Patent ID: 9051798
Filing Date: 2015-06-09
Classification: E21B

Abstract:
1. A subterranean production tool, comprising: a first section and a second section connectable at respective connecting ends; one of the first and second sections having a male flange at its connecting end with a substantially circular exterior; a first circumferential groove extending over at least a portion of the exterior; the other of the first and second sections having a female flange at its connecting end with a substantially circular interior; a second circumferential groove extending over a portion of the interior that is less than the full circumference of the interior; a keyway formed between the first and second grooves when the female flange is positioned over the male flange in aligned relationship; an access relief on an exterior surface of the female flange forming a passage to the keyway; and, a plurality of keys, the keys being insertable through the access relief to enter into the keyway to prevent separation of the first section and the second section.