Apparatus and method for testing reservoir drilling fluids for drilling unconsolidated tar sands
US7716968B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2007 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Sep 13, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and method for testing fluids to be used when drilling in unconsolidated sand formations includes a container having a first port and a second port and a plurality of perforations through which fluid can be communicated, a bore holder slidingly retained through a portion of the container between the first port and the second port, wherein the bore holder has a feed end and a discharge end, a bed of unconsolidated sand contained in the container in a compacted state surrounding the bore holder, a fluid distribution nozzle at the discharge end of the bore holder, a fluid source in fluid communication with the discharge end of the bore holder, wherein the fluid source provides a test fluid to the fluid distribution nozzle through the bore holder, wherein the bore holder is withdrawn from the container at a predetermined speed as the test fluid is communicated through the fluid distribution nozzle, thereby leaving a simulated well bore in the unconsolidated sand.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.