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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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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 9. Отображено 9.
05-05-2023 дата публикации

Shale formation collapse pressure increment prediction method based on hardness experiment

Номер: CN116066092A
Автор: LIU XIANGJUN, DING YI, LIANG LIXI, XIONG JIAN, HOU LIANLANG, YU XIAOLONG
Принадлежит:

The invention relates to a shale formation collapse pressure increment prediction method based on a hardness experiment. The method comprises the following steps: preparing a shale short cylindrical sample and a standard cylindrical sample; counting the bedding density of the rock sample, and carrying out hardness tests in a parallel bedding direction and a vertical bedding direction to obtain hardness values in the parallel bedding direction and the vertical bedding direction; carrying out a drilling fluid and rock sample soaking experiment, carrying out a hardness test after soaking, and determining the influence of the drilling fluid effect on the shale hardness; carrying out shear tests in a parallel bedding direction and a vertical bedding direction to obtain cohesive force and an internal friction angle of the bedding and a matrix; constructing a quantitative corresponding relationship between the hardness and the cohesive force and the internal friction angle of the rock; based on ...

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Номер записи: 1
14-04-2023 дата публикации

Method for predicting lower limit of drilling fluid density under water-rock action based on rock acoustic information

Номер: CN115961950A
Автор: LIU XIANGJUN, DING YI, LIANG LIXI, XIONG JIAN, HOU LIANLANG, YU XIAOLONG
Принадлежит:

The invention relates to a rock acoustic information-based drilling fluid density lower limit prediction method under a water-rock action. The method comprises the following steps of: obtaining original rock acoustic parameters and original rock strength parameters; by means of a BP neural network algorithm, an undisturbed rock strength parameter prediction method based on acoustic information is established; acquiring an acoustic parameter change degree coefficient caused by the water-rock action and a strength damage coefficient after the water-rock action; based on the correlation between the acoustic parameter change degree coefficient and the strength damage coefficient, establishing a rock strength damage coefficient characterization equation based on acoustic information; determining the main stress distribution of the well wall based on the geomechanical characteristics of the target stratum and the drilling engineering parameters; according to an undisturbed rock strength parameter ...

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Номер записи: 2
27-07-2016 дата публикации

Concrete conveying pipe shock attenuation bracket

Номер: CN0205400075U
Автор: HUANG XINYUE, GAO FENG, BAO HUIBIAO, DING YI, HONG FENG
Принадлежит:

... 本实用新型涉及种混凝土输送管减震托架，包括架体，于所述架体的四个角部分别与支撑脚的端连接，于各支撑脚的另端均连接减震垫；对带有球面轴承的轴承座安装在架体上，于对轴承座之间还连接辊子；至少在架体侧表面还固接侧挡架。利用架体及支撑脚能有效的将水平输送管与钢筋骨架之间的滑动摩擦变为输送管与辊子之间的滚动摩擦，支撑脚的布置避免了与钢筋骨架的直接接触，大大减少了摩擦力的产生，通过设置减震垫可以有效的保护钢筋、模板成品，保证混凝土浇筑质量。侧挡架的布置便于工人可以直接手提移动，满足不同场合下的施工，使本实用新型的可移动性大大提高，而软质海绵垫的布置具有防滑功能，增加工人手掌拿捏的摩擦力。 ...

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Номер записи: 3
23-06-2023 дата публикации

Safety risk evaluation method for engineering construction of LNG receiving station

Номер: CN116307702A
Автор: BI JIANWEI, DING YI, ZHOU HAIJUN, LIANG XIAONAN, WU BIN, SHEN YONGLIANG
Принадлежит:

The invention discloses a safety risk evaluation method for engineering construction of an LNG receiving station. According to the method, by identifying the safety risk existing in the engineering construction of the LNG receiving station, the evaluation indexes in the safety evaluation index system are determined, and the safety risk list is formulated, and the overall risk of the engineering construction process of the LNG receiving station is evaluated based on the overall risk evaluation model. A special risk evaluation model is constructed to evaluate the risk level of risk operation in each construction area, and a multilateral operation risk evaluation model is constructed to perform risk evaluation on multilateral operation in engineering construction of the LNG receiving station and provide a risk control means; and finally, formulating an LNG receiving station engineering construction safety risk prevention and control scheme by integrating the overall risk level of the LNG receiving ...

