Hydrocarbon migration history, West of Shetland: integrated fluid inclusion and fission track studies

1999 ◽  
Vol 5 (1) ◽  
pp. 613-625 ◽  
Author(s):  
J. PARNELL ◽  
P. F. CAREY ◽  
P. GREEN ◽  
W. DUNCAN
Keyword(s):  
Fluid Inclusion ◽  
Fission Track ◽  
Hydrocarbon Migration ◽  
Migration History

Clumped isotope geothermometry of an Ordovician carbonate mound, Hudson Bay Basin

2020 ◽  
Vol 178 (1) ◽  
pp. jgs2020-102
Author(s):  
Josué J. Jautzy ◽  
Martine M. Savard ◽  
Denis Lavoie ◽  
Omid H. Ardakani ◽  
Ryan S. Dhillon ◽  
...  
Keyword(s):  
Fluid Inclusion ◽  
Oil And Gas ◽  
Fission Track ◽  
Hudson Bay ◽  
Apatite Fission Track ◽  
Burial Diagenesis ◽  
Carbonate Mound ◽  
History Of ◽  
Homogenization Temperatures ◽  
Clumped Isotope

The Hudson Bay sedimentary basin was overlooked geologically until two decades ago. Recent efforts to understand the palaeogeothermal history of this basin have led to the evaluation of fluid inclusion microthermometry, apatite fission track, organic matter reflectance and Rock–Eval analyses. Although apatite fission track and organic maturity indicators tend to show relatively low maximum burial temperatures (60–80°C), evidence of potential oil slicks on the sea surface and oil and gas shows in offshore wells have been reported across Hudson Bay. Fluid inclusion microthermometry in a carbonate mound sequence suggests homogenization temperatures of 118 ± 25 and 93 ± 10°C for recrystallized synsedimentary marine calcite and late pore-filling burial calcite, respectively. This sequence provides an interesting geological framework to test the application of clumped isotope thermometry against independent geothermometers. Here, we present clumped isotope data acquired on the late calcite cements and diagenetically altered early marine phases. The integration of clumped isotopic data with other thermal indicators allows the reconstruction and refinement of the thermal–diagenetic history of these carbonates by confirming an episode of heating, probably of hydrothermal origin and prior to normal burial diagenesis, that reset both fluid inclusions and the clumped isotope indicators without recrystallization.

OIL MIGRATION HISTORY OF THE OFFSHORE CANNING BASIN

2000 ◽  
Vol 40 (2) ◽  
pp. 133 ◽  
Author(s):  
M. Lisk ◽  
J. Ostby ◽  
N.J. Russell ◽  
G.W. O’Brien
Keyword(s):  
Fluid Inclusion ◽  
Acid Leaching ◽  
Reservoir Quality ◽  
Oil Migration ◽  
North West ◽  
Canning Basin ◽  
Carbonate Cement ◽  
Migration History ◽  
Potential Reservoir ◽  
Porosity And Permeability

The dual issues of the presence or absence of a viable, oil-prone petroleum system and reservoir quality represent key exploration uncertainties in the lightly explored Offshore Canning Basin, North West Shelf. To better quantify these factors, a detailed fluid inclusion investigation of potential reservoir horizons within the basin has been undertaken. The results have been integrated with regional petroleum geology and Synthetic Aperture Radar (SAR) oil seep data to better understand the oil migration risk in the region.The fluid inclusion data provide confirmation of widespread oil migration at multiple Mesozoic and Palaeozoic levels, including those wells that are remote from the likely source kitchens. The lack of evidence for present or palaeo-oil accumulations is consistent with the proposition that none of the currently water-wet wells appear to have tested a valid structure. These observations, when combined with the presence of numerous direct hydrocarbon indicators on seismic data and a number of oil slicks (from SAR data) at the basin’s edge, suggest that the potential for oil charge to valid structures is much higher than previously recognised.Petrographic analysis of the tight, gas-bearing, Triassic sandstones in Phoenix–1 suggests that the low porosity and permeability is the result of late poikilotopic carbonate cement. Significantly, the presence of oil inclusions within quartz overgrowths that pre-date the carbonate indicates that oil migration began prior to crystallisation of carbonate. Fluid inclusion palaeotemperatures combined with a 1D basin model suggest that trapping of oil as inclusions occurred in the Early to Middle Cretaceous and that predictions of reservoir quality using available water-wet wells could seriously under-estimate porositypermeability levels in potential traps that were charged with oil at about 100 Ma. Indeed, acid leaching of core plugs from Phoenix–1 indicates that removal of diagenetic carbonate results in significant permeability increase with obvious implications for the producibility of any future oil discovery. Further, evidence of Early Cretaceous oil charge has implications for the size and locality of source kitchens compared to that observed at the current day.Collectively, the data indicate the area has received widespread oil migration and suggest future exploration, even to relatively deep levels, may be successful if valid traps can be delineated.

Evolution of hydrocarbon migration style in a fractured reservoir deduced from fluid inclusion data, Clair Field, west of Shetland, UK

2008 ◽  
Vol 25 (2) ◽  
pp. 153-172 ◽  
Author(s):  
Martin Baron ◽  
John Parnell ◽  
Darren Mark ◽  
Andrew Carr ◽  
Milosz Przyjalgowski ◽  
...  
Keyword(s):  
Fluid Inclusion ◽  
Fractured Reservoir ◽  
Hydrocarbon Migration ◽  
Fluid Inclusion Data

scholarly journals Indication of hydrocarbon migration in the Western Mecsek Mountains evidenced by fluid inclusion chemostratigraphy

2020 ◽  
Vol 150 (4) ◽  
pp. 611
Author(s):  
Sándor Körmös ◽  
Georgina Lukoczki ◽  
Félix Schubert
Keyword(s):  
Fluid Inclusion ◽  
Volatile Compounds ◽  
Fluid Inclusions ◽  
Middle Triassic ◽  
Fluorescent Properties ◽  
Hydrocarbon Migration ◽  
Solid Bitumen ◽  
Saddle Dolomite

Primary and secondary hydrocarbon-bearing fluid inclusion (HCFI) assemblages occur in the Middle Triassic Lapis Limestone in the Szuadó Valley of the Western Mecsek Mts. The primary HCFIs were trapped in saddle dolomite crystals, and the secondary HCFIs were enclosed in calcite neospar and fracture-filling calcite. Solid bitumen is also present along fractures. The volatile compounds liberated from fluid inclusions are characterized by non-hydrocarbon and hydrocarbon species. The fluorescent properties of HCFIs, the occurrence of the solid bitumen, as well as the composition of inclusion oils indicate the migration of light oils through the Lapis Limestone. Petrographic observations suggest a prolonged oil charge event, which resulted in HCFIs beeing trapped under evolving diagenetic conditions.

Hydrocarbon migration in the Porcupine Basin, offshore Ireland: evidence from fluid inclusion studies

2010 ◽  
Vol 16 (1) ◽  
pp. 67-76 ◽  
Author(s):  
J. Conliffe ◽  
N. F. Blamey ◽  
M. Feely ◽  
J. Parnell ◽  
A. G. Ryder
Keyword(s):  
Fluid Inclusion ◽  
Hydrocarbon Migration ◽  
Porcupine Basin
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