Integrated Completion Study for Hpht Sour Gas Well Development in Carbonate Reservoir X

Steven Chandra (1), Wijoyo Niti Daton (2), Ellen Setiawan (3)
(1) Institut Teknologi Bandung, Indonesia,
(2) , Indonesia,
(3) , Indonesia


The increasing need for energy sources and the decreasing available reserves have promoted oil and gas companies to explore and manage marginal reservoirs, such as the sour gaseous environment. This is to maintain the balance of energy supply and demand. Due to the supply of Natuna Gas Field, the gap in gas supply-demand is likely to decrease by 20%, as regards the example of a potential sour gaseous environment (Batubara, 2015). Therefore, the immediate development of this potential source is very relevant. The sour field approximately shares 40% of Indonesia’s total gas reserve with 75% recovery, at an estimated OGIP of 222 TSCF. However, this environment is economically unproductive due to having high carbon dioxide (CO2) and hydrogen sulfide (H2S) contents, which are toxic and corrosive. Based on previous studies, the X-reserves reportedly contained 32% CO2 and 7072 ppm H2S, with fluid gravity of 42 API. This discretionary source of CO2 was recently brought into production from a well with a depth of 8400 ft, perforated at a limited interval of 7100 to 7700 ft. The harsh environment presented many challenges to the completion of the design, as well as the need to incorporate corrosion effects with unique equipment and material selection for the tubular structure. Therefore, this study aims to determine reservoir fluids and production performance, as well as also predict the corrosivity of dissolved CO2 in the natural gas. With the simulation and prediction, the proper material and equipment selection was obtained, based on the required sour service. The results showed that the wet gas reservoir of the X-field produced an optimum rate of 19.1063 MMSCFD. For the completion of the design, Nickel Alloy SM2535 or SM2242 was needed, due to damages in form of corrosion and pitting

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Steven Chandra (Primary Contact)
Wijoyo Niti Daton
Ellen Setiawan
Chandra, S., Daton, W. N., & Setiawan, E. (2022). Integrated Completion Study for Hpht Sour Gas Well Development in Carbonate Reservoir X. Journal of Earth Energy Engineering, 11(1), 34–51.

Article Details

Received 2021-06-18
Accepted 2021-10-07
Published 2022-03-30