Pengaruh Eksplorasi Migasdi Cekungan Banggai

Terhadap Area Perbatasan NKRI

oleh :

Sri HartantoExploration JOB-PMTS

Outline

• Lokasi Cekuungan Banggai terhadap Regional

• Kondisi Geologi Sulawesi dan Cekungan Banggai

• Kehadiran HC di Cekungan Banggai

• Sejarah Eksplorasi di Cekungan Banggai

• Petroleum System di Cekungan Banggai

• Play, Field dan Prospect di JOB Tomori

• Status Lapangan Migas di JOB Tomori

• JOB Tomori terhadap Perbatasan NKRI

Lokasi Cekungan Banggai

Geologi Sulawesi

W

E

• The Western Sulawesi Province represents a continental marginsegment (van Leeuwen et al. 2007). It has a metamorphic basementthat includes theMalino and PaluMetamorphic Complexes.

• The Northern Sulawesi Province comprises a dominantly tholeiiticTertiary volcanic arc built on Eocene oceanic crust (Taylor & vanLeeuwen 1980; van Leeuwen & Muhardjo 2005). Volcanism wasdriven by the northward subduction of Indian Ocean lithospherebeneath the North Arm (Hall 1996, 2002; Rangin et al. 1997).

• Central Sulawesi and parts of the SE arm of Sulawesi are composedof sheared metamorphic rocks and in the east a highly tectonisedmelange complex is present, together comprising the CentralSulawesi metamorphic belt (Sukamto, 1975; Hamilton, 1979;Parkinson, 1991; Parkinson, 1998).

• The East Sulawesi Ophiolite comprises a sequence of dunite,lherzolites and harzburgites, ultramafic cumulates, layered gabbros,isotropic gabbros, sheeted dykes and basaltic pillows and lavas (e.g.Simandjuntak 1986; Parkinson 1991, 1998).

• Micro-continental Fragments of Banggai Sula and Tukang Besi,overlain by Mesozoic to Cenozoic clastic and carbonate sediment(Garrard et al. 1988; Supandjono & Haryono 1993; Surono &Sukarna 1993).

(Simanjuntak, 1996)

Geomorfology Lengan Timur Sulawesi

Luwuk

Rata

MATINDOK BLOCK

Pandauke

Ampana

PagimanaBunta

Batui

Pholbud, ET AL 2012

Physiography of East Arm Sulawesi candivided in three units (Rusmana 1997;Sutardji 2006) :

1. Lowland unit around the coast withelevation 0-50 m above sea level.This lowland unit spread from theBulaemo Peninsula in northeast toPoh Bay in the southwest. This unit isdominated by quarter sedimentaryrocks with deposition environmentstart from fluvial to shallowmarine.

2. Hilly unit with elevation ranging from50 to 500 m above sea level. This unitspread from Batui Hills in thenortheast to Batulumpu Hills insouthwest. This unit is dominatedmetamorphic rock, basaltic igneousrocks and carbonate rocks.

3. Mountain unit with elevation morethan 500 m above sea level. This unitspread from Ujung Api mountain ineastern to Kolokolo Bay and LemoroMountain in western. This unitdominated by obducted ophiolite.

A

B

Kadarusman, 2004

Oil Seep

(Kadarusman, 2001)

Kehadiran HC di Cekungan BanggaiStratigraphy

Sejarah Eksplorasi & Sebaran Data

Mentawa-1

Donggi-1

Minahaki-1

Tiaka-1Kalomba-1

Dongkala-1

Sinorang-1

Exploration Activity has reached 36 years since the first 2D offshore seismic survey was run in 1981 and Mentawa-1 Gas Discovery well, was drilled in 1983

Tolo-1

Grupa-1

Senoro-1

Cendanapura-1

Maleo-1

Maleo Besar-1

Rangkong-1

Boba-1

Kenari Raja-1Matindok-1

2D Seismic

Offshore Toili

3D Seismic

Onshore Senoro

Kurniawan, 2017

Total 21 Well

12 Discovery Well

9 Dry Well

Success Ratio In Exploration 57%

Tektonik Stratigrafi Cekungan BanggaiStratigraphic record in Banggai Basinis strongly related to Tectonic even inSula Spurs. Detail tectonostratigraphicin Banggai basin :

• Rifting : Pre-break up sekuen fromTriassic Carbonate Tokala Fm, Syn-breakup from Late Triassic ArenitRed Bed Fm, Post-breakup sekuenfrom Middle-Late JurrasicSilisiclastic Bobong and Buya Fm,Late Creataceous sekuen pelagicsediment Tanamu Fm.

• Syn-Drif : Late Eosen silisiclasticsekuen Lalengan Fm, PassiveMargin Miocen Carbonate SekuenSalodik Group (Tomori Fm,Interformational shale MatindokFm and Minahaki Fm).

• Collision : Late Pliocene Molassessilisiclastic (sulawesi group: KintomFm, Kalomba Fm and Biak Fm).

