OIL WELL STIMULATION USING ACIDIZING METHOD

Oloro J, Igho .T, Akpomreta F. and Ozor .J

Department Petroleum Engineering

Delta State University, Abraka, Nigeria

ABSTRACT

This research work is about the stimulation of oil well using matrix acidization method to improve the oil well’s productivity. Matrix acidization method involves the placement of acid within the well bore at rates and pressure designed to attack an impediment to production without fracturing or damaging the reservoir (typically, hydrofluoric acid is used for sand stone silica based problems and hydrochloric acid or acetic acid is used for limestone/ carbonate based problem.) this operation when done correctly helps to improve a well’s productivity particularly those well that are not producing to their full potentials so that the oil company can realize the highest price per barrel, and the consumer can get more oil circulating in supply to balance demand. The study revealed that it is possible to improve oil and gas production by introducing acids into oil wells that are not producing to their full potentials. Determination of the proper fluid placement is perhaps the most crucial factor in acid-treatment design in both carbonates and sandstones. When done correctly, have been shown to increase well productivity above that projected in both new and old wells. From an economic standpoint, oil produced today is more valuable than oil produced in the future.