TY - DATA AU - García,Rodolfo AU - Alfaro,Edgardo AU - Bernardis,Alfredo AU - Casalis,Daniel AU - Gallardo,José AU - Zotto,Daniel Del AU - Alfaro,Edgardo AU - Bernardis,Alfredo AU - Casalis,Daniel AU - Gallardo,José AU - Zotto,Daniel Del ED - Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) ED - Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) TI - OPTIMIZING DEVELOPMENT COSTS BY APPLYING A MONOBORE WELL DESIGN: SPE 69498 PY - 2001/// CY - Dallas, Texas PB - Society of Petroleum Engineers N2 - 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 UR - https://biblioteca.iapg.org.ar/ArchivosAdjuntos/LACPEC2001/Spe69498.pdf ER -