• Post-Collision : Pleistocene-RecentTransgressive sediment (alluvial &limestone Luwuk Fm).

After Kadarusman,2004

Pertamina BPKA,1994

Mentawa-1

Donggi-1

Minahaki-1

Kalomba-1

Dongkala-1

Sinorang-1

Tolo-1

Grupa-1

Senoro-1

Cendanapura-1

Maleo-1

Maleo Besar-1

Rangkong-1

Boba-1

Kenari Raja-1Matindok-1

Tiaka-1

Source Rock (Kitchen Potential)

A

B

B

A

C

D

C D

TOLO DEEP

Onset of Potential Kitchen Map at Banggai Basin (Modified GRDC, 2002)

Present Day Migration Pathway

f1f2

f3

f4

f6

f7

f8

f9

f10

f12

f13

f15

f16

f17

f20

f21f22

f23

f24

f25

f27

f28

f30

f31

f32

f33

f34

f35

f18

f36

PETA STRUKTUR MIOCENE KARBONAT

C

D

DC

Batui Thrust Kitchen, already proven (Tomori fm & Matindok fm mature at Pliocene).

Tolo deep potential kitchen. Possibility from Jurassic Shale Buya Fm (Mesozoic

Sediment).

SR from Batui thrust Kitchen (Proven), Tomori thrust as migration carrier (based on R. P. Koesoemadinata Review, 2005).

Migration Distance approximately <20 km from Collision Border.

Miocene Carbonate, good porosity (Mentawa Fm build-up, Minahaki Fm, Tomori Fm).

Sandstone Sulawesi Group.

Imbricated Thrust Structure Wrench Related Structure Mentawa Fm build up carbonate

Intraformational Seal Kintom Shale

Source Rock

Migration

Reservoir

Trap

Cap Rock/ Seal

Petroleum System

Proven Play di Cekungan Banggai

Sebaran Struktur HC di Cekungan Banggai

Mantawa Member :Member of Minahaki Fm, Reef Buildup carbonate reservoir, thickness ± 600ft,porosity up to 20%, contains gas with oil rim.

Exploration wells on Mantawa Member:Senoro-1, 2, 4, 5, 7 – 12, Cendanapura-1, 2, Grupa-1, Matindok-1, Anoa Besar-1, Minahaki-1, Sukamaju-1, Donggi-1

Minahaki Formation :Platform Carbonate reservoir, thickness ±800ft, porosity up to 15%, contains oil and gas.

Exploration wells on Minahaki Formation:Senoro-3, 6, Kalomba-1, Matindok-2, Mentawa-1

Tomori Formation :Bioclastic Fracture Platform Carbonate reservoir, thickness ± 970ft, average porosity 5%, average permeability up to 10 mD, fracture dominated reservoir, contains oil and small gas cap.

Exploration wells on Tomori Formation:Tiaka-1 – 4

20 kmN

AA’

SENORO

TIAKA

Well

Oil Discovery

Mantawa/Minahaki

Gas Discovery

Tomori

Workshop PEP-PHE, 2016

Lapangan Migas di JOB Tomori

HANGING WALL ANTICLINAL TRAP

4 WAY DIP CLOSURE

(2004)

Drilling Tiaka-5

Drilling Tiaka-6

Lapangan Minyak Tiaka

Exploration Development

POD Tiaka 2002

Onstream pada tahun 2005

(1981-1984)

Survey Seismik 2D 1981,1982,1983

(1985-1989)

Drill Exp. Well by UTP Tiaka-1, Tiaka-2, Tiaka-3,

Tiaka-4

Seismic 2D 1986, 1988

POD Tiaka Revision Approved. (2004)

(2007-2010)

Drilling Tiaka-7 ST2

Drilling Tiaka-8, Tiaka-9, Tiaka-10, Survey Seismik 2D

POFD Tiaka Approved. (2010)

(2010-2012)

Drilling Tiaka-11, 12, dan 13

Production

Cadangan lebih dari perkiraan

Shut In pada tahun 2016

Evaluasi for Reactivation

(2001-2009)

Drilling Senoro-4, 5, 6

Lapangan Gas Senoro

Exploration Development

Senoro Discovery – UT (1994)

PSC JOB PMTS (1997)

(1999-2002)

Drilling Senoro-1,2,3

POD 1 (2005)

Penandatangan GSA denganDSLNG (22 Januari 2009)

POD revisi (2011)

Penandatangan GSA dengan PAU (2012)

Production

Onstream ke DSLNG 2015

Onstream ke PAU 2018

Ringkasan dan Kesimpulan

JOB Tomori dan PEP Matindok merupakan perusahaan MIGAS berproduksi yang beradapada area Sulawesi paling Utara.

Keberadaan JOB Tomori dan PEP Matindok diharapkan menjadi salah satu penyanggaperekonomian terhadap area perbatasan di sekitar Sulawesi danMaluku.

Terima Kasih