Oil well bore hole surveying by kinematic navigation
US4768152A · kind A · utility
14Cited by
22References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1986 |
| Grant date | Aug 30, 1988 |
| Priority date | — |
| Expiry date | Feb 21, 2006 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Apparatus and method for the surveying of bore holes, for example, oil wells and the like, to permit accurate three-dimensional mapping thereof, using a single rate gyroscope and an accelerometer package in an instrumentation pod which is lowered into the bore hole. Signals from the accelerometers and the rate gyroscope plus the increments by which the pod is lowered into the well permit continual calculation of pod attitude and updated of pod position at all depths in the hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.