Method of preventing muddy water loss in boring hole in ground

Details Method of preventing muddy water loss in boring hole in ground Method of preventing muddy water loss in boring hole in ground

E - Fixed Constructions

21

B

166/16

E21B 33/138 (2006.01) E21B 21/00 (2006.01)

Patent

CA 1178532

Abstract of the Disclosure This invention provides a mothod of preventing loss of muddy water used in boring a hole in the ground by a drill bit or the like with the muddy water introduced into the hole to stabilize hole walls and to remove slime resulting from the boring. When the muddy water is getting lost to the soil, a chemical liquid comprising an isocyanate compound or including an isocyanate compound as a main component is introduced along with a fibrous filler to a depth of the hole. The position from which the muddy water is leaking is filled with the fibrous filler and is sealed with a cured product of the chemical liquid.

408824

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