Diagenetic Albitization of Detrital K-feldspar in Jurassic, Lower Cretaceous, and Tertiary Clastic Reservoir Rocks from Offshore Norway, I. Textures and Origin

The Carnarvon Basin is Australia's leading producer of both liquid hydrocarbons and gas. Most oil production to date has come from the Barrow Sub-basin. The success of the Sub-basin is due to a fortuitous combination of good Mesozoic source rocks which have been generating over a long period of time, Lower Cretaceous reservoir rocks with excellent porosity and permeability, and a thick and effective regional seal.A feature of Barrow Sub-basin fields is that they generally produce far more petroleum than is initially estimated and booked, a result of the excellent reservoir quality of the principal producing reservoirs.Structural traps immediately below the regional seal (the 'top Barrow play') have been the most successful play to date. Analysis of 'new' and 'old' play concepts show that the Sub-basin has potential for significant additional hydrocarbon reserves.

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Lower Cretaceous stratigraphic characteristics and tectonic control of the eastern depression, North Yellow Sea Basin, North China

Canadian Journal of Earth Sciences ◽

10.1139/cjes-2019-0074 ◽

2020 ◽

Vol 57 (10) ◽

pp. 1180-1192

Author(s):

Zhen Zhang ◽

Rihui Cheng ◽

Yanjie Shen ◽

Liaoliang Wang ◽

Xiaoqiang Hu ◽

...

Keyword(s):

Yellow Sea ◽

Lower Cretaceous ◽

North China ◽

Strike Slip ◽

Lateral Movement ◽

Third Order ◽

Reservoir Rocks ◽

North Yellow Sea ◽

The North

The Lower Cretaceous of the eastern depression in the North Yellow Sea Basin is a set of residual strata that can be divided into K1sq1 and K1sq2 sequences. There are four lithology–lithofacies architectures summarized in the third-order sequences of wells W5, W3, W1, W9, W16, W7, W8, and W10, and they are the coarse–fine–coarse, asymmetric coarse–fine, asymmetric fine–coarse, and interbedded coarse and fine. F1, F4, F6, and F7, which are strike-slip faults, were dominant during the Early Cretaceous, and controlled the eastern depression to undergo right-lateral movement from transtension to transpression. The tectonic movement controlled different stratigraphic structure in different areas, and the fan bodies deposited along the basin margin and progradated into the basin center. The sequence models under extensional and strike-slip setting were established respectively. The transtension–transpression movement controlled the development of the sandstones in the Lower Cretaceous and improved the quality of the reservoir rocks.

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Abstract: Sedimentological and Geochemical Evidence of High Frequency Climatic Cycles Controlling the Deposition of Source and Reservoir Rocks in a Lower Cretaceous Rift Lake, Sergipe-Alagoas Basin, Brazil

AAPG Bulletin ◽

10.1306/00aa808a-1730-11d7-8645000102c1865d ◽

1998 ◽

Vol 82 ◽

Cited By ~ 1

Author(s):

AZAMBUJA FILHO, NILO C. DE; L. M. A

Keyword(s):

Lower Cretaceous ◽

High Frequency ◽

Reservoir Rocks ◽

Geochemical Evidence ◽

Climatic Cycles ◽

Rift Lake

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Carbonate cementation in Upper Eocene clastic reservoir rocks from the North Alpine Foreland Basin (Austria)

Austrian Journal of Earth Sciences ◽

10.17738/ajes.2017.0005 ◽

2017 ◽

Vol 110 (1) ◽

Author(s):

Marie-Louise Grundtner ◽

Doris Gross ◽

Reinhard Gratzer ◽

David Misch ◽

Reinhard F. Sachsenhofer ◽

...

Keyword(s):

Foreland Basin ◽

Upper Eocene ◽

Reservoir Rocks ◽

The North ◽

North Alpine Foreland Basin ◽

Alpine Foreland ◽

Alpine Foreland Basin ◽

Carbonate Cementation ◽

Clastic Reservoir

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Cretaceous Subsurface Geology of the Middle East Region

GeoArabia ◽

10.2113/geoarabia0203239 ◽

1997 ◽

Vol 2 (3) ◽

pp. 239-256 ◽

Cited By ~ 6

Author(s):

Louis Christian

Keyword(s):

Middle East ◽

Lower Cretaceous ◽

Oil And Gas ◽

Regional Scale ◽

Reservoir Rocks ◽

Subsurface Geology ◽

Oil And Gas Fields ◽

East Region ◽

Isopach Maps ◽

Gas Fields

ABSTRACT A regional structure contour map at Near Top Cretaceous is based on hundreds of well tops from extensive bibliographic references from throughout the Middle East. This structure map shows strong basin asymmetry. Major faults are shown in outcrop and/or suspected at basement or intermediate levels, based in part on gravity and magnetics modeling, published and in ‘open file’ studies. Major uplifts associated with several super-giant oil and gas fields are clearly indicated even at the shallow Cretaceous level (Ghawar Anticline, Qatar Arch, Burgan-Khurais Trend, etc.), even at a very regional scale with a contour interval of 1,000 feet. Isopach maps of Upper, Middle, and Lower Cretaceous are contoured at intervals of 500 feet. Each of these three isopach maps is overprinted in color to show generalized lithofacies trends. Lower and Middle Cretaceous deltaic sandstone fairways on the western shelf provide excellent reservoir rocks for a trend containing many of the world’s very largest oil fields. Somewhat more basinward, predominantly carbonate facies include oil reservoirs in the Upper, Middle, and Lower Cretaceous. Deepest facies lie beneath the Zagros Foothills Belt in coastal Iran and eastern Iraq. This is particularly true for the Upper Cretaceous, where Coniacian to Maestrichtian thick, deep basinal shales, cherts, clastic turbidites, and slumped exotic blocks of ophiolites mark the northeastern border of the Late Cretaceous basin as it approaches the Main Zagros Fault and an assumed subduction zone underthrusting the Iranian Plate or Eurasia.

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