Material and Completion-Equipment Selection for an HP/HT Sour-Gas-Field Development in Indonesia

摘要

The Lematang Block in South Central Sumatra has estimated total reserves of 330 Bscf, with an expected production life of 10 years. Wells in this field contain 32% CO2 and 100 ppm H2S, have a bottomhoie pressure (BHP) of 10,500 psi, and have a bottomhoie temperature (BHT) of 408°F. The initial two wells were completed by the previous operator using 22Cr tubulars and 13Cr accessories. However, operational difficulties from material deterioration were identified. Optimization of completion durability considering economics was of high concern when selecting materials and completion-tool designs.