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Environment Clearances FY 2024-25 - Category A
Project Name Asset/Basin/Plant Date of EC Granted
EC for 22 wells in Forest Area in 6 PML Golaghat Jorhat

Jorhat

25 June 2024

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Environment Clearances FY 2024-25 - Category B
Project Name Asset/Basin/Plant Date of EC Granted
Drilling and exploratory location KUAR falling at West Tripura District

Tripura Asset

18 Dec 2024
Drilling and exploratory location ROMAA falling at Sepahijala District

Tripura Asset

18 Dec 2024
Drilling and exploratory location AA-ONO-184-BOA-B (OALP-III PEL) falling at Sepahijala District

Tripura Asset

18 Dec 2024
Drilling and exploratory location ROKAA falling at Sepahijala District

Tripura Asset

18 Dec 2024
Drilling and exploratory location ROKAB falling at Sepahijala District

Tripura Asset

18 Dec 2024
Drilling and exploratory location KHBW falling at North Tripura

Tripura Asset

18 Dec 2024
Exploratory drilling of 04 wells in Bengal Onshore OALP-V Block BP-ONHP-2019/2 situated in East Medinipur and West Medinipur Districts of West Bengal under MBA Basin, Kolkata

MBA Basin

12 July 2024

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Environment Clearances FY 2023-24 - Category A
Project Name Asset/Basin/Plant Date of EC Granted
Onshore development & production from 5 wells falling in forest area of 3 PML blocks in South Tripura, Sepahijala and West Tripura districts, Tripura

Tripura

12 October 2023
Exploratory Drilling for Oil and Gas in Agartala Dome Baramura, Khowai, Kalyanpur West and South Tripura

Tripura

11 October 2023
Onshore Development and Production of oil and gas from 28 wells and establishment of kasomarigaon EPS and GGS at SUAB drill site in forest area in 6 PML Blocks, Golaghat district, Assam

Jorhat

31 July 2023
Onshore Development and Production of oil & gas from 145 wells in 30 ML blocks in Bharuch, Surat and Vadodara districts, Gujarat

Ankleshwar

13 April 2023
Onshore development and production of oil and gas from 15 Development wells and establishment of Quick Production 2005/4 situated in North 24Systems (QPS) in NELP VII block WBONN-Parganas and Nadia districts, West Bengal

MBA Basin

13 April 2023

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Environment Clearances FY 2023-24 - Category B
Project Name Asset/Basin/Plant Date of EC Granted
Onshore Oil and Gas Exploration and Appraisal in OLAP Block GS-ONHP-2021/1 by drilling 3 wells in Junagarh district of Gujarat

Western Onshore Basin

26 July 2023
EC for Oil and Gas Exploration & Appraisal of 12 wells in six MLs (Gandhar-EXT-III, IV, V, VI, VII and IX) of Western Onshore Basin in Bharuch district of Gujarat

Western Onshore Basin

20 Feb 2024
EC for Exploratory Drilling of 3 Exploratory Wells in OALP ML BLOCKS GK-ONHP-2019/1 & GK-ONHP-2021/1 in Kachchh District Of Gujarat

Western Onshore Basin

20 Feb 2024
EC for Dilling and exploratory location SDAX

Tripura

30 Dec 2023
EC for Dilling and exploratory location KUAO

Tripura

30 Dec 2023
EC for Dilling and exploratory location GOAR

Tripura

30 Dec 2023
EC for Dilling and exploratory location GOAP

Tripura

30 Dec 2023
EC for Dilling and exploratory location GOAQ

Tripura

30 Dec 2023
EC for Dilling and exploratory location SDAW

Tripura

30 Dec 2023
EC for Dilling and exploratory location KUAN

Tripura

30 Dec 2023
Proposed Onshore Exploratory drilling of 08 wells in Bengal Onshore OALP-IV Block BP-ONHP-2019/1 situated in East Medinipur and West Medinipur Districts of West Bengal

MBA Basin

13 Dec 2023
Drilling of Sixteen Exploratory Oil & Gas Wells in OALP PEL Blocks CB-ONHP-2020/1 and CB-ONHP-2021/1, Ahmedabad & Gandhinagar Districts, Gujarat

Western Onshore Basin

05 Dec 2023
EC for Dilling and exploratory location DRAA

Tripura

12 October 2023
EC for Dilling and exploratory location DRAA

Tripura

12 October 2023
EC for Dilling and exploratory location KHBS

Tripura

12 October 2023
EC for Dilling and exploratory location KHBQ_Z

Tripura

12 October 2023
EC for Dilling and exploratory location GOAN

Tripura

12 October 2023
EC for Dilling and exploratory location BRMAK

Tripura

12 October 2023
EC for Dilling and exploratory location ADAW

Tripura

12 October 2023
EC for Dilling and exploratory location SDAU

Tripura

02 August 2023
EC for onshore Oil & Gas exploration and appraisal from 46 wells in 17 ML block in Mehsana, Gandhinagar, kheda and Anand districts of Gujarat

