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Regional
studies on the geological structure of the Yellow Sea
were made in a joint survey supported by CCOP in 1969.
And airborne magnetic survey was also conducted in the
Yellow Sea and South sea and the southern part of the
East Sea. Regional basin-scale studies on the concession
blocks were made based on gravity, magnetic, seismic,
and drilling data. Initially, foreign oil companies started
to explore around the Korean peninsula. Early exploration
led to the seismic survey of 55,810 L-Km and the exploratory
drilling of 19 wells, which confirmed the hydrocarbon
potential and the presence of large sedimentary basins.
Since 1983, Korea National Oil Corporation has played
a major role in exploration, and has conducted seismic
survey and drilling. These efforts led to the discovery
of a fine-quality gas layer at the East Sea in 1998. The
gas field contains 210 billion cubic ft of recoverable
reserves. |
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In
the Yellow Sea, continuous efforts have been made
to explore hydrocarbon in the concession blocks.
Although regional basin analysis in the eastern
part of the Yellow Sea was investigated by Gulf
Oil, additional data were acquired and reinterpreted
in 1987 by Marathon Oil in cooperation with KNOC.
Twenty holes have since been drilled throughout
the Yellow Sea basins. A number of offshore exploratory
wells have been drilled, revealing hydrocarbon potential
in the East China sea. In the East Sea, studies
have focused in the Ulleung Basin and its surrounding
margins. With the start up of construction of production
facilities in July 2001, KNOC will be able to produce
its own natural gas. |
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| Summary |
|
-
60's
|
: |
Regional
Studies on the Geological Structure |
|
-
70's
|
: |
Regional
data Acquisition by Foreign Oil Companies |
|
-
80's
|
: |
Intensive
Data Acquisition and Interpretation by KNOC |
|
-90's
|
: |
Discovery
of Donghae-1 Gas Field |
|
2002
|
: |
Currently
Donghae-1 Gas Field is being developed |
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