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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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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 5. Отображено 5.
21-11-2012 дата публикации

Borehole wall stability prediction method suitable for gas drilling

Номер: CN0101392647B
Автор: HANLIN ZHANG, HAIXIONG TANG, BAOHUA WEI, LINGZHAN ZOU, XIULIANG YAN, JINGEN DENG, QIANG TAN, LIHUA WANG, YUN YANG, ZHANG HANLIN, TANG HAIXIONG, WEI BAOHUA, ZOU LINGZHAN, YAN XIULIANG, DENG JINGEN, TAN QIANG, WANG LIHUA, YANG YUN
Принадлежит:

The invention relates to a well-wall stability prediction method for gas drilling, which comprises the following steps: when a well wall achieves a critical plastic state, a corresponding borehole inner supporting force Pi is obtained according to complete stress-strain experiment data of rocks and mechanical property parameters of the rocks; whether the value of the borehole inner supporting force Pi is more than zero is judged; if the borehole inner supporting force Pi is less than zero, the well wall maintains the stability; if the borehole inner supporting force Pi is more than zero, the well wall destabilizes; and if the borehole inner supporting force Pi is equal to zero, the result shows that the plasticity of the well wall achieves the critical state during the gas drilling. The method is provided based on the failure criterion of rock strength, is applicable to the prediction of well-wall stability under gas drilling conditions, and has good prediction effect.

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Номер записи: 1
11-07-2023 дата публикации

Well leakage detection device and method

Номер: CN116411928A
Автор: WANG QING, WANG HAIGE, ZHANG JIAWEI, CHEN CHANGCHANG, YU JING, ZHANG HONGYUAN, HUANG HONGCHUN, ZOU LINGZHAN, ZHUO LUBIN, JI GUODONG
Принадлежит:

The invention discloses a well leakage detection device and method, and relates to the technical field of petroleum and natural gas drilling engineering.The device comprises a well leakage sound wave recognition device, a coding circuit, a transcoding circuit, a transducer driving circuit and a transducer; the well leakage sound wave recognition device is used for capturing sound wave signals generated by well leakage and generating electric signals carrying well leakage information according to the sound wave signals; the coding circuit is used for coding the electric signal; the transcoding circuit is used for transcoding the coded electric signal; the transducer driving circuit is used for driving the transducer according to the transcoded electric signal; and the transducer is used for converting the transcoded electric signal into a sound wave signal and transmitting the sound wave signal to the ground. Downhole leakage can be detected in time by identifying the sound wave signal generated ...

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Номер записи: 2
25-03-2009 дата публикации

Borehole wall stability prediction method suitable for gas drilling

Номер: CN0101392647A
Автор: DENG JINGEN, WEI BAOHUA, TANG HAIXIONG, ZHANG HANLIN, YAN XIULIANG, TAN QIANG, WANG LIHUA, ZOU LINGZHAN, JINGEN DENG, BAOHUA WEI, HAIXIONG TANG, HANLIN ZHANG, XIULIANG YAN, QIANG TAN, LIHUA WANG, LINGZHAN ZOU
Принадлежит:

The invention relates to a well-wall stability prediction method for gas drilling, which comprises the following steps: when a well wall achieves a critical plastic state, a corresponding borehole inner supporting force Pi is obtained according to complete stress-strain experiment data of rocks and mechanical property parameters of the rocks; whether the value of the borehole inner supporting force Pi is more than zero is judged; if the borehole inner supporting force Pi is less than zero, the well wall maintains the stability; if the borehole inner supporting force Pi is more than zero, the well wall destabilizes; and if the borehole inner supporting force Pi is equal to zero, the result shows that the plasticity of the well wall achieves the critical state during the gas drilling. The method is provided based on the failure criterion of rock strength, is applicable to the prediction of well-wall stability under gas drilling conditions, and has good prediction effect.

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Номер записи: 3
14-07-2023 дата публикации

Well drilling stick-slip vibration control device

Номер: CN116427859A
Автор: ZHOU BO, WANG HAIGE, ZHANG FUCHENG, HUANG HONGCHUN, LI BING, ZOU LINGZHAN, HE LIU, CHANG LONG, ZHOU CUIPING
Принадлежит:

The invention relates to a well drilling stick-slip vibration control device which comprises a mandrel, a drill bit cutting depth regulation and control mechanism and a rotary short section, the drill bit cutting depth regulation and control mechanism is arranged on the outer side of the mandrel in a sleeving mode, and an annular first pressure regulating cavity is formed between the inner wall of the drill bit cutting depth regulation and control mechanism and the outer wall of the mandrel; the first pressure adjusting cavity is filled with an elastic structural part, the top end of the rotating short section is rotationally connected with the bottom end of the mandrel, and the bottom end of the rotating short section is connected with a drilling tool. When the drilling tool conducts drilling operation, the rotary short section and the mandrel can move in the axial direction of the mandrel, and the elastic structural part in the first pressure adjusting cavity is in an extruded state.

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Номер записи: 4
27-06-2023 дата публикации

Control system and method for monitoring stick-slip vibration of well drilling

Номер: CN116335627A
Автор: ZHOU BO, WANG HAIGE, ZHANG FUCHENG, LI BING, HUANG HONGCHUN, ZOU LINGZHAN, HE LIU, BI WENXIN, ZHANG HONGYUAN
Принадлежит:

The invention relates to a control system and method for monitoring stick-slip vibration of a drilling well, and the system comprises a rotating speed sensor for collecting rotating speed data, a bit pressure sensor for collecting bit pressure data, and a pulse signal collector for collecting pulse data. A drill column located in a shaft is connected with a driving device and a throttling pipeline on the ground, a rotating speed sensor and a bit pressure sensor are arranged on the drill column, and a pulse signal collector is arranged on the throttling pipeline. The detection signal output end of the rotating speed sensor, the detection signal output end of the bit pressure sensor and the detection signal output end of the pulse signal collector are respectively connected with the detection signal receiving end of the controller, and the control signal output end of the controller is connected with the control end of the driving device. According to the invention, the technical problems ...

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Номер записи: 5