发明名称 |
SLIM TYPE OIL WELL PIPE FITTING |
摘要 |
A threaded oil well pipe fitting of integral system capable of assuring a joint efficiency to withstand a practical use as an oil well pipe fitting fo r deep well, reducing the outside diameter thereof, and increasing a bending resistance capability, compression resistance capability, and over-torque resistance capability necessary when a side track system is adopted, wherein a fitting efficiency is 70% or higher, a fitting outside diameter is larger th an and 1.08 times or less the outside diameter of an oil well pipe main body, a nd a threaded part cross section is formed in a trapezoidal shape of 0 to -20 degrees in thread load surface flank angle (.alpha.) and 35 to 50 degrees in thread insert surface flank angle (.theta.).
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申请公布号 |
CA2404885(A1) |
申请公布日期 |
2002.09.25 |
申请号 |
CA20012404885 |
申请日期 |
2001.03.29 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD.;VALLOUREC MANNESMANN OIL & GAS FRANCE |
发明人 |
SUMITANI, KATSUTOSHI;NAGASAKU, SHIGEO;MAEDA, JUN |
分类号 |
E21B17/042;F16L15/06;(IPC1-7):F16L15/06 |
主分类号 |
E21B17/042 |
代理机构 |
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