Wells – Processes – With indicating – testing – measuring or locating
Patent
1981-01-12
1982-11-09
Novosad, Stephen J.
Wells
Processes
With indicating, testing, measuring or locating
166187, 166191, 166385, 166387, 175214, E21B 700, E21B 2306, E21B 33124, E21B 33126
Patent
active
043579922
ABSTRACT:
The apparatus and technique are applicable to fluid pressurizing a portion of an elongated hole in the ground when a hollow tubular fluid transmission member is installed lengthwise therein. According to the technique, inflatable closure means are installed in the hole at a site adjacent the distal end portion of the member, and the closure means are inflated to form a fluid seal crosswise the hole at a longitudinal level therein spaced apart from the bottom of the hole. Fluid is charged into the member, and an opening is formed in the fluid seal whereby the fluid can discharge into the space between the level of the seal and the bottom of the hole to pressurize a portion of this space. In some embodiments, means are interposed between the member and the seal to deliver the fluid to the opening in the seal.
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Weir Jones Engineering Consultants Ltd. Technical Service Bulletins 75-1 and 75-2.
The Piezofor--Continuous Membrane Borehole Piezometer, The Dectotofor--Inflatable Overpressure Gauge (France)
Duffy Christopher
Novosad Stephen J.
Tigre Tierra, Inc.
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