Experimental study on the discharging characteristics of pulsed high-voltage discharge technology in oil plug removal

• Autorzy: Bingnan Y. , Jing Z. , Liang Z. , Chongxin L. , Meng F.
• Języki publikacji: EN

Abstrakty

EN

Oil plugging of the downhole during oilfield development leads to a decline in well yield. A new plug removal method based on pulsed high-voltage discharge technology was proposed in this paper to solve this plugging problem. A low-carbon steel high-pressure sealed drum was developed to simulate a downhole operating environment with high static pressure. Four sealed contact pins were designed on the drum cover. These pins were used to insert the high-voltage cable into the drum body while ensuring the drum is leakproof. The maximum static pressure borne by the drum was 40 MPa. An experimental system of pulsed high-voltage discharge was designed based on the drum. A platform for the discharging experiment was established according to the system principle diagram. The effects of variation in static pressure on discharging voltage, discharging current, critical breakdown field strength, discharging time and its data discretization, and other parameters were determined with water and crude oil as the discharging media. Experimental results indicate that increasing static pressure increases discharging time, enhances pulsed discharging randomness, reduces the strength of impact waves generated in the discharging media, and weakens the fracture-generating effect on the cement tube. Increasing the working voltage achieves better plug removal. However, the requirements for size, texture, and insulativity of plug removal equipment are elevated accordingly. This study provides a basis for the application of pulsed high-voltage discharge technology in oil reservoir plug removal.

Słowa kluczowe

EN

plug removal technology; pulsed high-voltage discharge; static pressure; discharging characteristic

PL

technologia usuwania wtyczek; wyładowania elektryczne wysokonapięciowe; wyładowania elektryczne impulsowe; ciśnienie statyczne; charakterystyka wyładowań

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2016
• Tom: Vol. 96, nr 4
• Strony: 261--268
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Bingnan Y.

• School of Electrical Engineering Xi'an Jiaotong University, Xi'an , 710049, China
• School of Xi'an Shiyou University, Xi'an, 710065, China

autor

Jing Z.

• School of Xi'an Shiyou University, Xi'an, 710065, China

autor

Liang Z.

• Xi'An Thermal Power Research Institute Co. Ltd, Xi'an, 710054 , China

autor

Chongxin L.

• School of Electrical Engineering Xi'an Jiaotong University, Xi'an , 710049, China

autor

Meng F.

• University at Buffalo, the State University of New York, 14260-1800, United States

Bibliografia

• [1] Z. Wang, Y. Xu, S. Bajracharya, The comparison of removing plug by ultrasonic wave, chemical deplugging agent and ultrasound–chemical combination deplugging for near-well ultrasonic processing technology, Ultrasonics sonochemistry 27 (2015) 339–344.
• [2] M. Al-Ghazal, J. T. Abel, A. Al-Saihati, M. Buali, A. Al-Ruwaished, J. R. Vielma, E. Bustamante, et al., First successful deployment of a costeffective chemical plug to stimulate selectively using ct in saudi arabia gas fields-a case history, in: SPE Saudi Arabia Section Technical Symposium and Exhibition, Society of Petroleum Engineers, 2012.
• [3] C. Pu, D. Shi, S. Zhao, H. Xu, H. Shen, Technology of removing near wellbore inorganic scale damage by high power ultrasonic treatment, Petroleum Exploration and Development 38 (2) (2011) 243–248.
• [4] P. Poesio, G. Ooms, Removal of particle bridges from a porous material by ultrasonic irradiation, Transport in porous media 66 (3) (2007) 235–257.
• [5] Y. Sun, G. Zuo, The transferring spark source used in dredging oil well, High Voltage Engineering 26 (4) (2000) 31–32.
• [6] R. Zhang, Y. Xiang, J. Song, The reservoir treatment effect based on low frequency pulse treatment, Petroleum Exploration And Development 28 (5) (2001) 88–90.
• [7] I. V. Timoshkin, J. W. Mackersie, S. J. MacGregor, Plasma channel miniature hole drilling technology, IEEE Transactions on plasma science 32 (5) (2004) 2055–2061.
• [8] M. Wilson, L. Balmer, M. Given, S. MacGregor, I. Timoshkin, An investigation of spark discharge parameters for material processing with high power ultrasound, Minerals Engineering 20 (12) (2007) 1159–1169.
• [9] R. Fu, J. Zhou, Y. Sun, et al., Application of high voltage pulse discharge in rock fracturing without confining pressure, High Voltage Engineering 41 (12) (2015) 4055–4059.
• [10] Z. Tang, C.-h. Tang, H. Gong, A high energy density asymmetric supercapacitor from nano-architectured ni (oh) 2/carbon nanotube electrodes, Advanced Functional Materials 22 (6) (2012) 1272–1278.
• [11] B. M. Kovalchuk, A. Kharlov, V. Vizir, V. Kumpyak, V. Zorin, V. Kiselev, High-voltage pulsed generator for dynamic fragmentation of rocks, Review of Scientific Instruments 81 (10) (2010) 103506.
• [12] A. F. Gutsol, W. R. Pyle, Electro-hydrodynamic and plasma phenomena in corona—liquid interaction, in: 2013 19th IEEE Pulsed Power Conference (PPC), IEEE, 2013, pp. 1–5.
• [13] M. Given, I. Timoshkin, M. Wilson, S. MacGregor, J. Lehr, Analysis of the current waveforms observed in underwater spark discharges, in: Plasma Science, 2007. ICOPS 2007. IEEE 34th International Conference on, IEEE, 2007, pp. 146–146.
• [14] J. J. Rassweiler, T. Knoll, K.-U. Köhrmann, J. A. McAteer, J. E. Lingeman, R. O. Cleveland, M. R. Bailey, C. Chaussy, Shock wave technology and application: an update, European urology 59 (5) (2011) 784–796.
• [15] T. Pontes, Case study, downhole testing tools for formation evaluation in high-pressure and high-temperature environments, in: Nigeria Annual International Conference and Exhibition (NAICE’10), Louisiana, USA, 2010, pp. 1–8.
• [16] J. R. Haddad, A. Salguero, C. Jaimes, et al., Application of telemetry technology in high-pressure wells to improve data accuracy in drill stem tests, in: SPE Oil and Gas India Conference and Exhibition, Society of Petroleum Engineers, 2010.
• [17] S. F. Golovashchenko, A. J. Gillard, A. V. Mamutov, J. F. Bonnen, Z. Tang, Electrohydraulic trimming of advanced and ultra high strength steels, Journal of Materials Processing Technology 214 (4) (2014) 1027–1043.
• [18] Z. Li, Y. Liu, Y. Han, et al., Erosion mechanism research of metal electrode under pulse current in water, High Power Laser and Particle Beams 28 (4) (2016) 045007–045007–7.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).