is it true that some oil wells in saudi arabia are starting to produce salt water?

Answer 1

Gas is lighter than oil which is lighter than water, so it is typical in an oil reservoir to have all three, with the gas on top and the water on the bottom. When a well is first sunk it produces mostly oil, but with age it starts producing more and more water, that's called the "water cut" or the fraction of fluids that are water. In Saudi Arabia they use seawater injection in many fields to drive the oil up to the wells, so they often end up producing salt water along with the oil. They have separation areas that remove and recycle the water. Eventually it does not pay to separate them because there is too much water and then the well is shut down.

Answer 2

salt rock is one of the important structure of the oil reservoir, because all economic reservoir need a caps rock and that is the function of salt in this structure. Oil reservoir is not only contain of oil but it might also contain gas and water, the decrease of oil will increase the contain of water in this reservoir and the water could be dissolve the salt.

Answer 3

When the oil is removed there is a void which sea water perculates into and filling it up

Answer 4

...Thats weird...and i doubt that its true...