Paulo Johann is currently the reservoir geophysics manager for Petrobras, based in Rio de Janeiro. Paulo has more than 27 years of experience in the petroleum industry. He graduated with a degree in geology in 1980 from UNISINOS University, Brazil. He started with Petrobras in 1981. Paulo received DEA and PhD degrees in reservoir geophysics from Paris VI University, France in 1994 and 1997. His career has encompassed geophysical acquisition, geophysical interpretation, and reservoir geophysics. Since 1985 he has been involved with an internal Petrobras training program for new geophysicists and geologists. Paulo also gives lectures at Brazilian universities. He was appointed improved oil recovery geophysical technology research coordinator for Petrobras in 2001. Paulo became active in the Brazilian Geophysical Society (SBGf) in 1997 where he served in many positions and was vice president from 2003 to 2005. He currently serves the Society of Exploration Geophysicists as a member of the SEG Council, representative of Latin America Region. He has published and presented several technical papers at SEG, EAGE, SPE, OTC, and SBGf. Recently, his paper "4D Seismic in Brazil: Experiences in Reservoir Monitoring" was selected as one of the best papers at 2007 Deep Water West Africa Conference, Luanda, Angola.
2008 SEG Honorary Lecturer, Latin America
Reservoir geophysics: Characterization and monitoring offshore Brazil
The use of reservoir geophysics and time-lapse (4D) technology enables the oil industry to improve its E&P activities related to reservoir management. In addition to updating the 3D geologic and flow models, new 4D seismic information helps not only to enhance reservoir characterization but also to reveal potential exploratory upsides and to monitor field production. This presentation aims to describe reservoir seismic and 4D seismic technology experiences in Brazil during the last 12 years of studies and applications in Brazilian sedimentary basin and petroleum fields. Reservoir seismic characterization and 4D experiences can be divided into many phases: (1) technical and economic feasibility studies; (2) acquisition designed for reservoir characterization and/or monitoring; (3) reservoir seismic processing; (4) special processing oriented to seismic interpretation (inversion, facies, reservoir properties estimates, etc.); (5) reservoir characterization and monitoring seismic interpretation; (6) updating the geologic model with seismic interpretation; (7) integrated seismic interpretation for flow modeling and history matching; and (8) drilling in-fill D&P wells guided by reservoir seismic interpretation. For some reservoir challenges, it is very important to incorporate applied research projects – IOR strategic research projects help us understand complex cases. This presentation will feature an important case history of a heavy oil, deepwater 4D seismic survey project that was acquired over 1,520 km2 in a heavily obstructed oilfield production area.