Different tags are used for petroleum wells vs water wells because they look totally different and their function for the general map user is quite distinct. A water well might just be a covered hole, but if it is a bored (drilled) well it will be connected to a manual or powered pump.
An oil or gas well has a fire-hydrant like structure on top called a "Christmas tree" or a pumping rig like a "pump jack" - you will not mistake them for a water well. According to these sources, the term "petroleum" can include both natural gas and crude oil: http://energy4me.org/all-about-energy/what-is-energy/energy-sources/petroleum/ "Oil and natural gas together make petroleum. Petroleum, which is Latin for rock oil, is a fossil fuel, meaning it was made naturally from decaying prehistoric plant and animal remains. It is a mixture of hundreds of different hydrocarbons molecules containing hydrogen and carbon that exist sometimes as a liquid (crude oil) and sometimes as a vapor (natural gas)." https://www.appea.com.au/oil-gas-explained/oil-and-gas/what-is-petroleum/ "Petroleum is a general term for oil and natural gas." So a man_made=petroleum_well is a natural gas or crude oil well, but many (most?) petroleum wells produce both oil and gas. - Joseph Eisenberg On 2/27/20, François Lacombe <fl.infosrese...@gmail.com> wrote: > Le mer. 26 févr. 2020 à 22:06, Martin Koppenhoefer <dieterdre...@gmail.com> > a écrit : > >> >> these aren’t independent concepts, a water well works differently than a >> gas well. The substance (and its intended use, and the intended quantity) >> define/s the requirements for the well. >> > > We both agree on the sense. > I meant semantic independence where substance got its own key and man_made > regards the well only. > > Deep dug wells also exists for water (to take it out artesian aquifer for > instance or see GMMRP in Lybia), then we may need additional value for such > drilled wells. > > man_made=well => "surface" well > man_made=drilled_well => very profound well > Both can get substance=* to state what we take out of each. > > All the best > > François > _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
