Dear Distinguished Professionals,
TODAY IS THE LATEST DAY TO REGISTER THE LUNCHEON TALK UNTIL 12.00 WWIB.
PLEASE REGISTER NOW!!!!
IKATAN AHLI GEOLOGI INDONESIA (IAGI)
and
HIMPUNAN AHLI GEOFISIKA INDONESIA (HAGI)
LUNCHEON TALK PROFESSIONAL DIVISION
will organize the following excellent Luncheon Talk
for you:
DATE:
Wednesday, 28 August 2002
TIME :
12.00 AM 14.00 PM
VENUE :
Hotel Sahid Jaya
(Candi Dieng Room, 2nd floor)
Jl. Jendral Sudirman
Jakarta
TITLE :
METHOD TO PREDICT FLUID COMPOSITION FROM SEISMIC: SPECIFIC GRAVITY CUBE
BY :
Franciscus Boetje Sinartio
(Senior Project Geoscientist , Jason Geosystems Indonesia)
ABSTRACT
History of oil and gas exploration and development has been through several
important stages. It is all started with surface seeps, then people start
looking for anticline from the surface geology. Advancement in early
geophysical methodology made a big jump in reserve discovery. Gravity and
seismic methods are two important tools used as indirect
measurement. Since then, only few new methodologies used for hydrocarbon
exploration and development. Most of the scientific effort is done on
enhancing seismic reflection methods. Several milestone in seismic
reflection methods that resulting in big discoveries has been experienced,
namely: stacking, migration, AVO, seismic stratigraphy, 3 D, seismic
attributes, inversion, image processing, 4D, 3C, anisotropy, etc. In
general, the advancements can be categorized as aid to understand:
structure, stratigraphy, and reservoir characters.
Right now, we are about to see another important milestone in hydrocarbon
exploration and exploitation, it is the era of fluid characterization.
Knowing the reservoir rocks is a must in field development, and knowing the
fluid composition is going to be a need for enhanced recovery in a
field. Especially in fields that contaminated with unneeded and
un-commercial fluids such as CO2 or H2S.
Prediction of wide range of gas composition in a reservoir is not
acceptable anymore, so there is no more reason that somebody can not tell
(using the seismic data) whether the reservoir contains 10 % of gas or 90 %
of gas.
Furthermore, knowledge of fluid composition can lead into a better
prediction of pressure, hydrocarbon saturation and eventually better
production history match and production prediction in reservoir simulation.
Real measurement of the fluid composition can be acquired through
production test in wells. This measurement most of the time is accurate
enough to understand the reservoir and its fluids at that
location. Therefore, more well test needed in one field.
However, most of the time the wells are sparsely distributed, therefore,
seismic data is needed to show lateral variation of reservoir and its fluid
contents.
There have been several methods used to predict the fluid composition,
mostly deriving empirical formula from crossplot. However, crossplot can be
misleading if the average value is much bigger than its range. In this
case the regression coefficient (r2) can be close to one even though the
variation is still big.
In this talk, the speaker will show how to predict the fluid composition by
breaking down the reservoir properties into fluid properties using existing
formula combined with simple statistics and arithmetic, without deriving
empirical formula from crossplot. The forward modeling is presented first
to show that variation in fluid composition shows variation in measurement
of seismic data. Then, inversion modeling approached is entertained to
the audience.
In the talks, the derivation of formula will be limited to
minimum, but the concept of fluid composition extraction is still in
tact. CO2 case is taken as an example for explaining the method.
BIOGRAPHY
Franciscus Sinartio started his career as a geophysicist at ARCO Indonesia
in 1987, he then continued his quest in geophysical world at VICO Indonesia
(1991-1998), Canadian Petroleum (1998), Repsol-YPF-Maxus (1998-2002), Jason
Geosystems (2002-now). Right now, he is a Senior Project Geoscientist for
Jason Geosystems Indonesia.
His work experience and interest includes: seismic acquisition,
seismic processing, seismic interpretation, seismic modeling and special
project of combination of the above fields as well as combinations of
multidiscipline field such as depositional setting, structural geology,
petrophysics, and reservoir engineering.
During his 15 years career in the oil industries, he is an active
members of SEG (Society of Exploration Geophysicist), HAGI (Himpunan Ahli
Geofisika Indonesia) and IPA (Indonesia Petroleum Association). He is also
a member of IAGI (Ikatan Ahli Geology Indonesia), FOSI (Forum of
Sedimentologists Indonesia) and FOGRI (Forum Geofisika Reservoir
Indonesia). He is now, the chairman of Jakarta chapter of HAGI.
Franciscus got his BS degree from Colorado School of Mines in 1986
in Geophysics, and his MS degree from Institut Teknologi Bandung in 1991 in
Energy and Mineral Resources Management.
Meal Cost: Rp.100.000 for member, Rp.125.000 for non member IAGI, HAGI, IATMI
Reservation and cancellation will be accepted until 12:00 WWIB at Tuesday,
27 August 2002. Please contact : Bevi/Lupi Telp/Fax : 515.9483/9342,
515.9370 email : [EMAIL PROTECTED]
or Ijul/Alfa Telp/Fax : (62-21) 8370.2848, 8370.2577 e-mail :
[EMAIL PROTECTED]
