导流片型油水旋流分离器的入口结构优化
|
摘要
导流片型油水旋流分离器是一种新型井下油水分离器,为了提高其进行超大处理量油水分离时的性能,对导流片进行了结构优化研究。加工了两种结构的导流片,并在室内搭建了试验系统,对油水两相流经导流片的流动规律开展了试验研究。研究结果表明:在相同的入口工况下,油滴经流线型导流片后破碎程度小、平均直径大、迁移运动后所形成的油核较细,油水两相流经流线型导流片所产生的压降要远低于直板型导流片所产生的压降。因此,在超大处理量时,应优选流线型导流片作为井下油水旋流分离器的起旋结构。
The vane-type oil-water cyclone separator is a new type of downhole oil-water separator. To improve the performance of oil-water separation during treatment of super-large volume liquid,the structure optimization of the vane is studied. Two kinds of vane structures were processed. A test system was set up indoors. The flow of the oil-water two-phase flow through the vane was studied. The results show that given the same inlet conditions,the oil droplet through the streamlined vane has a small degree of fragmentation,a large average diameter,and a fine oil core formed after the migration movement. The pressure drop generated by the oil-water two-phase flow through the streamlined vane is much lower than that produced by the straight vane. Therefore,in the case of treating an excessively large volume liquid,a streamlined vane should be preferred as the swirl generating structure of the downhole oil-water cyclone separator.
The vane-type oil-water cyclone separator is a new type of downhole oil-water separator. To improve the performance of oil-water separation during treatment of super-large volume liquid,the structure optimization of the vane is studied. Two kinds of vane structures were processed. A test system was set up indoors. The flow of the oil-water two-phase flow through the vane was studied. The results show that given the same inlet conditions,the oil droplet through the streamlined vane has a small degree of fragmentation,a large average diameter,and a fine oil core formed after the migration movement. The pressure drop generated by the oil-water two-phase flow through the streamlined vane is much lower than that produced by the straight vane. Therefore,in the case of treating an excessively large volume liquid,a streamlined vane should be preferred as the swirl generating structure of the downhole oil-water cyclone separator.
引文
[1]刘合,高扬,裴晓含,等.旋流式井下油水分离同井注采技术发展现状及展望[J].石油学报,2018,39(4):463-471.LIU H,GAO Y,PEI X H,et al. Progress and prospect of downhole cyclone oil-water separation with single-well injection-production technology[J]. Acta Petrolei Sinica,2018,39(4):463-471.
[2]周晓军.井下油水分离系统及往复式双液流泵设计[J].石油机械,2000,28(9):1-4.ZHOU X J. Downhole oil-water separation system and reciprocating dual flow pump design[J]. China Petroleum Machinery,2000,28(9):1-4.
[3]马玉琴,李海金.井下油水分离新技术[J].国外油田工程,2001,17(8):22-23.MA Y Q,LI H J. New technology of downhole oil-water separation[J]. Foreign Oilfield Engineering,2001,17(8):22-23.
[4]姜建平,谢双喜,陈学政,等.海上油田井下油水分离系统的优化设计[J].长春理工大学学报(自然科学版),2010,33(4):120-123.JIANG J P,XIE S X,CHEN X Z,et al. Optimal design on downhole oil-water separation system of offshore oilfield[J]. Journal of Changchun University of Science and Technology(Natural Science Edition),2010,33(4):120-123.
[5]张丽稳.海上用井下油水分离系统旋流分离器研究[D].北京:北京化工大学,2012.ZHANG L W. Design and experimental research of high volume downhole oil-water separation system for offshore oilfield[D]. Beijing:Beijing University of Chemical Technology,2012.
[6] AMINI S,MOWLA D,GOLKAR M,et al. Mathematical modelling of a hydrocyclone for the down-hole oil-water separation(DOWS)[J]. Chemical Engineering Research&Design,2012,90(12):2186-2195.
[7]薄启炜,张琪,赵东伟,等.重力式井下油水分离确定分流比的实验研究[J].石油机械,2003,31(6):3-5.BO Q W,ZHANG Q,ZHAO D W,et al. Experimental research of split ratio determination of downhole gravitational oil-water separation[J]. China Petroleum Machinery,2003,31(6):3-5.
[8] MATTEWS C M. Application of downhole oil/water separation systems in the Alliance Field[R]. SPE 35817,1996.
[9] SHI S Y,XU J Y,SUN H Q,et al. Experimental study of a vane-type pipe separator for oil-water separation[J]. Chemical Engineering Research&Design Transactions of the Inst,2012,90(10):1652-1659.
[10]史仕荧.导流片型管道式分离器油水分离性能研究[D].北京:中国科学院大学,2013.SHI S Y. Study on oil-water separation performance of deflector tube separator[D]. Beijing:University of Chinese Academy of Sciences,2013.
[2]周晓军.井下油水分离系统及往复式双液流泵设计[J].石油机械,2000,28(9):1-4.ZHOU X J. Downhole oil-water separation system and reciprocating dual flow pump design[J]. China Petroleum Machinery,2000,28(9):1-4.
[3]马玉琴,李海金.井下油水分离新技术[J].国外油田工程,2001,17(8):22-23.MA Y Q,LI H J. New technology of downhole oil-water separation[J]. Foreign Oilfield Engineering,2001,17(8):22-23.
[4]姜建平,谢双喜,陈学政,等.海上油田井下油水分离系统的优化设计[J].长春理工大学学报(自然科学版),2010,33(4):120-123.JIANG J P,XIE S X,CHEN X Z,et al. Optimal design on downhole oil-water separation system of offshore oilfield[J]. Journal of Changchun University of Science and Technology(Natural Science Edition),2010,33(4):120-123.
[5]张丽稳.海上用井下油水分离系统旋流分离器研究[D].北京:北京化工大学,2012.ZHANG L W. Design and experimental research of high volume downhole oil-water separation system for offshore oilfield[D]. Beijing:Beijing University of Chemical Technology,2012.
[6] AMINI S,MOWLA D,GOLKAR M,et al. Mathematical modelling of a hydrocyclone for the down-hole oil-water separation(DOWS)[J]. Chemical Engineering Research&Design,2012,90(12):2186-2195.
[7]薄启炜,张琪,赵东伟,等.重力式井下油水分离确定分流比的实验研究[J].石油机械,2003,31(6):3-5.BO Q W,ZHANG Q,ZHAO D W,et al. Experimental research of split ratio determination of downhole gravitational oil-water separation[J]. China Petroleum Machinery,2003,31(6):3-5.
[8] MATTEWS C M. Application of downhole oil/water separation systems in the Alliance Field[R]. SPE 35817,1996.
[9] SHI S Y,XU J Y,SUN H Q,et al. Experimental study of a vane-type pipe separator for oil-water separation[J]. Chemical Engineering Research&Design Transactions of the Inst,2012,90(10):1652-1659.
[10]史仕荧.导流片型管道式分离器油水分离性能研究[D].北京:中国科学院大学,2013.SHI S Y. Study on oil-water separation performance of deflector tube separator[D]. Beijing:University of Chinese Academy of Sciences,2013.