Shale Oil and Gas | Directorate General of Hydrocarbons (DGH)

 

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Shale Oil and Gas

 

Introduction:

Shale gas & oil is defined as natural gas & oil from shale formations. The shale acts as both the source and the reservoir for these unconventional hydrocarbons. Older shale wells were vertical while more recent wells are primarily horizontal and need artificial stimulation, like hydraulic fracturing, to produce. Only shale formations with certain characteristics will produce gas and oil.

 

The Government of India has carried out studies through various national and international agencies for the identification of shale oil and gas resources in the country. Based on the data available from conventional oil/gas exploration in the country for the last so many years, the country holds promising reserves of Shale Gas & Oil resources and the following sedimentary basins are considered prospective from Shale oil and gas point of view:

 

Various agencies have estimated the shale gas resource potential in selected sedimentary basins/ sub-basins as indicated below:

 

Policy Initiatives by Govt. of India:

Ministry of Petroleum & Natural Gas, Govt. of India vide policy dated 14th October 2013 granted permission for Shale gas and oil exploration and exploitation initially only by NOCs (ONGC & OIL) in on-land nomination blocks i.e. blocks awarded to the NOCs on nomination basis before the advent of Pre-NELP and NELP PSCs. The policy was announced with exclusive purpose of promoting Shale Gas & Oil operations in the existing onland PEL/PML areas under Nomination acreages in the overall interest of energy security in the country.

As per the policy, the NOCs have been permitted three Assessment Phases for exploration (Phase I, II & III) of 3 years. Each Phase will culminate in a development and production phase depending on the results of the Assessment Phase.

As per the Policy, the NOCs are obligated to carry out committed work program in respect of following for each identified block:

Minimum no. of PEL/PML areas to be taken up by the NOCs during each Assessment Phase is specified in the Policy and is as follows:

Company/Phase

ONGC

OIL

Phase-I

50

5

Phase-II

75

5

Phase-III

50

5

TOTAL

175

15

GRAND TOTAL

190

However, the company shall have the liberty to take-up more no. of PEL/PML areas for Shale Gas exploration & exploitation. For the purpose of phasing, each PEL/PML area is treated as a BLOCK.

 

Current Status on Exploration of Shale Gas & Oil:

As per the policy guidelines, ONGC have identified and initiated exploration activities for Shale Gas & Oil in 50 nomination blocks respectively under Phase-I. The details of identified blocks by ONGC are as under:

 

S. No.

Block

Original Block Area (Sq. Km)

Validity of License Up to

Current Status

CAMBAY  (28 Blocks)

1

Jotana Warosan

­38.5

23.06.2025

­Under Phase-I

2

Linch

­43.73

15.10.2033

­Under Phase-I

3

Linch Extn (Ext-1 & Ext-II)

­34.25

17.03.2017

­­Under Phase-I

4

Nandasan Langhnaj

­61.9

26.04.2026

­­Under Phase-I

5

Jotana South

­23

09.03.2024

­­Under Phase-I

6

Kalol Ext-I

159.92

03 08 2026

­Under Phase-I

7

Kalol West Sector

54.25

02.02.2022

­Under Phase-I

8

Nandej Sector

56.18

07.02.2022

­Under Phase-I

9

Nawagam South Sector

53.71

12.12.2025

­Under Phase-I

10

Wadu Ext-I

55.17

18.05.2017

­Under Phase-I

11

Paliyad Kalol Limbodra

161.48

25.06.2015

­Under Phase-I

12

Nawagam Main Sector

72.23

27,03.2027

­Under Phase-I

13

Gandhar Ext-VI

44.47

21.01.2017

­Under Phase-I

14

Gandhar Ext-III

235.38

23.02.2027

­Under Phase-I

15

Gandhar Ext-XII

29

18.06.2025

­Under Phase-I

16

Gandhar Ext-I

32.75

07.10.2026

­Under Phase-I

17

Gandhar Ext-IV

36.75

29.08.2014

­Under Phase-I

18

Gandhar Ext-V

29.43

21.03.2016 (Under Extension)

­Under Phase-I

19

Gandhar Ext-VII

25.82

23.04.2019

­Under Phase-I

20

Gandhar Ext-IX

40.91

19.08.2022

­Under Phase-I

21

Pakhajan Ext-II

38.5

15.09.2022

­Under Phase-I

22

Pakhajan Ext-I

18

09.01.2015 (Under Extension)

­Under Phase-I

23

Dahej Ext-I

90.9

16.04.2014 (Under Extension)

­Under Phase-I

24

Kural

83.49

02.04.2021

­Under Phase-I

25

Umra Ext-II

34.43

12.03.2017

­Under Phase-I

26

Denwa-Gandhar Ext-II

54.3

07 07.2026

­Under Phase-I

27

Kadi ML

64.49

17.08.2028

­Under Phase-I

28

Gandhar Ext-VIII

7.23

15.08.2020

­Under Phase-I

KG (10 Blocks)

1

West Godavari

1278.32

31.12.2019

­Under Phase-I

2

Mahadewapatanam

138.89

27.11.2028

­Under Phase-I

3

Bantumili Ext Sector

117.67

04.01.2019

­Under Phase-I

4

Mandapeta

40

21.08.2015 (Under Extension)

­Under Phase-I

5

Mandapeta West

20

31.05.2024

­Under Phase-I

6

Nandigama

55

30.01.2020

­Under Phase-I

7

Kavitam Sector

120.35

20,11.2019

­Under Phase-I

8

Suryaraopeta

56

29.07 2022

­Under Phase-I

9

Malleswaram

241.18

21.11.2031

­Under Phase-I

10

Godavari Onland

2176

31.12.2019

­Under Phase-I

CAUVERY (09 Blocks)

1

Kuthalam

­91

31 05.2021

­­Under Phase-I

2

L-I

­948.16

30.12.2019

­­Under Phase-I

3

Greater Bhuvanagiri

­14

14 12.2027

­­Under Phase-I

4

Greater Kali

­36

20.07.2030

­­Under Phase-I

5

Greater Narimanam

­54

26.01.2026

­­Under Phase-I

6

Ramanathapuram

­493.21

20.11.2019

­­Under Phase-I

7

Kuthanallur

­6.25

25.02.2024

­­Under Phase-I

8

Kamalapuram Sector

­23.5

26.05.2019

­­Under Phase-I

9

L-II

1542.02

30.12.2019

­Under Phase-I

ASSAM & ASSAM ARAKAN (03 Blocks)

1

Lakwa

172.49

28.09.2028

­Under Phase-I

2

Banamali

50

16.12.2022

­Under Phase-I

3

Namti ML

35.55

08.11.2027

­Under Phase-I

GRAND TOTAL (50 Blocks)

 

 

OIL:

As per the policy guidelines, OIL have identified and initiated exploration activities for Shale Gas & Oil in 6 nomination blocks respectively under Phase-I. The details of identified blocks by OIL are as follows:

S. No.

Block

Original Block Area (Sq. Km)

Validity of License Up to

Current Status

1

Dibrugarh PML

186

21.01.2018

Under Phase-I

2

Chabua PML

189

11.06.2022

Under Phase-I

3

Dumduma PML

506.21

25.11.2029

Under Phase-I

4

Jairampur Extn PML

23.25

03.03.2019

Under Phase-I

5

Jaisalmer PML

250

31.12.2015

(Under Extension)

Under Phase-I

6

Deomali PML

113.5

03.04.2014

(Under Extension)

Under Phase-I

 

As per the information furnished by OIL, G&G activities in these identified blocks is in progress to identify prospective locations for drilling of Shale Gas & Oil wells.