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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 6. Отображено 6.
06-08-2014 дата публикации

Anti-collapse drilling fluid and construction method thereof

Номер: CN103965842A
Автор: CHEN HUA, YANG YONGPING, SHI CHONGDONG, WANG SHELI, SUN ZHIQIANG, LIU NAICHUN, JIA YANQIANG, LIU SIYUAN, WANG KAI, HOU BO, FU HONGWEI, WU RUIPENG
Принадлежит:

The invention belongs to the technical field of drilling fluid in a petroleum and natural gas exploring and developing process, and particularly provides anti-collapse drilling fluid and a construction method thereof. Each cubic meter of the drilling fluid comprises 1-3 Kg of polyacrylic acid potassium, 1-3 Kg of restraint anti-collapse agent, 1-3 Kg of small positive ion shale restrainer, 10-30 Kg of potassium chloride, and 1-2 Kg of large positive ion restrainer and the balance is clear water. The drilling fluid is suitable for a stratum which is high in water sensitivity and has high probability in hydrating dispersion and borehole wall instability when the stratum is in water, and has a favorable anti-collapse effect.

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Номер записи: 1
20-06-2023 дата публикации

Throttling direct-pushing controllable variable-diameter stabilizer for petroleum drilling, variable-diameter method and control method

Номер: CN116265691A
Автор: SONG SHUNPING, LI XIAOPENG, YANG SEN, CONG CHENG, NI HUAFENG, LI LUKE, WANG WANQING, ZHANG YANBING, LI DEBO, SHI CHONGDONG, LI RUNMIAO, LI PEIMEI, SUN DENGJUN, ZHANG PANLONG, LI GUANYING, WU LI, ZHU JIANWU, HE JINGBIN, CHEN WEILIN, CHEN LIN, ZHAO YING, YU XIAOSONG, WANG PENG, HUANG HUA
Принадлежит:

The invention relates to the technical field of petroleum drilling, in particular to a throttling direct-pushing controllable variable-diameter stabilizer for petroleum drilling and a variable-diameter method and a control method.The stabilizer comprises an outer shell with the two ends penetrating through the interior and being hollow, a filtering short section and an isolating short section are arranged in a hollow cavity, and an executing mechanism and a plurality of variable-diameter parts are arranged on the outer shell; the executing mechanism is installed in the portion, between the filter short section and the outer shell, of the shell, the multiple reducing parts are installed in the portion, between the isolation short section and the outer shell, of the shell, and a pressure applying cavity is formed between the isolation short section and the outer shell. The executing mechanism can convey fluid flowing through the filter nipple into the pressure applying cavity to extrude the ...

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Номер записи: 2
06-06-2023 дата публикации

Low-hydrophilicity nano silicon dioxide blocking agent for drilling fluid and green preparation method thereof

Номер: CN116218488A
Автор: HU ZUBIAO, WANG QINGCHEN, NI HUAFENG, WANG WEILIANG, LI LUKE, WEI YAN, ZHANG QIN, SHI CHONGDONG, CHANG XIAOFENG, WANG KAI, HAN SUNG-BOK, SUN HUAN, HOU BO, QU YANPING, WANG HAO, LUO SHENGWEI
Принадлежит:

The invention discloses a low-hydrophilicity nano silicon dioxide blocking agent for a drilling fluid and a green preparation method of the low-hydrophilicity nano silicon dioxide blocking agent. The method comprises the following steps: S1, carrying out vacuum drying on a nano silicon dioxide raw material washed by a cleaning solution; s2, preparing a silicon dioxide stock solution; s3, hydrolyzing the silane coupling agent; s4, adding the silane coupling agent solution obtained by hydrolysis into the nano silicon dioxide stock solution, and fully stirring to uniformly mix; s5, under a constant-temperature stirring condition, carrying out condensation reflux reaction; and S6, after the reaction is completed, washing a reaction product with an alcohol solvent, and carrying out reduced pressure filtration and vacuum drying to obtain the low-hydrophilicity nano silicon dioxide particles for the drilling fluid. The method disclosed by the invention is simple in process, convenient to operate ...

