西南石油大学学报(自然科学版)

• 博导论评 • 上一篇    

水基泡沫降低稠油流动阻力的新思路

敬加强1,代科敏1,李业1,明亮1,汤皓2   

  1. 1. 西南石油大学石油工程学院,四川成都610500
    2. 中国石油海洋工程有限公司海工事业部,山东青岛266555
  • 出版日期:2013-06-01 发布日期:2013-06-01
  • 作者简介:敬加强,1964 年生,男,汉族,四川 蓬溪人,教授,博士生导师,主要 从事油气集输工艺及理论、复杂多 相流安全保障技术、非常规原油流 动改进机理及应用等领域的研究。 E-mail:jjq@swpu.edu.cn  代科敏,1987 年生,男,汉族,四 川南充人,硕士研究生,主要从 事多相流体流动性及减阻研究。 E-mail:dkm_swpu@126.com  李业,1989 年生,女,汉族,四川 自贡人,硕士研究生,主要从事泡 沫油形成机理及阻力特性研究。 E-mail:alice.123@live.cn  明亮,1983 年生,男,汉族,四川 南充人,硕士研究生,主要从事 超稠油掺稀输送关键技术研究。 E-mail:mingliang1218@gmail.com  汤皓,1985 年生,男,蒙古族,辽 宁朝阳人,工程师,现任职于中石 油海洋工程有限公司海工事业部。 E-mail:anghao.cpoe@cnpc.com.cn
  • 基金资助:

    国家自然科学基金(51074136);高等学校博士点基金(20115121110004)。

New Ideas of Drag Reduction for Heavy Oil Flow Using Aqueous Foam

Jing Jiaqiang1, Dai Kemin1, Li Ye1, Ming Liang1, Tang Hao2   

  1. 1. School of Petroleum Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. CNPC Offshore Engineering Co. Ltd Marine Division,Qingdao,Shandong 266555,China
  • Online:2013-06-01 Published:2013-06-01

摘要:

根据“泡沫油”产量比普通稠油产量高数倍及微气泡可降低湍流边界层摩阻的事实,提出采用水基泡沫来实
现稠油流动边界层隔离与润滑减阻的新思路。基于国内外相关研究成果的系统分析,探讨水环、微气泡和水基泡沫减
阻的有效性,剖析水环输送存在的主要问题,理论分析利用水基泡沫环在水平管与垂直管中实现稠油流动减阻的可行
性。结果表明,泡沫环减阻思路在理论上是可行的,且井筒及深水立管之类的垂直管更容易实施,其深入研究可望解
决水平管内稠油–水中心环状结构的油流“偏心”难题;筛选合适的泡沫剂体系可有效缓解油水乳化与油在管壁上黏
附,改善管壁的润滑性,提高中心环状流的稳定性;然而,泡沫环减阻思路的实际应用尚需深入研究其相关科学问题。

关键词: 稠油流动, 减阻, 水基泡沫, 油&ndash, 泡沫中心流, 边界层

Abstract:

According to the fact that the productivity of foamy oil is several times higher than that of normal crude oil,and
microbubbles can reduce the frictional drag of the turbulent boundary layer,a new solution is proposed for drag reduction of
heavy oil flow through boundary layer isolation and lubrication with aqueous foam,which is called as oil-foam core annular
flow(OFCAF). Based on the systemic analysis of relevant studies at home and abroad,the drag reduction effectiveness of
the oil flow through annular water,microbubble and aqueous foam is discussed;the major problems of the oil-water core
annular flow are analyzed,and the feasibility of the OFCAF in horizontal and vertical pipes is also analyzed theoretically. The
results show that drag reduction of heavy oil flow by OFCAF could be feasible in theory,and the implementation of OFCAF
in vertical pipes such as wellbore or deep-water riser pipe is easier. The eccentric problem of the oil-water core annular flow
in a horizontal pipe will be solved in the next step. Furthermore,an adaptive foam system should be screened according to the
stability requirement of the OFCAF,which could relieve the oil-water emulsification and oil adhesion on the pipe wall and thus
improve the lubricity of pipe surface and increase the stability of the OFCAF. However,some related problems still need to be
investigated intensively before the actual application of drag reduction by OFCAF.