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华北低渗透油藏烃气驱最小混相压力实验研究 被引量:6
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作者 黄伟 任红梅 +5 位作者 王莉 王哲 王睿思 邵敏敏 马樱 马铨铮 《天然气与石油》 2015年第4期47-50,10,共4页
为快速、准确地确定低渗透油藏注烃气驱提高原油采出程度技术的注气压力,进行了最小混相压力测定实验。通过细管实验方法结合华北油田Q区块的实际开发特点,研究了该区块自然衰竭开采效果以及原油在原始地层条件(压力24 MPa,温度74℃)及... 为快速、准确地确定低渗透油藏注烃气驱提高原油采出程度技术的注气压力,进行了最小混相压力测定实验。通过细管实验方法结合华北油田Q区块的实际开发特点,研究了该区块自然衰竭开采效果以及原油在原始地层条件(压力24 MPa,温度74℃)及目前地层条件(压力15MPa低于饱和压力,温度74℃)下与烃气混相的最小压力及气体突破时间,为该区块低渗透油藏烃类气驱注入压力的选择提供依据。实验结果表明:Q区块在目前地层条件下注烃类气驱的最小混相压力(62.75 MPa)要高于原始地层条件下的最小混相压力(54.77 MPa),并且注入压力越高,烃气突破越晚,最终采出程度越高。在目前油藏条件下不能实现混相驱,但适当提高注入压力,可实现烃气与原油近混相,最终达到提高原油采出程度的目的。 展开更多
关键词 最小混相压力 烃类气驱 自然衰竭 注入压力 采出程度
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Heart failure research in China: current status and future direction 被引量:3
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作者 Yuangui Zhu Ruijuan Sun Erdan Dong 《Science Bulletin》 SCIE EI CAS CSCD 2016年第23期1793-1801,共9页
Heart failure is a major public health problem worldwide. Despite advances in the therapy and care of heart failure, morbidity and mortality remain persistently high. Recent years have witnessed major breakthroughs in... Heart failure is a major public health problem worldwide. Despite advances in the therapy and care of heart failure, morbidity and mortality remain persistently high. Recent years have witnessed major breakthroughs in the investigations of pathogenesis, prevention, and treatment of heart failure in China. It is noteworthy that the continuing and growing support from funding agencies in China including the National Natural Science Foundation of China has yielded substantial effects on the basic and clinical research in heart failure in the last decade. In this review, we provide an update on the current status of heart failure research, both basic and translational/clinical, in China, including funding and publications. We also discuss the future challenges and possible strategies in improving our understanding and management of heart failure in China. 展开更多
关键词 Heart failure Basic research Translational research Clinical research China
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