论文详情
压裂管柱轴向变形的理论计算及应用
石油钻采工艺
2016年 38卷 第4期
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Title
Theoretical calculation and application of axial deformation in fracturing pipestring
Authors
LI Qi
LI Xuyang
WANG Zaixing
ZHANG Yongzhong
单位
西安石油大学石油工程学院
长庆油田公司第一采油厂
Organization
College of Petroleum Engineering, Xi’an Shiyou University, Xi’an, Shaanxi 710065, China
No.1 Oil Production Plant of Changqing Oilfield Company, Yan’an, Shaanxi 716000, China
摘要
综合分析压裂作业过程中影响管柱轴向变形的因素，从实际作业工况出发，考虑各因素的动态变化，结合弹塑性力学，利用划分微元后叠加的方法，建立了压裂管柱轴向变形的理论计算模型，并以陈平15-2 井水力喷射分段压裂为例进行了实例计算，根据计算结果可准确地进行井下作业定位、校核作业工具强度以及确定伸缩补偿距，对现场生产作业具有重要的指导意义。
Abstract
Factors affecting axial deformation of pipestring during fracturing have been analyzed. In light of dynamic changes of various factors in field operations, a model for theoretical calculation of axial deformation in fracturing pipestring has been built by using elastic and plastic mechanics and stacking of micro-elements. The newly-developed model was used in calculating the deformation in hydraulic staged fracturing of Well Chenping 15-2. The calculation results show the model can accurately locate downhole operation positions, calibrate strength of various downhole assemblies, and identify required telescopic compensation distance. The relevant research results may provide necessary guidelines for on-site operations.
关键词：
管柱受力;
轴向变形;
压裂;
作业定位;
Keywords:
stress on pipestring;
axial deformation;
fracturing;
operation positioning;
DOI
10.13639/j.odpt.2016.04.012
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