基于射流泵原理的发泡液-水泥浆混合器设计
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摘要
在采用化学发气法生产泡沫水泥的流程中,发泡液-水泥浆混合器是一种重要的设备。基于射流泵基本原理,推导了发泡液-水泥浆混合器基本性能方程、气蚀性能方程以及最优参数方程,编制了设计软件,完成了发泡液-水泥浆混合器的结构设计,混合器利用2股具有速度差的流体通过强剪切进行混合,在结构和设计相关理论方面与射流泵类似。由Fluent流场仿真分析可知,此种结构的混合器在喉管前段混合最为剧烈,在出口处水泥浆与发泡液基本呈现均匀分布状态,混合效果达到设计要求。所得结果为进一步实施工程制造和现场应用提供了必要条件。
The foaming fluid-cement slurry mixer is an important equipment for producing foamed cement by chemical gas generation. Based on the basic principle of jet pump,the basic performance equation,cavitation performance equation and optimal parameter equation of foaming fluid-cement slurry mixer were deduced. Then,the design software was compiled. The structural design of the foaming fluid-cement slurry mixer was completed. And it mixes the two fluids with differential velocities through strong shearing. And it has similar theory in terms of the structure and design compared to the jet pump. The Fluent flow field simulation analysis showed that the mixer shows the most intense mixing in the front section of the throat,and the cement slurry and the foaming fluid are basically distributed uniformly at the outlet with the mixing performance meeting the design requirements. The study provides necessary conditions for further implementation of engineering manufacturing and field applications of the foaming fluid-cement slurry mixer.
The foaming fluid-cement slurry mixer is an important equipment for producing foamed cement by chemical gas generation. Based on the basic principle of jet pump,the basic performance equation,cavitation performance equation and optimal parameter equation of foaming fluid-cement slurry mixer were deduced. Then,the design software was compiled. The structural design of the foaming fluid-cement slurry mixer was completed. And it mixes the two fluids with differential velocities through strong shearing. And it has similar theory in terms of the structure and design compared to the jet pump. The Fluent flow field simulation analysis showed that the mixer shows the most intense mixing in the front section of the throat,and the cement slurry and the foaming fluid are basically distributed uniformly at the outlet with the mixing performance meeting the design requirements. The study provides necessary conditions for further implementation of engineering manufacturing and field applications of the foaming fluid-cement slurry mixer.
引文
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[13]高传昌,王玉川.液气射流泵研究应用进展[J].石油机械,2008,36(2):67-70.GAO C C,WANG Y C.Research and application progress of liquid gas jet pump[J].China Petroleum Machinery,2008,36(2):67-70.
[2]刘建红,王莉,吴国勤,等.泡沫水泥固井工艺研究[J].内蒙古石油化工,2011(18):28-29.LIU J H,WANG L,WU G Q,et al.Research on foam cement cementing technology[J].Inner Mongolia Petrochemical Industry,2011(18):28-29.
[3]屈建省,宋有胜,贾芝,等.适用于长庆油田固井的超低密度泡沫水泥浆[J].钻井液与完井液,1997,14(4):27-28.QU J S,SONG Y S,JIA Z,et al.Foamed cement with ultralow density used in Changqing oil field:Improving cementing result[J].Drilling Fluid and Completion Fluid,1997,14(5):27-28.
[4]贾芝,胡富源,郭卫军,等.用于封固气层的泡沫水泥浆固井技术[J].钻井液与完井液,2003,20(2):22-24.JIA Z,HU F Y,GUO W J,et al.Foamed cement slurry cementing technology used in plugging reservoir[J].Drilling Fluid and Completion Fluid,2003,20(2):22-24.
[5]应建成.新型泡沫水泥浆体系在胜利油田莱州湾区块的应用[J].钻采工艺,2009,32(6):113-115.YING J C.Application of new type of foam cement slurry system in Shengli oilfield[J].Drilling&Production Technology,2009,32(6):113-115.
[6]DE WEERD A,AL HANSHI S,AL AGHBARI S.Innovative application of foamed cement for zonal isolation of a tieback casing across highly corroded casing[R].SPE 128261-MS,2010.
[7]BERARD B,HERNáNDEZ R,NGUYEN H.Foamed calcium aluminate phosphate cement enables drilling and cementation of california geothermal wells[R].SPE120845-MS,2009.
[8]ROBERT M,MONCRIEF O,DANIEL B,et al.Hightemperature wells with lost-circulation demands and reverse-circulation techniques using foamed-cement systems:Two case histories[J].SPE Drilling&Completion,2005,20(2):133-140.
[9]BOZICH M P,MONTMAN R C,HARMS W M.Application of foamed portland cement to deep well conditions in west texas[R].SPE 12612-MS,1984.
[10]CHMILOWSKI W,KONDRATOFF L B.Foamed cement forsqueeze cementing low-pressure,highly permeable reservoirs:Design and evaluation[J].SPE Drilling Engineering,1992,7(4):284-290.
[11]谭文礼,邹建龙.国内外固井技术发展状况[C]∥第四届石油钻井院所长会议论文集.北京:石油工业出版社,2004.TAN W L,ZOU J L.Development of cementing technology at home and abroad[R]∥Symposium of the4th Petroleum Drilling Institute Director.Beijing:Petroleum Industry Press,2004.
[12]刘大为,田锡君,廖润康.现代固井技术[M].沈阳:辽宁科学技术出版社,1994.LIU D W,TIAN X J,LIAO R K.Modern cementing technology[M].Shenyang:Liaoning Science and Technology Press,1994.
[13]高传昌,王玉川.液气射流泵研究应用进展[J].石油机械,2008,36(2):67-70.GAO C C,WANG Y C.Research and application progress of liquid gas jet pump[J].China Petroleum Machinery,2008,36(2):67-70.