Western Onshore Basin

26 July 2023
EC for onshore Oil & Gas exploration and appraisal from 46 wells in 17 ML block in Mehsana, Gandhinagar, kheda and Anand districts of Gujarat

Western Onshore Basin

26 July 2023
EC for Exploratory drilling of three wells in the CB-ONHP-2019/1 Block of Mehsana district

Western Onshore Basin

26 July 2023
EC for Exploratory Drilling of 10 wells in the OALP block CB-ONHP-2021/2, Western Onshore Basin, Gujarat

Western Onshore Basin

05 July 2023
EC for Onshore exploration of hydrocarbon from 25 wells in 10 ML Blocks in Anand & Vadodara District

Western Onshore Basin

08 June 2023
Corrigendum in EC for setting up of Onshore oil and gas exploration, development & production (including early production) at 3 wells

Western Onshore Basin

19 April 2023

Onshore development and production of oil and gas from 15 Development wells and establishment of Quick Production Systems (QPS) in NELP VII block WBONN- 2005/4

MBA Basin

13 April 2023

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2022 - Category A
Project Name Asset/Basin/Plant Date of EC Granted
Grant of Environmental Clearance (EC) to the proposed Project Activity under the provision of EIA Notification 2006 - regarding

Ankleshwar Asset

13 Apr 2023

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2022 - Category B
Project Name Asset/Basin/Plant Date of EC Granted
Grant of Environmental Clearance (EC) to the proposed Project Activity under the provision of EIA Notification 2006-regarding

Madhya Pradesh

13 Oct 2022
Onshore Additional Exploration drilling of 50 wells in Godavari on-land PML blocks of KG Basin in East and West Godavari Districts of Andhra Pradesh

Andhra Pradesh

06 Dec 2022
Exploration drilling of 3 wells in CD-ONHP-2020/1 (OALP-VI) Block of Cuddapah Basin in Kurnool, Avantapur and YSR KADAPA Districts of Andhra Pradesh

Andhra Pradesh

06 Dec 2022
Grant of Environmental Clearance (EC) to the proposed Project Activity under the provision of EIA Notification 2006-regarding

Dehradun
16 Oct 2022
Drilling of exploratory wells in OALP-VI Block GV-ONHP-2021/1

Bihar
27 May 2022
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2021 - Category A
Project Name Asset/Basin/Plant Date of EC Granted
Environmental Clearance for conversion of 37 exploration wells & laying of Associated Flowlines, involving construction of Well Manifold at Kunjaban & Sundalbari and Pipeline at NorthTripura Tripura Asset 07 June 2021
Environmental Clearance for Drilling of development wells (108 nos. oil and gas wells) in the oil fields of Ahmedabad Asset at Mehsana and Gandhinagar Districts of Gujarat Ahmedabad Asset --

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2021 - Category B
Project Name Asset/Basin/Plant Date of EC Granted
Environmental Clearance accorded for Drilling of 5 exploratory wells in NELP-VIII Block VN-ONN-2009/3 Frontier Basins 11 Oct 2021
Environment Clearance for Exploration, Development and Production in five onshore PML blocks in AAFB, A&AA Basin, Cachar District and Karimganj District, Assam A&AA Basin 27 Sep 2021
Onshore Development and Production of oil & gas from 53 wells in 7 ML blocks by M/s Oil and Natural Gas Corporation Limited located in Jorhat and Golaghat districts, Assam Jorhat Asset 17 March 2021
Environmental Clearance Certificate for "Drilling and exploratory location TIAG" falling in Tichna PML at Jagatrampur, Kathalia Tehsil, Sonamura Sub-Division, Sepahijala District Agartala 04 Sep 2021
Environmental Clearance Certificate for drilling and exploratory location BMSD falling in Baramura Extn-IV PML at Patni Tehsil, Harbhanga, West Tripura Tripura Asset 08 March 2021
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2020
Project Name Asset/Basin/Plant Date of EC Granted
Expansion of onshore oil & gas processing plant by M/s ONGC Ltd. at Uran by establishing Additional Cogeneration Unit GT-IV and Enhanced Reactive Thermal Oxidizer (ERTO) within the existing Uran Plant, located in Uran, Maharashtra Uran Plant 13 Oct 2020
CRZ Clearance for laying of 20-inch gas pipeline of 31 km length from Offshore Platform, in the East Coast passing through the mouth of the Gautami – Godavari River, part of Yanum (2.51 km) U.T. of Puducherry and East Godavari District, Andhra Pradesh Eastern Offshore Asset 15 Oct 2020
Conversion of exploratory well KSAB to Development well located at Kasomarigaon, District Golaghat, Assam Jorhat Asset 08 Dec 2020
Offshore oil/gas development by drilling of four wells by M/s ONGC Ltd. under the NELP V Offshore Block CB-OSN-2003/1 at Aliabet Field, Ankleshwar Asset (Gujarat) Ankleshwar Asset 22 Apr 2020
Exploration in Kangra-Mandi PEL Block in Mandi and Kangra Districts, Himachal Pradesh Frontier Basin 15 Apr 2020

