A method to collect representative samples from water-driven percussion drilling techniques: examples from RoXplorer® coiled tubing drill rig

Autor:	B. van der Hoek, F. Blaine, D. Giles, C. Tiddy, M. Mostofi, S. Soe
Přispěvatelé:	van der Hoek, B, Blaine, F, Giles, D, Tiddy, C, Mostofi, M, Soe, S
Rok vydání:	2022
Předmět:	mineral exploration sampling Earth and Planetary Sciences (miscellaneous) direct circulation General Earth and Planetary Sciences depth fidelity drilling geochemistry
Zdroj:	Australian Journal of Earth Sciences. :1-19
ISSN:	1440-0952 0812-0099
DOI:	10.1080/08120099.2022.2046635
Popis:	Water-driven percussion drilling techniques, such as that used by the RoXplorer(R) coiled tubing drill rig, return a rock sample as cuttings that are carried to the surface by the circulating drilling fluid. This drilling technique does not deliver a core sample. In order for the RoXplorer(R) to be effective as a mineral-exploration drill rig, it is critical to develop robust, representative and repeatable sampling techniques for the rock cuttings and to establish with confidence the depth interval from which the sample was derived. The RoXplorer(R) produces more than 7 kg/m of cuttings every few minutes (rate of penetration dependent) that are carried to the surface by the drilling fluid with a fluid return rate of 80-150 L/min. The cuttings, which range in size from
Databáze:	OpenAIRE
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