A5020898127- Pulsed Power Technology Applications
- Electromagnetic Launch and Propulsion Technology
- Oil and Gas Production Techniques
- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Plasma Applications and Diagnostics
- Plasma Diagnostics and Applications
- Vacuum and Plasma Arcs
- High voltage insulation and dielectric phenomena
China University of Petroleum, East China
2022-2024
The impedance characteristics of the plasma (PLAS) channel produced by pulsed power discharge in water play an important role estimation shock wave energy. To study channel, a reservoir improvement device based on high-voltage was developed. First, theoretical model quadruple voltage doubler rectifier circuit built state-space averaging method, structure electrode introduced, and process segmented. Then, established using COMSOL simulation software, breakdown simulated bubble theory....
Summary The low porosity of the reservoir has a significant impact on production unconventional oil and gas, hence device to increase enhance gas recovery was developed. can be lowered 3000 m operate continuously for more than 30 minutes under discharge voltage 11 kV in frequency range 0–60 Hz improve by causing resonance. equipment structure includes an energy storage circuit, trigger switch, transducer. theoretical model circuit established state space averaging method obtain time constant...
Abstract High voltage fracturing technology was widely used in the field of reservoir reconstruction due to its advantages being clean, pollution-free, and high-efficiency. However, high-frequency circuit oscillation occurs during underwater high pulse discharge process, which brings security risks stability system. In order solve this problem, an power system established, generation conditions were analyzed suppression method proposed. Firstly, structure introduced charging model energy...
Abstract In order to study the failure mechanism of thyristor switch in application electric pulse fracturing, an underwater power discharge experimental platform was built, impedance characteristics plasma channel were analyzed and circuit equivalence carried out for each stage. Then, based on Silvaco simulation software, a theoretical model established. By observing distribution internal carriers current density, turn-on turn-off processes under high voltage analyzed. The formation factors...
Abstract Plasma pulse is a safe and environmentally friendly unconventional technology for enhancing oil gas production. However, during the pulsed discharge process, an abnormal phenomenon often occurs, which severely affects performance of equipment referred to as corona discharge. This paper combines laboratory test data theoretically analyze validate through COMSOL simulation mechanism generation under same electrode gap distance. A comparative analysis with arc also conducted further...