According to strain coordination condition, the force and deformation state formulas of casing, cement loop and stratum are derived.
根据应变协调条件，推导出了套管、水泥环及地层受力变形状态的计算公式。
Casing, cement and formation plane strain mechanical model are established, considering casing with initial ovality.
针对套管的不同初始椭圆度建立了套管、水泥环、地层平面应变力学模型。
The influences of multi-openings with different shapes on a casing-cement cylindrical shell are studied in this paper, combined with practical engineering of oil Wells.
结合油井试采工程实际问题，研究了圆形和椭圆形两种形状的多个射孔对套管-水泥环结构强度的影响。
Casing-cement sheath and formation formed a vertical hydraulic isolation system; hydraulic isolation ability of the system formed by cementing mainly depends on defection and strength of the system.
固井水泥凝固后形成了一个纵向上的水力封隔系统，影响这个系统水力封隔能力的因素包括系统的缺陷和系统的强度。
Casing-cement sheath and formation formed a vertical hydraulic isolation system; hydraulic isolation ability of the system formed by cementing mainly depends on defection and strength of the system.
固井水泥凝固后形成了一个纵向上的水力封隔系统，影响这个系统水力封隔能力的因素包括系统的缺陷和系统的强度。
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