A study of hydrate plug formation in a subsea natural gas pipeline using a novel high-pressure flow loop

查看全文 作　　者：Li [1]Wenqing;Gong [1]Jing;Lü [1]Xiaofang;Zhao [2]Jiankui;Feng [3]Yaorong;Yu [1]Da

机构地区：[1]Beijing Key Laboratory of Urban Oil and Gas Distribution Technology,China University of Petroleum;[2]China National Oil and Gas Exploration and Development Corporation;[3]CNPC Tubular Goods Research Institute

出　　处：《Petroleum Science》索引2013年第10卷第1期,共9页

基　　金：support from Subtopics of National Science and Technology Major Project(2011ZX05026-004-03);the National Natural Science Foundation of China (51104167) 摘　　要：The natural gas pipeline from Platform QK18-1 in the southwest of Bohai Bay to the onshore processing facility is a subsea wet gas pipeline exposed to high pressure and low temperature for a long distance. Blockages in the pipeline occur occasionally. To maintain the natural gas flow in the pipeline, we proposed a method for analyzing blockages and ascribed them to the hydrate formation and agglomeration. A new high-pressure flow loop was developed to investigate hydrate plug formation and hydrate particle size, using a mixture of diesel oil, water, and natural gas as experimental fluids. The influences of pressure and initial flow rate were also studied. Experimental results indicated that when the flow rate was below 850 kg/h, gas hydrates would form and then plug the pipeline, even at a low water content (10%) of a water/oil emulsion. Furthermore, some practical suggestions were made for daily management of the subsea pipeline. 关键词：海底天然气管道水合物循环高压压力流量颗粒大小经营管理海底管道

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A study of hydrate plug formation in a subsea natural gas pipeline using a novel high-pressure flow loop

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