Pattern drilling exploration: Optimum pattern types and hole spacings when searching for elliptical shaped targets
Journal of the International Association for Mathematical Geology
By: L. J. Drew
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Abstract
In this study the selection of the optimum type of drilling pattern to be used when exploring for elliptical shaped targets is examined. The rhombic pattern is optimal when the targets are known to have a preferred orientation. Situations can also be found where a rectangular pattern is as efficient as the rhombic pattern. A triangular or square drilling pattern should be used when the orientations of the targets are unknown. The way in which the optimum hole spacing varies as a function of (1) the cost of drilling, (2) the value of the targets, (3) the shape of the targets, (4) the target occurrence probabilities was determined for several examples. Bayes' rule was used to show how target occurrence probabilities can be revised within a multistage pattern drilling scheme. ?? 1979 Plenum Publishing Corporation.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Pattern drilling exploration: Optimum pattern types and hole spacings when searching for elliptical shaped targets |
| Series title | Journal of the International Association for Mathematical Geology |
| DOI | 10.1007/BF01028966 |
| Volume | 11 |
| Issue | 2 |
| Year Published | 1979 |
| Language | English |
| Publisher location | Kluwer Academic Publishers-Plenum Publishers |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Journal of the International Association for Mathematical Geology |
| First page | 223 |
| Last page | 254 |
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