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公开(公告)号：US3913668A
公开(公告)日：1975-10-21
申请号：US39067973
申请日：1973-08-22
发明人： TODD WILLIAM W , ILFREY WILLIAM T , LLOYD JAMES R
CPC分类号： E21B17/01
摘要： A marine riser assembly for use in offshore drilling operations includes a riser pipe, a ball joint in the riser pipe near its lower end, and steel kill and choke lines extending down the riser pipe to points below the ball joint, the kill and choke lines being attached to the riser pipe at points above the ball joint and including helical sections which extend around the ball joint and adjacent portions of the riser pipe through an angle of at least about 360* and at a radial distance from the ball joint and riser pipe sufficient to permit lateral flexing of the ball joint without exceeding the maximum allowable stresses for the helical sections.
摘要翻译： 用于海上钻井作业的海洋立管组件包括提升管，靠近其下端的提升管中的球窝接头，以及从提升管延伸到球窝接头下方的钢杆和扼流管线，扼流线 在球接头上方的点附接到提升管，并且包括螺旋部分，其围绕球接头和提升管的相邻部分延伸至少约360度的角度并且距离球窝接头和提升管 足以允许球接头的横向弯曲，而不超过螺旋段的最大允许应力。
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公开(公告)号：US3872713A
公开(公告)日：1975-03-25
申请号：US32822573
申请日：1973-01-31
发明人： ILFREY WILLIAM T , MCLAIN JOHN D , TODD WILLIAM W
IPC分类号： E21B33/043 , E21B47/10 , G01M3/36 , G01M3/14
CPC分类号： E21B47/1025 , E21B33/043 , G01M3/36
摘要： Method and apparatus are disclosed for testing annular seal assemblies of the type positioned between the upper exterior of a tubular member and a subsea wellhead or similar assembly from which the tubular member is suspended. The inner bore of the tubular member is isolated from the space directly above the seal. Then pressure is applied above the seal to create a differential pressure across it. A physical property of the tubular member is monitored as pressure is increased to detect any change in the monitored property indicative of a change in external pressure on the portion of the tubular member situated below the seal.
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