01880nmc a2200217 4500 20260520005830.0 260224s xxu CD I249 1 0013788 The first sucsessful multi staged fracturing in a deep volcanic gas reservoir in Japan 12/09/06 ; 22/07/2003 12 p. Disponible en CD en formato PDF Transcripción del abstract original del autor: The first multi-stage completion in a deep, hot, and naturally fractured volcanic rock of the Minami-Nagaoka gas field, Niigata Prefecture, Japan, was successfully completed using six propped fracture treatment stages. During two propped fracture treatments pumped in early ‘90s, treatments failed miserably with only about 20% of the designed proppant placed before job termination due to premature screen-outs. The new treatments in Minami-Nagaoka focused on the ability to mitigate the adverse effects of multiple hydraulic fracture propagation and the accompanying severe near-wellbore fracture tortuosity. Many unconventional changes, including completion changes to obtain highest possible injection rates to enhance proppant placement, aggressive proppant slug strategy, real-time fracture treatment analysis, gel testing for minimization of proppant damage, careful perforation placement, quality control, extreme overbalance perforating, and use of small-grained proppant, resulted in successful stimulation and favorable production response. This paper focuses on these new design concepts and also the fracturing results. CONGTP Sugiyama, Hiromi 22649 International Gas Union, IGU 13105 World Gas Conference (22nd. : 2003 jun 1-5 : Tokyo) 22029 International Gas Union, IGU 13105 150010 150010 0 0 0 0 217829 BAAB BAAB CD I249 1 0013788 2026-03-04 200026016 0 CD I249 1 0013788 200026016 2026-03-04 16:39:11 2026-03-04 ARCHIVO