PVTX history of the North Sea's Judy oilfield

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doi: 10.1016/S0375-6742(00)00066-2
Authors:Aplin, A. C.; Larter, S. R.; Bigge, M. A.; Macleod, G.; Swarbrick, R. E.; Grunberger, D.
Author Affiliations:Primary:
University of Newcastle, NRG, Newcastle upon Tyne, United Kingdom
University of Durham, United Kingdom
Volume Title:Proceedings of Geofluids III; third international conference on Fluid evolution, migration and interaction in sedimentary basins and orogenic belts
Volume Authors:Pueyo, J. J., editor; Cardellach, E.; Bitzer, K.; Taberner, C.
Source:Journal of Geochemical Exploration, Vol.69-70, p.641-644; Geofluids III; third international conference on Fluid evolution, migration and interaction in sedimentary basins and orogenic belts, Barcelona, Spain, July 12-14, 2000, edited by J. J. Pueyo, E. Cardellach, K. Bitzer and C. Taberner. Publisher: Elsevier, Amsterdam-New York, International. ISSN: 0375-6742
Publication Date:2000
Note:In English. 4 refs.; illus.
Summary:Volumetric liquid:vapour ratios generated using a Confocal Laser Scanning Microscope are used along with PVT modelling software to estimate the composition, PT phase envelope and isochore of single petroleum inclusions in the North Sea's Judy field. The data are used to quantify pressure histories and to determine the compositional evolution of petroleum in the field. Important constraints are also placed on the permeability structure and history of the overlying chalk. Key conclusions are: (1) quartz cementation and the emplacement of low Gas-Oil Ratio oil occurred 1-3 Ma ago in a significantly overpressured regime; (2) the present gas condensate was formed by the injection of gas-rich petroleum into a specific part of the field. Analysis of other North Sea fields suggests that many gas condensates form by the engulfment of oils by later gas. Abstract Copyright (2000) Elsevier, B.V.
Subjects:Cementation; Composition; Condensates; Diagenesis; Fluid inclusions; Fluid injection; Fluid pressure; Framework silicates; Inclusions; Laser methods; Natural gas; Oil and gas fields; Overpressure; Permeability; Petroleum; Pressure; Quartz; Reservoir rocks; Silica minerals; Silicates; Atlantic Ocean; North Atlantic; North Sea; Judy Field
Abstract Numbers:03M/4301
Record ID:2000061415
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
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