Migration and trapping of the Ionian series hydrocarbons (Epirus, NW Greece)

Karakitsios, V.; Rigakis, N.; Bakopoulos, I.

doi:10.12681/bgsg.17200

Cited by 10 publications

(18 citation statements)

References 3 publications

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“…They have mainly been observed in faults, or in the contacts between the limestones and the overlying units (flysch, Burdigalian). Most exploration wells which have been drilled in the Ionian zone in the Epirus region have also provided some evidence for oil at depth (Karakitsios et al, 2001). Thus (Fig.…”

Section: Hydrocarbon Volumesmentioning

confidence: 93%

“…Hydrocarbon exploration activities in Western Greece have led in the past to the study of potential source rocks, mainly in the Ionian zone, while structural and stratigraphic trapping possibilities have also been discussed (IGRS-IFP, 1966;BP, 1971;Chiotis, 1983;Palakas et al, 1986;Jenkyns, 1988;Karakitsios, 1995;Roussos and Marnelis, 1995;Kamberis et al, 1996;Karakitsios and Rigakis, 1996;Rigakis andKarakitsios, 1998, Rigakis, 1999;Karakitsios et al, 2001;Zelilidis et al, 2003;Karakitsios, 2003;Rigakis et al, 2004). Data from these studies are reviewed in the following sections and is integrated with new data on potential source rocks in the Pre-Apulian zone.…”

Section: Oil Potentialmentioning

confidence: 99%

“…3) with source-rock potential have been recorded in the Ionian zone. These include the Vigla shales or "Upper Siliceous zone" of IGRS-IFP (1966) (Albian -Turonian); the Upper Posidonia Beds (Callovian -Tithonian); the Lower Posidonia Beds and the coeval marls at the base of the Ammonitico Rosso (Toarcian); and the shales incorporated within the Triassic breccias (Karakitsios, 1995;Karakitsios and Rigakis, 1996;Rigakis and Karakitsios, 1998;Karakitsios et al, 2001;Karakitsios et al, 2002). All these potential source rocks have good hydrocarbon potential and contain Type I to II OM (Karakitsios and Rigakis, 1996;Rigakis and Karakitsios, 1998).…”

Section: The Ionian Zonementioning

confidence: 99%

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Evolution and Petroleum Potential of Western Greece

Karakitsios

Rigakis

2007

Journal of Petroleum Geology

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112

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siliceous facies are widely associated with organic-carbon rich deposits. Pelagic Late Jurassic units rich in marine organic matter constitute important hydrocarbon source rocks in the pelagicneritic Pre-Apulian zone succession. Oil-oil correlation with an Apulian zone oil sample (from Aquila, Italy) indicates similar geochemical characteristics. Thus, the significant volumes of oil generated by the rich and mature source rock intervals identified in the Pre-Apulian zone are likewise expected to be of good quality. In the Ionian zone, four organic-carbon rich intervals with hydrocarbon potential have been recorded.The tectonic history of the Pre-Apulian zone, which is characterised by the presence of large anticlines, is favourable for the formation of structural traps. By contrast, locations suitable for the entrapment of hydrocarbons in the Ionian zone are restricted to small anticlines within largerscale synclinal structures. Hydrocarbon traps may potentially be present at the tectonic contacts between the Ionian zone and both the Pre-Apulian and Gavrovo zones. Major traps may also have been formed between the pre-evaporitic basement and the evaporite-dominated units at the base of both the Pre-Apulian and the Ionian zone successions. The degree of participation of the subevaporitic basement in the deformation of the Pre-Apulian and Ionian sedimentary cover will determine the location and size of these traps.Various scenarios regarding the deformation of the sub-evaporitic succession are examined in order to determine the hydrocarbon trapping possibilities of each model. The hypothesis of continental subduction (Early

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Section: Hydrocarbon Volumesmentioning

confidence: 93%

Section: Oil Potentialmentioning

confidence: 99%

Section: The Ionian Zonementioning

confidence: 99%

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Evolution and Petroleum Potential of Western Greece

