Sedimentary Basins of Indonesia

AWANG H. SATYANA BPMIGAS

after Selley (1985)

Demaison and Huizinga (1988

Indonesian Basins (1) The complex geological history of Indonesia has resulted in

over 60 sedimentary basins which are the subject of petroleum exploration today.

Current status : 15 are producing, 9 drilled with discoveries, 14 drilled with no discovery, 22 not yet drilled.

Western Indonesia basins (22) : considered to be maturely explored.

Eastern Indonesia basins (38) : under-explored, 20 not yet drilled, sparse geological knowledge, remoteness to world markets, logistical difficulties, high costs, little or no infrastucture, deep water area.

Awang H. Satyana (2005)

Indonesian Basins (2)

All of the most prolific basins to date are located in Western Indonesia. These include basins of North Sumatra, Central Sumatra, South Sumatra, Sunda-Asri, Northwest Java, East Java, Barito, Kutei, Tarakan, West Natuna, and East Natuna.

In Eastern Indonesia only the Salawati Basin is considered to be mature.

Eastern Indonesia has large-giant hydrocarbon potential at Mesozoic and Paleozoic objectives, as shown by discoveries at Tangguh complex, Oseil, Abadi, NW shelf of Australia, and Central Range of PNG.

Awang H. Satyana (2005)

Sedimentary basins of the Indonesian region

Hardy et al. (1997)

Daly et al. (1991)

Bathymetric map of the Indonesian region Pattinama and Samuel (1992)

Working Status of Indonesias Sedimentary Basins

PRODUCING (15 0R 25 %)

DRILLED, WITH DISCOVERIES OR SHOWS (9 OR 15 %)

DRILLED, NO DISCOVERIES (14 OR 23 %)

UNDRILLED (22 OR 37 %)

Sumantri and Sjahbuddin (1994) Sujanto (1997), Netherwood (2000)

Simplified map of Indonesias basins and their exploration status

Western22 basins( 36.7% )

Eastern38 basins(63.3%)

Producing (50%)

Discoveries (non Producing 18%)

Drilled (No Discoveries 18%)

Undrilled (14%)

Producing (11%)

Discoveries (non Producing 16%)

Drilled (No Discoveries 23%)

Undrilled (50%)

KAJIAN 2003

INDONESIABASINS

(60 BASINS)

BASIN STATUS & ASSETS(STATUS 0CT. 2004)

D

I

N

A

S

S

T

U

D

I

E

K

S

&

E

V

A

L

-

J

I

A

N

B

A

N

G

498 Prospects (48,370 MMBO + 139,931 BCFG + 21,157 MMBC 130 Prospects ( 10.832 MMBO + 145.684 BCFG + 9123 MMBC

OIL RESERVE (1P) : 4003.9 MMSTBOIL RESERVE (1P) : 141.8 MMSTB

Pertamina and Beicip (1992)

Sedimentary basins of Indonesia

mod. from Pertamina and Beicip (1982, 1985)

INDONESIA BASIN TYPES

10S

05S

00

05N

100 E 110E 120 E 130 E 140 E

Ek s BPMIGAS Mei. 2005

N

0 300 600Km

INDONESIA PETROLEUM WORKING AREA (2005)

D:\data \2005\apr

BADAN PELAKSANA KEGIATAN USAHA HULU MINYAK DAN GAS BUMI

172 WK (113 PSC, 14 JOB, 45 TAC), 92 OPERATOR

172 WK (45 PRODUKSI, 36 REHABILITASI PRODUKSI, 5 PENGEMBANGAN, 86 EKSPLORASI)

172 WK (91 DARAT, 55 LAUT, 26 DARAT & LAUT)