What typically happens to porosity during production from an oil reservoir?Group of answer choicesIncreasesDecreasesDoesn't Change

Porosity is a measure of the void spaces in a rock where oil, gas, or water can be stored. It is an inherent property of the rock and is determined by factors such as the rock type, the way the rock was formed, and the subsequent geological events that the rock has undergone.

During the production from an oil reservoir, the oil is extracted from these void spaces. However, the extraction of oil does not typically change the size or number of these void spaces. Instead, the oil is usually replaced by another fluid, such as water or gas.

Therefore, the porosity of the reservoir typically doesn't change during production. So, the correct answer is Doesn't Change.