Method and apparatus for molding underground diaphragms

Details Method and apparatus for molding underground diaphragms Method and apparatus for molding underground diaphragms

1988-01-22

1989-09-19

Neuder, William P.

Wells

Processes

Cementing, plugging or consolidating

166 51, E21B 3313

Patent

active

048672408

ABSTRACT:
A method wherein a hole is made in the ground having the depth intended for a diaphragm, the hole being a narrow cylindrical cavity. Into this cavity is successively inserted a drill head including at least one ejection element having its axis aimed in a direction transverse to the axis of the cavity. The head is connected by means of a one-piece flexible tube to elements which supply the substance to be used for reinforcing and waterproofing the ground under pressure to the ejection element. The reinforcing substance is discharged through the ejection element at the same time that the head is drawn toward the surface, the axis of the ejection element being maintained in its oriented position in a controlled manner in a plane perpendicular to the axis of the cavity to form a diaphragm.

REFERENCES:
patent: 2791886 (1957-05-01), Veder
patent: 3052298 (1962-09-01), Malott
patent: 3326003 (1967-06-01), Marconi
patent: 3800544 (1974-04-01), Nakanishi
patent: 4441556 (1984-04-01), Powers et al.

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