cement thickness
水泥环厚度名义值 nominal cement thickness
·2,447,543篇论文数据，部分数据来源于NoteExpress
扩孔加大了环空间隙，固井后水泥环厚度和强度增大，可以延长侧钻小井眼油井寿命。
The annular clearance was also enlarged, thus the thickness and strength of the cement sheath was increased, and the oil well life of the sidetracked slim hole was also prolonged.
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