Downhole generator based on a line pulse transformer for electro pulse drilling

Molchanov, Denis; Vazhov, V. F.; Lavrinovich, Ivan; Lavrinovich, V. A.; Ratakhin, N. A.

doi:10.1109/ppc.2017.8291167

Cited by 4 publications

(4 citation statements)

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“…In [26,27], the authors report the possibility of using in generators for applied purposes the sufficiently mature and proven technology of a linear pulsed transformer [28,29], previously used in powerful electrophysical installations in a single mode. The design of a linear pulsed transformer makes it possible to reduce the volume of high-voltage insulation, abandon the single insulating volume of a high-voltage capacitive energy storage, simplify the control and maintenance of the capacitors and switches of the storage, etc.…”

Section: Jinst 16 P12006mentioning

confidence: 99%

“…This work develops an approach to the technical implementation of a linear pulsed transformer from the point of view of using it in applied tasks and, in particular, for electric pulse technologies. The design and results of a study of an air insulated linear pulsed transformer are presented, which has the following distinctive features compared with other transformers [26,28,29]:…”

Section: Jinst 16 P12006mentioning

confidence: 99%

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An air insulated linear pulse transformer for electrodischarge technology

2021

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A linear pulse transformer with air insulation at atmospheric pressure was created and tested under both constant resistance and non linear loads. The maximum power of the transformer output pulse reached ∼500 MW at a matched load with a charge voltage 50 kV. The transformer transferred ∼60% of the stored energy to the load over a characteristic time of about 1 μs. The scalability the generator was studied by connecting two identical transformers in series which gave a power output of ∼850 MW with doubled output voltage and reduced current. The frequency mode of operation was studied using one and two transformers with a charge voltage of 50 kV and a load that was, close to matched. In both cases, the power maximum and jitter showed no significant changes at any of the frequencies tested (up to 5 Hz). These results mean that the use of this generator can be recommended for a wide field of applications due to its scalability and low internal impedance.

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Section: Jinst 16 P12006mentioning

confidence: 99%

Section: Jinst 16 P12006mentioning

confidence: 99%

An air insulated linear pulse transformer for electrodischarge technology

2021

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“…Наиболее полное обобщение научных данных по способу ЭИ дезинтеграции материалов, полученных преимущественно в СССР во второй половине ХХ века, можно найти в монографиях [2,3]. В настоящее время исследования в данной области ведутся в Германии [4], США [5], Австралии [6], Китае [7], России [8] и ряде других стран. Однако широкого промышленного применения ЭИ технологии не получили, кроме, может быть, в установках ЭИ дезинтеграции производства компании SelFrag [9].…”

Section: Introductionunclassified

Электрическая Прочность Диэлектриков При Воздействии Двуполярных Импульсов Напряжения Субмикросекундной Длительности

Важов¹,

Петренко²,

Юдин³

2022

Журнал Технической Физики

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The development of electric pulse technologies for the destruction of solids states (rocks) - drilling, cutting and crushing requires reduction of high pulse voltages. In this work, for the first time, studies are proposed and carried out to determine the breakdown voltages of various dielectric media (air, water, rocks) while simultaneously supplying two pulses to the electrode system by two high voltage generators of different polarity - positive and negative, which halves the operating impulse voltage each generator. In addition, experiments have shown that for all media there is a decrease in breakdown voltage in comparison with a monopolar voltage pulse, which reaches 28% - for the breakdown of sandstone, 23% - granite, 24% - water, 25% - air. A physical explanation of the discovered effect is given.

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“…Russia [8], and several other countries. However, the EP technology has not found wide industrial application (with the notable exception of EP disintegration setups produced by SelFrag [9]).…”

Section: Introductionmentioning

confidence: 99%

Electric strength of dielectrics under influence of bipolar voltage pulses of submicrosecond duration

2022

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The development of electric pulse technologies for the destruction of solids states (rocks) --- drilling, cutting and crushing requires reduction of high pulse voltages. In this work, for the first time, studies are proposed and carried out to determine the breakdown voltages of various dielectric media (air, water, rocks) while simultaneously supplying two pulses to the electrode system by two high voltage generators of different polarity --- positive and negative, which halves the operating impulse voltage each generator. In addition, experiments have shown that for all media there is a decrease in breakdown voltage in comparison with a monopolar voltage pulse, which reaches 28% --- for the breakdown of sandstone, 23% --- granite, 24% --- water, 25% --- air. A physical explanation of the discovered effect is given. Keywords: monopolar and bipolar pulse voltage, breakdown voltage, discharge channel.

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Downhole generator based on a line pulse transformer for electro pulse drilling

Cited by 4 publications

References 0 publications

An air insulated linear pulse transformer for electrodischarge technology

An air insulated linear pulse transformer for electrodischarge technology

Электрическая Прочность Диэлектриков При Воздействии Двуполярных Импульсов Напряжения Субмикросекундной Длительности

Electric strength of dielectrics under influence of bipolar voltage pulses of submicrosecond duration

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