Buried-Hill discoveries of the Damintun depression in north China

Journal Article · Mon Apr 01 04:00:00 EST 1991 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

DOI:https://doi.org/10.1306/0C9B2849-1710-11D7-8645000102C1865D· OSTI ID:5849505

XiaoGuang, Tong; Zuan, Huang ^[1]

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1. Research Institute of Petroleum Exploration and Development, Beijing (China)

Several buried-hill oil fields recently have been found in the Damintun depression. All the buried hills except one consist of Archean metamorphic rocks. Of these, the Dongshenpu buried hill is the largest. The metamorphic rocks have no original porosity but have secondary porosity, such as weathering fractures, structural fractures, brecciated pores, secondary corrosion pores, and secondary replacement pores. Fractures, especially structural fractures, form the only migration passages and main reservoir spaces for hydrocarbons in the buried hill. Crude oil comes from Paleogene continental source rocks and is very waxy. Based on the interpretation of log data, the porosity averages 3.24%. According to calculations using pressure build-up curves, the effective permeability averages 0.140 {mu}m{sup 2}.

• OSTI ID: 5849505
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (United States), Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Vol. 75:4; ISSN AABUD; ISSN 0149-1423
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
ASIA
CENOZOIC ERA
CHINA
CRYSTAL STRUCTURE
FRACTURED RESERVOIRS
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
METAMORPHIC ROCKS
MICROSTRUCTURE
MINERAL RESOURCES
PERMEABILITY
PETROLEUM DEPOSITS
POROSITY
RESERVOIR ROCK
RESOURCES
ROCKS
SEDIMENTARY BASINS
TERTIARY PERIOD