发明公开
- 专利标题： SLIM TYPE OIL WELL PIPE FITTING
- 专利标题（中）： VERBINDUNGFÜRDURCHMESSERREDUZIERTEÖLFELDROHRE
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申请号： EP01917578.5申请日： 2001-03-29
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公开(公告)号： EP1271037A1公开(公告)日： 2003-01-02
- 发明人: SUMITANI, Katsutoshi , MAEDA, Jun , NAGASAKU, Shigeo
- 申请人： SUMITOMO METAL INDUSTRIES, LTD. , VALLOUREC MANNESMANN OIL & GAS FRANCE
- 申请人地址： 5-33, Kitahama 4-chome, Chuo-ku Osaka-shi, Osaka 541-0041 JP
- 专利权人： SUMITOMO METAL INDUSTRIES, LTD.,VALLOUREC MANNESMANN OIL & GAS FRANCE
- 当前专利权人： SUMITOMO METAL INDUSTRIES, LTD.,VALLOUREC MANNESMANN OIL & GAS FRANCE
- 当前专利权人地址： 5-33, Kitahama 4-chome, Chuo-ku Osaka-shi, Osaka 541-0041 JP
- 代理机构： Leson, Thomas Johannes Alois, Dipl.-Ing.
- 优先权： JP2000094020 20000330
- 国际公布： WO01075347 20011011
- 主分类号： F16L15/06
- IPC分类号： F16L15/06
摘要：
A threaded joint for oil well pipes is provided which can guarantee a joint efficiency sufficient for practical use in deep wells, which has a decreased joint outer diameter, and which has an improved bending resistance, compression resistance, and over-torque resistance which are sufficient for use by the side track technique.
It is an integral threaded joint for oil well pipes in which it has a joint efficiency of at least 70%, the outer diameter of the joint is larger than and at most 1.08 times the outer diameter of the oil well pipe bodies, and the threaded portions have a cross section of a trapezoidal shape with a load flank angle (α) of the threads in the range of 0 to -20 degrees and a stabbing flank angle (θ) thereof in the range of 35 to 50 degrees.
It is an integral threaded joint for oil well pipes in which it has a joint efficiency of at least 70%, the outer diameter of the joint is larger than and at most 1.08 times the outer diameter of the oil well pipe bodies, and the threaded portions have a cross section of a trapezoidal shape with a load flank angle (α) of the threads in the range of 0 to -20 degrees and a stabbing flank angle (θ) thereof in the range of 35 to 50 degrees.
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