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Номер записи: 3
17-09-2014 дата публикации

Anti-collapse and leakproof drilling fluid and construction method thereof

Номер: CN104046338A
Автор: CHEN HUA, YANG YONGPING, SHI CHONGDONG, WANG SHELI, SUN ZHIQIANG, LIU NAICHUN, JIA YANQIANG, LIU SIYUAN, WANG KAI, HOU BO, FU HONGWEI, WU RUIPENG
Принадлежит:

The invention relates to the technical field of petroleum drilling, and particularly relates to anti-collapse and leakproof drilling fluid and a construction method thereof, which are applicable to a Mesozoic Triassic stratum having the characteristics of low loading capacity, repeated block leakage and large leaking stoppage difficulty. The drilling fluid is composed of polyanionic cellulose, a drilling fluid salt-resistant filtrate-loss reducer, water dispersible emulsified asphalt powder, ultrafine calcium carbonate, sodium formate, sodium hydroxide, potassium chloride and water. Due to the application of a salt-poor low soil phase, the sealing capacity of a mud cake is improved and the loading capacity of the stratum is enhanced; low density is effectively controlled, and the probability of induced lost circulation is reduced; and the pump delivery is reduced, and the erosion of the drilling fluid to the wall of a well is reduced, thereby protecting the wall of the well from collapsing ...

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Номер записи: 4
30-06-2023 дата публикации

Well drilling construction difficulty evaluation method based on analytic hierarchy process

Номер: CN116362447A
Автор: HE JINGBIN, MA XI, NI HUAFENG, LI XIAOMING, LI LUKE, LI DEBO, ZHANG JIANQING, WANG WANQING, ZHANG YANBING, CHEN WEILIN, CHEN LIN, SHI CHONGDONG, CHENG HUALIN, HAN SUNG-BOK, ZHU MINGMING, ZHAO YING, ZHANG HUI, LIU XIAOYAN, LIU XINHUA
Принадлежит:

The invention belongs to the technical field of oil and gas field drilling, and particularly relates to a drilling construction difficulty evaluation method based on an analytic hierarchy process. The invention discloses a drilling construction difficulty evaluation method based on an analytic hierarchy process. The method comprises the following steps: collecting main control parameters influencing the drilling construction difficulty; constructing a hierarchical structure model for drilling construction difficulty evaluation; constructing a judgment matrix; calculating a relative weight value of each parameter representing a drilling construction difficulty main control parameter in the judgment matrix; according to the obtained relative weight values, layer-by-layer upward cumulative summation is carried out, a single well difficulty coefficient is obtained, and then single well drilling construction difficulty evaluation is carried out. By establishing the hierarchical structure model ...

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Номер записи: 5
01-12-2017 дата публикации

Integrated buckling guide fastener for threaded casing head and installation method for casing head

Номер: CN0107420052A
Автор: SHI PEIMING, SHI CHONGDONG, LIU LEI, CHENG RENJIE, QUAN CHUNYANG
Принадлежит:

The invention provides an integrated buckling guide fastener for a threaded casing head. The fastener comprises a pallet joint, a fastening flange, a buckling guide flange and a thrust rolling-ball rolling-needle bearing; the shaft of the pallet joint is sequentially sleeved with the fastening flange, the buckling guide flange and the thrust rolling-ball rolling-needle bearing from top to bottom, the lower end of the buckling guide flange is fixedly connected with the thrust rolling-ball rolling-needle bearing, the fastening flange and the thrust rolling-ball rolling-needle bearing are both fixedly arranged on the shaft of the pallet joint, and the diameter of a support head at the lower end of the pallet joint is smaller than the inner diameter of the casing head. According to the integrated buckling guide fastener for the threaded casing head, buckling guide can be conducted easily to achieve connection and fastening of the whole casing head after free rotation and buckling, the problems ...

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Номер записи: 6