Definition - What does Fracture Acidizing mean?
Fracture acidizing is an oil well stimulation process where acid is introduced in a rock formation at a very high pressure. It is also referred to as acid fracturing. To stimulate the oil well, hydrochloric acid is used and pushed down in the wellbore at a pressure which is beyond the formation fracturing average pressure. This process helps in keeping the channels conducive and easy to use, without conducting proppant fracturing which utilizes a proppant agent. Acid fracturing is best suitable for carbonate reservoirs with low temperatures and it's an important operation in keeping a well conducive for a longer time.
Petropedia explains Fracture Acidizing
Fracturing is an essential operation that is done in order to break down the rocks inside the earth, so that accessing the oil and gas reservoir is easy. When acid is used to induce fractures beneath the earth, it is referred to as fracture acidizing or acid fracturing. This process makes use of acids such as hydrochloric acid, which is injected inside the oil well. Focused on disintegrating the carbonate rock formations, the acid reacts with the rocks, which are partially soluble. Thus, this process leads to the erosion of the rocks that leads to the fracturing. Acid fracturing is ideal for inducing fractures in carbonate reservoirs.