PERFORMANCE OF DIFFERENT ACIDS WITH VARIOUS FORMULATIONS FOR SANDSTONE FORMATIONS (TERENGGANU SAND)

This report summarizes an experimental work about various acid used in sand acidizing by saturating the core sample, including the literature review, the methodology, and the result achieved from the experiment. As acidizing method has been used for many years in oil and gas wells, it is expected to improve the performance of the core sample, which in this case is taken from sandstone formation.
The objective of this project is to determine the most effective acid formulation that increases the core properties the most, especially the permeability. Ten cores are prepared from sands sample taken from Paka Beach, Terengganu, Malaysia. Analyzing the core properties i.e. porosity and permeability will be done beforehand followed by trial-and-error experiment in Core Analysis Lab in Universiti Teknologi PETRONAS, Malaysia. This project only focuses in matrix acidizing method for sandstone formation, whereby the core will be saturated with various acid formulations. The approach for the experiment is unusual compare to common acidizing treatment as the equipments are limited in the lab.
The literature review involved are mostly about sand acidizing, types of acids used in general, and stages of acidizing. All is summarized from open journals found in the internet and other sources i.e. books, thesis, etc. Methodology to achieve the project objective is also given, which consists of research methodology, project activities, experiment methodology, key milestone, and project Gantt chart. The result and discussion for this project will be elaborated and conclusion will be at the end of the report.