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Calculation and research on deepwater drilling riser flexural equation and natural frequency

Jiang Wei

Strategic Study of CAE 2011, Volume 13, Issue 5, Pages 66-73

Abstract: text-align: justify;">Flexural equation was established in this paper, which was based on application of deepwaterdrilling riser and Ritz methods in elastoplastic mechanics.Therefore, simple calculation method for natural frequency of drilling riser was achieved.Purpose of research was to provide reasonable design and selection for deepwater drilling riser, andprovide a more efficient and applied method, which would show guiding significance for deepwater drilling

Keywords： deepwater drilling drilling riser flexural equation natural frequency shape function

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Investigation on drilling-grinding of CFRP

Yanming QUAN, Wenwang ZHONG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1, Pages 60-63 doi: 10.1007/s11465-009-0008-y

Abstract: Conventional drills have a very short life in the drilling of this kind of composites and the qualitymechanism of the two kinds of diamond tools is not like the cutting effect of the conventional solid twist drilling

Keywords： composites drilling-grinding cemented/plated diamond tool life machined quality

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Risk Identification and Mitigation Strategies for Deepwater Oilfields Development

Bao-quan Yang,Li Yang,Fan-jie Shang,Xin Zhang,Chen-xi Li

Frontiers of Engineering Management 2016, Volume 3, Issue 4, Pages 356-361 doi: 10.15302/J-FEM-2016057

Abstract: Deepwater oilfields will become main sources of the world’s oil and gas production.main uncertainties, proposes mitigation strategies, and provides valuable experiences for the other deepwater

Keywords： deepwater oilfield field development plan implementation reservoir management risk identification mitigation

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The optimum drilling technique in the northeast area of Sichuan

Han Laiju,Ma Guangjun,Zhao Jinhai

Strategic Study of CAE 2010, Volume 12, Issue 10, Pages 44-49

Abstract: complicated, which causes many complex cases and accidents like lost circulation and collapse when drillingROP was slow and drilling cycle was long.deepwell in south China, through introducing and developing new technology and new tools, like gas drillingand vertical drilling equipments, combined with existing techniques such as underbalanced drilling,compound drilling, optimum drilling technique system fit for complicated deepwell in northeast area of

Keywords： northeast area of Sichuan optimum drilling gas drilling vertical drilling MPD with lower-densitydrilling fluid bit optimization compound drilling

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The Innovation of the Yangtze Estuary Deepwater Channel Improvement Project

Fan Qijin

Strategic Study of CAE 2004, Volume 6, Issue 12, Pages 13-26

Abstract: Depending on technical innovation and strict, scientific management, the unprecedented Yangtze Estuary deepwater

Keywords： Yangtze Estuary deepwater channel engineering management designing construction

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Development Strategy for Aquaculture Facility and Deepwater Aquaculture Platform

Xu Hao

Strategic Study of CAE 2016, Volume 18, Issue 3, Pages 37-42 doi: 10.15302/J-SSCAE-2016.03.006

Abstract:

In order to the concept of the ecological priorcty and green development, to transform the extensive mode of production in the past, we must vigorously carry out research and development of facilities and equipment to improve the level of equipent and technology in China. This is the only way to promote the healthy and sustainable development of Chinese aquaculture industry. This paper examines the applications of aquaculture facilities and equipment in China, the main problems in the development of aquaculture engineering, and key technologies for the improvement of aquaculture engineering application. Measures for future research and the continued development of aquaculture facilities and equipment are also proposed.

Keywords： aquaculture facility deepwater aquaculture platform development strategy

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Application of subsea multiphase flow meter in the development of deepwater oil and gas fields

Liu Taiyuan,Guo Hong and Zheng Lijun

Strategic Study of CAE 2012, Volume 14, Issue 11, Pages 69-74

Abstract:

The remarkable development of science and technology speeds up the development of the deeper oil and gas field offshore via subsea production system. In order to optimize the reservoir, the well fluid to be monitored and measured to get enough information transmitted to the topside being processed and analysis. Recent years there are more and more subsea multiphase flow meters installed and being in operation. The principles of multiphase flow measurement are introduced and other factors relevant to the measurement scope, installation location and the communication are discussed. The feasibility of cases is also presented and it is helpful for the selection of subsea multiphase flow meters installation.

