Coalmine Methane Under Indian Mining Scenario
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Coalmine Methane Under Indian Mining Scenario CMM under Indian Mining Scenario • In India coal is a reliable energy resource due to limited availability of petroleum and natural gas. • Coal based non-conventional energy is poised to play a major role in India as : 9 It would bridge the gap between demand and availability of conventional energy source 9 International trading scenario in energy sector has been stormy 9 Environmental concerns has given impetus to clean coal technologies. • Under the scenario, Coalbed Methane (CBM) and its subsets like Coal Mine Methane (CMM) and Abandoned Mine Methane (AMM) may find important place in Indian Energy scenario in coming years. CMM under Indian Mining Scenario Development of CBM in India • Out of different sub-sets of Coalbed Methane (CBM), CBM from the deep lying coal deposits (VCBM) has been pursued. • So far 16 Coalbed Methane (VCBM) blocks have been allotted under CBM policy of GoI covering an area of 7807 sq. km and prognosticated CBM resource of 825 BCM. • 10 more blocks have been opened for global bidding. • Several core wells/pilot wells have been drilled in the allotted blocks and are giving encouraging results. • Few operators are planning commercial production from 2007- 08. • The total production potentiality in the allotted blocks is 23 MMSCMD, which is about 10% of the existing Natural Gas demand. CMM under Indian Mining Scenario Coal Mine Methane and Abandoned Mine Methane • Coal Mine Methane (CMM)/ Abandoned Mine Methane (AMM) also subset of CBM is related to mining activities and as per MOU between MoC and MoP&NG, coal producing companies have right of CBM exploitation in their working mines including pre and post mining operations. • CMPDI and BCCL took up a mine related demonstration project for production and utilisation of CBM under UNDP/GEF/GoI funding in Moonidih and Sudamdih mines, BCCL. The aim of the project is to: Acquire exposure in CBM production from virgin area and working mines by drilling from surface and underground Acquire exposure in utilisation technique of extracted CBM. • Drilling of first well in this project has started. CMM under Indian Mining Scenario • Going by industry practice, CMM is recovered from high producing underground mines with fast moving faces. • However, in India focus is on large capacity opencast mines. • Only 15% of the total production of 400mt is from underground mines. • The underground production is coming from B&P mines with limited production capacity. CMM under Indian Mining Scenario • In Indian condition, due to century old mining particularly in Damodar Valley Coalfields, the seams occurring at shallower depth have mostly been mined/being mined • Due to above, there is existence of large number of operative/disused/abandoned mines in the coalfields. • Below these mining areas, the coal reserves in virgin coal seams at depth are yet to be mined and are prime potential source of methane. • Recovery of methane from virgin coal seams (some of which are de-stressed) below the worked out seams require comprehensive approach for safe and economic operation. CMM under Indian Scenario Coal seam profile with special reference to Damodar Valley Coalfields • Coalfields are having limited spatial extent but large number of closely placed coal seams occur. • In some cases there are over 25 coal seams with cumulative thickness exceeding over 100m. • Coals are largely High Volatile Bituminous B/C to Low Volatile Bituminous as per ASTM classification. • Such high rank coals are located in Raniganj, Jharia, E.Bokaro, W. Bokaro and S. Karanpura coalfields of Damodar valley. CMM under Indian Scenario Coal Rank and Gas content in Damodar Valley CF • The gas content of coal seams in Damodar Valley CFs is ranging largely between 6-15 m3/t in the depth range of 400 to 1000m. Higher value of gas content even up to 26 m3 per tonne has also been reported. • The linear regression of increase of methane content in Parbatpur in Jharia coalfield indicate an increase of 1.3 M3 /tonne per 100 M depth. CMM under Indian Scenario Target area for CMM Development • Damodar Valley coalfields are the prime target area for CMM development: ¾ Occurrence of high rank coals ¾ Size of resource ¾ History of gassiness • The following coalfields of Damodar Valley coalfields may be potential area for CMM development ¾ Raniganj coalfields ¾ Jharia coalfields ¾ East & West Bokaro Coalfields ¾ South Karanpura Coalfileds Coalfields of India COAL & LIGNITE FIELDS OF INDIA 16 L E G E N D COAL / LIGNITE FIELDS DELHI 20 15 19 15 18 5 14 4 3 2 13 6 1 7 10 KOLKOTA 8 9 11 MUMBAI BAY 12 OF ARABIAN BENGAL SEA INDEX REF. A) GONDWANA NO. COAL FIELDS 1. Raniganj 2. Jharia CHENNAI 3. Bokaro 4. N. Karanpura 17 5. Singrauli 6. Sohagpur 7. Korba 8. Ib-valley 9. Talcher 10. Satpura LAKSHADWEEP 11. Wardha 12. Godavari 13. Birbhum ANDAMAN NICOBAR & ISLANDS 14. Rajmahal B) TERTIARY COAL FIELDS 15. N.E. Region 16. Jammu LIGNITE BASIN 17. Cauvery 18. Cambay 19. Barmer 20. Bikaner 19 15 18 5 14 4 3 2 13 6 1 7 KOLKOTA 10 8 9 11 MUMBAI BAY Raniganj Coalfield 12 OF ARABIAN BENGAL SEA Jharia Coalfield Bokaro Coalfield CMM under Indian Scenario Raniganj Coalfield : Salient features • Area : 1550 Sq Km • No. of seams ; Raniganj Formation - 10 Cumulative Thk- 30-40 m Barakar Formation – 7 Cumulative Thk- 30-120 m • VRo% : Raniganj Formation – 0.6-0.88 Barakar Formation – 0.95-1.2 • ASTM rank : Raniganj coal- High Vol Bit A-C Barakar coal-High Vol Bit-A to Med Vol Bit • Gas content (m3/t) : Raniganj coal – 5-7 Barakar coal – 0.5-10 (Erratic due to pyrolitisation) • Coal reserve likely to be available for CMM : 8.2 Billion Tonnes • Prognosticated CBM resource : 40 BCM (on a conservative estimate) Note: 1. Considering coal seams are not de-stressed. 2. CBM resource in abandoned mine not accounted. Raniganj Coalfield 86 35 40 45 50 55 87 0 5 10 15 20 25 87 30 J a M m a d t h a u r p a u r 50 SECTOR-III SECTOR-IV 50 SECTOR-II KASTA WEST MAITHON RESERVOIR AJ OY GOURANGDIH- R GANGARAM ABC IV CHAK GOURANGDIH-D ER Delhi GOURANGDIH EXTN. BADJNA GOURANGDIH KASTA CENTRAL SARISHATALI E .R .A A n I d TH MOHANPUR a N SARISHATALI l L I SANGRAMGARH o A o KASTA EAST -1 E S NIRSA p .R. BONJEMEHARI TARA Kas ta c H oalf IN SHAMPUR ield GL br A anc NA h DI Dhanb E LALGANJ ad .R .M DAMAGORIA a in KABITIRTHA MANDAMAN ALLOTTED CBM BLOCK L IISCO in LAKHIMATA e DHARMA 45 RAMNAGAR K KUMARDHUBI VICTORIA HU KAPASARA DI EAST A 45 A N VICTORIA JO AD SITARAMPUR PANDAVESWAR Y I R WEST R S E I V a E BASANTIMATA- V ch SAMLA R I n l SECTOR-X SECTOR--I a SECTOR-XII Br m R a DAHIBARI KULTI r JHUNKUNDAR Ik a BHANORA . R .R E D A BEGUNIA y K k KOTTADIH-DALURBAND A BARMONDIA e CHANCH R A E SRIPUR B .R SECTOR-XI .M MADHAIPUR KH ain A L G ine R A- SODEPUR JO BEJDIH-MITHANI ADJOY-II SONEPUR BAZARI Y DHEMOMAIN BARMONDIA-A i Chord D E.R. Tapasi Baraban SONEPUR BAZARI SECTOR-II EB TOPOSI-IKRA n o SECTOR-1 i MANDARBONI CMM BLOCK t RANGAMATI-B R NINGHA c VE G e PURSOTTAMPUR RI .T s AR .R o IT P D KRISHNANAGAR 0 1 a a A R HARIPUR 0 O O 0 NAKRAKONDA 0 d H 4 : C 1 i F AM R D h CMM BLOCK t CHINAKURI-BHARATCHAK n i a SEETALPUR PERBELIA s l RANGAMATI-A a CHORA d BURNPUR-ASANSOL n KUMARDIH 40 A SECTOR-V SURAJNAGAR SATGRAM . JAMBAD KENDA .R RANIPUR SHANKARPUR E JHANJRA 40 ly CMM BLOCK .R .E JAGANNATHPUR-A S RATIBATI JEMEHARI BANKOLA e KUNUSTORIA SIDULI TILABONI in L GHUSICK DHANGA-JORE ain CMM BLOCK SHYAMSUNDARPUR .M ly MADHABPUR .R .E J.K.NAGAR A S J O KUNUR Y MADHUKUNDA SHUNURI ICHHAPUR SECTOR-XV R NIMCHA IV E ALLOTTED CBM BLOCK R DAKHINKHANDA BIHARINATH DA AMRITNAGAR RANIGANJ MO DA R NACHAN PORADIHA RIV ER K DAM OD AR RIV BAKULIA ER NARAINKURI KALIDASPUR MADANPUR OC SECTOR-XIV 35 ANDAL L B 35 ARDHAGRAM M ALLOTTED CBM BLOCK ALLOTTED CBM BLOCKTAMLA(ABC&D) PURULIA SECTOR-VII M SECTOR-XIII I N D E X C ROAD BLOCK BOUNDARY SUPRA PANCHET BARAKAR SECTOR-VI SECTOR-IX RAILWAY LINE DYKE PANCHET TALCHIR SECTOR-VIII RIVER/NALA/JHOR U/G WORKING RANIGANJ METAMORPHIC SECTOR BOUNDARY GOAF IRON STONE SHALE 86 35 40 45 50 55 87 0 5 10 15 20 87 30 CMM: An Indian Perspective Jharia Coalfield : Salient features • Area : 450 Sq Km • No. of seams ; Raniganj Formation - 24 Cumulative Thk- 8-35 m Barakar Formation – 18 Cumulative Thk- >100 m • VRo% : Raniganj Formation – 0.86-0.9 Barakar Formation – 0.9-1.3 • ASTM rank : Raniganj coal- High Vol Bit A Barakar coal-Medium to low Vol Bit • Gas content(m3/t) : Barakar coal – 7-26 • Coal reserve likely to be available for CMM : 7.4 Billion Tonnes • Prognosticated CBM resource : 50 BCM (conservative estimate) Note: 1. Considering coal seams are not de-stressed. 2. CBM resource in abandoned mine not accounted. Jharia Coalfield 86° 10' 86° 15' 86° 20' 86° 25' 23° 23° 55' 55' T O G O M O KATRAS AREA H SIJUA AREA BARORA AREA KUSUNDA AREA BLOCK II PROJ. AREA BARORA AREA GOVINDPUR AREA POOTKEE BALHARI PROJECT AREA KUSTORE AREA 23° 23° 50' WESTERN JHARIA AREA 50' BASTACOLLA AREA WESTERN JHARIA AREA LODNA AREA F ALLOTTED CBM BLOCK L E G E N D EASTERN JHARIA CBM BLOCK F FAULT F AREA P AT HE AREA BOUNDARY RANIGANJ FM.