保证特厚壁套管顺利下入和提高盐膏层封固质量的钻后扩眼技术。
Guarantee special thick wall casing to put down successfully and improve reaming after drilling technology to seal quality of salt layer.
针对这一问题，开发了一种特殊套管——TP130 TT高抗挤厚壁套管。
To solve this problem, a special casing - TP130TT high collapsing strength heavy casing has been developed.
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。
Practice shows that both ovality and eccentricity affect the casing collapse resistance obviously.
研究表明在石油套管的生产过程中产生的壁厚误差会在一定程度上影响套管的强度。
Researches show that the pipe wall thickness deflection occurred during the pipe manufacturing could influence the intensity of the casings to some extent.
采用有限元法分析了壁厚不均缺陷对膨胀套管性能的影响。
The influence of wall thickness nonuniformity on the property of the expandable casing is analyzed by the finite element analysis.
采用有限元法，计算和分析了壁厚不均与椭圆套管在单向均匀和单向椭圆分布外挤力作用下的强度问题。
With finite element method, the collapse strength of casing with ovality and eccentricity under unidirectional uniform and ellipse distributive force was calculated and analyzed.
计算结果表明，套管所能承受最大分布力与其壁厚不均度、椭圆度、分布力的类型和方向等因素有关。
The results of calculation show that the maximum value of distributive force the casing can resist depends on eccentricity, ovality, and the mode of distributive force as well as its direction.
金属导管严禁对口熔焊连接，镀锌或壁厚小于等于2毫米钢导管不得套管连接；
Butt fusion connection is banned for metallic conduit, and bush connection is banned for galvanized steel conduit, or steel conduit with wall thickness of 2 mm and below;
金属导管严禁对口熔焊连接，镀锌或壁厚小于等于2毫米钢导管不得套管连接；
Butt fusion connection is banned for metallic conduit, and bush connection is banned for galvanized steel conduit, or steel conduit with wall thickness of 2 mm and below;
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