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《ACTA PETROLEI SINICA》 1997-01
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RESEARCH ON REASONABLE FREE SEGMENT LENGTH OF DEEP OIL WELL CASING STRING

Cui Xiaobing Zhang Hong Li Zhihou An Wenhua Song Zhi (Petroleum University,Beijing ) (Tarim Petroleum Exploration & Development Bureau)  
The free segment length of deep oil well casing string gives an important influence to the quality and cost of the oil well cementing operation.Up to now in technical journals the reasonable free segment length of casing string has not been researched.Based on the theory of casing string stability and strength,this paper presents an analysis of this problem. Formula for designing the reasonable free segment length of casing string and for giving tensile force of well head during well completion job have been derived with consideration of safety and economy.
【CateGory Index】: TE92.2
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