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2019
Project Name Asset/Basin/Plant Date of EC Granted
Expansion of OGT and CPP at onshore and addition of Process cum Living Quarters Platform bridge connected to Well Head Platform at offshore of Development Operation by M/s Gujarat State Petroleum Corporation Ltd in KG-OSN-2001/3 Offshore Block at Village Mallavaram, Mandal Tallarevu, District Godavari (Andhra Pradesh) HP-HT Asset 30 Jul 2019
Deen Dayal Development project (KG-OSN-2001/3 Block NELP-III) regarding setting up of offshore well Head platform in KG Basin, offshore to onshore sub-sea pipeline, Onshore gas terminal (OGP), Condensate Storage Unit / (CSU) at Mallavaram, Andhra Pradesh with landfall point at Avipolam Hamlet of Yanam in Puducherry HP-HT Asset 13 Nov 2019
Onshore exploration, development and production of oil & gas in 21 onshore PML blocks in Upper Assam North, A & AA Basin at District Sivasagar (Assam) A&AA Basin 06 Dec 2019
Onshore Exploration and development of oil & gas by M/s ONGC Ltd in Assam and Assam Arakan Basin (A&AA Basin) in Districts Cachar and Hailakandi (Assam) A&AA Basin 07 Aug 2019
Onshore development and production of oil and gas from six wells in 5 Mine Lease Blocks in Districts Jorhat and Golaghat (Assam) Jorhat Asset 01 May 2019
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2018
Project Name Asset/Basin/Plant Date of EC Granted
Onshore Development and Production of Oil and Gas from 72 wells in two onland PML Blocks (Godavari, West Godavari and Krishna (Andhra Pradesh) Rajahmundry Asset 31 Oct 2018
Exploratory Drilling of 22 Wells (Onshore) in Ramanathapuram PML Block, District Ramanathapuram (Tamil Nadu) Cauvery Basin 30 Aug 2018
Development and Production of Gas in Banskandi and Bhubandar Block with Interconnecting pipelines by M/s ONGC Limited at Tehsil Silchar, District Cachar (Assam) Exploratory Asset, Silchar 06 Jul 2018
Onshore Oil and Gas Development and Production from 3 wells by M/s ONGC Ltd at Nagayalanka in the onland NELP-V Block KG-ONN-2003/1 in District Krishna (Andhra Pradesh) Rajahmundry Asset 20 Mar 2018
Shale Oil & Gas Exploration in 11 Blocks by M/s Oil and Natural Gas Corporation Ltd in Cambay Basin in the districts of Mehsana, Gandhinagar, Ahmedabad, Kheda and Bharuch (Gujarat) Western Onshore Basin 20 Mar 2018
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2017
Project Name Asset/Basin/Plant Date of EC Granted
Drilling of 6 Exploratory Wells (RBK-1, LBAA, RPAA, RLBK-1, RTDN-1 and RBK-3) in Pre-NELP Block AA-ONJ/2 at Cachar, Assam A&AA Basin 06 Mar 2017
Development drilling of 108 wells laying of 4”and 8”oil and gas flow lines & establishment of 03 numbers of EPS, 01 number of WHI, 03 nos of Water injection facilities and 03 nos. of ETP of M/s ONGC in operation areas of Cambay Sub Asset in Gujarat Cambay Asset (Gujarat) 16 Mar 2017
Proposed 8 no. of exploratory drilling in ML areas of Sivasagar, Assam A&AA Basin 20 Mar 2017
Drilling of Development wells (108 nos.) in oil field of Ahemdabad Asset of ONGC Ltd. at Mehsana and Gandhinagar, Gujarat Ahmedabad Asset 20 Mar 2017
Additional Exploratory Drilling of 15 wells in NELP-1 Offshore Block KG-DWN-98/2, KG Basin, Andhra Pradesh KG Basin 28 Mar 2017
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2016
Project Name Asset/Basin/Plant Date of EC Granted
Development Plan of CBM Block (BK-CBM-2001/1 in District Bokaro, Jharkhand by M/s ONGC) CBM Asset 28 Mar 2016
Development drilling of 45 wells at Block KG-DWN-98/2, KG offshore, Tehsil Allavaram, District East Godavari, Andhra Pradesh Eastern Offshore Asset 22 Jan 2016
Development Drilling of (406 nos.) of wells (Oil and natural Gas) in oil Field of Ahmedabad Asset at Kheda, Gandhinagar and Ahmedabad District of Gujarat Ahmedabad Asset 22 Mar 2016
Exploratory Drilling of 22 nos. of Wells in NELP-IX Blocks GEI-ONN 201011, CB-ONN-201 0/6 & CB-ONN-201019 at Banaskantha, Gandhinagar and Ahmedabad District, Gujarat Western Onshore Basin 28 Mar 2016