Karakitsios

Rigakis

2007

Journal of Petroleum Geology

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112

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“…Systematic research since 1960 (IGRS-IFP, 1966;BP, 1971;Monopolis, 1977;Chiotis, 1983;C. Nikolaou, 1986, personal communication;Palakas et al, 1986;Karakitsios, 1992Karakitsios, , 1995Roussos and Marnelis, 1995;Karakitsios and Rigakis, 1996;Rigakis and Karakitsios, 1998;Karakitsios et al, 2001; Zelilidis et al, 2003;Rigakis et al, 2004;Karakitsios and Rigakis, 2007;Marnelis et al, 2007) has proven now that western Greece is characterized by rich source rocks of significant thickness, located in the Ionian and pre-Apulian (Paxos) zones. Limited early exploration focused on the abundant oil shows (Monopolis, 1977), and more recent exploration did not give encouraging results (Xenopoulos, 2000), although both Albania and Italy host substantial oil and gas fields (Mattavelli and Novelli, 1990;Van Greet et al, 2002;Mavromatidis et al, 2004;Roure et al, 2004;Graham Wall et al, 2006;Vilasi et al, 2009;Maravelis et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Western Greece and Ionian Sea petroleum systems

Karakitsios¹

2013

Bulletin

119

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In western Greece, the Ionian and pre-Apulian zones represent, respectively, the basin and the transitional zone (slope) to the Apulian platform. The Apulian platform constitutes the weakly deformed foreland of the external Hellenides. The pre-Apulian zone appears in the Ionian Islands and the eastern Ionian Sea, whereas the Apulian platform is exclusively found in the Ionian Sea. The Ionian zone consists of Triassic evaporites, Jurassic–upper Eocene (mostly pelagic carbonates, minor cherts, and shales), overlain by the Oligocene flysch. Organic-rich source rocks occur within Triassic evaporites and Jurassic–Cretaceous pelagic argillaceous-siliceous rocks. The pre-Apulian zone consists of Triassic to Miocene deposits, mainly mixed neritic-pelagic carbonates. Hydrocarbon source rocks include pelagic and hemipelagic deposits rich in marine organic material, although terrigenous organic matter is also found in siliciclastic layers. Apulian platform source rocks are mainly the organic-rich shales within the Triassic Burano evaporites. Western Greece contains major petroleum systems, which extend into the Ionian Sea. Ionian, pre-Apulian, and Apulian petroleum systems contribute to the probable hydrocarbon accumulations within the big offshore (Ionian Sea) anticlines. Western Greece contains important oil and gas shale reservoirs with a potential of unconventional exploration. Promising areas for hydrocarbons need systematic and detailed three dimensional seismic data. Exploration for conventional petroleum reservoirs, through the interpretation of seismic profiles and the abundant surface geologic data, will provide the subsurface geometric characteristics of the unconventional reservoirs. Their exploitation should follow that of conventional hydrocarbons to benefit from the anticipated technological advances, eliminating environmental repercussions

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“…), making the area among the most promising, with respect to hydrocarbon prospectivity (Rigakis and Karakitsios, 1998;Zelilidis et al, 2003;Mavromatidis, 2009;Maravelis et al, 2012;Karakitsios, 2014). Research that conducted since 1960 demonstrated that western Greece hosts thick, organic-rich source rocks, located within both Ionian and pre-Apulian zones (IGRS-IFP, 1996;BP, 1971;Karakitsios, 1992;Karakitsios and Rigakis, 1996;Karakitsios et al, 2001;Zelilidis et al, 2003;Karakitsios and Rigakis, 2007;Maravelis et al, 2014). The nearby hydrocarbon discoveries and fields in Italy and Albania may be valid analogs since they share much of their geological history with western Greece.…”

Section: Introductionmentioning

confidence: 99%