STUDI MIKROSTRUKTUR DAN MINERALOGI SAMPEL RESIN CEMENT PADA SUMUR CARBON CAPTURE AND STORAGE (CCS)

• Main Author: Aji Purbantanu, Bayu
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/40087
• Institution: Institut Teknologi Bandung

Carbon Capture and Storage (CCS) is a program that aims to inject CO2 into a rock layer. This program aims to reduce CO2 emissions to prevent climate change and global warming. The CCS pilot project in Indonesia was carried out at the B well with the target of the A formation at a depth of 854-862 m TVD which was composed of sandstone lithology. This study focuses on the workover of existing exploration wells of an oil and gas company which will be converted into CO2 injection wells. The B well must have good cement quality to prevent potential release of CO2 to the surface. However, the results of the inspection indicate that the cement used in the well exploration phase has poor cement quality. To improve the quality of cement, a squeeze cementing was performed using resin cement which is a product of a service company with X resin as an additive in Portland cement. Evaluation of cement after a squeeze cementing from the CBL-VDL (Cement Bond Log-Variable Density Log) data shows that cement quality remains poor. In this study, laboratory tests were conducted on two samples of resin cement using X-Ray Diffraction (XRD) and Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS) to determine the mineral composition, morphology of granules, and mineral matrix contained in that samples. The results of characterization using XRD show the main minerals that made up resin cement, namely CaOH)2 or Portlandite. The results of characterization using SEM-EDS show the surface morphology of cement samples is solid, there are no cracks and cavities formed and indicate the presence of epoxy resin. Based on these results, basically, the resin cement sample meets the specifications as a secondary barrier for a CCS well.