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Article: Evolution of abnormally low pressure and its implications for the hydrocarbon system in the southeast uplift zone of Songliao basin, China

TitleEvolution of abnormally low pressure and its implications for the hydrocarbon system in the southeast uplift zone of Songliao basin, China
Authors
Issue Date2003
PublisherAmerican Association of Petroleum Geologists. The Journal's web site is located at http://www.aapg.org/bulletin/index.cfm
Citation
Aapg Bulletin, 2003, v. 87 n. 1, p. 99-119 How to Cite?
AbstractUnderpressured formations are present in the southeast uplift of the Songliao basin, northeast China. At depths between 1540 and 3000 m, the Lower Cretaceous strata in the Shiwu depression of the basin are significantly underpressured at about 50-80% of hydrostatic pressure. Exploration for oil and gas indicates that the hydrocarbon distribution in the depression has unusual characteristics: gas pools occur in the central part of the depression, whereas oil pools occur at the marginal uplift; some gas reservoirs are located at a very shallow depth of 150-450 m. We investigate the mechanism of the abnormal pressures and the characteristics of the hydrocarbon distribution. Numerical modeling indicates that the basin was dominated by overpressure through much of its history and became underpressured only in recent geological time. The earlier overpressurization appears to be essential for the occurrence of the underpressure at the present. The origin of underpressure results primarily from uplift and erosion, as well as reduction of geothermal gradients. Our study also shows that evolution of formation pressure affects not only fluid flow but also hydrocarbon migration and accumulation and gas and oil distribution. The development of underpressure is, therefore, a major factor responsible for habitats of hydrocarbons in the study area.
Persistent Identifierhttp://hdl.handle.net/10722/151090
ISSN
2015 Impact Factor: 2.344
2015 SCImago Journal Rankings: 1.978
References

 

DC FieldValueLanguage
dc.contributor.authorXie, Xen_US
dc.contributor.authorJiao, JJen_US
dc.contributor.authorTang, Zen_US
dc.contributor.authorZheng, Cen_US
dc.date.accessioned2012-06-26T06:16:58Z-
dc.date.available2012-06-26T06:16:58Z-
dc.date.issued2003en_US
dc.identifier.citationAapg Bulletin, 2003, v. 87 n. 1, p. 99-119en_US
dc.identifier.issn0149-1423en_US
dc.identifier.urihttp://hdl.handle.net/10722/151090-
dc.description.abstractUnderpressured formations are present in the southeast uplift of the Songliao basin, northeast China. At depths between 1540 and 3000 m, the Lower Cretaceous strata in the Shiwu depression of the basin are significantly underpressured at about 50-80% of hydrostatic pressure. Exploration for oil and gas indicates that the hydrocarbon distribution in the depression has unusual characteristics: gas pools occur in the central part of the depression, whereas oil pools occur at the marginal uplift; some gas reservoirs are located at a very shallow depth of 150-450 m. We investigate the mechanism of the abnormal pressures and the characteristics of the hydrocarbon distribution. Numerical modeling indicates that the basin was dominated by overpressure through much of its history and became underpressured only in recent geological time. The earlier overpressurization appears to be essential for the occurrence of the underpressure at the present. The origin of underpressure results primarily from uplift and erosion, as well as reduction of geothermal gradients. Our study also shows that evolution of formation pressure affects not only fluid flow but also hydrocarbon migration and accumulation and gas and oil distribution. The development of underpressure is, therefore, a major factor responsible for habitats of hydrocarbons in the study area.en_US
dc.languageengen_US
dc.publisherAmerican Association of Petroleum Geologists. The Journal's web site is located at http://www.aapg.org/bulletin/index.cfmen_US
dc.relation.ispartofAAPG Bulletinen_US
dc.titleEvolution of abnormally low pressure and its implications for the hydrocarbon system in the southeast uplift zone of Songliao basin, Chinaen_US
dc.typeArticleen_US
dc.identifier.emailJiao, JJ:jjiao@hku.hken_US
dc.identifier.authorityJiao, JJ=rp00712en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0037218769en_US
dc.identifier.hkuros81088-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037218769&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume87en_US
dc.identifier.issue1en_US
dc.identifier.spage99en_US
dc.identifier.epage119en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridXie, X=7402761346en_US
dc.identifier.scopusauthoridJiao, JJ=7102382963en_US
dc.identifier.scopusauthoridTang, Z=14012663900en_US
dc.identifier.scopusauthoridZheng, C=7401934994en_US

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