连续油管管内摩擦压降计算模型与敏感性分析

陈勋; 闫铁; 毕雪亮; 栾石柱; 李洋; 杜婕妤

doi:10.13639/j.odpt.2014.05.004

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连续油管管内摩擦压降计算模型与敏感性分析

陈勋, 闫铁, 毕雪亮, 栾石柱, 李洋, 杜婕妤

文章导航 > 石油钻采工艺 > 2014 > 36(5): 13-17

陈勋, 闫铁, 毕雪亮, 栾石柱, 李洋, 杜婕妤. 连续油管管内摩擦压降计算模型与敏感性分析[J]. 石油钻采工艺, 2014, 36(5): 13-17. doi: 10.13639/j.odpt.2014.05.004

引用本文:

陈勋, 闫铁, 毕雪亮, 栾石柱, 李洋, 杜婕妤. 连续油管管内摩擦压降计算模型与敏感性分析[J]. 石油钻采工艺, 2014, 36(5): 13-17. doi: 10.13639/j.odpt.2014.05.004

CHEN Xun, YAN Tie, BI Xueliang, LUAN Shizhu, LI Yang, DU Jieyu. Calculation model for internal frictional pressure drop in coiled tubing and analysis of sensitivity[J]. Oil Drilling & Production Technology, 2014, 36(5): 13-17. doi: 10.13639/j.odpt.2014.05.004

Citation:

CHEN Xun, YAN Tie, BI Xueliang, LUAN Shizhu, LI Yang, DU Jieyu. Calculation model for internal frictional pressure drop in coiled tubing and analysis of sensitivity[J]. Oil Drilling & Production Technology, 2014, 36(5): 13-17. doi: 10.13639/j.odpt.2014.05.004

连续油管管内摩擦压降计算模型与敏感性分析

doi: 10.13639/j.odpt.2014.05.004

1.
东北石油大学石油工程学院，黑龙江大庆　163318
2.
大庆油田采油五厂，黑龙江大庆　163453
3.
华北油田公司采油工程研究院，河北任丘　062552

详细信息

中图分类号: TE22

Calculation model for internal frictional pressure drop in coiled tubing and analysis of sensitivity

1.
Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China
2.
No.5 Oil Production Plant, Daqing Oilfield Limited Company, Daqing 163453, China
3.
Petroleum Production Engineering Research Institute, Huabei Oilfield Company, Renqiu 062552, China

摘要: 连续油管压裂作业过程中，压裂液除了在连续油管井下直管段流动，同时也会流入缠绕在滚筒上的那部分连续管，螺旋段的流动非常复杂，现有模型的计算结果与工程实际有一定的差距，基于流体力学基本原理，结合直管段摩擦因数公式和螺旋段几何特征，给出了连续油管螺旋段摩擦因数的一般关系式，最后经理论推导建立了完整的连续油管压裂作业管内压降的计算模型。分析了连续油管管径、滚筒直径、排量、黏度和流性指数等参数对管内压降的影响规律。结果表明：该模型的计算结果精度较高；相同条件下，螺旋段的压降总是大于直管段的压降；连续油管管径对压降的影响最大，管径增大近1 倍，压降却减小了13 倍，而滚筒直径对压降的影响最小，选择不同的滚筒直径，压降几乎未发生变化。
- 连续油管 /
- 摩擦压降 /
- 计算模型 /
- 螺旋段 /
- 敏感性分析
Abstract: Unlike the conventional fracturing operation, the fracturing fluid not only flows in straight section of downhole coiled tubing, but also flows into the part of coiled tubing which is wound on the reel. The flow in spiral section is very complex, and the calculation results from existing model is somewhat different from the actual engineering practice, so a general relation was given to the friction factor in the spiral section of the coiled tubing based on principle of flow mechanics and in combination with friction factor equation of the straight section and the geometric characteristics of the spiral section; finally a complete calculation model for internal pressure drop during fracturing operation in coiled tubing was built with theoretical derivation. Analysis was conducted of the effect law of parameters like coiled tubing diameter, drum diameter, displacement, viscosity and flow index on internal pressure drop. The result shows that the accuracy of the calculations by this model is high; under the same conditions, the pressure drop in spiral section is always greater than that in straight section; the diameter of coiled tubing poses the greatest impact on pressure drop; when the diameter is increased by 1 time, the pressure drop reduces by 13 times, while the drum’s diameter has the smallest impact on pressure drop, so no matter what size of the drum is, the pressure drop almost remains the same.
- coiled tubing /
- frictional pressure drop /
- calculation model /
- spiral section /
- sensitivity analysis