Keywords： deepwater subsea multiphase flow meter flow assurance reservoir optimization field development

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Strategies of Efficient Exploration and Development of Deepwater Oil and Gas Overseas

Wen-ming Han,Shui Yu,Hong-yan Zhao,Yang Zhao,Liang Chen

Frontiers of Engineering Management 2016, Volume 3, Issue 4, Pages 314-320 doi: 10.15302/J-FEM-2016050

Abstract: Deepwater offshore area, with rich oil and gas resources, has currently become the hot area for oil andThis article summarizes the current situation of deepwater oil and gas exploration and development overseaspromote Chinese oil companies’ overseas exploration, and realize efficient exploration and development of deepwaterwhile taking efforts to innovate technologies and theories, updates strategic ideas, and cultivate deepwatertalents so as to be in an active position in global deepwater exploration and development industry in

Keywords： deepwater exploration and development operation principle exploration idea exploration strategy

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Development Path of Offshore Drilling Equipment in China

Liu Jian

Strategic Study of CAE 2020, Volume 22, Issue 6, Pages 40-48 doi: 10.15302/J-SSCAE-2020.06.006

Abstract:

China has made achievements in offshore drilling equipment, and it cannow develop the shallow-water drilling rigs independently.However, as far as deep-water drilling equipment is concerned, there still exists a big gap between ChinaTo accelerate the development of China’s offshore drilling equipment, this study first analyzesmachine, deep-water drilling machine, and new-type marine drilling machine; it then summarizes the development

Keywords： offshore drilling rig deep-water drilling rig development of equipment test sea test

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Effects of delamination in drilling glass/polyester composite

Mehdi GANJIANI, Majid SAFARABADI, Nabi MEHRI-KHANSARI, Hossein ORUJI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2, Pages 552-567 doi: 10.1007/s11709-021-0699-7

Abstract: Considering failures during machinery processes such as drilling, a precautionary analysis involvingeffect of mode delamination and corresponding interlaminar crack propagation was considered during the drilling

Keywords： delamination VCCT ARCAN specimen drilling mode II

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Experimental investigation on dynamic response ofchamber to simulate deepwater explosive

Zhong Dongwang,Li Linna

Strategic Study of CAE 2014, Volume 16, Issue 11, Pages 78-81

Abstract: was conducted for the dynamic response of a real spherical explosive chamber that can simulate 200m deepwaterand static pressure．It provides reference for the design and development of the vessel to simulate deepwater

Keywords： deepwater explosive explosive chamber dynamic response strain

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Analysis of physical properties of gas hydrate-bearing unconsolidated sediment samples from the ultra-deepwater

Frontiers in Energy 2022, Volume 16, Issue 3, Pages 509-520 doi: 10.1007/s11708-021-0786-4

Abstract: Marine natural gas hydrate has recently attracted global attention as a potential new clean energy source. Laboratory measurements of various physical properties of gas hydrate-bearing marine sediments can provide valuable information for developing efficient and safe extraction technology of natural gas hydrates. This study presents comprehensive measurement results and analysis of drilled hydrate-bearing sediments samples recovered from Qiongdongnan Basin in the South China Sea. The results show that the gas hydrate in the core samples is mainly methane hydrate with a methane content of approximately 95%, and the other components are ethane and carbon dioxide. The saturation of the samples fluctuates from 2%–60%, the porosity is approximately 38%–43%, and the water content is approximately 30%–50%, which indicate that high water saturation means that timely drainage should be paid attention to during hydrate extraction. In addition, the median diameter of the sediment samples is mainly distributed in the range of 15 to 34 μm, and attention should be paid to the prevention and control of sand production in the mining process. Moreover, the thermal conductivity is distributed in the range of 0.75 to 0.96 W/(m∙K) as measured by the flat plate heat source method. The relatively low thermal conductivity of hydrates at this study site indicates that a combined approach is encouraged for natural gas production technologies. It is also found that clay flakes and fine particles are attached to the surface of large particles in large numbers. Such characteristics will lead to insufficient permeability during the production process.

Keywords： natural gas hydrates physical properties analysis hydrate-bearing sediments

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Exploring a heavily water-based inland transport pattern for Hengsha deepwater port

Peng Deyan,Qin Xiaochuan

Strategic Study of CAE 2013, Volume 15, Issue 6, Pages 86-90

Abstract: article focuses on finding a heavily water-based inland transport pattern for the conceptive Hengsha Deepwater

Keywords： Shanghai Port deepwater port east Hengsha shoal inland transport the Yangtze River inner lateral

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Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4, Pages 538-546 doi: 10.1007/s11465-020-0598-y

Abstract: The advanced longitudinal–torsional coupled ultrasonic vibration assisted drilling (LTC-UAD) method hasa potential application for drilling CFRP composites.At present, LTC-UAD is mainly adopted for drilling metal materials and rarely for CFRP.Therefore, this study analyzes the kinematic characteristics and the influence of feed rate on the drillingThus, LTC-UAD is an applicable process method for drilling components made with CFRP composites.

Keywords： longitudinal–torsional coupled ultrasonically drilling CFRP thrust force hole quality

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Permeability testing of drilling core sample from pavement

WANG Suda, TANG Zhengguang, NING Xiaojun, WU Peiguan, XING Pingyi

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4, Pages 391-394 doi: 10.1007/s11709-008-0045-3

Abstract: New equipment is used to measure the permeability coefficient of the pavement drilling core sample andTesting drilling core samples from a certain highway of Yunnan province has been proven to be feasible

Keywords： province material feasible permeability coefficient equipment