公开(公告)号：US20130341051A1

公开(公告)日：2013-12-26

申请号：US13530943

申请日：2012-06-22

申请人： William Thompson Higgins ,  John E. Nelson ,  Chau Hoang

发明人： William Thompson Higgins ,  John E. Nelson ,  Chau Hoang

IPC分类号： E21B33/12

CPC分类号： E21B33/04

摘要： A wellhead assembly having an inner tubular insertable into an outer tubular. A packoff is provided on an outer surface of the inner tubular for sealing between the inner and outer tubulars. The packoff includes an energizing ring, a U-shaped seal member, and a nut for retaining the seal member against the energizing ring. The seal member includes legs that are spaced apart by interaction with the energizing ring. The outer tubular has a bore wall that is profiled so that when the inner tubular is inserted into the outer tubular, an outer leg of the seal member is spaced radially outward from the bore wall until the inner tubular is landed in the outer tubular. When the inner tubular member is landed, a portion of the bore wall adjacent the outer leg tapers radially inward into sealing contact with the outer leg of the seal member.

摘要翻译： 一种井口组件，其具有可插入外管的内管。 在内管的外表面上提供包装以密封内管和外管。 包装包括通电环，U形密封构件和用于将密封构件保持抵靠通电环的螺母。 密封构件包括通过与激励环相互作用间隔开的腿。 外管具有孔壁，其被成型为使得当内管插入到外管中时，密封件的外腿与孔壁径向向外间隔开直到内管着落在外管中。 当内管状构件着陆时，邻近外腿的孔壁的一部分径向向内逐渐变细，以与密封构件的外腿密封接触。