Calculation shows that the casing collapse resistance decreases greatly under nonuniform loads.
计算表明，在非均布外挤压力作用下，套管抗挤毁强度大大降低。
Practice shows that both ovality and eccentricity affect the casing collapse resistance obviously.
实践证明，不圆度和壁厚不均度对套管抗挤强度的影响是相当可观的。
Distribution of Triassic salt bed is very wide in Sichuan Area and the condition of salt rock creep resulting in casing collapse is existing.
四川地区三迭系盐岩层分布广泛，盐岩层蠕变挤毁套管的客观条件是存在的。
Two practical problems in the petroleum exploitation about casing collapse and sand production are taken as examples to make some explication.
就该理论在石油开发领域注水引致的套管损坏及产层出砂问题的具体应用进行了简单的讨论。
Then the improved model is used to calculate the final casing collapse strength. This method combines FEA and strain test together and thus can get more …
该方法将有限元计算与应变检测结合起来，大大提高了有限元计算的精度，对预测套管的挤毁压力、指导高抗挤套管的开发具有一定的参考价值。
In this paper, the influence of casing eccentric wear with different diameter on casing collapse resistance capacity was researched by finite element software.
文章主要运用有限元软件，研究了不同钻杆直径造成的套管偏磨对套管抗挤毁能力的影响。
Its result is coincident with that of simulating test of casing collapse very well. This 3-d physical model considers factors of formation, casing program and corrosion etc.
该空间力学模型考虑了地层因素、井身结构因素、腐蚀因素等，其计算结果与套管抗挤毁的模拟试验结果非常吻合。
Using cementing equipments, the dual casing cementing technology in local intervals has been achieved to meet the requirements of the improvements of casing collapse resistance.
利用注水泥装置实现局部井段双层组合套管注水泥工艺，达到增加套管抗外挤强度的效果。
The short liner cementing technique can successfully solve some difficult technical problems, such as casing collapse, loss circulation during ultra deep exploratory well drilling operations.
超深探井在钻进过程中出现套管挤毁、井漏而常规封堵无效等复杂问题，影响了下一步正常钻进，短回接尾管固井技术能很好地解决该技术难题。
The short liner cementing technique can successfully solve some difficult technical problems, such as casing collapse, loss circulation during ultra deep exploratory well drilling operations.
超深探井在钻进过程中出现套管挤毁、井漏而常规封堵无效等复杂问题，影响了下一步正常钻进，短回接尾管固井技术能很好地解决该技术难题。
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