基于应变的热采井管柱评价方法

Strain-based Evaluation Method of Thermal Recovery Well String

针对稠油热采井轮回注汽工况过程中引起管柱产生额外温度荷载的现象,依据套管柱结构与强度设计理论,考虑轮回注汽温度的影响,完成稠油热采井的强度评价;采用热采井套管柱应变设计方法,计算套管柱的应变,应用应变设计准则,完成稠油热采井的应变评价。实例计算表明,该热采井工况适合基于应变的热采井管柱评价方法。

Aiming at the phenomenon that the pipe string generates additional temperature loads during the cycle steam injection conditions of heavy oil thermal recovery wells,based on the casing string structure and strength design theory,considering the effect of cycle steam injection temperature,the strength evaluation of the heavy oil thermal recovery well is completed;Adopt the casing string strain design method of thermal recovery well,calculate the strain of the casing string,apply the strain design criterion,complete the strain evaluation of the thermal recovery well of heavy oil.The example calculation shows that the thermal recovery well working condition is suitable for the strain-based thermal recovery well string evaluation method.