Detection
- Metallurgy and Material Forming
Chongqing University
2018-2023
State Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling
2020-2021
China Coal Technology and Engineering Group Corp (China)
2019
Abstract Underground radial drilling technique is a novel hydraulic stimulation technology, which one of the important ways to realize precise, intelligent, and efficient extraction gas resources. There are many factors influencing hole‐forming effect by water jet, such as nozzle arrangement so on. Recently, self‐rotatory multinozzle bit frequently used improve rock‐breaking jets. In this paper, study effects inclination angle forward nozzles standoff distance, ANSYS FLUENT combined with RNG...
Abstract Nowadays, the water jet technique has been more frequently used for coal bed methane stimulation. As ultimate component of system, nozzle important influence on rock breaking ability jet. To optimize nozzle, a simplified model impinging was established. The effects geometric structure (cylindrical, conical, and conical‐straight) parameters (outlet diameter d , conical angle α, length L ) flow field are simulated through computational fluid dynamics software Fluent14.0. Besides,...
With the growth of electrical power demanding, distribution networks have been an important part security and reliability supply to customers. Most medium voltage around world applied resonant earthed, single phase grounding fault is traditional type. In order decrease damage induced by fault, improved scheme for flexible suppression has proposed. this paper, elimination performance system could be because measurement line-to-ground capacitance high efficiency arc coil adjusting based on...
SPE 92292 Challenges and Countermeasures Facing Casing Damage in Daqing Oilfield L. He Y. Ye W. Qunyi Jianwen D. Huilan Ltd. Co. Copyright 2005 Society of Petroleum Engineers This paper was prepared for presentation at the Europec/EAGE Annual Conference held Madrid Spain 13-16 June 2005. selected by an Program Committee following review information contained abstract submitted author(s). Contents as presented have not been reviewed are subject to correction
Abstract Based on the high dimensional complex feature recognition capability of convolutional neural networks (CNN), this paper proposes a method for orbit intelligent identification rotating machinery based CNN. In method, is purified frequency-domain filtering algorithm. Then an algorithm converting vibration signal to matrix proposed construct input Finally classification model CNN established realize automatic machines. Case studies show that has accuracy over 85% experimental data and...
With the continuous development of high-pressure water jet technology, research on optimization structural parameters for multi-nozzle configurations, perforation effect rotational impact rock breaking, and force during breaking has received increasing attention. Through a self-designed drilling test device, experiments were conducted sandstone different strengths using streams with inclination angles, various combinations nozzles, target distances, speeds. The structure drill bit optimized,...
With the rapid development of social economy, people are paying more and attention to environmental issues. If society wants sustainable development, it must put energy conservation emission reduction on agenda. At this stage, China has vigorously promoted reduction, all walks life have gradually embarked green road conservation. In recent years, saving measures been widely used in China's oilfield electrical engineering. The author explores analyzes basic principles applied engineering,...
Formed in January 2004 from the merger of Iron & Steel Society and Association Engineers, AIST is proud to be #1 source for all your steel-related needs. We encourage you explore that we have offer. From technology-based Operating Committees our local Member Chapers, opportunities network with others expand technical know-how abound. Each year offer two major conventions along many specialty conferences will help get most out membership.
Abstract Nowadays, plunger high-pressure water pumps applied in large-scale mine are mostly used coal hydraulics to increase permeability, and it is difficult transport objections underground. Besides, the permeability improvement affected during overhaul too. Therefore, multiple small operating parallel can be solve problems mentioned above instead of large pumps. Moreover, principle pump determines specific flow fluctuation characteristics its operation, similar fluctuations also exist...