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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 3. Отображено 3.
11-08-2010 дата публикации

Strong inhibition type anti-collapse foam liquid for drilling

Номер: CN0101798499A
Автор: LI CHEN, KAI DENG, CHAOHUI HAN, JUNXI JIA, ZHENWEI JIANG, XINDI LI, KEQIANG LIU, JUNCHUANG WANG, RUI WANG, JIANRONG YANG, YUN YANG, JIANBIN ZHANG, CHEN LI, DENG KAI, HAN CHAOHUI, JIA JUNXI, JIANG ZHENWEI, LI XINDI, LIU KEQIANG, WANG JUNCHUANG, WANG RUI, YANG JIANRONG, YANG YUN, ZHANG JIANBIN
Принадлежит:

The invention relates to foam liquid for drilling, in particular to strong inhibition type anti-collapse foam liquid for drilling, which is characterized by being prepared with the following components in parts by weight: 0.09-0.11 part of foam stabilizer, 0.36-0.44 part of foaming agent, 2.34-2.86 parts of anti-collapse agent, 2.7-3.3 parts of fluid loss additive and 94.51-93.29 parts of water. When complex situations such as formation water occur to gas drilling, the foam liquid of the invention can effectively improve the rock carrying capacity and the water carrying capacity and simultaneously protect the stability of the upper well wall. Laboratory studies shown that the foam liquid has high foaming capacity, the foaming capacity is more than or equal to 500 percent, the half-life is moderate, and the foam liquid can be easily controlled and is conducive to drilling engineering construction.

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Номер записи: 1
21-07-2010 дата публикации

Method used for gas drilling drillstem test

Номер: CN0101781983A
Автор: JUNXI JIA, KEQIANG LIU, JUNCHUANG WANG, YUN YANG, HANLIN ZHANG, JIANBIN ZHANG, JIA JUNXI, LIU KEQIANG, WANG JUNCHUANG, YANG YUN, ZHANG HANLIN, ZHANG JIANBIN
Принадлежит:

The invention discloses a method used for a gas drilling drillstem test, which relates to the technical field of petroleum and natural gas drilling methods. The method comprises the following steps of: firstly, connecting an inner blowout pipeline, a throttle manifold, a ground testing device and an outer blowout pipeline in sequence, wherein the adopted ground testing device comprises a manifold which is connected with the gas drilling outer blowout pipeline in series, and a first flat valve, a second flat valve, a third flat valve an a measurement unit; secondly, when a drillstem test is carried out, firstly opening the third flat valve, subsequently opening the second flat valve and finally closing the first flat valve, and at this moment, gas firstly flows through the inner blowout pipeline, then arrives at the throttle manifold and then enters the ground testing device for testing and finally is blown out by the outer blowout pipeline to be ignited. The drillstem test can be carried ...

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Номер записи: 2
20-06-2023 дата публикации

Throttling back pressure multistage control method based on multivariable intelligent decoupling

Номер: CN116265707A
Автор: YANG YUN, WEI HAIFANG, ZHAO WENZHUANG, WANG PEIFENG, YANG MAOHONG, LI XIAOLI, LIU KEQIANG, ZHAO HANGBO, HE YIQING, LI XINDI, JIANG SHENGHUI, HU YANXIA, WANG JUNCHUANG, ZHOU JINYU
Принадлежит:

The invention discloses a throttling back pressure multi-stage control method based on multivariable intelligent decoupling. The throttling back pressure multi-stage control method comprises the steps that a single/multi-valve-element throttling valve mode of a throttling valve is selected; calculating the pressure loss delta PiL from a wellhead to the front end of the throttle valve, the pressure loss delta PLo from the rear end of the throttle valve to an outlet, the required throttle pressure loss delta PLs, the throttle return pressure PLs required to be controlled and the required real-time throttle valve through-flow area SLc; if the throttle valve mode is a single-valve-element throttle valve mode, a fuzzy control area and a fuzzy position in the fuzzy control area are determined according to the needed real-time throttle valve through-flow area SLc; the valve element S is controlled to a fuzzy position; a neural network adaptive approximation method is adopted to regulate and control ...

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Номер записи: 3