Well,

Oil pollution from oil fields is a well-known case, especially in the field of oil pollution of the seas and the pollution of coastal waters and ports as well as surface water. Although the world oil varies from region to region, the basic compounds in crude oil are the same polluting with different proportions. The most important are aliphatic compounds, ringed compounds, aromatic compounds, and aromatic naphthenic compounds, as well as resin, asphalt and mineral compounds. The extent of its impact on water ions is caused by the quality of oil field water during extraction or processing.

Hello

What is the effect of oil field on Cl, So4, Co3, Hco3, Na, Ca, Mg, K ?

How do you think about oilfield waters and surface water interaction ?

Effect of an oil spill/pollution to the rivers, surface waters ?

Or produced reservoir water pollution to the surface waters like rivers or lakes or shallow ground waters ? or what ?

Well,

That depends on the mixing and dispersion mechanisms between oilfield water and surface water.

Regards