-----Original Message----- From: Romanna Tobing [mailto:[EMAIL PROTECTED] Sent: 12 Oktober 2005 9:49 To: Romanna Tobing Subject: Formation Evaluation Society of Indonesia (FESI) Talk, 24 October 2005, Crowne Plaza Hotel, Jakarta Importance: High Dear Colleagues, The Formation Evaluation Society of Indonesia (FESI) takes pleasure in announcing our technical presentation and invites you to join with us for a talk on: "Formation Evaluation in Heavy Oil" by Tom Zalan, Caltex Pacific Indonesia, Duri, Sumatra The Talk is scheduled at 04:00 pm (registration) on Monday, October 24, 2005 at Crowne Plaza Hotel, Intan - Mirah Room, Jl. Gatot Subroto Kav. 2 -3, Jakarta 12930, Tel. 526 8833. A 'Buka Puasa' buffet will be served. Charges: FESI Member/Professional Rp. 145.000,- Non Member Rp. 175.000,- Students Rp. 30.000,- All Walk-ins (assuming availability) Rp. 175.000,- Please address your registration to attend to: Romanna Tobing FESI Administrator Tel: (62-21) 780 1533 Mobile: 0815 9975321 E-mail: [EMAIL PROTECTED] Regards, Romanna Tobing Formation Evaluation in Heavy Oil by Tom Zalan, Caltex Pacific Indonesia, Duri, Sumatra The Duri field is the world's largest steamflood. It was discovered in 1941, first production was brought on line in 1956, and steamflood operations were initiated in 1983. Oil gravity ranges from 17 to 23 API, and oil is highly viscous when cool (> 100 cP @100 degF). Two primary and several secondary producing zones with multiple sands are present. There are unique aspects of Formation Evaluation to consider in both open and cased well analysis in a heavy oil environment. In open hole, Formation Evaluation workflows have been tailored for heavy oil that may be utilized to accurately estimate porosity, permeability, and water saturation, for application in reservoir characterization, reservoir management, and reserves estimates. Also in a heavy oil environment where fluid identification using nuclear magnetic resonance logs is usually hampered by the overlap of T2 relaxation time response between water and heavy oil, new processing techniques have been developed for assessment of free and irreducible water and permeability. In cased hole, time-lapse saturation and temperature profiles are developed from pulsed neutron capture, Carbon/Oxygen, and temperature logs. With the addition of a Carbon/Oxygen log measurement, a three-phase (steam/oil/water) saturation algorithm has recently been applied to estimate remaining oil volume in the presence of steam chests. The time-lapse profiles are then applied to find bypassed oil, estimate remaining reserves, identify depleted zones, and influence steaming strategy. About the speaker Tom Zalan received an AB degree in 1982 from the University of Chicago and a PhD degree in 1988 from the Colorado School of Mines, both in Geophysics. From 1987 to 1991 he worked at Chevron Oil Field Research in La Habra, California, as a research geophysicist, working on cased-hole saturation log problems and on dipole sonic log applications. In 1991 he transferred into operations in Bakersfield, California, where he worked as a Formation Evaluation Specialist, supporting operations in onshore and offshore California fields, including heavy oil operations. In 1999, he moved onto Malongo, Angola, to work as Cased-Hole Formation Evaluation Specialist. Since 2002 he has worked for PT Caltex Pacific Indonesia in the Duri Steamflood. He is headed off to Lagos, Nigeria in early 2006.
