| Abstract: | This paper describes experiments using wireline-rotary air-coring techniques conducted in the Bandelier Tuff using a modified standard wireline core-barrel system. The modified equipment was used to collect uncontaminated cores of unconsolidated ash and indurated tuff at Los Alamos, New Mexico. Core recovery obtained from the 210-foot deep test hole was about 92 percent. A standard HQ-size, triple-tube wireline core barrel (designed for the passage of liquid drilling fluids) was modified for air coring as follows: (1) Air passages were milled in the latch body part of the head assembly; (2) the inside dimension of the outer core barrel tube was machined and honed to provide greater clearance between the inner and outer barrels; (3) oversized reaming devices were added to the outer core barrel and the coring bit to allow more clearance for air and cuttings return; (4) the eight discharge ports in the coring bit were enlarged. To control airborne-dust pollution, a dust-and-cuttings discharge subassembly, designed and built by project personnel, was used. (USGS) |
| Genre: | USGS Numbered Series |
| ProdID: | 30081 |
| Citation Author: | Teasdale, W. E.; Pemberton, R. R. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | iii, 9 p. :ill. ;28 cm. |
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| Citation Publisher: | U.S. Geological Survey, |
| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 84-4176 |
| Citation Search Results Text: | Wireline-rotary air coring of the Bandelier Tuff, Los Alamos, New Mexico; 1984; WRI; 84-4176; Teasdale, W. E.; Pemberton, R. R. |
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| Citation Year: | 1984 |
| Type: | citation/reference |
| Text: | Wireline-rotary air coring of the Bandelier Tuff, Los Alamos, New Mexico; 1984; WRI; 84-4176; Teasdale, W. E.; Pemberton, R. R. |
| URL (THUMBNAIL): | http://pubs.usgs.gov/wri/1984/4176/report-thumb.jpg |
| URL (DOCUMENT): | http://pubs.usgs.gov/wri/1984/4176/report.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
| Publisher: | U.S. Geological Survey, |
