Petroleum geology of Sakhalin Island, USSR

Conference · Tue May 01 04:00:00 EDT 1990 · AAPG Bulletin (American Association of Petroleum Geologists); (USA)

OSTI ID:6916962

Silverman, M R ^[1]

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1. Gustavson Associates, Inc., Boulder, CO (USA)

Sakhalin is a long, narrow island approximately the size of Hokkaido, consisting of two coastal mountain ranges and a central valley. It is located 10-300 km (6-190 mi) east of the Soviet mainland in the Sea of Okhotsk. The island is cored by Cretaceous and older rocks that comprise a fold belt characteristic of plate collision and accretion tectonics. Cenozoic deformation has produced numerous asymmetric compressional anticlines, many of which produce oil and gas. Reservoirs are primarily Miocene and Pliocene fluvial and deltaic sandstones, related to the paleo-Amur river. Oil is also being produced from fractured diatomites similar to California's Monterey Formation. Most fields have numerous stacked pay zones. Source rocks and seals are deltaic and marine shales. Production is limited to several troughs of folded Tertiary sediments; the most important basins in terms of hydrocarbon production and potential are the North Sakhalin basin, the Pogranich graben, the Terpeniya basin, and the Aniva gulf. Significant production has been established in the North Sakhalin basin since the 1920s, but reserves in the other basins are minor. Sakhalin has produced 400-600 MMBO and 0.5-1.2 tcf of gas from over 60 fields, most of which are onshore. As the Soviet Union's only secure source of petroleum in the Far East, Sakhalin's reserves have a strategic importance far exceeding their market value. Current oil production rate is 17-18 MMBO/yr. A gas pipeline connecting Sakhalin with the Soviet mainland was completed in 1987 and is expected to boost gas output to 100 bcf of gas/year by 1990. The largest fields are located on Sakhalin's northeast coast and include Okha (200 MMBO, onshore) and recently discovered Chayvo (240 MMBO and 4.2 tcf of gas, offshore). Sakhalin's greatest hydrocarbon potential lies offshore, where exploration is less mature.

• OSTI ID: 6916962
• Report Number(s): CONF-900605--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (USA) Journal Volume: 74:5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000 -- Geosciences
ASIA
CENOZOIC ERA
CRETACEOUS PERIOD
EASTERN EUROPE
EUROPE
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC TRAPS
GEOLOGY
MATURATION
MESOZOIC ERA
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PETROLEUM GEOLOGY
RESERVOIR ROCK
RESOURCES
SOURCE ROCKS
TERTIARY PERIOD
USSR