Sure, I agree with that. If it is underground , and moves sideways, the reservoir it is contained in will get bigger, and over time, the pressure will start building again. Only place to escape the pressure building up over time, is for the oil to make it to the surface.
Under the right conditions. Inject water, sand and chemicals under high pressure, and as a result oil is created.
If it is contaminated under pressure, it will be forced upward if there is a opening that way, until the pressure has been released.
Sure, I agree with that. If it is underground , and moves sideways, the reservoir it is contained in will get bigger, and over time, the pressure will start building again. Only place to escape the pressure building up over time, is for the oil to make it to the surface.