文章基本信息

标题：A sand-production control system for gas production from clayey silt hydrate reservoirs
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作者：Yan-long Li ; Neng-you Wu ; Fu-long Ning 等
期刊名称：China Geology
印刷版ISSN：2096-5192
出版年度：2019
卷号：2
期号：2
页码：121-132
DOI：10.31035/cg2018081
语种：English
出版社：Elsevier
摘要：ABSTRACTSand production is a crucial problem during the process of extracting natural gas from hydrate reservoirs. To deal with sand-production problems systematically, a sand-production control system (SCS) is first proposed in this paper, specialized for pore-distributed clayey silt hydrate reservoirs. Secondly, a nodal system analysis method (NSAM) is applied to analyze the sand migration process during hydrate exploitation. The SCS is divided into three sub-systems, according to different sand migration mechanisms, and three key scientific problems and advances in SCS research in China Geological Survey are reviewed and analyzed. The maximum formation sanding rate, proper sand-control gravel size, and borehole blockage risk position were provided for clayey hydrate exploitation wells based on the SCS analysis. The SCS sub-systems are closely connected via bilateral coupling, and coordination of the subsystems is the basis of maintaining formation stability and prolonging the gas production cycle. Therefore, contradictory mitigation measures between sand production and operational systems should be considered preferentially. Some novel and efficient hydrate exploitation methods are needed to completely solve the contradictions caused by sand production.© 2019 China Geology Editorial Office.
关键词：KeywordsNatural gas hydrateHydrate exploitationSand-production managementSand productionSand controlNodal system analysis