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2015
Project Name Asset/Basin/Plant Date of EC Granted
Drilling of one Exploratory Well at MB-OSN-2005/3 (NELP-VII Block), Mumbai Offshore southwest of the Mumbai High-DCS platform Western Offshore Basin 7 Jan 2015
Exploratory Drilling (3 wells) in Bengal Onshore Block WB-ONN-2005/3, West Bengal under NELP-VII MBA Basin 22 Jan 2015
Development of Vashishta and S-1 fields of K.G. offshore, Eastern Offshore Asset at Kakinada, Andhra Pradesh and expansion of Odalarevu Onshore Terminal, A.P. Eastern Offshore Asset 12 Nov 2015
Exploratory Drilling of 4 wells at NELP-VII Block, VN-ONN-2009/3, Son Valley, Vindhyan, Frontier Basin, District Damoh, Madhya Pradesh Frontier Basin 27 Oct 2015
Exploratory Drilling of 10 wells at NELP-VI, Onshore Block CY-ONN-2004/2 in Ariyalur District, Tamil Nadu Cauvery Basin 10 Sep 2015
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2013
Project Name Asset/Basin/Plant Date of EC Granted
Posting Environmental Clearance for exploratory drilling in NELP VIII Block, GK-OSN-2009/1 in Kutch offshore Kutch Offshore 14 Jun 2013
Exploratory drilling (24 additional wells) in onshore PEL Block L-II of Cauvery Basin, District Nagapattinam, Tamil Nadu Cauvery Basin 21 Aug 2013
Exploratory Drilling of 3 Wells in Onshore NELP-VII Block PR-ONN-2005/1 of Cauvery Basin, Tamil Nadu Cauvery Basin 14 Oct 2013
Environmental Clearance for Exploratory Drilling of 25 wells in KG onland PEL Blocks in AP KG Onland 14 Jun 2013
Posting Environmental Clearance for exploratory drilling in NELP VIII Block, GK-OSN-2009/2 in Kutch Offshore Kutch Offshore 14 Jun 2013
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2012
Project Name Asset/Basin/Plant Date of EC Granted
Environmental Clearance for Exploratory Drilling of additional 24 On-land Well in KG Basin(18.05.2012) KG Basin 18 May 2012
Environmental Clearance for drilling of 4 Exploratory wells at Suket #1 of Frontier Basin.(05.09.12) Frontier Basin 5 Sep 2012
Environmental Clearance for exploratory drilling in Offshore KG-Basin in Andhra Pradesh. (050912) KG Basin 5 Sep 2012

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2011
Project Name Asset/Basin/Plant Date of EC Granted
Environmental Clearance for exploratory well Chechat-1 of Frontier Basins (08.12.2011) Frontier Basins 8 Dec 2011
Environmental Clearance for Clearance w.e.f. 01.01.2010 to March 2011 & Granted by MoEF during 2011-12 Pan-India
Environmental Clearance letter for NELP Blocks of Cauvery Basin (14.01.2011) Cauvery Basin 14 Jan 2011
Environmental Clearance of well Palaita #1 of Frontier Basin (17.12.2011) Frontier Basins 26 Jul 2011

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2010
Project Name Asset/Basin/Plant Date of EC Granted
Environmental Clearance letter for NELP Blocks of WOB (20.09.2010) WOB 20 Sep 2010

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2009
Project Name Asset/Basin/Plant Date of EC Granted
Environmental Clearance for ONSHORE Development Drilling, Projects and Platforms from ASSETS, OFFSHORE Pipelines, Supply Base and Plants w.e.f. 14.09.2006 up to 31.12.09 Pan-India