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连续油管管内摩擦压降计算模型与敏感性分析

doi: 10.13639/j.odpt.2014.05.004

1. 东北石油大学石油工程学院，黑龙江大庆　163318

2. 大庆油田采油五厂，黑龙江大庆　163453

3. 华北油田公司采油工程研究院，河北任丘　062552

收稿日期: 2019-05-21
修回日期: 2019-05-21
刊出日期: 2014-11-03

中图分类号: TE22

关键词:

螺旋段 /

摘要: 连续油管压裂作业过程中，压裂液除了在连续油管井下直管段流动，同时也会流入缠绕在滚筒上的那部分连续管，螺旋段的流动非常复杂，现有模型的计算结果与工程实际有一定的差距，基于流体力学基本原理，结合直管段摩擦因数公式和螺旋段几何特征，给出了连续油管螺旋段摩擦因数的一般关系式，最后经理论推导建立了完整的连续油管压裂作业管内压降的计算模型。分析了连续油管管径、滚筒直径、排量、黏度和流性指数等参数对管内压降的影响规律。结果表明：该模型的计算结果精度较高；相同条件下，螺旋段的压降总是大于直管段的压降；连续油管管径对压降的影响最大，管径增大近1 倍，压降却减小了13 倍，而滚筒直径对压降的影响最小，选择不同的滚筒直径，压降几乎未发生变化。

English Abstract

Calculation model for internal frictional pressure drop in coiled tubing and analysis of sensitivity

1. Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China

2. No.5 Oil Production Plant, Daqing Oilfield Limited Company, Daqing 163453, China

3. Petroleum Production Engineering Research Institute, Huabei Oilfield Company, Renqiu 062552, China

Received Date: 2019-05-21
Rev Recd Date: 2019-05-21
Publish Date: 2014-11-03

Keywords:

Abstract: Unlike the conventional fracturing operation, the fracturing fluid not only flows in straight section of downhole coiled tubing, but also flows into the part of coiled tubing which is wound on the reel. The flow in spiral section is very complex, and the calculation results from existing model is somewhat different from the actual engineering practice, so a general relation was given to the friction factor in the spiral section of the coiled tubing based on principle of flow mechanics and in combination with friction factor equation of the straight section and the geometric characteristics of the spiral section; finally a complete calculation model for internal pressure drop during fracturing operation in coiled tubing was built with theoretical derivation. Analysis was conducted of the effect law of parameters like coiled tubing diameter, drum diameter, displacement, viscosity and flow index on internal pressure drop. The result shows that the accuracy of the calculations by this model is high; under the same conditions, the pressure drop in spiral section is always greater than that in straight section; the diameter of coiled tubing poses the greatest impact on pressure drop; when the diameter is increased by 1 time, the pressure drop reduces by 13 times, while the drum’s diameter has the smallest impact on pressure drop, so no matter what size of the drum is, the pressure drop almost remains the same.

陈勋, 闫铁, 毕雪亮, 栾石柱, 李洋, 杜婕妤. 连续油管管内摩擦压降计算模型与敏感性分析[J]. 石油钻采工艺, 2014, 36(5): 13-17. doi: 10.13639/j.odpt.2014.05.004

引用本文:

陈勋, 闫铁, 毕雪亮, 栾石柱, 李洋, 杜婕妤. 连续油管管内摩擦压降计算模型与敏感性分析[J]. 石油钻采工艺, 2014, 36(5): 13-17. doi: 10.13639/j.odpt.2014.05.004

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连续油管管内摩擦压降计算模型与敏感性分析

doi: 10.13639/j.odpt.2014.05.004

Calculation model for internal frictional pressure drop in coiled tubing and analysis of sensitivity

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出版历程

连续油管管内摩擦压降计算模型与敏感性分析

doi: 10.13639/j.odpt.2014.05.004

1. 东北石油大学石油工程学院，黑龙江大庆 163318 2. 大庆油田采油五厂，黑龙江大庆 163453 3. 华北油田公司采油工程研究院，河北任丘 062552

English Abstract

Calculation model for internal frictional pressure drop in coiled tubing and analysis of sensitivity

1. Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China 2. No.5 Oil Production Plant, Daqing Oilfield Limited Company, Daqing 163453, China 3. Petroleum Production Engineering Research Institute, Huabei Oilfield Company, Renqiu 062552, China

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目录

1. 东北石油大学石油工程学院，黑龙江大庆　163318

2. 大庆油田采油五厂，黑龙江大庆　163453

3. 华北油田公司采油工程研究院，河北任丘　062552

1. Petroleum Engineering College, Northeast Petroleum University, Daqing 163318, China

2. No.5 Oil Production Plant, Daqing Oilfield Limited Company, Daqing 163453, China

3. Petroleum Production Engineering Research Institute, Huabei Oilfield Company, Renqiu 062552, China