Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

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

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 3. Отображено 3.
14-07-2023 дата публикации

Fractured buried hill oil reservoir multi-slug combined profile control agent and construction method thereof

Номер: CN116426258A
Автор: GAO JIANCHONG, LI CHUNYONG, LUO SHAOFENG, NING YONGGENG, ZHANG LING
Принадлежит:

The invention relates to a multi-slug combined profile control agent for a fractured buried hill oil reservoir and a construction method thereof, and belongs to the field of chemical agents applied to oil fields. Comprising a large crack plugging section plug, a secondary crack plugging section plug and a micro crack plugging and oil displacement section plug; the large crack plugging section comprises the following components in percentage by weight: 2%-5% of acrylamide, 0.5%-1.0% of acrylic acid, 0.01%-0.1% of an initiator, 0.5%-1.5% of a reinforcing agent, 0-1.0% of 2-acrylamide-2-sodium methylpropanesulfonate, 0.01%-0.05% of N, N-methylene bisacrylamide and the balance of oilfield injection water; the profile control agent is used for blocking and bridging a large crack through a large crack blocking slug; the secondary fracture plugging section plug is used for plugging secondary fractures and medium-high permeability pores, and the micro-fracture plugging and oil displacement section ...

Подробнее
Номер записи: 1
16-09-2015 дата публикации

Energy -efficient frequency conversion actuator of 1140V

Номер: CN0204652281U
Автор: ZHAO JIANMING, NING YONGGENG, WANG HONG, YAN SHEN
Принадлежит:

The utility model discloses an energy -efficient frequency conversion actuator of 1140V, including rectifier circuit, filtering and tank and dc -to -ac converter, rectifier circuit is three -phase full -bridge three -phase rectifier circuit, filtering inserts dc -to -ac converter front end dc circuit after parallelly connected with tank and three -phase full -bridge three -phase rectifier circuit in, inserts dc -to -ac converter front end dc circuit behind the parallelly connected sampling circuit in both ends of dc -to -ac converter direct -current input, and it has the regulation and control circuit to establish ties among the dc -to -ac converter front end dc circuit, regulates and control the tank 0 that the circuit is used for regulating and control the dc -to -ac converter. Silicon controlled rectifier in vogue switches on on the beam type beam -pumping unit, and the dc -to -ac converter gets to be exported three -phase alternating current after electric and satisfy motor heavy load ...

Подробнее
Номер записи: 2
25-03-2015 дата публикации

Method for detecting concentration of polymer for oil displacement

Номер: CN104458620A
Автор: LI RUYIN, CHEN WENJUAN, ZHANG JIAN, DAI ZHAOHUI, LIU GUANGCHENG, NING YONGGENG, HU KE
Принадлежит:

The invention discloses a method for detecting concentration of a polymer for oil displacement. The method comprises the following steps: (1) preparing the standard aqueous solutions of the polymer of at least five different concentrations; (2) respectively adding a digesting agent and aids into the standard aqueous solutions of the polymer, heating to carry out a digestion reaction, cooling, adding an acid solution, and respectively measuring the absorbance of the digested standard aqueous solutions of the polymer and the reference at the wavelengths of 220nm and 275nm by utilizing an ultraviolet spectrophotometer; respectively calculating the corrected absorbance of the standard aqueous solutions of the polymer and the reference, and drawing a standard curve by taking the concentration of the standard aqueous solutions of the polymer as a horizontal coordinate, and taking the difference of the corrected absorbance of the standard aqueous solutions of the polymer and the corrected absorbance ...

Подробнее
Номер записи: 3