02466nmc a2200325 4500 20260520005606.0 260224s2001 xxu ing Inglés OPTIMIZING DEVELOPMENT COSTS BY APPLYING A MONOBORE WELL DESIGN SPE 69498 Dallas, Texas Society of Petroleum Engineers 2001 12/09/06 ; 17/07/01 The An Aike–Barda Las Vegas field, located in the Austral basin 80 km west of Rio Gallegos, Argentina, represents an important discovery in basin development in recent years. The field is an important Springhill formation gas reservoir at an approximate depth of 3100 m and with static pressure of 4400 psi. Gas rates are up to 1 MM m 3 /d/well. Drilling appraisal and development wells requires the optimization of every operation involved. In this context, improvements in well construction and completion methodology are important contributions. Original well design included 13 3 /8-in. surface and 9 5 /8-in. and 7-in. casings, with a permanent packer and 4 1 /2-in. tubing. The new monobore well design reduces the diameter of each drilled section, narrowing to a 4 1 /2-in. monobore installation through the pay zone. The rigless completion includes coiled tubing. Before adopting the design change, potential risk analyses were made to account for the possibility of future reentries and for simultaneous development of a second target (Magallanes formation) at 1700 m. The final well design model showed a cost savings of 30 percent, a sizeable impact on the economics of this project. CONGTP García, Rodolfo 6153 Alfaro, Edgardo 6154 Bernardis, Alfredo 6155 Casalis, Daniel 6156 Gallardo, José 6157 Zotto, Daniel Del 6158 Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) 5738 Alfaro, Edgardo 6154 Bernardis, Alfredo 6155 Casalis, Daniel 6156 Gallardo, José 6157 Zotto, Daniel Del 6158 Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) 5738 García, Rodolfo 6153 131006 131006 https://biblioteca.iapg.org.ar/ArchivosAdjuntos/LACPEC2001/Spe69498.pdf 0 0 0 0 201928 BVIAPG BVIAPG 2026-03-03 200003061 0 200003061 2026-03-03 01:41:09 2026-03-03 ARCHIVO