TUBULAR STRING WITH LOAD TRANSMITTING COUPLING

The invention discloses a tubular string. A tubular string having a box end and pin end coupled to one another with a threaded attachment and a coupling assembly. The coupling assembly includes an annular outer thrust ring having an axial end abutting a shoulder on a terminal end of the box end. Included with the coupling assembly is an inner thrust ring, which is also annular, and which has an end that axially abuts a shoulder formed along an outer surface of the pin end. An alternate type of the inner thrust ring is made up of two separate semi-circular members that circumscribe the pin endwhen positioned in the recess so their arcuate ends adjoin. The inner thrust ring inserts into the outer thrust ring, and has a radial surface on its outer circumference that lands on a shoulder formed along an inner circumference of the outer thrust ring. 本发明公开了一种管柱，该管柱具有通过带螺纹附件和联接组件彼此联接的箱形端部和销形端部。该联接组件包括环形外止推圈，该环形外止推圈具有邻接箱形端部的末端上的肩部的轴向端部。该联接组件包括内止推圈，该内止推圈也是环形的，并且具有轴向邻接沿销形端部的外表面形成的肩部的端部。该内止推圈的另选类型由两个单独的半圆形构件组成，当定位在凹陷部中时，