[Tagging] man_made=gas_well Was man_made=petroleum_well vs man_made=pumping_rig

[Joseph Eisenberg]

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.infosreseaux at gmail.com> wrote:
> Le mer. 26 févr. 2020 à 22:06, Martin Koppenhoefer <dieterdreist at 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
>