三元复合驱集油管道淤积规律试验研究
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摘要
三元复合驱采出液蜡质含量高、黏度大、乳化严重、机械杂质及黏土颗粒含量多,在集油管道输送过程中,随着温度的降低,这些物质不断析出,从而给地面集油管道带来严重的淤积问题。通过室内试验研究大庆油田三元复合驱典型区块集油管道淤积物组成及淤积规律,明确了淤积物为黑色黏稠状的混合物,主要由蜡组成;集油管道淤积主要受所含聚合物浓度、集油温度、含水率、流速等因素的影响,且淤积速率随着含聚浓度的增大而增大;随着集油温度、含水率、流速的增大而减小。该研究结果为制定三元复合驱集油管道内形成淤积物的预防和控制措施提供了理论基础,对确保集油管道的安全生产运行具有重要意义。
The characteristics of produced liquid by ASP flooding process include high wax content,high viscosity,serious emulsification and great amount of mechanical admixtures and clay particles.With temperature decreasing during the transportation process in oil gathering pipeline,these materials may be continuously precipitated,thus causing serious deposition problem to surface oil gathering system.In this paper,the composition and deposition regulation of precipitated materials in oil gathering pipelines of Daqing oilfield are studied by lab experiments.The results show that the precipitated material is black and viscous mixture mainly composed of wax.And the influencing factors are polymer concentration,oil gathering temperature,water cut and flow velocity,etc.The precipitating velocity increases with the increasing of polymer concentration and decreases with the increasing of oil gathering temperature,water cut and flow velocity.This study provides the theoretical foundations to take preventive and control measures for forming precipitated materials in oil gathering pipeline by ASP flooding process.It is of important significance for insuring the safe production and operation in oil gathering pipeline.
The characteristics of produced liquid by ASP flooding process include high wax content,high viscosity,serious emulsification and great amount of mechanical admixtures and clay particles.With temperature decreasing during the transportation process in oil gathering pipeline,these materials may be continuously precipitated,thus causing serious deposition problem to surface oil gathering system.In this paper,the composition and deposition regulation of precipitated materials in oil gathering pipelines of Daqing oilfield are studied by lab experiments.The results show that the precipitated material is black and viscous mixture mainly composed of wax.And the influencing factors are polymer concentration,oil gathering temperature,water cut and flow velocity,etc.The precipitating velocity increases with the increasing of polymer concentration and decreases with the increasing of oil gathering temperature,water cut and flow velocity.This study provides the theoretical foundations to take preventive and control measures for forming precipitated materials in oil gathering pipeline by ASP flooding process.It is of important significance for insuring the safe production and operation in oil gathering pipeline.
引文
[1]卢志刚.三元复合驱集输系统抗沉积剂的开发研究[D].大庆:大庆石油学院,2008:1-10.
[2]王玉普,程杰成.三元复合驱过程中的结垢特点和机采方式适应性[J].大庆石油学院学报,2003,27(2):20-22.
[3]张秋实,陈微.大庆油田三元复合驱采出井结垢性质和规律[J].新疆石油地质,2010,31(1):78-80.
[4]闫雪,王宝辉,隋欣,等.弱碱三元复合驱硅质垢形成影响因素与机理研究[J].南京师范大学学报(工程技术版),2009,29(3):42-46.
[5]赵长久,赵群,么世椿.弱碱三元复合驱与强碱三元复合驱的对比[J].新疆石油地质,2006,27(6):728-730.
[6]蔡均猛,张国忠.用差压新方法确定模型环道沉积物沉积厚度[J].石油大学学报,2003,27(6):68-75.
[2]王玉普,程杰成.三元复合驱过程中的结垢特点和机采方式适应性[J].大庆石油学院学报,2003,27(2):20-22.
[3]张秋实,陈微.大庆油田三元复合驱采出井结垢性质和规律[J].新疆石油地质,2010,31(1):78-80.
[4]闫雪,王宝辉,隋欣,等.弱碱三元复合驱硅质垢形成影响因素与机理研究[J].南京师范大学学报(工程技术版),2009,29(3):42-46.
[5]赵长久,赵群,么世椿.弱碱三元复合驱与强碱三元复合驱的对比[J].新疆石油地质,2006,27(6):728-730.
[6]蔡均猛,张国忠.用差压新方法确定模型环道沉积物沉积厚度[J].石油大学学报,2003,27(6):68-75.