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In this paper, we combine a probabilistic neural method with radial-bias functions in order to construct the lithofacies of the wells DF01, DF02 and DF03 situated in the Triassic province of Algeria (Sahara). Lithofacies is a crucial problem in reservoir characterization. Our objective is to facilitate the experts' work in geological domain and to allow them to obtain quickly the structure and the nature of lands around the drilling. This study intends to design a tool that helps automatic deduction from numerical data. We used a probabilistic formalism to enhance the classification process initiated by a Self-Organized Map procedure. Our system gives lithofacies, from well-log data, of the concerned reservoir wells in an aspect easy to read by a geology expert who identifies the potential for oil production at a given source and so forms the basis for estimating the financial returns and economic benefits., {"references":["T. Takazawa, Y. Utsunomiya, Y. Komoriya, M. Bandai, I. Sasase, \"VBR\nvideo transmission with isochronous and asynchronous transfer mode over\nWireless 1394\", Wireless Personal Multimedia Communications, 2002.\nThe 5th International Symposium on, Volume: 3, pp.1088-1092, October\n2002.","D. Kang, K. Kang, J. Lee, \"UPnP AV Architectural Multimedia System\nwith an OSGi Platform\", International Symposium on Consumer\nElectronics 2004, Vol. 1, pp. 442-446, September 2004.","UPnP AV Architecture:0.83, June 2002.","Takashi Sato, \"Wireless 1394 and The Home Network\", 1394 Developers-\nConference 2003, June 2003.","H. Zhang, T. Udagawa, T. Arita, and M. Nakagawa, \"Home Entertainment\nNetwork: Combination of IEEE 1394 and Ultra Wideband Solutions\",\nUltra Wideband Systems and Technologies, 2002. Digest of Papers. 2002\nIEEE Conference on, pp.141-145, May 2002.","Don Anderson, \"FireWire System Architecture 2nd edition\",\nMINDSHAARE,INC, 1999.","IEEE 802.11e/D8.0, Draft Supplement to Part 11: Wireless Medium\nAccess Control (MAC) and Physical Layer (PHY) specifications: Medium\nAccess Control (MAC) Enhancements for Quality of Service (QoS),\nFebruary 2004.","Protocol Adaptation Layer (PAL) for IEEE 1394 over IEEE 802.11e\nWorking draft Revision 0.71, September 2003.","C. Bae, J. Yoo, K. Kang, Y. Choe, J. Lee, \"Home Server for Home Digital\nService Environments\", Consumer Electronics, 2003. ICCE. 2003 IEEE\nInternational Conference on, pp.382-383, June 2003.\n[10]CEIIEC 61883-4 Consumer audio/video equipment - Digital interface-\nPart 4: MPEG2-TS data transmission.\n[11] CEIIEC 61883-1 Consumer audio/video equipment - Digital interface-\nPart 1: General.\n[12]UPnP QoS Architecture:0.01, March 2003.\n[13] C. S. Claude,\"Practical Analysis for Reservoir Uncertainty. In AAPG \n(American Association of Petroleum Geologists) Conference and Exhibition, \nSeptember 21-24, Barcelona, Spain. (2003) \n[14] K. Derguini,\"Applications Sédimentologiques des Diagraphies,\" in The \nAlgerian Geology Journal. pp 1-29. (1995) \n[15] C. Dreyfus, et al.,\"Réseaux de neurones. Méthodologie et applications,\" \nin Eyrolles editions, Paris. (2002) \n[16] D. Frayssinet,\"Utilisation des réseaux de neurones en traitement des \ndonnées de diagraphies: prédiction et reconstitution de faciès lithologiques,\" \nMaster thesis. National conservatory of arts and professions C.N.A.M. Paris \nV. (2000) \n[17] T. D. Gedeon, H. Kuo, and P. M. Wong,\"Rule Extraction Using Fuzzy \nClustering for a Sedimentary Rock Data Set,\" in International Journal of \nFuzzy Systems, Vol. 4, No. 1, pp 600-605. (2002) \n[18] S. Gottlib-Zeh, L. Briqueu, and A. Veillerette,\"Indexed Self-Organization\nMap: a new calibration system for a geological interpretation of logs,\" \nProceedings of IAMG'99, VI, pp 183-188,. Lippard, Naess and Sinding- Larsen Editons Norway. (1999)"]}