1. 1) Ivan, C. D., Quintana, J. L., Blake, L. D., Annual Technical Conference and Exhibition, SPE Ins. 71377, (2001).
2. 2) Oyatomari, C., Orellan, S., Alvarez, R., Bojani, R., IADC-Global Leadership for the Drilling Industry session, (2002).
3. 3) Montilva, J., Ivan, C. D., Friedheim, J., Bayter, R., Offshore Technology Conference, OTC14278, (2002).
4. 4) Rea, A., Alvis, E. C., Paiuk, B., Climaco, J., Vallejo, M., Leon, E., Inojosa, J., Latin American and Caribbean Petroleum Engineering Conference, SPE Ins. 81082, (2003).
5. 5) Gregoire, M., Hibig, N., Stansbury, Al-Yemeni, M. S., Growcock, F. B., IADC World Drilling, (2005).