Improvements relating to core barrel outer tubes

摘要

Described herein is a “cross-over” connector that can be used with core barrel outer tubes to prevent damage and destruction when they are connected to one another by automated equipment on a rig floor, for example, automated rig-floor torque wrenches. Standard core barrel outer tubes having a pin connector and a box connector are modified by adding “cross-over” sub elements to the pin and box connectors to increase their effective strength. The sub elements include portions which engage respective ones of the pin and box connections. The sub elements are designed to be the contact points for the automated equipment, so that it they are damaged, they can readily be replaced at a lower cost when compared to the scrapping and replacement of the core barrel outer tubes themselves.

主权项

1. A connector for core barrel outer tubes having pin and box connectors, comprising:
a first portion connectable to a pin connector of a first core barrel outer tube, the first portion having a first connecting portion and a first outer wall portion; and a second portion connectable to a box connector of a second core barrel outer tube, the second portion having a second connecting portion and a second outer wall portion; the first and second outer wall portions spaced from the respective first and second connecting portions and having an inner diameter approximately equal to an inner diameter of the first and second core barrel outer tubes and an outer diameter greater than an outer diameter of the first and second core barrel outer tubes.