Dear Colleagues, 
This is to advise you for upcoming FESI Dinner Talk.
DATE: Wednesday, 14th May, 2008
TIME: 05.00 pm - onwards
VENUE: Mutiara 1 room, 2nd Floor, Ritz Carlton Hotel, Jakarta,
Jl. Lingkar Mega Kuningan Kav E. 1.1 No. 1
Mega Kuningan, Jakarta 12590, Indonesia
SUBJECT: "Petrophysics of Problematic Reservoirs" 
SPEAKER: Paul F Worthington - Gaffney, Cline & Associates
COST: 
FESI Member/Professional Rp. 300.000,-
Non Member Rp. 350.000,-
Students Rp. 30.000,-
All Walk-ins (assuming availability) Rp. 350.000,- 

Please address your registration to attend to:
Romanna Tobing
Mobile: 0815 9975321 
E-mail: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
OR
Athur Lasmaria
Mobile: 0819 4821528
E-mail: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
Please do register now! Early registration is necessary in order to secure your 
place on this talk. 
Thank you and best regards, 
FESI
Petrophysics of Problematic Reservoirs
Paul F Worthington
Gaffney, Cline & Associates
A problematic reservoir is defined as one whose character does not satisfy 
standard textbook assumptions. In these cases, the key to successful 
petrophysical evaluation is to recognise the causes of departures from textbook 
assumptions and to respond with appropriate data acquisition and log-analysis 
practices. This presentation examines some of the most common types of 
problematic reservoir from a petrophysical perspective and identifies a 
technical response for each. Examples include reservoirs that: are laminated; 
have low intergranular permeability; contain fresh formation waters; are silty; 
have a multi-modal pore system; and/or are shaly. Following the successful log 
evaluation of porosity and hydrocarbon saturation, the greatest source of 
petrophysical uncertainty in hydrocarbon volumetrics remains the quantification 
of net reservoir and net pay. Avenues are identified for improving this process 
based on data-driven indicators and taking due account of reservoir depletion 
mechanism.
Paul F. Worthington is a Principal Adviser with Gaffney, Cline & Associates, 
where his key interests are integrated reservoir studies for equity 
redetermination, reserve estimation and reservoir management. Previously he 
spent 13 years with BP, mostly as Head of Formation Evaluation at the BP 
Research Centre in Sunbury-on-Thames, England. His degrees include a Ph.D. and 
a higher doctorate (D.Eng.), both from the University of Birmingham, U.K., and 
he has published over 80 technical papers in the field of engineering 
geoscience. From 1986-1992 he served as Chairman of the Downhole Measurements 
Panel of the international Ocean Drilling Program. He currently holds a 
visiting professorship in Petroleum Geoscience and Engineering at Imperial 
College, University of London. Paul has served as President, VP Technology, VP 
Publications and Distinguished Lecturer of SPWLA, and he has co-chaired three 
SPWLA Topical Conferences. He is a former Editor of Petrophysics and is 
currently a Co-editor of Petroleum Geoscience. Paul is a Chartered Geologist 
and Chartered Engineer in the United Kingdom and a Fellow of the U.K.'s Energy 
Institute.



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