A study on well acidizing, its different methods and a review of organic acids as substitutes for hydrochloric acid

Well working acid is a process that is used in oil and gas reservoirs to increase the permeability of the reservoir rock and increase the flow rate of the oil well. After drilling the well, in order to remove the sticky material of drilling mud and also to remove the pieces of reservoir rock that are left in the well, this operation is done, and in general, the working method is that acid, which has different types, is prepared at the wellhead and It is injected into the well. Usually, the acidification of the wells is done by mobile brain tube technology. Acidizing methods: ۱. Acid matrix ۲. Creating cracks and cracks in the tank rock by acid ۳. Washing and cleaning the tank rock with acid. The subject of acid working as one of the most common methods of stimulating the well in order to remove the damage caused in the well, as well as to increase production in it, is one of the subjects that many researchers have researched on this subject in the fields of Its various aspects, including the use of different organic and inorganic acids and the expression of their benefits in sandstone and carbonate formations, different methods of acid injection, interactions occurring in acidification, reservoir rock changes. After acid attack and other issues, they have paid. However, no research has been done regarding whether it is possible for acid reaction products with reservoir rock to form sediment or not; Because if this happens, the acid-work operation will be disturbed. In this research, firstly, some of the concepts related to the tank and acidification will be discussed and then some of the researches that have been done so far will be reported.

کلیدواژه ها:

well acidizing ، Organic acids ، Hydrochloric acid ، Acidizing