Patent ID: 8894101
Filing Date: 2014-11-25
Classification: E21B,F16L

Abstract:
1. A tubular connection comprising: a tubular box having an internal threaded section extending from a rim, and a nose receptacle area joining the threaded section; a box seal surface formed on the nose receptacle area; a tubular pin having a nose area extending from a pin end, and an external threaded section joining the nose area, the external threaded section mating with the internal threaded section; an alignment surface defined on the nose area, the alignment surface tapered to decrease in a direction toward the pin end from the external threaded section such that the alignment surface is operable to engage the internal threaded section of the tubular box to concentrically align the tubular pin with the tubular box when the tubular pin is stabbed into the tubular box; an annular groove on the alignment surface between the pin end and the external threaded section; and a pin seal surface having a recessed portion located in the groove that engages the box seal surface to form a metal to metal sealing engagement; wherein the first nose section from the pin end to the pin seal surface is spaced radially apart from the nose receptacle when the pin is made up with the box.