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。
Factors affecting axial deformation of pipestring during fracturing have been analyzed. In light of dynamic changes of various factors in feld 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 po-sitions, calibrate strength of various downhole assemblies, and identify required telescopic compensation distance. The relevant research esults may provide necessary guidelines for on-site operations.
出处
《石油钻采工艺》
CAS
CSCD
北大核心
2016年第4期467-472,486,共7页
Oil Drilling & Production Technology
基金
国家自然科学基金项目"基于多源信息和智能计算的钻井异常自适应预警方法研究"(编号:51574194)资助
陕西省科技工业攻关项目"非常规油气钻井随钻风险动态预警技术研究"(编号:2014K05-02)资助
陕西省教育厅专项科研计划项目"页岩储层地质力学模型的建立方法及应用研究"(编号:16JK1613)
关键词
管柱受力
轴向变形
压裂
作业定位
stress on pipestring
axial deformation
fracturing
operation positioning
