×

Method and apparatus for determining the shape of an earth borehole and the motion of a tool within the borehole

  • US 6,065,219 A
  • Filed: 09/25/1998
  • Issued: 05/23/2000
  • Est. Priority Date: 06/26/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus for estimating the actual cross-sectional shape and orientation of an earth borehole comprising:

  • (a) a rotatable tool having(1) a plurality of distance sensors for generating standoff signals representative of respective standoff distances from each of said distance sensors to respective points on the wall of a borehole at a plurality of measurement times, and(2) at least one angle sensor for generating rotational orientation signals representative of the rotational orientation angle of said tool with respect to a reference direction at said plurality of measurement times; and

    (b) a signal processor for calculating an estimate of the actual cross-sectional shape and orientation of an earth borehole based on said standoff signals and said rotational orientation signals.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×