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海域天然气水合物试采实践与技术分析 被引量:17
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作者 王星 孙子刚 +3 位作者 张自印 lawrence lau 粟玲 王彬 《石油钻采工艺》 CAS CSCD 北大核心 2017年第6期744-750,共7页
天然气水合物作为当下备受关注的潜在新型清洁能源资源,绝大部分赋存于水深大于300 m的海底沉积层中,日本与中国相继应用深水钻井船和半潜式平台进行了海域天然气水合物的试采实践,均取得一定成果。中国南海海域天然气水合物储量丰富,... 天然气水合物作为当下备受关注的潜在新型清洁能源资源,绝大部分赋存于水深大于300 m的海底沉积层中,日本与中国相继应用深水钻井船和半潜式平台进行了海域天然气水合物的试采实践,均取得一定成果。中国南海海域天然气水合物储量丰富,进一步探究行之有效的方法与工艺,实现安全、稳定、高效的商业化开采,对于解决日益严峻的能源紧缺及环境恶化问题具有重要意义。通过国内外技术调研,对降压、注热、注剂等开采方法进行研究,结合日本海域天然气水合物的试采实践,对其试采的前期准备、设计准则与难点、工艺方案、生产测试系统关键组成部分以及存在的气液分离效率、出砂、流动保障等问题进行深入分析,并提出了相关的优化改进建议,为后续海域天然气水合物试采设计和施工提供借鉴。 展开更多
关键词 清洁能源 可燃冰 天然气水合物 半潜式平台 降压 试采
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Radiology education in Europe: Analysis of results from 22 European countries 被引量:1
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作者 Bhavya Rehani Yi C Zhang +4 位作者 Madan M Rehani András Palkó lawrence lau Miriam N Mikhail Lette William P Dillon 《World Journal of Radiology》 CAS 2017年第2期55-62,共8页
AIMTo assess the state of radiology education across Europe by means of a survey study.METHODSA comprehensive 23-item radiology survey was distributed via email to the International Society of Radiology members, natio... AIMTo assess the state of radiology education across Europe by means of a survey study.METHODSA comprehensive 23-item radiology survey was distributed via email to the International Society of Radiology members, national radiological societies, radiologists and medical physicists. Reminders to complete the survey were sent and the results were analyzed over a period of 4 mo (January-April 2016). Survey questions include length of medical school and residency training; availability of fellowship and subspecialty training; number of residency programs in each country; accreditation pathways; research training; and medical physics education. Descriptive statistics were used to analyze and summarize data.RESULTSRadiology residency training ranges from 2-6 years with a median of 5 years, and follows 1 year of internship training in 55% (12 out of 22) European countries. Subspecialty fellowship training is offered in 55% (12 out of 22) European countries. Availability for specialization training by national societies is limited to eight countries. For nearly all respondents, less than fifty percent of radiologists travel abroad for specialization. Nine of 22 (41%) European countries have research requirements during residency. The types of certifying exam show variation where 64% (14 out of 22) European countries require both written and oral boards, 23% (5 out of 22) require oral examinations only, and 5% (1 out of 22) require written examinations only. A degree in medical physics is offered in 59% (13 out of 22) European countries and is predominantly taught by medical physicists. Nearly all respondents report that formal examinations in medical physics are required.CONCLUSIONComparative learning experiences across the continent will help guide the development of comprehensive yet pragmatic infrastructures for radiology education and collaborations in radiology education worldwide. 展开更多
关键词 Radiology education European radiology survey Radiology training RESIDENCY Radiology research
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国内深水钻完井流动保障能力:低油价下的应对之道
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作者 lawrence lau 陈云川 +1 位作者 粟玲 王星 《石化技术》 CAS 2017年第9期159-160,共2页
本文概述了流动保障(Flow Assurance)技术在深水钻完井设计与作业中,降低风险、减少成本、提高效率,增加深水钻完井经济性的作用。介绍了从可研到作业期间流动保障承担的重要作用,并举例说明针对深水水合物与段塞流问题进行的系统化管... 本文概述了流动保障(Flow Assurance)技术在深水钻完井设计与作业中,降低风险、减少成本、提高效率,增加深水钻完井经济性的作用。介绍了从可研到作业期间流动保障承担的重要作用,并举例说明针对深水水合物与段塞流问题进行的系统化管理策略,结果表明流动保障技术在国内深水长期开发中是不可或缺的。国内流动保障技术的发展和能力建设将依靠外部技术引进、与国际石油公司的合作以及内部标准的制定、科研攻关而实现。 展开更多
关键词 深水钻完井 流动保障 水合物 段塞流
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