Bore-hole packer

Details Bore-hole packer Bore-hole packer

E - Fixed Constructions

21

B

E21B 33/127 (2006.01) E21B 33/124 (2006.01) E21B 33/134 (2006.01)

Patent

CA 2052308

- 29 - Abstract of the Disclosure Title: BOREHOLE PACKER The packer (4) is for use in isolating long lengths (ie heights) of a borehole (2), eg between sampling points. The packer includes bentonite (23) which is activated by the natural groundwater in the borehole. The water is admitted into the bentonite through narrow portholes (21), which delays the flow of water into the packer. The water is distributed evenly throughout the bentonite by means of blotting paper (14,16), which soaks up the incoming water and prevents the water passing to the bentonite until the blotting paper is all saturated. Alternatives to the use of blotting paper, to transmit the water evenly over and through the whole body of bentonite, include perforated corrugated plastic, corrugated cardboard, and perforated plastic pipes. (Fig 1)

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