File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Abnormal fluid pressures caused by deposition and erosion of sedimentary basins

TitleAbnormal fluid pressures caused by deposition and erosion of sedimentary basins
Authors
KeywordsAbnormal Pressure
Basin Hydrogeology
Fluid Compartment
Overpressured
Underpressured
Issue Date1998
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhydrol
Citation
Journal of Hydrology, 1998, v. 204 n. 1-4, p. 124-137 How to Cite?
AbstractGravitational loading or unloading due to deposition or erosion in sedimentary basins is one of the most common mechanisms responsible for abnormal fluid pressures in geologic formations. This paper examines the integrated response of fluid pressures to both deposition and erosion using vertical one-dimensional numerical models. The modeling results show that vertical loading and unloading of sedimentary basins containing thick interbeds of low permeability can give rise to abnormal fluid pressure-depth trends that closely resemble those observed in the field. On a geological time scale, an under-pressured formation may become normally pressured or over-pressured and vice versa because of transient flow induced by vertical geologic movements. A case study in the Guymon area of Texas County, Oklahoma, shows that there are two underpressured reservoirs in this area. The burial curve constructed from geologic information indicates that this area has undergone multiple subsidence and uplift events. Based on stratigraphic information, a vertical geologic section of this area is represented by a numerical model consisting of two reservoir formations and two shale (confining) units. The numerical model is able to reproduce the observed pressure abnormalities based on the drill-stem test (DST) data. The hydraulic conductivities of the two shale formations are estimated to be 4.2 x 10-14 and 5.1 x 10-14 m s-1 from model calibration. | Gravitational loading or unloading due to deposition or erosion in sedimentary basins is one of the most common mechanisms responsible for abnormal fluid pressures in geologic formations. This paper examines the integrated response of fluid pressures to both deposition and erosion using vertical one-dimensional numerical models. The modeling results show that vertical loading and unloading of sedimentary basins containing thick interbeds of low permeability can give rise to abnormal fluid pressure-depth trends that closely resemble those observed in the field. On a geological time scale, an under-pressured formation may become normally pressured or over-pressured and vice versa because of transient flow induced by vertical geologic movements. A case study in the Guymon area of Texas County, Oklahoma, shows that there are two underpressured reservoirs in this area. The burial curve constructed from geologic information indicates that this area has undergone multiple subsidence and uplift events. Based on stratigraphic information, a vertical geologic section of this area is represented by a numerical model consisting of two reservoir formations and two shale (confining) units. The numerical model is able to reproduce the observed pressure abnormalities based on the drill-stem test (DST) data. The hydraulic conductivities of the two shale formations are estimated to be 4.2×10-14 and 5.1×10-14 m s-1 from model calibration.
Persistent Identifierhttp://hdl.handle.net/10722/151010
ISSN
2015 Impact Factor: 3.043
2015 SCImago Journal Rankings: 1.743
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorJiao, JJen_US
dc.contributor.authorZheng, Cen_US
dc.date.accessioned2012-06-26T06:15:46Z-
dc.date.available2012-06-26T06:15:46Z-
dc.date.issued1998en_US
dc.identifier.citationJournal of Hydrology, 1998, v. 204 n. 1-4, p. 124-137en_US
dc.identifier.issn0022-1694en_US
dc.identifier.urihttp://hdl.handle.net/10722/151010-
dc.description.abstractGravitational loading or unloading due to deposition or erosion in sedimentary basins is one of the most common mechanisms responsible for abnormal fluid pressures in geologic formations. This paper examines the integrated response of fluid pressures to both deposition and erosion using vertical one-dimensional numerical models. The modeling results show that vertical loading and unloading of sedimentary basins containing thick interbeds of low permeability can give rise to abnormal fluid pressure-depth trends that closely resemble those observed in the field. On a geological time scale, an under-pressured formation may become normally pressured or over-pressured and vice versa because of transient flow induced by vertical geologic movements. A case study in the Guymon area of Texas County, Oklahoma, shows that there are two underpressured reservoirs in this area. The burial curve constructed from geologic information indicates that this area has undergone multiple subsidence and uplift events. Based on stratigraphic information, a vertical geologic section of this area is represented by a numerical model consisting of two reservoir formations and two shale (confining) units. The numerical model is able to reproduce the observed pressure abnormalities based on the drill-stem test (DST) data. The hydraulic conductivities of the two shale formations are estimated to be 4.2 x 10-14 and 5.1 x 10-14 m s-1 from model calibration. | Gravitational loading or unloading due to deposition or erosion in sedimentary basins is one of the most common mechanisms responsible for abnormal fluid pressures in geologic formations. This paper examines the integrated response of fluid pressures to both deposition and erosion using vertical one-dimensional numerical models. The modeling results show that vertical loading and unloading of sedimentary basins containing thick interbeds of low permeability can give rise to abnormal fluid pressure-depth trends that closely resemble those observed in the field. On a geological time scale, an under-pressured formation may become normally pressured or over-pressured and vice versa because of transient flow induced by vertical geologic movements. A case study in the Guymon area of Texas County, Oklahoma, shows that there are two underpressured reservoirs in this area. The burial curve constructed from geologic information indicates that this area has undergone multiple subsidence and uplift events. Based on stratigraphic information, a vertical geologic section of this area is represented by a numerical model consisting of two reservoir formations and two shale (confining) units. The numerical model is able to reproduce the observed pressure abnormalities based on the drill-stem test (DST) data. The hydraulic conductivities of the two shale formations are estimated to be 4.2×10-14 and 5.1×10-14 m s-1 from model calibration.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhydrolen_US
dc.relation.ispartofJournal of Hydrologyen_US
dc.rightsJournal of Hydrology. Copyright © Elsevier BV.-
dc.subjectAbnormal Pressureen_US
dc.subjectBasin Hydrogeologyen_US
dc.subjectFluid Compartmenten_US
dc.subjectOverpressureden_US
dc.subjectUnderpressureden_US
dc.titleAbnormal fluid pressures caused by deposition and erosion of sedimentary basinsen_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.doi10.1016/S0022-1694(97)00115-7en_US
dc.identifier.scopuseid_2-s2.0-0032579298en_US
dc.identifier.hkuros33846-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032579298&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume204en_US
dc.identifier.issue1-4en_US
dc.identifier.spage124en_US
dc.identifier.epage137en_US
dc.identifier.isiWOS:000072288500009-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridJiao, JJ=7102382963en_US
dc.identifier.scopusauthoridZheng, C=7401934994en_US

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats