Logging method and apparatus using a sonde equipped with measuring pads
US4614250A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1982 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Sep 8, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/911
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Dip measurements and investigation of geological formations traversed by a deviated borehole is carried out by means of an apparatus comprising a measuring sonde and a cartridge connected to a cable. The sonde carries four measuring pads regularly distributed by means of articulated arms which keep the pads parallel to the axis of the sonde. The opposite arms are forced to stay symmetrical in relation to the sonde. The sonde is connected to the cartridge so that its axis can depart angularly from the axis of the cartridge, enabling the latter to rest on the borehole wall. The pads have a length smaller than twice the transverse dimension D of the sonde.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.