Method of Installation of a Flexible Borehole Liner Without Eversion

摘要

A method and apparatus for installing a flexible liner directly into a pipe or borehole without everting the liner. The liner is lowered directly, without eversion, into either a cased borehole with slotted screens, or in an uncased borehole, without the hazard of abrasion of the liner. A removable protective sheath temporarily disposed around the liner avoids damaging penetration of the liner during installation. By the invention, it is possible to include tubing and other measuring and sampling devices attached to the liner that are too stiff to be included on an everting liner. Means and methods for releasably attaching the sheath to the liner, and for anchoring the liner in a borehole, are provided.