Expandable screen by spring force

摘要

A sand control screen assembly selectively positionable within a wellbore. The sand control screen assembly comprises a pipe having an internal flow path, an external fluid collection subassembly in fluid communication with the internal flow path, a filter medium disposed in a fluid path between the exterior of the sand control screen assembly and the internal flow path, a biasing mechanism, configured to bias the fluid collection subassembly towards a wall of the wellbore, disposed between the fluid collection subassembly and the pipe, and a retaining mechanism configured to release the biasing mechanism in response to a trigger.

主权项

1. A sand control screen assembly selectively positionable within a wellbore, the sand control screen assembly comprising:
a pipe comprising an internal flow path disposed therethrough; a fluid collection subassembly disposed externally to the pipe and in fluid communication with the internal flow path, wherein the fluid collection subassembly is configured to prevent at least some particulate matter from entering the internal flow path, wherein the fluid collection subassembly comprises a sliding member slidingly engaged with an opening in a wall of the pipe; a biasing mechanism disposed between at least a portion of the fluid collection subassembly and the pipe, wherein the biasing mechanism is configured to bias the fluid collection subassembly towards a wall of the wellbore, and wherein the biasing mechanism comprises at least one spring disposed about the sliding member; and a retaining mechanism configured to release the biasing mechanism in response to a trigger.