Experiment and calculation of critical sand-carrying velocity for high-viscosity fluid in vertical wellbore

被引：0
|
作者：
Jiao Y. [1 ]
Li P. [2 ]
Wang L. [3 ]
Fan Y. [2 ]
机构：
[1] Qinhuangdao Branch, Northeast Petroleum University, Qinhuangdao, 066004, Hebei
[2] CNPC BohaiDrilling Engineering Company Limited, Tianjin
[3] School of Petroleum Engineering, Yangtze University, Wuhan, 430100, Hubei
来源：
Jiao, Yanhong (842092010@qq.com) | 2018年 / Science Press卷 / 39期
关键词：
Critical velocity; High-viscosity fluid; Sand carrying; Shape correction coefficient; Vertical wellbore;
D O I：
10.7623/syxb201805012
中图分类号：
学科分类号：
摘要：
Productive practice proves that the recovery of heavy oil using moderate sand production technology can effectively increase oil well productivity. The critical sand-carrying velocity for high-viscosity fluid in vertical wellbore is one of the key factors regarding the moderate sand production design for heavy oil. Referring to research documents and considering the influences of some factors such as sand particle shape, concentration and container wall interference, an empirical equation is proposed for the interference settlement velocity of sand-particle container wall, which is applicable to calculate the sedimentation velocity of sand particles in high-viscosity fluid. By the use of vertical-wellbore sand-carrying simulation experiment device, the sand particle shape correction coefficient is obtained by static settlement experiment, and the actual sand-carrying critical velocity is acquired by critical sand-carrying velocity experiment for high-viscosity fluid. Further, by fitting the interference settlement velocity of sand-particle container wall and the critical sand-carrying velocity, a formula is acquired for calculating the critical velocity of high-viscosity fluid carrying sand particles with different sizes. The results show that the interference velocity of sand-particle container wall has a bacically liner relationship with the critical sand-carrying velocity. The greater the viscosity is, the closer to critical sand-carrying velocity value the interference settlement velocity of sand-particle container wall will be. © 2018, Editorial Office of ACTA PETROLEI SINICA. All right reserved.
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页码：604 / 608
页数：4
相关论文
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