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Calibrated petrophysical model for elevated organic matter intervals and mineralogical variability in the Agrio Formation, Neuquén Basin, Argentina. Raul I. Ochoa, Lauren P. Birgenheier, Ernesto Schwarz, Jesús M. Salazar. Article 105913.The Upper Cretaceous Niobrara Formation in the Denver Basin was deposited under pelagic and hemipelagic conditions in well-oxygenated to progressively dysoxic (possibly anoxic) bottom waters (Da Gama et al., 2014). Well 3, drilled in Weld County, Colorado, USA, was investigated in the current study (Fig. 2 A).New data on cranial measurements and body length of the mosasaur, Tylosaurus nepaeolicus (Squamata; Mosasauridae), from the Niobrara Formation of Western Kansas. Transactions of the Kansas Academy ...concentrations in Niobrara-influenced inflows were 288%, 863%, and 155%, respectively, greater than median concentrations where the Niobrara Formation was absent. IdentificationAbstract. The Powder River Basin (PRB) unconventional source rock play in Upper Cretaceous Niobrara Formation is exploits up to four different landing zones, …Niobrara Total Petroleum System in the Southwestern ... - USGS. EN. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk ...Pierre Shale and Niobrara Formation (Campanian to Coniacian) at surface, covers 0.9 % of this area. Pierre Shale and Niobrara Formation. Middle Tertiary volcaniclastic sedimentary units (Oligocene to upper Eocene) at surface, covers 0.9 % of this area. Mostly syneruptive volcaniclastic sedimentary aprons. Lower units dominantly derived from ...The Niobrara Formation was deposited during the latter transgression from the Late Turonian to the Early Campanian (Scott and Cobban, 1964, Locklair et al., 2011) and is formally divided into two members: the basal Fort Hays Limestone and the overlying Smoky Hill Chalk (Fig. 1).Summary. Since 1981, nearly 1,000 wells have been drilled in the Denver basin of northeastern Colorado with the Codell sandstone as their primary target. The majority of this exploration has been in the axial portion of the basin, in Townships 4 to 7 North, Ranges 64 to 68 West, in Weld and Larimer counties. Drilling depths of Codell wells range from 6,800 to 7,400 ft [2073 to 2256 m].Recently ...Additional publication details. The lower shaly member of the Cody Shale in the Bighorn Basin, Wyoming and Montana is Coniacian to Santonian in age and is equivalent to the upper part of the Carlile Shale and basal part of the Niobrara Formation in the Powder River Basin to the east. The lower Cody ranges in thickness from 700 to 1,200 feet and ...People have long known that the Niobrara is thick, rich in organics and thermally mature. Oil has flowed from the Niobrara since the dawn of the industry: Florence Field, near Canon City, Colorado, was discovered in 1876 near an oil seep. Florence produces from fractured Pierre shale, and part of the Niobrara formation. Oil pioneers also found the Niobrara productiveThe Niobrara Formation is formally sub-divided into two members: the Fort Hays Limestone and the Smoky Hill Chalk. The basal Fort Hays Limestone is relatively organic-carbon poor and consists of ledge-forming limestone beds separated by thin shales (Scott and Cobban, 1964).The Niobrara Formation (latest Turonian-Campanian) is the bedrock under much of northern . Cedar County and it crops out in many places. It is an entirely marine deposit consisting of a lower .The targets are the Late Cretaceous Steele Shale and the Niobrara Formation, having a combined thickness of 3700-4900 ft. The productive intervals have a depth ranging from 8500 to 13,000 ft ...The Niobrara Formation records life at the heyday of this seaway, from 87 to 82 million years ago between the Coniacian and the Campanian Stages of the Late Cretaceous. Prior to the Niobrara was the rather poorer Dakota Formation and after that comes the Pierre Shale. Contemporaries to Niobrara include the Mooreville Chalk of Alabama. In the Upper Cretaceous Niobrara FormatioOperators are targeting the Niobrara A, B, C Niobrara Formation (Upper Cretaceous) at surface, covers 27 % of this area. Light-brown to dark-gray calcareous shale; marine offshore sediment; as thick as 75 metres (250 feet). ... as thick as 55 metres (180 feet). Newcastle Formation: light-gray, fine- to medium-grained sandstone; marine shoreline and offshore sediment; as thick as 45 metres ...USGS Publications Warehouse The Niobrara Formation in the Denver Basin, USA, is a Niobrara is mainly a liquids-rich play, namely oil and natural gas liquids. The resources are found anywhere between 3,000 feet and 14,000 feet, with most of the oil located about 7,000-8,000 feet ... The entire Niobrara Formation thickness ra

Gas, oil, and water production data were compiled from selected wells in two tight gas reservoirs-the Codell-Niobrara interval, comprised of the Codell Sandstone Member of the Carlile Shale and the Niobrara Formation; and the Dakota J interval, comprised mostly of the Muddy (J) Sandstone of the Dakota Group; both intervals are of Cretaceous age-in the Wattenberg field in the Denver Basin of ...The Smoky Hill Chalk Member of the Niobrara Chalk formation is a Cretaceous conservation Lagerstätte, or fossil rich geological formation, known primarily for its exceptionally well-preserved marine reptiles. [2] Named for the Smoky Hill River, [1] the Smoky Hill Chalk Member is the uppermost of the two structural units of the Niobrara Chalk. [2]The OAE III in the WIS correlates to the Niobrara Formation C marl and C chalk intervals and Scaphites Depressus biozone in the Denver Basin and is represented by the Razor 25-2514H core (Redtail Field) in this study. Redox sensitive trace elements (molybdenum (Mo), vanadium (V), and iron (Fe)) indicate a range of redox conditions from dysoxia ...APA formatting is a common style of writing used in academic and professional settings. It is often used for research papers, journal articles, and other documents. The first step in getting started with APA formatting is to familiarize you...This study presents a regional stratigraphic framework and paleoenvironmental reconstruction of the Niobrara Formation in northern Colorado (Fig. 1) based upon multidisciplinary biostratigraphic and petrographic data.In doing so, this analysis provides an integrated biofacies/lithofacies model of sediment deposition and regional paleoenvironments that will assist in reservoir characterization ...

The Cretaceous rocks in southwestern Minnesota can be correlated with the better-known regional stratigraphy in South Dakota of the Dakota Formation, Graneros Shale, Greenhorn Limestone, Carlile Shale, Niobrara Formation and Pierre Shale (Fig. 3).The Niobrara and Benton are not now [ca. 1938] treated as groups, the broader term Colorado group, which includes them both, being considered the more useful group name. ... Skull Creek shale, Newcastle sandstone, Mowry shale, Belle Fourche shale, Greenhorn formation, Carlile shale, and Niobrara formation. Greenhorn formation is largely a light ...7 sept. 2023 ... The Niobrara Formation lawsuit is a legal dispute over mineral rights, environmental concerns, and landowner issues.…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Abstract In the Wattenberg Field, the Reservoir Characterization. Possible cause: The entire formation could produce up to 1 million barrels a day. ... Niobrara boosts i.