The Geoloy Of Wahau Coal Field, East Kalimantan

(2005)INDONESIAN COAL RESOURCES AND RESERVES (2005)(Continue)NoISLANDCALORYQUALITYCRITERIARESOURCES( M Ton)RESERVES1. JAWA2. SUMATERA3. KALIMANTAN4. SULAWESI5. MALUKULow - Medium < 5100 - 6100 19,24 0,00High - Very High 6100 - >7100 2,97 0,00Low - Medium < 5100 - 6100 26.872,5 2.636,62High - Very High 6100 - 7100 1.780,66 134,11Low - Medium < 5100 - 6100 25.375,69 2.769,01High - Very High 6100 - 7100 6.844,44 1.219,1Low - Medium < 5100 - 6100 218,42 0,06High - Very High 6100 - 7100 14,68 0,00Low < 5100 2,13 0,006. PAPUALow - Medium < 5100 - 6100 120,35 0,00High - Very High 6100 - 7100 30,91 0,00TOTAL 61.273,99 6.758,904

KALIMANTAN COAL RESOURCES( Based on Calorific Value )25,00020,00023,614.40LowCaloryM Tonnes15,00010,0006,213.60MediumCalory5,0001,761.30630.90HighCalory0LowCaloryMediumCaloryHighCaloryVeryHighCaloryVeryHighCalory6

Coal Basin in KALIMANTANWAHAUCOAL FIELD7

‣ Kutai Basin is the biggest anddeepest basin in Indonesia,very economic, oil gas and coalproducing sequences.‣ Coal Bearing Formation : Ayau,Wahau and BalikpapanFormation.KUTAI BASIN8

GEOLOGY• Basin Setting : back arch basin• Influenced by sea floor spreading atMakassar strait• Stratigraphy of Kutai Basin mostlydefine from oil exploration data9

STRUCTURE GEOLOGYKUTAI-BARITOBARITO-ASAM-ASAM BASIN10

STRATIGRAPHY OF EAST KALIMANTAN BASINS11

THE MORFOLOGY OF WAHAU COALFIELDN12

STRATIGRAPHY OF WAHAU COALFIELDAGEFORMATIONDESCRIPTIONQUARTERNARYHOLOCENEALLUVIAL( Qa )Consists of the older rock reworksand mudstone.PLIOCENEMIOCENELATEMIDDLEBALIKPAPAN( Tmbp )Consists of quartz sandstoneinterbedded of claystone, siltstone,shale, limestone and coalTERTIARYOLIGOCENEEARLYLATEMIDDLEEARLYWAHAU( Tomw )Consists of interbedded of ofclaystone, quartz sandstone, clayeysandstone and coal intercalationslimestone at the bottom of formation.EOCENELATEBATUAYAU( Tea )Consists of sandstone mudstone,and small amount of limestone. Coaland carbonaceous clay found insome arean.13

