Studi Pengembangan Model Sumur Injeksi-Produksi Terhadap Produktifitas Reservoir Panas Bumi Dominasi Air Pada Lapangan Z Dengan Simulasi Numerik

Mustofa, Muhammad Luthfi (2022) Studi Pengembangan Model Sumur Injeksi-Produksi Terhadap Produktifitas Reservoir Panas Bumi Dominasi Air Pada Lapangan Z Dengan Simulasi Numerik. Other thesis, Universitas Islam Riau.

Text 163210060.pdf - Submitted Version Download (6MB)

Abstract

The occurrence of a decrease in reservoir pressure during the production process can result in a decrease in well productivity, therefore it is necessary to carry out a geothermal reservoir management strategy with the aim of developing sustainable production. There are several steps that can be taken, namely by drilling additional wells, implementing injection wells and changing production strategies. Therefore, in this study, the application of the injection well strategy is an efficient method to reduce the reservoir pressure drop and add liquid mass for the energy extraction process from the reservoir. The use of injection wells can result in thermal breakthroughs or cooling in the production area therefore the balance of injection distance, injection flow rate, and injection well depth must be optimized to reduce the occurrence of thermal breakthroughs. Field Z is a two-phase water-dominated geothermal field which has a total reserve of 83.8 MW. The research will be conducted using reservoir numerical modeling with the help of Tough2 Software in designing a conceptual model of the Z field in determining the right injection strategy to maintain 30 MW of generating capacity for 30 years. This study aims to determine the optimal injection strategy in field Z by considering the location, depth and flow rate of injection to total steam production for 30 years. In the research conducted, there are 8 injection scenarios that are simulated using a numerical model to meet the minimum power capacity for 30 years. Based on the research results obtained that the second scenario is the right injection strategy with the location of the injection well located far from the production well this is done to give the fluid time to heat up, with a deep injection depth can accelerate the heating of the fluid before moving to the production zone and the rate injection flow of 80 kg/s. Proper injection flow rate will lead to an increase in pressure, mass production and the resulting power capacity.

Actions (login required)

View Item