通过算例，分析了造斜点井深、造斜率以及套管尺寸对井口水平力的影响规律。
The influencing regular pattern of depths of deflection point, line slope and casing dimension on horizontal force of directional wellhead is analyzed by case calculation.
实际测井资料显示，尽管套管尺寸不一，但固井质量是影响套管井声波测井的主要因素。
Real logging data indicate that cement job quality is the major influential factor of sonic logging in cased holes regardless of the casing sizes.
球塞气举方式采用U型双管柱易受套管尺寸限制，且施工作业较为复杂，其应用受到较大限制。
Pig lift method with U-shape double strings is easy to be limited by size of casing and very complicated in construction operation process. Thus, the large restrictions exist in the field application.
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