S .SSe n. S.i uyS . MMa waarhrs aap uhL ob an g.iPSngSiS .D uSr iB.a nangS .A pa kS .M ahr aS .Gang. T ugs oo n gS .n gSL un ukS . LuS .au nLG o.Sd u kd an ga. MarSha ka kS . A sk uB eS .S .S .B aL iy aS .mkK ekP aS .l in ja uS.Leesngg ak nJ oS .. BuSi hs a ngHul ue ul eo.Ge bSi me lSS .NgS.J.Ng enkouo airiKn. D aSanS .Da n K anS .S .. Ke l in j auS .KK e li nuj aS . Pa si rp u tS . S a k aH u lS . LGema BaruMuara DunLong NahTeluk BaruS . Te m a ni n gTemaning Barur B eS . K a.Ma h aS . S o n g l e nS . G e n gS .T e ngTmbpNH - 09BLOK 1TmbpJ o rNH - 07TomaNH - 02NH - 03TomaNH - 05NH - 04G ENH - 08NH - 06TmbpNH - 10NH - 01D DLong TesakJFBAABTeaCTeaCDD38°CLT 34CS . T i n j a uS . L o n g J oBLOK 2TmbpS . T i n j a uTmbpTmbpTmbpTeaS .TeaQaQae l i nj a un gBW-04BW-06BAanTha.mSerahts ea lKS ..raoP.erSSMSa haknn t i amamI.S . B eSP.asirPutH uil uha no rNS .S . S o k a K i r iS . S o k a K a n a nL o a B e t u n gS . T e l e nS . B e k i k i n gBaturediS . K a t a kJukayakS . L i u kMuaramarahMarahaloqMarahkenyahS . N a n g a K e c i lS . N a n g a B e s a ro n gS . LLong NoranMuarapantunS . L o n g k o lRantaupan jangBMH-9BMH-8QalBMH-5BMH-7BMH-6BMH-4BMH-3QalBMH-2BMH-1Long SegarKUTAIMuarawahaua n gS . NS . G e p uS . Te m a n ij a uBLOCKMUARA WAHAULE-03BLOCKLONG LE’ESLE-02LE-04LE-01LE-05LE-06LE-07LE-09TeaLE-08LE-10J o rTmbpTeaS . T i n j a uS . L o n g J oTeaTmbpi n gm a n i n ge m a nS . T eS . TTeaQaQaQalTomwQalTomwBLOCKLONG NAHQalTomwBLOCKMARAH HALOQ14

COAL SEAM DATABLOCK FORMATION NUMBEROF SEAMTHICKNESS( m )DIP( O )MUARA WAHAUWAHAU 6 1.5 – 45.00 4 O - 15 OMARAH HALOQWAHAU 4 1.70 – 26.804 O - 65 OLONG LE’ESESBALIK PAPANWAHAUBATU AYAU4332.50 - 22.601.00 - 18.801.00 - 14.7010 O - 20 O7 O - 20 O5 O - 20 OLONG NAHBALIKPAPANBATU AYAU2214.80 - 18.201.20 - 8.105 O - 21 O30 O - 45 O15

BORE HOLE CORRELATION OF BLOCK LONG LE’ES16

BORE HOLE CORRELATION OF BLOCK MARAH HALOQ17

COAL RESOURCES OF WAHAU COALFIELDBLOCKNUMBEROF SEAMCOAL RESOURCES /TONNES( 100 m below from surface)WAHAU 6 4,385,000,000MARAH HALOQ 4 543,900,000LONG LE’ESES 10 1,403,000,000LONG NAH 4 424,400,000TOTAL 6,756,300,00018

COAL QUALITY BY FORMATION (ar/adb(ar/adb)FORMATION FM %TM%IM%VM%FC%ASH%St%SGCVCal/grHGIBATUAYAU34,8561,6944,5065,389,6414,7937,6344,1835,0240,002,269,390,150,351,381,409510056206049,35 55,64 11,94 40,61 37,55 6,06 0,30 1,30 5440 60WAHAU19,1251,8726,4056,679,0012,5033,6450,7630,2940,252,2812,400,110,451,381,554870563541-7636,73 45,16 11,46 44,89 36,97 5,33 0,17 1,42 5380 53BALIKPAPAN39,9049,3947,4953,3510,0615,0446,2048,1636,9037,723,435,210,130,151,361,435245566547-6745,64 51,31 11,84 47,28 37,49 4,19 0,14 1,40 5540 6119

COAL ULTIMATE ANALYSISELEMENBT. AYAUFORMATIONWAHAUB. PAPANC (%) 70.10 69,90 70,70H (%) 4,90 5,00 5,20N (%) 0,77 0,95 0,91S (%) 0,43 0,22 0,12O (%) 23,90 23,90 23,7020

POSSIBLE TRANSPORTATION AND PORT21

Positive side / Strength• Clean Coal• Huge Resources• No need to carry out preliminary survey22

Possible Constrain / Weakness• Transportation and logistic• Road : distance, capital cost for roaddevelopment, trucks, number of vehicles,operation cost, safety.• River : distance, capital cost for barge, size andbarge needed, operational cost, possibility tobuilt stockpiles• Train : cost, long waiting time• Other : possibility of unofficialy tax• Surety of land-right23

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