Slide 1
HAGI-IAGI JOINT CONVENTION MEDAN 2013
Source Rock Distribution at Jabung block, Jambi sub-basin, South
Sumatra basin based on well correlation
Dian LarasatiEddy SubrotoHendra Niko SaputraBeiruny
Syam1)2)3)3)PT Pertamina (Persero)Earth Science & Technology
Faculty, Institute Of Technology Bandung PetroChina International
Jabung Ltd
HAGI-IAGI JOINT CONVENTION MEDAN 2013PRESENTATION
OUTLINEINTRODUCTIONDATA & METHODSOURCE ROCK
CHARACTERISTICSOURCE ROCK FACIESSOURCE ROCK DISTRIBUTIONSUMMARY
HAGI-IAGI JOINT CONVENTION MEDAN 2013
PRESENTATION OUTLINEINTRODUCTIONDATA & METHODSOURCE ROCK
CHARACTERISTICSOURCE ROCK FACIESSOURCE ROCK DISTRIBUTIONSUMMARY
HAGI-IAGI JOINT CONVENTION MEDAN 2013JAMBI SUB BASIN
OVERVIEW
JABUNG WORKING AREA:
LOCATED IN THE NORTHERN EDGE OF SSB THERE ARE TWO MAIN DEEP
DEVELOPED IN JABUNG AREA (BETARA & GERAGAI DEEP)
HAGI-IAGI JOINT CONVENTION MEDAN 2013
-) Jabung block located on edge of Jambi Sub-basin-) Betara
& Geragai developed as deep in Jabung block area-) Source rock
distribution is still question mark around Jabung block
BACKGROUND
HAGI-IAGI JOINT CONVENTION MEDAN 2013OBJECTIVES:
-) CHARACTERISTIC OF SOURCE ROCKS -) DISTRIBUTION OF SOURCE
ROCKS
HAGI-IAGI JOINT CONVENTION MEDAN 2013GENERALIZED
STRATIGRAPHY
MEFGUFBRFUTAFLTAFBSMNT
Geragai deep
HAGI-IAGI JOINT CONVENTION MEDAN 2013PRESENTATION
OUTLINEINTRODUCTIONDATA & METHODSOURCE ROCK
CHARACTERISTICSOURCE ROCK FACIESSOURCE ROCK DISTRIBUTIONSUMMARY
HAGI-IAGI JOINT CONVENTION MEDAN 2013WORKFLOW STUDYData
GatheringGeochemistry data(laboratory analysis)Wireline dataSeismic
DataBiomarkerMaturity QualityQuantityPorosity dataResistivity
dataWell to Seismic data
TOC data(from wireline log)
DepositionalenvironmentSource RockCharacteristic
Geochemical log
Well To WellCorrelation using integrated dataDepth structure
Map
Source Rock Distribution
HAGI-IAGI JOINT CONVENTION MEDAN 2013DATA & METHODCUTTING
DATA FROM 4 WELLS2 SIDE WALL CORE SAMPELS DATA FROM WELLS
HAGI-IAGI JOINT CONVENTION MEDAN 2013INTRODUCTIONDATA &
METHODSOURCE ROCK CHARACTERISTICSOURCE ROCK FACIESSOURCE ROCK
DISTRIBUTIONSUMMARYPRESENTATION OUTLINE
HAGI-IAGI JOINT CONVENTION MEDAN 2013SOURCE ROCK
CHARACTERISTIC
The TOC containt from 1-5 % average Plot TOC vs HI in Geragai
Deep & Betara projected deep showing Gumai, UTAF, and LTAF
having good potential as a good source rockThe source rock quality
from good until very good with slightly excelent
HAGI-IAGI JOINT CONVENTION MEDAN 2013SOURCE ROCK MATURITY
Plotted HI vs Tmax from betara & geragai deep Gumai, upper
talang akar, & Lower Talang akar having kerogen type-2 &
type-3
HAGI-IAGI JOINT CONVENTION MEDAN 2013
immature
Early maturePeak oil GenerationLate Oil GenerationWet Gas
GenerationOvermature (Dry gas)
: Geragai deep trend: Betara deep trendMaturity level in Geragai
& Betara deepBetara deep:Graphic Ro Vs Depth are showing that
possible oil window at 6500 that occured on Upper talang Akar &
lower Talang akar Formation
Gas window possible occurred at 8000 that situated in Lower
Talang akar Formation
Geragai deep :Peak oil generation was begin at 7600 feet or
occured on Upper Talang akar Formation
Gas window started at 8500 feet that situated at lower Talang
Akar Fm
HAGI-IAGI JOINT CONVENTION MEDAN 2013Source Rock Facies
: Geragai Deep
: Betara DeepThe sampels analysis come from LTAF, UTAF, and
slightly GUFBased on biomarker plot data, generally the
environtments tends to be eustuarine or shallow lacustrine
HAGI-IAGI JOINT CONVENTION MEDAN 2013
Geochemical log type from Geragai Deep
GUFUTAFLTAFABFMEF Geochemical sampel from geragai deep have good
till excelent organic content The maturity reached mature level
HAGI-IAGI JOINT CONVENTION MEDAN 2013
Geochemical log type from Betara Deep
source rock in Betara deep have fair to good quality the
maturity level reached early mature
HAGI-IAGI JOINT CONVENTION MEDAN 2013
source rock distribute from Geragai deep going to south east
HAGI-IAGI JOINT CONVENTION MEDAN 2013
CROSS SECTION THROUGHT BETARA DEEP
AB- TOC Content higher on Betara Deep
HAGI-IAGI JOINT CONVENTION MEDAN 2013CONCLUSIONSThe
Characteristic of source rock in Betara & Geragai deep came
from Lower Talang akar Fm, Upper Talang akar Fm & possible
Gumai Fm with kerogen type-2 & 3 was developed as proven source
rock in both deep. Those source rock have been reached maturity
level.
Source rock distribution around geragai deep & betara deep
with occured generate hydrocarbon on 7600 feet depth in geragai
deep and 6500 feet in Betara deep
HAGI-IAGI JOINT CONVENTION MEDAN 2013
Xie Xie
HAGI-IAGI JOINT CONVENTION MEDAN 2013
LOG to Laboratory calibration
HAGI-IAGI JOINT CONVENTION MEDAN 2013Top BSMNT
REGIONAL CROSS SECTION FROM GERAGAI DEEPNWSE
Top LTAFTop UTAF
Oil windowGas window
source rock in Betara deep have fair to good quality the
maturity level reached early mature
HAGI-IAGI JOINT CONVENTION MEDAN 2013
