石油矿场机械
石油礦場機械
석유광장궤계
OIL FIELD EQUIPMENT
2009年
7期
47-50
,共4页
钻铤%螺纹连接%有限元分析
鑽鋌%螺紋連接%有限元分析
찬정%라문련접%유한원분석
drill collar%thread connection%finite element analysis
研制的高抗扭强度钻铤螺纹与API标准钻铤螺纹相比,只是在外螺纹小端增加了一段光滑的圆柱面.该结构可在达到上扣扭矩时,使螺纹内、外台肩同时顶紧,形成2道密封面,不仅增加了螺纹的受力截面积,而且提高了钻铤螺纹连接强度和抗扭强度,大大降低了密封面发生刺漏的几率.有限元分析和现场使用表明,使用高抗扭强度钻铤螺纹是延长钻铤寿命、减少井下事故的一种有效措施.
研製的高抗扭彊度鑽鋌螺紋與API標準鑽鋌螺紋相比,隻是在外螺紋小耑增加瞭一段光滑的圓柱麵.該結構可在達到上釦扭矩時,使螺紋內、外檯肩同時頂緊,形成2道密封麵,不僅增加瞭螺紋的受力截麵積,而且提高瞭鑽鋌螺紋連接彊度和抗扭彊度,大大降低瞭密封麵髮生刺漏的幾率.有限元分析和現場使用錶明,使用高抗扭彊度鑽鋌螺紋是延長鑽鋌壽命、減少井下事故的一種有效措施.
연제적고항뉴강도찬정라문여API표준찬정라문상비,지시재외라문소단증가료일단광활적원주면.해결구가재체도상구뉴구시,사라문내、외태견동시정긴,형성2도밀봉면,불부증가료라문적수력절면적,이차제고료찬정라문련접강도화항뉴강도,대대강저료밀봉면발생자루적궤솔.유한원분석화현장사용표명,사용고항뉴강도찬정라문시연장찬정수명、감소정하사고적일충유효조시.
Based on the analysis of API standard drill collar connections, the high torque drill col-lar connections were developed. Compared with the API standard drill collar connections, one piece of smooth cylinder is machined on the pin end. When it reaches the makeup torque, the shoulders of pin and box ends meet together, two seal faces increase the interface of the shoul-ders. This increased the torque properties and decreased the probability of piercing. The finite el-ement analysis and fact showed that the high torque connections on drill collars was an effective measure to extend the drill pipe work life and decreased the drilling accident.
