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Exploration and practice of offshore oilfield effective development technology

Zhou Shouwei

Strategic Study of CAE 2009, Volume 11, Issue 10,   Pages 55-60

Abstract: And the Optimized Fast Drilling Technology adapting to offshore oilfield development was developed whichcould significantly reduce the drilling cost.Polymer flooding,as the main EOR technology, with drilling and production support technology system in

Keywords： offshore oil field     efficient development     heavy oil     marginal oil field     the optimized fast drilling    

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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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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: justify;">Flexural equation was established in this paper, which was based on application of deepwater drillingTherefore, simple calculation method for natural frequency of drilling riser was achieved.Free-hinged beam was taken as constraint condition of flexural equation combined with drilling stringPurpose 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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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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concentration of gluconic acid from an integrated fermentation and membrane process using response surface optimized

Parimal Pal, Ramesh Kumar, Subhamay Banerjee

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1,   Pages 152-163 doi: 10.1007/s11705-018-1721-z

Abstract: A response surface method was used to optimize the purification and concentration of gluconic acid from fermentation broth using an integrated membrane system. was used for the bioconversion of the glucose in sugarcane juice to gluconic acid (concentration 45 g?L ) with a yield of 0.9 g?g . The optimum operating conditions, such as trans-membrane pressure (TMP), pH, cross-flow rate (CFR) and initial gluconic acid concentration, were determined using response surface methodology. Five different types of polyamide nanofiltration membranes were screened and the best performing one was then used for downstream purification of gluconic acid in a flat sheet cross-flow membrane module. Under the optimum conditions (TMP= 12 bar and CFR= 400 L?h ), this membrane retained more than 85% of the unconverted glucose from the fermentation broth and had a gluconic acid permeation rate of 88% with a flux of 161 L?m ?h . Using response surface methods to optimize this green nanofiltration process is an effective way of controlling the production of gluconic acid so that an efficient separation with high flux is obtained.

Keywords： gluconic acid     optimized nanofiltration     green processing     process intensification    

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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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Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

Frontiers in Energy 2021, Volume 15, Issue 4,   Pages 832-841 doi: 10.1007/s11708-021-0777-5

Abstract: dioxide (SCO2) Brayton cycle has become an ideal power conversion system for sodium-cooled fast

Keywords： sodium-cooled fast reactor (SFR)     supercritical carbon dioxide (SCO2)     brayton cycle     load    

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Erratum to: Optimized determination of airborne tetracycline resistance genes in laboratory atmosphere

Lu Song, Can Wang, Yizhu Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1289-y

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Dynamic simulation based optimized design method of concrete production system for RCC dam

ZHAO Chunju, ZHOU Yihong

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 4,   Pages 405-410 doi: 10.1007/s11709-007-0055-6

Abstract: The construction system of roller compacted concrete (RCC) dam is running according to a series of connected procedures which are highly impacted and interacted consisting with the resource level. Therefore, a dynamic simulation mode

Keywords： interacted     dynamic simulation     construction     resource     RCC    

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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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the terrain adaptability of a multirobot cooperative transportation system via novel connectors and optimized

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0754-2

Abstract: Given limited terrain adaptability, most existing multirobot cooperative transportation systems (MRCTSs) mainly work on flat pavements, restricting their outdoor applications. The connectors’ finite deformation capability and the control strategies’ limitations are primarily responsible for this phenomenon. This study proposes a novel MRCTS based on tracked mobile robots (TMRs) to improve terrain adaptability and expand the application scenarios of MRCTSs. In structure design, we develop a novel 6-degree-of-freedom passive adaptive connector to link multiple TMRs and the transported object (the communal payload). In addition, the connector is set with sensors to measure the position and orientation of the robot with respect to the object for feedback control. In the control strategy, we present a virtual leader–physical follower collaborative paradigm. The leader robot is imaginary to describe the movement of the entire system and manage the follower robots. All the TMRs in the system act as follower robots to transport the object cooperatively. Having divided the whole control structure into the leader robot level and the follower robot level, we convert the motion control of the two kinds of robots to trajectory tracking control problems and propose a novel double closed-loop kinematics control framework. Furthermore, a control law satisfying saturation constraints is derived to ensure transportation stability. An adaptive control algorithm processes the wheelbase uncertainty of the TMR. Finally, we develop a prototype of the TMR-based MRCTS for experiments. In the trajectory tracking experiment, the developed MRCTS with the proposed control scheme can converge to the reference trajectory in the presence of initial tracking errors in a finite time. In the outdoor experiment, the proposed MRCTS consisting of four TMRs can successfully transport a payload weighing 60 kg on an uneven road with the single TMR’s maximum load limited to 15 kg. The experimental results demonstrate the effectiveness of the structural design and control strategies of the TMR-based MRCTS.

Keywords： multirobot system     cooperative transportation     terrain adaptability     trajectory tracking     collaborative paradigm     uneven road    

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The Research and Implementation of EAP - FAST Protocol in Public Wireless Local Area Network

Cao Ping,Pei Wenjiang

Strategic Study of CAE 2005, Volume 7, Issue 12,   Pages 78-82

Abstract: protocol is vulnerable to dictionary attacks, the flexible authentication via secure tunneling (EAP - FASTand design this protocol in public wireless local area network, and implement the function of EAP - FASTpeer, authenticator and FAST server in PWLAN integrate experimentation flat.

Keywords： network     port based network access control (802.1x)     flexible authentication via secure tunneling (EAP —FAST    

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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    

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A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1688-y

Abstract:

● A novel VMD-IGOA-LSTM model has proposed for the prediction of water quality.

Keywords： Water quality prediction     Grasshopper optimization algorithm     Variational mode decomposition     Long short-term memory neural network    

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Title Author Date Type Operation

Exploration and practice of offshore oilfield effective development technology

Zhou Shouwei

Journal Article

Investigation on drilling-grinding of CFRP

Yanming QUAN, Wenwang ZHONG

Journal Article

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

Jiang Wei

Journal Article

The optimum drilling technique in the northeast area of Sichuan

Han Laiju,Ma Guangjun,Zhao Jinhai

Journal Article

concentration of gluconic acid from an integrated fermentation and membrane process using response surface optimized

Parimal Pal, Ramesh Kumar, Subhamay Banerjee

Journal Article

Development Path of Offshore Drilling Equipment in China

Liu Jian

Journal Article

Effects of delamination in drilling glass/polyester composite

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

Journal Article

Preliminary design of an SCO conversion system applied to the sodium cooled fast reactor

Journal Article

Erratum to: Optimized determination of airborne tetracycline resistance genes in laboratory atmosphere

Lu Song, Can Wang, Yizhu Wang

Journal Article

Dynamic simulation based optimized design method of concrete production system for RCC dam

ZHAO Chunju, ZHOU Yihong

Journal Article

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

Journal Article

the terrain adaptability of a multirobot cooperative transportation system via novel connectors and optimized

Journal Article

The Research and Implementation of EAP - FAST Protocol in Public Wireless Local Area Network

Cao Ping,Pei Wenjiang

Journal Article

Permeability testing of drilling core sample from pavement

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

Journal Article

A novel hybrid model for water quality prediction based on VMD and IGOA optimized for LSTM

Journal Article