Dear Sir/Madam,
Please join HAGI Luncheon Talk next week, with details are following :
Day & Date : Wednesday, May 19, 2004
Time : 11:45 am
Venue : Sasono Mulyo 2 Room
Hotel Le Meridien Jakarta
Jl. Jend. Sudirman Kav 18-20, Jakarta 100220
Subject : "Time-Lapse Simultaneous AVO Inversion of the Widuri Field,
Offshore Southeast Sumatra : Fugro-Jason Inversion Technology
Application"
Speaker : Robert van Eykenhof (P.T. Abhitech - Fugro-Jason)
Cost : Rp.125.000,-
We appreciate for your assistance to distribute this information within
your organization.
Thank you for your kind attention.
We are looking forward to see all of you next week.
Best Regards,
Hary Setyabudi
Phone : +62(021) 515 9300
Email : [EMAIL PROTECTED]
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Himpunan Ahli Geofisika Indonesia (HAGI) KOMWIL JAKARTA
HAGI (Indonesian Association of Geophysicists) Jakarta Chapter
cordially invites you to a luncheon talk as follows:
TOPICS : "Time-Lapse Simultaneous AVO Inversion of the Widuri
Field, Offshore Southeast Sumatra : Fugro-Jason
Inversion Technology Application"
DATE / TIME : Wednesday, May 19, 2004 / 11:45
VENUE : Hotel Le Meridien Jakarta, Sasono Mulyo 2 Room, Lobby
Level, Jl. Jend. Sudirman Kav 18-20, Jakarta, 10220
SPEAKER : Robert van Eykenhof (P.T. Abithech ? Fugro-Jason)
COST : Rp. 125.000,-
� Reservations and cancellations will be accepted until 15:00 hours on
Tuesday, May 18, 2004 at email: [EMAIL PROTECTED] or fax:
515-9344, or phone 515-9300 (Hary).
� Payment will be done at the Sasono Mulyo 2 Room, and no show will be
charged.
� Members of IAGI, IPA, and IATMI are welcome.
ABSTRACT
TIME-LAPSE SIMULTANEOUS AVO INVERSION OF THE WIDURI FIELD, OFFSHORE
SOUTHEAST SUMATRA : FUGRO-JASON INVERSION TECHNOLOGY APPLICATION
Reservoir characterization of the Widuri field, offshore SE Sumatra, is
complicated by complex lithology and difficulties in predicting changes in
fluid distribution during production. In 2000 a monitor 3D seismic data set
of the Widuri field was acquired and processed to take advantage of seismic
AVO effects. The base line 1991 seismic data set was reprocessed in
parallel. The primary reason for the monitor data set was to observe the
reservoir pressure depletion state around a water-flooding project.
Furthermore there was a need to improve the characterization of the
reservoir sands and to develop a better understanding of the fluid movement
over time. To support AVO based reservoir characterization the base line
and monitor seismic data were processed to 3 partial angle stacks. These
were subsequently inverted to acoustic and shear impedance using a global,
Simultaneous AVO Inversion algorithm. Resultant multi-parameter impedance
based reservoir characterization from well log data and the impedance
inversion results show that sands and coals in the reservoir interval can
now be discriminated. Previously, reliable interpretation of these
lithologies away from well control from poststack seismic data was
infeasible as the acoustic impedance of these lithologies overlap. To
investigate and characterize fluid movement, a novel workflow involving
joint Simultaneous AVO Inversion of baseline and monitor seismic data was
applied. The results from the time-lapse AVO inversion confirm the
hypothesis based on production history analysis that aquifer support comes
from the SouthEast. The same technique is successfully used to map more
specific features related to depletion. As a result of production,
increased water cut was observed at most of the wells. In addition to this,
pressure dropped below bubble point with gas coming out of solution, which
accumulated at structural highs. Both factors influence production and are
potential drilling risks for newly planned wells.
ABOUT THE SPEAKER
Robert van Eykenhof has a Master Degree in Petroleum Engineering and
Geotechnical Engineering from Delft University of Technology, The
Netherlands. He also has more than ten years of oil industry experiences.
He is currently Principal Project Geoscientist for Fugro-Jason in
Indonesia. In his current position, he is carrying out and managing 2D, 3D,
and 4D reservoir characterization projects for fields in Indonesia. His
reservoir characterization experiences include projects for fields in
Algeria, Atlantic Margin, Australia, Italy, Indonesia, Netherlands,
Nigeria, North Sea and Oman. This work involved project setup and
completion at his client sites and the application of "cutting edge"
software to new and innovative studies, including advanced petrophysical
modeling, simultaneous AVA Inversion, and 3D Geostastistical Inversion. His
previous work was in Shell International Exploration & Production BV
Rijswijk, as a research assistant for 3D modeling of estuarine sediments of
Holocene age in North Holland using Cone Penetration Test and borehole
data.
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