dgh shale gas[1]
TRANSCRIPT
Pre-Conference on Shale Gas(Petrotech-2010)
DIRECTORATE GENERAL OF HYDROCARBONS
(UNDER MINISTRY OF PETROLEUM & NATURAL GAS)
DGH
30 October 20101
Sanjay Chawla
SHALE GAS - Indian scenario
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Outline
Overview
Indian Scenario
Way Forward
Concluding Remarks
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Huge Shale Gas Potential
Shale Gas in US – A Huge success
17% of US Natural Gas Production
Huge Potential Worldwide
> 15000 TCF
Projects initiated in Europe, Asia, Africa
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?
Huge Shale Gas Potential
SCHEMATIC OF SHALE GAS
Conventional Non Associated Gas
Conventional Associated Gas
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Shale Gas Characteristics• Mature Petroleum source rocks
• Rich in Organic Matter• TOC = 2-3%; VRo= 1-1.2%,
• Usually Thermogenic
• Low in Permeability (K= 0.01mD or less-nD).
• High Natural Gas in-place volumes7
What changed the game?
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SCHEMATIC SHALE GAS COMPLETION
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HORIZONTAL SHALE GAS COMPLETION
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Horizontal Vs Vertical - Shale Gas Production
Source: EIA , 2010
16000 SCMD Vs 4000 SCMD
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Shale Gas Fracturing Job site
In the Marcellus, 3 to 5 million gallons (or 900 truckloads) water for completing a standard 5-10 stage lateral utilizing slick water fracs every 300 ft. 12
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Water Storage
BASIN GEOLOGICAL AGE
1 CAMBAY TERTIARY
2 GONDWANA PERMIAN
3 ASSAM-ARAKAN TERTIARY
4 KG - ONSHORE CRETACEOUS
5 CAUVERY -ONSHORE CRETACEOUS
6 INDO -GANGATIC
PROTEROZOIC/TERTIARY
Shale Gas Prospect - India
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Prospective Basins/ Shales
• Cambay Basin– Cambay Shale (TOC ~ 2 -6 %)
• Gondwana (Damodar Valley)– Barren Measures (TOC ~ 3-4 %)
• KG & Cauvery (onland) Basins– KG: Bhuvanagri & Raghavpuram Shales
(TOC up to 1- 2.5%)– Cauvery: Andimadam & Sattapadi Shales
(TOC ~ 2-2.5%) 15
Prospective Basins/ Shales
• Assam Arakan Basin– Kopili (~1- 6%), Disang & Barail Coal Shale (~2-
10%) in Assam – Bokabil & Bhuban Shales in Tripura
• Indo Gangetic plain– Lower Vindhyan shales, particularly, Hinota and
Pulkova shales ( TOC up to 4%)
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Issues - Shale Gas in India
• Large area under PEL/ML (2/3rd) – Prospective area have PEL/PML– Policy requirement for Fast track exploration– Simultaneous exploitation
• Environmental & Logistic– Water Requirement & Water Disposal– Land for drilling activity– Infrastructure congestion 17
Action taken & Way Forward - Shale Gas in India
• Formation of Multi Organizational Team (MOT)– DGH, ONGC, OIL & GAIL– Identification of prospective areas/Basins– Assimilation of Geo-scientific data
• Co-operationn with USA– Resource Assessment
– Policy formation – Indian delegation attended GSGI Conference
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Action taken & Way Forward - Shale Gas in India
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•Formulation of Shale Gas Policy• Under discussion
• First Shale Gas Round• End 2011
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Shale Gas in India –Timelines
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Sl. No.
Activity Date
1.
2.
3.
Identification of Shale Gas prospectivearea & Resource Assessment.
Framing of Policy on Shale Gas& Amendment to P&NG Rule
Co-operation with USA
Mid 2011
Mid 2011
End 2010
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Sl. No.
Activity Date
4.
5.
Results of R&D projects in Damodar Valley by ONGC
Floating of First Round of Shale Gas Blocks
Mid 2011
End 2011
Shale Gas in India –Timelines
To sum up …….• Indian Basins appears prospective
• Identification of prospective areas & Resource Assessment in progress
• Policy formulation incorporating all relevant issues is in progress
• Offering of Blocks 201122
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