Patent ID: 9523264
Filing Date: 2016-12-20
CPC Classification: E21B

Claim Text:
1. A borehole gravel pack assembly, comprising: a body disposing in the borehole, the body having an inner passage from a proximal end to a distal end and defining a flow port communicating the inner passage outside the body; a first packoff seal disposed in the inner passage of the body between the flow port and the distal end; a second packoff seal disposed in the inner passage of the body between the flow port and the proximal end; and a crossover tool disposing in at least first and second positions in the inner passage of the body, the crossover tool having first and second open ends, a cross port towards the first open end, and a return port towards the second open end, the crossover tool having a smooth exterior surface on first and second sides of the cross port, the smooth exterior surface sealing against the first and second packoff seals when disposed relative thereto, whereby in the first position, the smooth exterior surface on the first and second sides of the cross port seals respectively against the first and second packoff seals such that the cross port communicates slurry from the second open end of the tool to the flow port of the body and the return port communicates fluid returns from the first open end of the tool to the proximal end of the body; and whereby in the second position, the smooth exterior surface on the first side of the cross port seals against the second packoff seal such that the cross port communicates circulation from the proximal end of the body to the second open end of the tool.