Patent ID: 9556695
Date: 2017-01-31
CPC Classifications: E21B

Claim:
1. A debris barrier assembly for an annular gap between relatively movable tubular members comprising: an inner tubular member surrounded by an outer tubular member to define an annular gap therebetween; said inner tubular member movable uphole and downhole with respect to said outer tubular member; an annularly shaped debris barrier disposed in said gap adjacent an upper end of said outer tubular member and above a seal in said annular gap to protect said seal from debris, said debris barrier selectively mechanically locked with a lock having a longitudinal height extending from an upper end to a lower end thereof, said lock extending radially at least in part to a locking groove in said outer tubular member and remaining locked during a predetermined uphole and downhole relative movement of said inner tubular member greater than said longitudinal height whereupon lifting said inner tubular member relative to said outer tubular member beyond said predetermined amount releases said debris barrier from said outer tubular member.