borehole.xsd A GML conformant schema for borehole descriptions with logs Copyright © 2005 CSIRO - see https://www.seegrid.csiro.au/twiki/bin/view/Xmml/LegalNotices#Software_Notice An exploration well, borehole or drillhole, with logs. An exploration well, borehole or drillhole, with logs. 1. A borehole or well will often have several externally assigned identifiers or names, for example given by the driller, the logging contractor, the resource company, regulators, etc 2. The value of the "position" property will normally be the collar-location, but may be any other representative position. N.B. The detailed geometry, including location, is given by the value of the *shape* property. This element contains or points to a description of a drilling event The diameter of the borehole. An arbitrary set of borehole logs Drilling methods Rotary air blast drilling Reverse circulation drilling HQ, NQ Diamond Drilling HQ Diamond Drilling NQ Diamond Drilling