METHOD AND APPARATUS FOR BOREHOLE STABILISATION

摘要

Apparatus for stabilising a borehole includes a delivery pipe (16) for delivering a treatment fluid to a zone of the borehole to be stabilised, the pipe having an opening (22) such that a treatment fluid can flow from the pipe into the zone; and a flexible, expandable sleeve (30) secured on the outside of the pipe (16) around the opening (22) such that fluid flowing from the pipe through the opening flows into the sleeve (30), the sleeve being formed from a permeable material that allows at least a portion of the fluid to pass therethrough into contact with the zone of the borehole.