高压注水管柱变形及强度校核研究

Research on pipe string distortion and hardness check in water injection well with high pressure

对于特低渗透油藏,常规压力注水已不能满足生产要求,必须采取高压注水,但是高压注水会使管柱发生较大变形,而常规的强度校核方法也受到公式适用范围的限制。以油田常用的高压注水管柱为例,详细阐述了高压注水条件下管柱变形及强度校核的计算方法。

The conventionality pressure of water injection can not satisfy production requirement in low permeability reservoir.We must increase the pressure,but it will make pipe string distort greatly if we compute the biggest stress from pipe string in ordinary way.It is not correct.In this paper,the author will take common high pressure pipe string as an example to illustrate the accurate method for computing stress and distortion quantity.