公开(公告)号：US20050082056A1

公开(公告)日：2005-04-21

申请号：US10689479

申请日：2003-10-20

申请人： Carl Baxter ,  Christopher Caldwell ,  Robert Rose ,  Brent Dyer ,  Michael Beard ,  Roy Avery

发明人： Carl Baxter ,  Christopher Caldwell ,  Robert Rose ,  Brent Dyer ,  Michael Beard ,  Roy Avery

IPC分类号： E21B17/10

CPC分类号： E21B17/1085 ,  E21B17/01

摘要： A centralizer system is provided for use in a marine riser system with an insulated pipe, which may be a titanium stress joint. The centralizer system utilizes one or more centralizers mounted such that insulation material is provided in an annulus between the one or more centralizers and the stress joint. A clamp is utilized to axially affix either one centralizer or multiple centralizers to the stress joint. The clamp is comprised of a plurality of sections with cylindrical interior surfaces which are tightened together using fasteners. The cylindrical interior surfaces avoid damage to the insulation layer which may be elastomeric. The clamp and each centralizer have radially directed projections thereon which interlock the clamp with each centralizer. Because the clamp is axially affixed, the centralizer is then also axially affixed. In one embodiment, the centralizer is axially moveable to a desired axial position prior to being interlocked to the tightened clamp.

摘要翻译： 提供了一种用于具有绝缘管的船用立管系统的扶正器系统，其可以是钛应力接头。 扶正器系统使用一个或多个安装的扶正器，使得绝缘材料设置在一个或多个扶正器和应力接头之间的环形空间中。 使用夹具将一个扶正器或多个扶正器轴向固定到应力接头。 夹具由具有圆柱形内表面的多个部分组成，所述圆柱形内表面使用紧固件紧固在一起。 圆柱形内表面避免损坏可能是弹性体的绝缘层。 夹具和每个扶正器在其上具有径向定向的突起，其将夹具与每个扶正器互锁。 因为夹具被轴向固定，所以还将轴向固定在该定心器上。 在一个实施例中，在与紧固的夹具互锁之前，中心器可轴向移动到期望的轴向位置。

公开(公告)号：US20050084337A1

公开(公告)日：2005-04-21

申请号：US10689472

申请日：2003-10-20

申请人： Christopher Caldwell ,  Carl Baxter ,  Robert Rose ,  Brent Dyer ,  Michael Beard

发明人： Christopher Caldwell ,  Carl Baxter ,  Robert Rose ,  Brent Dyer ,  Michael Beard

IPC分类号： E21B17/01 ,  E02D5/54 ,  E02D15/02

CPC分类号： E21B17/017

摘要： A centralizer system is provided for use in a marine riser system to provide a stress joint or keel joint with a upset portion. The centralizer is preferably heat-shrink fitted to the upset portion of the keel joint. The upset portion has tapered sections on the upper and lower ends which may be of various shapes and lengths that gradually blend into the outer diameter of the pipe used as the keel joint. The centralizer may also be heat-shrink fitted to one of the tapered sections. The centralizer may or may not utilize guide sections mounted on either end thereof. In a preferred embodiment, the centralizer comprises axially extending annular grooves in surrounding relationship to the upset portion, the grooves serving to permit forces acting on the centralizer to be redirected or dissipated to thereby prevent excessive buildup on a selected region of the upset portion adjacent the radial grooves. In one embodiment, the grooves are formed annularly around the ends of the upset portion to thereby limit stresses that otherwise tend to build up on the ends of the upset portion.

摘要翻译： 提供了一种用于海洋立管系统中的扶正器系统，以提供具有镦粗部分的应力接头或龙骨接头。 扶正器优选热收缩装配到龙骨接头的镦锻部分。 镦粗部分在上端和下端具有锥形部分，其可以具有各种形状和长度，其逐渐融合到用作龙骨接头的管的外径中。 扶正器也可以被热缩装配到一个锥形部分。 扶正器可以使用也可以不使用安装在其两端的引导部分。 在优选实施例中，扶正器包括与镦锻部分围绕的轴向延伸的环形槽，用于允许作用在扶正器上的力被重定向或消散的槽，从而防止过度堆积在相邻的镦锻部分的选定区域上 径向沟槽 在一个实施例中，凹槽围绕镦锻部分的端部环形地形成，从而限制另外倾向于在镦锻部分的端部上积累的应力。