封隔器间距对压裂管柱下入摩阻力的影响
Influence of Spacing Packer on the Friction Force of Fracturing String
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- 引用格式:
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艾,池,米洁翰,付,虹,张,军.封隔器间距对压裂管柱下入摩阻力的影响[J].天然气与石油,2016,34(5):0.doi:
Ai Chi, Mi Jiehan, Fu Hong, Zhang Jun.Influence of Spacing Packer on the Friction Force of Fracturing String[J].Natural Gas and Oil,2016,34(5):0.doi:
- DOI:
- 作者:
- 艾 池 米洁翰 付 虹 张 军
Ai Chi, Mi Jiehan, Fu Hong, Zhang Jun
- 作者单位:
- 东北石油大学提高油气采收率教育部重点实验室
Key Laboratory of Enhanced Oil Recovery, Northeast Petroleum University
- 关键词:
- 多级压裂；封隔器间距；井斜角；摩阻力
Multistage fracturing; Packer spacing; Deviation angle; Friction force
- 摘要:
- 压裂管柱下入到井斜角较大井段时,管柱所受摩阻力会产生极大值,摩阻力远大于管柱自重,管柱无法下入到设计的井段。为保证多封隔器压裂管柱顺利下入到目的层位,应分析压裂管柱下入过程遇阻的影响因素。应用管柱力学理论分析带封隔器管柱下入时的摩阻力,建立了考虑多封隔器间距对压裂管柱刚度影响的摩阻力计算模型,对压裂管柱所带封隔器数目及封隔器间距离进行优化,降低压裂管柱所受摩阻力,确保带封隔器管柱顺利下入到目的层位。
To ensure the successful run-down of the fracturing string with multiple packers, the factors affecting the friction during the run-down of fracturing string should be analyzed in order to provide a new method for the successful run-down of the string. The friction imposed on the string reaches a local maximum when the string runs into the section of the well with greater deviation angle. Consequently, the friction far exceeds the weight of the string and may fail to run the string down. In order to analyze the friction imposed on string with multiple packers, we have established a calculation model for friction analysis taking the factors affecting the rigidity of the string with multiple packers into consideration, based on the mechanical theory of string. We have optimized the number of packers the string should carry and the space between them to ensure the successful run-down of the fracturing string.
