Title:
UNDERGROUND WELL BORING DEVICE AND METHOD FOR FORMING SAID DEVICE
Document Type and Number:
Japanese Patent JPS62242090
Kind Code:
A
Abstract:
Probe and method for determining the curvature of an elongated opening such as a borehole in the earth. The probe includes an axially extending flexible shaft and two pairs of sensing wires arranged in quadrature about the shaft for axial movement relative to each other upon bending of the probe. The relative axial positions of the sensing wires on opposite sides of the flexible shaft are monitored to determine the curvature of the borehole.
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Inventors:
BEN UEIDO OOKUSU DEITSUKINSON
ROBAATO UEIN DEITSUKINSON
DEIBUITSUDO TOMURINSON RATSUBU
RANDERU AARU ANDAASON
ERITSUKU DABURIYUU DEITSUKINSO
HAAMAN DAIKUSUTORA
CHIYAARUZU ESU MATSUKII
AABUINGU ERU OJIYAAZU
RICHIYAADO II KAMINGUZU
MAARU DEI RAASON
ROBAATO UEIN DEITSUKINSON
DEIBUITSUDO TOMURINSON RATSUBU
RANDERU AARU ANDAASON
ERITSUKU DABURIYUU DEITSUKINSO
HAAMAN DAIKUSUTORA
CHIYAARUZU ESU MATSUKII
AABUINGU ERU OJIYAAZU
RICHIYAADO II KAMINGUZU
MAARU DEI RAASON
Application Number:
JP30360386A
Publication Date:
October 22, 1987
Filing Date:
December 19, 1986
Export Citation:
Assignee:
DICKINSON BEN WADE O
ROBAATO UEIN DEITSUKINSON
ROBAATO UEIN DEITSUKINSON
International Classes:
E21B7/08; E21B7/06; E21B7/18; E21B17/07; E21B21/12; E21B29/02; E21B43/11; E21B44/00; E21B47/022; (IPC1-7): E21B7/08
Attorney, Agent or Firm:
Minoru Nakamura