WELLSKINS AND SLUG TESTS: WHERE'S THE BIAS?
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.
dc.contributor.author | Rovey C.W. | |
dc.contributor.author | Niemann W.L. | |
dc.date.accessioned | 2021-02-11T06:56:23Z | |
dc.date.available | 2021-02-11T06:56:23Z | |
dc.date.issued | 2001 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=558286 | |
dc.identifier.citation | Journal of Hydrology, 2001, 243, 1-2, 120-132 | |
dc.identifier.issn | 0022-1694 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/24641 | |
dc.description.abstract | Pumping tests in an outwash sand at the Camp Dodge Site give hydraulic conductivities (K) approximately seven times greater than conventional slug tests in the same wells. To determine if this difference is caused by skin bias, we slug tested three sets of wells, each in a progressively greater stage of development. Results were analyzed with both the conventional Bouwer-Rice method and the deconvolution method, which quantifies the skin and eliminates its effects.In 12 undeveloped wells the average skin is +4.0, causing underestimation of conventional slug-test K (Bouwer-Rice method) by approximately a factor of 2 relative to the deconvolution method. In seven nominally developed wells the skin averages just +0.34, and the Bouwer-Rice method gives K within 10% of that calculated with the deconvolution method. The Bouwer-Rice K in this group is also within 5% of that measured by natural-gradient tracer tests at the same site. In 12 intensely developed wells the average skin is <-0.82, consistent with an average skin of -1.7 measured during single-well pumping tests.At this site the maximum possible skin bias is much smaller than the difference between slug and pumping-test Ks. Moreover, the difference in K persists even in intensely developed wells with negative skins. Therefore, positive wellskins do not cause the difference in K between pumping and slug tests at this site. | |
dc.subject | HYDRAULIC CONDUCTIVITY | |
dc.subject | GROUND WATER MOVEMENT | |
dc.subject | SLUG TESTS, TRACER TESTS, WELLSKINS | |
dc.title | WELLSKINS AND SLUG TESTS: WHERE'S THE BIAS? | |
dc.type | Статья |
Files in this item
This item appears in the following Collection(s)
-
ELibrary
Метаданные публикаций с сайта https://www.elibrary.ru