Wow, the US has just under a million operating U.S. oil and natural gas wells? That number surprised me, I don't know what I expected but I wouldn't have guessed that many.
Oil wells have super long useful lives (50+ years) but The majority only produce <15bbl/day due to decline curves (especially pronounced gor.
The footprint of a well pad is pretty small one they’re in production ~<1/4 - 1/2 /acre. Many modern well pads can have multiple wells (4/6/12) due to directional drilling, further increasing well count.
https://www.eia.gov/petroleum/wells/pdf/full_report.pdf