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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 2. Отображено 2.
08-08-2023 дата публикации

High-temperature-resistant degradable temporary plugging agent for middle-deep layer well fracturing and preparation method of temporary plugging agent

Номер: CN116554847A
Автор: WU BAOCHENG, SHI SHANZHI, WANG JIA, DONG JINGFENG, WANG MINGXING, ZHOU PEIYAO, HUI FENG, WANG MUQUN, CHENG FUSHAN
Принадлежит:

The invention provides a high-temperature-resistant degradable temporary plugging agent for medium-deep well fracturing and a preparation method thereof, and the preparation method comprises the following steps: uniformly mixing degradable modified resin, modified polyglycolide, a high-temperature-resistant agent, a flexibilizer and a water-blocking agent, and carrying out melt spinning to prepare a knot type temporary plugging agent. The rope knot type temporary plugging agent solves the problem that a conventional temporary plugging ball is short in degradation time at high temperature, the plugging time of the temporary plugging agent is effectively prolonged, and temporary plugging guarantee is provided for fracturing construction of other perforation sections (clusters); compared with the existing temporary plugging ball, the degradable rope knot type temporary plugging agent designed by the invention has unique appearance, structure and material toughness, so that the degradable rope ...

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Номер записи: 1
14-04-2023 дата публикации

Degradable temporary plugging agent suitable for shallow low-temperature reservoir fracturing as well as preparation method and application of degradable temporary plugging agent

Номер: CN115960593A
Автор: XU JIANGWEN, WU BAOCHENG, HUO JIN, SHI SHANZHI, LI JIE, WANG JIA, DONG JINGFENG, WANG MINGXING, ZHOU PEIYAO, WANG MUQUN
Принадлежит:

The invention belongs to the technical field of exploration and development of temporary plugging and fracturing of shallow oil and gas wells, and particularly relates to a degradable temporary plugging agent suitable for fracturing of shallow low-temperature reservoirs and a preparation method and application of the degradable temporary plugging agent. The temporary plugging agent is a knot type temporary plugging agent, the middle of the temporary plugging agent is in a knot shape, and a section of scattered rope head is reserved at each of the two ends of the temporary plugging agent. The temporary plugging agent is prepared from the following raw materials in parts by weight: 72-80 parts of degradable resin, 12-20 parts of modified polyglycolide, 1-5 parts of a nanoparticle toughening agent, 1-5 parts of a salt toughening agent and 1-3 parts of a water blocking agent. The temporary plugging agent disclosed by the invention has very high strength, and the rope knot type structure of ...

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Номер записи: 2