NATIONAL GEOSCIENCE AWARD - 2013
FIELD : COAL, LIGNITE & CBM DISCOVERY & EXPLORATION
[ RANIGANJ COAL FIELD, WEST BENGAL ]
Recipients: 1. Subrata Kumar Sardar, Sr. Geologist
2. Mohan Das Roy, Ex-GSI
3. Resmi, R.C., Geologist
4. Anima Gogoi, Geologist
5. Jyoti Sankar Roy, Director. Gondwana Coalfields of India
Stores >99% of coal resource of country
Uttarpradesh.
Bihar
Madhyapradesh. Jharkhan d
Maharashtra.
2 DAMODAR-KOEL VALLEY BASIN BELT
Scale 50 0 50km
24°
89325.75 Million tonne coal resource (29% of national total)
31712.01 Million tonne coking coal resource (93% of national total) RANIGANJ COALFIELD
300m Suprapanchet
600m Panchet
1150m Raniganj
Barren 600m Measures
750m Barakar Storehouse of superior quality non-coking coal used for cement, paper, sponge iron etc. Talchir 500m TRANS-AJAY SECTOR
3.5 0 3.5 7 km
#
12
20
20
10 a
Bar#kola # Bachra 12
10
Birkulti #
RN-1
RN-2 (s)
Dal #urband
Trans-Ajay Sector ~ 100 sq km
Barakar and Barren Measures below thin alluvium
10 sq km in the western end under mining / leasehold PREVIOUS WORK 1964-1967: GSI worked in Kasta Area (Barakar Formation) covering 30 sq km
SCALE 0 1 km N
8° KASTA AREA Parsundih C 10° RK-9 Barhra
A
3° D AJOY RIVER 4° BARUL-BAGDIHA SECTOR Barul Bagdiha
Raniganj Formation Barakar Formation Barren Measures Basement CONCLUSIONS FROM KASTA
3 seams - cumulative seam thickness varies from 10.86m to 2m
only top one is important and persistent
quality and thickness deteriorated – Eastward
Area is not potential for future exploration RETROSPECTION AT BARUL-BAGDIHA SECTOR
Thickness variation of Salanpur A Seam N
8° Parsundih10° C RBB-8 RBB-5 BarhraRK-9
A
4° D 3°AJOY RIVER Barul Bagdiha
87o08/ 87o10/ RBB-2 23o45/ SCALE 23o45/ RBB-8 0 500m RBB-1 RBB-4 20m 130m 335.15 4.68 RBB-5 RBB-9 343.20 23o44/ RBB-3 80m 23o44/ 4.68 15.66m RBB-7 350.37 4.09 362.10 2.21
80mRBB-6 87o08/ 87o10/ 459.25 5.75 470.13 1.92 474.90 5.24 23.21m 481.35 10.30 RETROSPECTION AT BARUL-BAGDIHA SECTOR Contd.
N RK-3
87.87 RK-1
95.35
13m Dip Direction 9m
RBB-8 25.00
RK-1: Kasta borehole
RBB-8: Barul-Bagdiha borehole
9m Cumulative coal content 33m INVESTIGATED BLOCKS
2002-2013: North of Ajay River under the Barren Measures probed in five (5) Blocks / Areas totaling 59 sq km
TAMRA BLOCK 2002-2006 8.5 sq km
NABASAN BLOCK 2005-2009 6.0 sq km
BINODPUR-BHABANIGANJ BLOCK 2008-2010 14.0 sq km
EAST OF BHABANIGANJ AREA 2009-2012 10.5 sq km
SOUTH OF HINGLA AREA 2010-2013 20.0 sq km PRESENT WORK
SCALE 0 1 km N
8° KASTA AREA Parsundih C 10° RK-9 Barhra 2002-06
Tamra block A RT-3
Nabasan 3° D AJOY RIVER 4° Y' BARUL-BAGDIHA SECTOR Barul Bagdiha
Raniganj Formation Barakar Formation Barren Measures Basement PRESENT WORK
N RK-3
87.87 RK-1
RT-2 95.35
RT-3
13m 297.50 RT-5 9m 354.00 Dip Direction 16m RT-1 RBB-8 126.10 25.00 16m
34m RK-1: Kasta borehole ONEGEOLOGY RT-1: Tamra borehole
(IGCP PROJECT 624)RBB-8: Barul-Bagdiha borehole 33m 9m Cumulative coal content PRESENT WORK
Raniganj Formation Barakar Formation Barren Measures Basement
SCALE PRESENT0 1 km WORK N
8° KASTA AREA Parsundih 10° RK-9 Barhra
RBBJ-11 RNB-6 RNB-1 RBBJ-8 Tamra block RBBJ-10 RBBJ-1 REB-1 RBBJ-4 RT-3 Binodpur-Bhabaniganj RNB-3 Block Nabasan RBBJ-5 RBBJ-9 Block RBBJ-6 East of Bhabaniganj RNB-4 Area RNB-5 RBBJ-2 RBBJ-7 RNB-2 Nabasan RBBJ-3 RBBJ-12 3° REB-2 AJOY RIVER 4° REB-3 BARUL-BAGDIHA SECTOR Barul
Bagdiha PRESENT WORK
Dip Direction SIGNIFICANCE
Dip Direction OUTCOME
Augmentation of Power-grade coal Resource 552 mt over 59 sq. km area
depth zone % of Resource 0-300m 25%
300-600m 67%
below 600m 8%
CBM: RSH-5 in situ gas content < 1gm / cc ALTERNATIVE UTILISATION OF RESOURCE COAL GASIFICATION Thickness: 25 – 2 m
Rank: Sub-Bituminous to High volatile bituminous
Dip: 7o to 11o
Ash: 29-45% Moisture: 2- 5.7%
Roof: 20m thick shale above seam Raniganj Formation Barakar Formation Basement N Barren Measures N
8° C Parsundih10° Barhra
Barul Bagdiha ALTERNATIVE UTILIZATION OF RESOURCE COAL LIQUEFACTION
High percentage of hydrogen-rich maceral (Liptinite ) upto 42 % along with Sub-Bituminous to High volatile bituminous rank indicate suitability for LIQUEFACTION in the northern part of Trans-Ajay sector
Raniganj Formation Barakar Formation Barren Measures Basement
0 1 km N
8° Around 135 mt within C Parsundih10° 0-300m depth Barhra
Barul Bagdiha PRESENT APPROACH
(a)Concept-based tectono-sedimentary knowledge of basin analysis will help to identify additional potential areas of Barakar coal horizons at shallower to intermediate depth elsewhere, particularly to the western part of RCF.
(b) Enhanced ‘National Energy Scenario’.
Power-grade Coal of relatively higher quality (Grades: B & C) intersected to the west & central parts of Trans- Ajay.
(c) Societal value: nearby area development.
COAL BED METHANE
RSH - 5: in situ gas content < 1gm / cc
Ro (mean) 0.41 - 0.43% [ ideal 0.70% ]
Permeability 0.9482 md [ ideal > 1md ]
Cleat frequency 4 nos / cm [ 60% mineralised ]
High Langmuir Value 12.6 - 13.8 cc / gm [ seams highly under-saturated ]
Estimated GIP (Gas-in-Place) 36.40 MCM [ within 300 - 600m depth range / for 20 sq.km ]