Borehole formation model for testing nuclear logging instruments
US5182955A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1990 |
| Grant date | Feb 2, 1993 |
| Priority date | — |
| Expiry date | Jun 26, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The borehole formation model is built by stacking in a spaced relationship selected glass plates to simulate the formation. Each glass plate has a circular hole in the center to simulate the oil or gas borehole. The hole can be sized in different sets to simulate various borehole diameters and for accommodating casing/cement sections for simulating cased boreholes. The glass plates are supported by plastic spacers. The spacers are sized to provide a matrix section having uniform distances between layers. The "stacked" glass/spacer matrix provides only glass for simulating the formation "pore space". The glass plates have a uniform thickness, and the porosity of the simulated formation can be changed by changing the thickness of the plastic spacers. After stacking the glass plates, a "borehole" is constructed by inserting a thin stainless steel tube through the center holes of the glass stack and sealed at the bottom. Then an outer enclosure is lowered over the glass stack and bolted and sealed into place at the base of the stack. The glass stack and isolated borehole can then each be filled with a selected liquid to simulate the liquids present in the formation and the borehole und…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.