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Donghae-1, Donghae-2 Gas Field |
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| Block |
Field |
Operator |
Year of Participation |
KNOC’s Share (%) |
| 6-1 |
Donghae-1 |
KNOC |
Aug. 1997 |
100 |
| 6-1 |
Donghae-2 |
KNOC |
Sep. 2011 |
70 |
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History |
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KNOC successfully performed an exploratory drilling in the Gorae V structure located in the middle of Block 6-1 in July 1998. This was followed by a feasibility study for development and three appraisal drillings until 1999. Based on the results of the study, development of the Donghae-1 gas field began in June 2001 with an exploitation permit from the Korea government. Construction of production facilities took two years from March 15, 2002 and production began on July 11, 2004.
In 2015, production well drilled to develop Donghae-2 gas field(Gorae VIII structure) which is located 5.4km southwest from Donghae-1 gas field. After installation of subsea production facilities and pipeline connected to the Donghae-1 platform, KNOC has successfully started production from Donghae-2 gas field on July 2016. And Finally Donghae-1,2 Gas Field was end of Production on December 31, 2021.
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| Dec. 31, 2021 |
Donghae-1, 2 Production End |
| Jul. 2016 |
Start Production from Donghae-2 field 1 production well (DH2 1P) |
| Dec. 2015-Jun. 2016 |
Donghae-2 production well drilling and production facilities installation |
| Sep. 2011 |
Award of concession contract of 6-1C block for Donghae-2 development |
| Nov. 2009 |
Start production from the additional gas well ‘DH1 4P’ |
| Jul. 11, 2004 |
Begin the first gas from Donghae-1 field 3 production wells (DH1 1P/2P/3P) |
| Dec. 31, 2001 |
Sign an installment, procurement, and construction agreement |
| June 2001 |
Obtain an exploitation permit from the Ministry of Commerce, Industry and Energy |
| Sept. 2000-Nov. 2001 |
Build front-end engineering and detailed designs |
| Feb. 2000-Aug. 2000 |
Establish a development plan and conduct an environmental impact assessment |
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Business Outline |
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The Donghae-1 and Donghae-2 gas field contains the late Miocene sandstone reservoirs which are believed to be deformed shallow marine sands sealed with silty shales. Development of the gas field marked a milestone in the history of the company. With Donghae-1 gas field, KNOC became the first oil and gas producer in Korea.
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Offshore platform and topside facilities |
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Offshore platforms consist of 163 meter high jackets with four legs; three story topside decks with eight files of 72 inches in diameter; and a 152 meter high undersea section. The platform was designed to withstand wind velocity of 50 meters per second and waves of up to 17.5 meters (record breakers in the last 100 years). The facilities are able to endure an earthquake of up to magnitude 6.5 on the Richter scale. |
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Pipeline |
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A gas pipeline runs 68 kilometers from the offshore platform to onshore facilities: 61 kilometers undersea and 7 kilometers above the ground. Gas is then transported to Korea Gas Corporation’s facilities through the 7 kilometer long pipeline. |
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Onshore processing facilities |
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Onshore processing facilities consist of processing facility, electricity equipment, and office areas. The daily maximum processing capacity is 75 million cubic feet. |
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Operation and management |
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To maintain high standards in health, safety, and the environment (HSE), KNOC established the HSE management system. The system, which was certified with ISO 9001, ISO 14001, etc, was adopted for all of the company’s processes and facilities around the world.
KNOC has made systematic efforts to enhance its operations regarding the Donghae-1 and Donghae-2 gas fields. Policies and procedure established exclusively for the gas field include general policies for Donghae-1 and Donghae-2 gas fields; risk management procedure; onshore emergency response procedure; platform emergency response procedure; Permit to Work system; oil spill contingency plan; change procedure management; and inspection, measurement, and test equipment control procedure.
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Outlook |
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Production in the Donghae-1 gas field had Korea join the ranks of oil producing countries. This is significant for the country because it is now able to meet a part of its energy demand with natural gas produced in its own territory.
Through the Donghae-1 and Donghae-2 development project, KNOC accumulated experience and knowhow in all areas from exploration and development to production and distribution. The accumulated intangible assets will ultimately help Korea’s oil and gas industries improve their technologies and raise their competitiveness to the next level.
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Department Contacts Updated
| Updated : 2023-12-31 |
Department : Low Carbon Solutions Dept. |
Contacts : +82)52-216-4714 |
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