Screened hollow stem auger for use in well drilling and testing process
US4363366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 1980 |
| Grant date | Dec 14, 1982 |
| Priority date | — |
| Expiry date | Jun 13, 2000 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/088
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A vertically oriented screened hollow stem auger element for use in the simultaneous drilling and testing of wells so as to detect and monitor the existence of hazardous and toxic waste at subsurface levels. The screened hollow stem auger comprises an elongate cylindrical hollow body member having a longitudinal axial bore therethrough. The screened hollow stem auger is adapted at its opposite ends for selective lockable end to end engagement with solid wall hollow stem auger elements and other drilling components for use in the simultaneous drilling and testing of wells. The cylindrical wall of the hollow stem auger element is provided with a central screened portion in open communication with the bore thereof which permits the selective intake of ground fluids into the interior of the screened hollow stem auger element for selective conveyance through the interconnected solid wall hollow stem auger elements to the surface level for testing purposes. A continuous auger flight element is provided on the external surface of the screened hollow stem auger element so as to extend longitudinally therealong across the central screened portion thereof. The lower end portion of the screen…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.