Method for rapid sealing of boreholes
OwnerCarl E. Kellerinventor
Life of this patent
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Abstract
A method and apparatus for rapidly installing or withdrawing a sealing liner into or out of a subsurface well bore or borehole. An eversion aid is engaged with the liner, the eversion aid serving to push the liner down the borehole during installation, and to assist in proper liner extraction during its withdrawal from the borehole. Water is transferred between the liner interior and the borehole outside the liner to regulate the disposition of borehole water, and to aid in proper sealing functions of the liner and to promote proper liner extraction during withdrawal. Various embodiments and features of the eversion aid apparatus are disclosed.
Claims20
A method for rapidly everting a sealing liner down a borehole, comprising the steps of:
- everting a distal portion of a tubular liner about a movable eversion point to define an everted portion of the liner and an inverted portion of the liner;
- holding a distal, everted end of the liner at a position at or near the top of the borehole;
- disposing an eversion aid between the inverted portion of the liner and the everted portion of the liner, near the eversion point;
- and
- allowing the eversion aid to move down the borehole past the everted portion of the liner to move the eversion point toward the borehole bottom.
Dependencies are inferred from the claim text.