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Номер записи: 4
18-07-2023 дата публикации

Formation pore pressure evaluation method based on difference quantity prediction

Номер: CN116448878A
Автор: LIANG LIXI, DU JINGSHAN, LIU XIANGJUN, SHI XIN, XIONG JIAN, DING YI, WU XIAOHONG, ZHOU YAN, CHEN JINXIA
Принадлежит:

The invention discloses a formation pore pressure evaluation method based on difference quantity prediction in the fields of geomechanics, oil and gas well engineering and petroleum and natural gas exploitation. The method comprises the following steps that 1, the relation between the interval transit time variation and the porosity variation is established; step 2, establishing a relationship between the pore pressure variation and the interval transit time variation; 3, the porosity and interval transit time differences between the target layer section and the comparison reference layer are analyzed; 4, calculating the interval transit time difference quantity related to the pore pressure between the target layer section and the comparison reference layer; and 5, predicting the pore pressure difference quantity between the target layer section and the comparison reference layer, and calculating the formation pore pressure. The invention provides a brand new theory and method for prediction ...

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Номер записи: 5
09-05-2023 дата публикации

Automobile EPS drive axle external short circuit overcurrent detection system, automobile EPS and automobile

Номер: CN116087602A
Автор: WANG JING, YU DAOBAO, DING MINGGANG, DING YI, ZHANG SHENG
Принадлежит:

The invention discloses an automobile electric power steering device drive axle external short circuit and overcurrent detection system which comprises a current sensor A1 arranged in a power supply loop between a drive axle and a motor M and a current sensor A2 arranged between an automobile battery and the drive axle. The output end of the current sensor A1 and the output end of the current sensor A2 are both connected with a controller MCU of the electric power steering device. The controller MCU controls the drive axle of the electric power steering device according to the current collected by the current sensor A1 and the current sensor A2. The circuit has the advantages that the circuit is simple in structure, low in cost and convenient to implement; the short-circuit overcurrent fault between the drive axle and the motor can be effectively, accurately and reliably detected according to the two current sensors, the work of the drive axle is cut off and stopped while an alarm is given ...

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Номер записи: 6
06-06-2023 дата публикации

Stratum stress sensitivity evaluation method based on sound wave response

Номер: CN116223213A
Автор: LIANG LIXI, LUO ZHIHANG, LIU XIANGJUN, DING YI, SHI XIN, XIONG JIAN, WU XIAOHONG, CHEN JINXIA, ZHOU YAN
Принадлежит:

The invention provides a formation stress sensitivity evaluation method based on sound wave response. Comprising the following steps: 1, calculating and determining stratum effective confining pressure and experimental test confining pressure points; 2, preparing a representative rock core test sample and selecting a sound wave test frequency; 3, testing the sound wave velocity of the rock core sample under different confining pressures; and 4, calculating stress sensitivity coefficients of the rock core sample under different confining pressures by using the wave velocity of the sound wave. The method is not only suitable for high-porosity and high-permeability stratums and medium-porosity and medium-permeability stratums, but also can be used for conveniently evaluating the stress sensitivity of low-porosity and low-permeability stratums, ultra-low-porosity and ultra-low-permeability stratums and the like, and overcomes the defects that the permeability of the low-porosity and low-permeability ...

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Номер записи: 7
20-06-2023 дата публикации

Intelligent model compression optimization method and system for limited resource conditions

Номер: CN116266280A
Автор: CHEN ZHEN, YANG QUAN, DING YI, ZHU GE, YAO YAO, LEE YOUNG KWAN
Принадлежит:

The invention provides a limited resource condition-oriented intelligent model compression optimization method and system, and the method comprises the steps: obtaining an initial intelligent model and a conversion target which comprises a target framework and a target parameter condition; converting the initial intelligent model based on a pruning algorithm and a quantization algorithm of preset initial parameters to obtain an updated intelligent model of the initial parameters, inputting the data set into the updated intelligent model, and calculating actual accuracy and actual reasoning time; comparing with the target accuracy and the target reasoning time; calculating an actual compression ratio according to the size of the updated intelligent model, and comparing the actual compression ratio with a target compression ratio; determining whether a target parameter condition is met based on a comparison result; if not, adjusting the initial parameters to be updated parameters, and converting ...

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Номер записи: 8
23-06-2023 дата публикации

Method for predicting dynamic osmotic pressure of shale formation

Номер: CN116297084A
Автор: DING YI, LIU XIANGJUN, LIANG LIXI, XIONG JIAN, HOU LIANLANG
Принадлежит:

The invention relates to a mud shale stratum dynamic osmotic pressure prediction method which comprises the following steps: based on a mud shale cylindrical sample, obtaining the porosity, the density and the cation exchange capacity of mud shale, and calculating to obtain internal and external solute concentration parameters of the mud shale so as to obtain the initial membrane efficiency of the mud shale; testing to obtain the activity of the drilling fluid and the shale, on this basis, carrying out a drilling fluid and shale soaking experiment, testing to obtain the porosity and density of the shale under different times of drilling fluid action, and further calculating the membrane efficiency degradation coefficient of the shale under different drilling times; and integrating the drilling fluid activity, the shale activity, the initial membrane efficiency and the membrane efficiency degradation coefficient to establish the shale stratum dynamic osmotic pressure prediction method considering ...

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Номер записи: 9