Niobrara formation.

The purpose of the study was to evaluate the effectiveness of a machine learning workflow to improve resolution within the reservoir intervals of the Niobrara and Codell formations, the primary targets for development in this portion of the basin. The seismic data are from Phase 5 of the GPI/Fairfield Niobrara program in northern Colorado.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. The Niobrara Formation (Upper Cretaceous) in the northern Great Plains is being studied by the U.S. Geological Survey because it includes potential low-permeability reservoirs for natural gas. Subsurface investi­ gations of the Niobrara indicate that three major chalk tongues are found within the unit. Niobrara Formation (Upper Cretaceous) at surface, covers < 0.1 % of this area. White to dark-gray argillaceous chalk, marl, and shale. Weathers yellow to orange. Contains thin, laterally continuous bentonite beds, chalky carbonaceous shale, minor sand, and small concretions. Thickness up to 150 ft (46 m).

Devon Energy Corp. is planning to double its activity levels to 15 wells in the emerging Niobrara Formation of the Powder River Basin, which is described by industry experts as one of the world's super basins. Fresh off a year that targeted development in the Powder River's Turner Formation, the Oklahoma City-based company is focusing ...Stratigraphic distribution of the nodosaurid specimens in the Niobrara Formation, Kansas. The exact levels of YPM 1847, YPM 55419 and KUVP 25150 are approximate within the range of the bars.

Its type locality is FHSM VP-2295 locality, Ellis County, which is in a Coniacian marine chalk in the Niobrara Formation of Kansas. Ecology: aquatic carnivore. Fossilworks hosts query, analysis, and download functions used to access large paleontological data sets. It presents taxonomic, distributional, and ecological data about the entire ...

Chronostratigraphy and lithostratigraphy of the Niobrara Formation in northwest Colorado (modified from Scott and Cobban, 1964; Locklair and Sageman, 2008;updated to the 2012 geologic time scale ...May 1, 2020 · The productive Niobrara Formation in the basin contains calcareous shale, shaley limestone, and marls as reservoir rocks. According the USGS, reservoir zones in the Niobrara range from 50 to 200 feet in thickness, however, there have been wells drilled in the basin where the zones were near 400 feet. The 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).Pachyrhizodus caninus skeletons.JPG 2,272 × 1,704; 986 KB. Pachyrhizodus caninus.png. Pachyrhizodus leptognathus Exhibit Museum of Natural History.JPG. Pachyrhizodus sp. (fossil fish with preserved gut) (Niobrara Formation, Upper Cretaceous; Trego County, Kansas, USA) 1 (34440152065).jpg

The Niobrara Shale is a shale rock formation located in Northeast Colorado, Northwest Kansas, Southwest Nebraska, and Southeast Wyoming. Oil and Natural Gas can be found deep below the earth's surface at depths of 3,000 - 14,000 feet. Notes. The Niobrara Formation , also called the Niobrara Chalk, is a geologic formation in North America that ...

The enigmatic specimen, Platylithophycus cretaceum, is roughly 1.5-feet long by 10-inches wide and from the Niobrara Formation in Kansas. The Niobrara Formation is one of the most diverse fish ...

Nannofossils of the North American Late Cretaceous Western Interior Seaway have been extensively studied, but these investigations have primarily focused on the diverse communities of the Niobrara and Greenhorn sea-level highstands. We lack a firm understanding of the nature of early nannofossil communities from the initial stages of the transgression, and of how the diverse assemblages of the ...Fort Niobrara was intended to oversee Chief Spotted Tail's band of about 8,000 Brulé Lakota at the Rosebud Agency, ... Army units with both white and black soldiers, few problems, racial or otherwise arose between the soldiers at Fort Niobrara. After the formation of the fort in 1880, there were no Indian hostilities in the immediate area ...Two genre of pterosaurs are present in the formation, both within Pterodactyloidea: the pteranodontid Pteranodon (sometimes broken into several genera like Geosternbergia …The Cretaceous Niobrara Formation is one of the latest unconventional exploration targets in North America. In this paper, an overall Type-II marine organofacies with some variability is present within a core which consists of alternating marls and chalks, covering a maturity range of 0.8-1.0 %Rc (calculated vitrinite reflectance).Western Minnesota 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). Figure 3.The stratigraphy of the Niobrara Formation was described in early. work by Scott and Cobban (1964), where formal and informal. subdivisions were defined. The same subdivisions were consistently used.A recent U.S. Geological Survey (USGS) oil and gas assessment of the Powder River Basin , Wyoming and Montana, identified the Upper Cretaceous Mowry Shale and Niobrara Formation as the primary hydrocarbon sources for Cretaceous conventional and unconventional reservoirs. Cumulative Mowry-sourced petroleum production is about 1.2 BBO (billion barrels of oil) and 2.2 TCFG (trillion cubic feet of gas

Is the upper member of Niobrara Formation above Fort Hays Limestone Member of Niobrara and beneath Pierre Shale. Divided in the Pueblo area, Pueblo Co, CO in Denver basin, into 7 units described in ascending order: 1) shale and limestone unit is a 20 ft thick gray calcareous shale separated into 18 layers by gray shaly limestone, has INOCERAMUS DEFORMIS, is of early and middle Coniacian age; 2 ...consistent with gas produced from the Niobrara formation in the core parts of the Wattenberg Field and DJ Basin. This result is a considerable improvement on the previous well drilled, the J.W. Powell which recorded an IP of 220 BOE/day. Especially encouraging was the high oil component in the Vespucci well which will deliver a solidboost to ...Tylosaurus nepaeolicus was described from the upper Coniacian-lower Santonian of the Niobrara Formation of Kansas (Cope 1874), and some referred specimens were recovered from the upper Coniacian ...were defined: (1) the Bighorn Niobrara Shale Oil AU encompasses the area within the oil-generation window (0.60-1.35 percent R o), and (2) the Bighorn Niobrara Shale Gas AU includes the area where oil has been cracked to gas (greater than 1.35 percent R o). Assessment input data are summarized in table 1. Input data forIts type locality is 8 km east of Fort Wallace, which is in a Campanian marine limestone in the Niobrara Formation of Kansas. Polycotylus dolichopus: YPM 1642 [paratype], 1646 [holotype], a set of limb elements (a femur and most of the paddle (YPM 1642); a humerus and some mesopodial/epipodial bones (YPM 1646)).

The ages are determined by anchoring the long eccentricity bandpass from spectral analysis of the Niobrara Formation to radioisotopic ages with the lowest uncertainty proximal to the boundary, and adding or subtracting time by parsing the 405 k.y. cycles. The new stage boundary age determinations are: 89.75 ± 0.38 Ma for the Turonian-Coniacian ...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 Niobrara Formation at Rosebud Reservation is too shallow to produce the large quantities of natural gas favored by commercial energy companies. However, the relatively inexpensive drilling ...concentrations in Niobrara-influenced inflows were 288%, 863%, and 155%, respectively, greater than median concentrations where the Niobrara Formation was absent. Identification10. Belle Fourche Shale, Greenhorn Formation, Carlile Shale, and Niobrara Formation, and lower part of Pierre Shale, northeastern Niobrara County T25 11. Frontier Formation and Sage Breaks Member of Cody Shale, southeastern Natrona County T27 12. Niobrara Member and part of Gammon Member of Cody Shale, northern Big Horn County T39 13.Valentine Formation —the most resistant rock exposed in the middle Niobrara River Valley. The rapids span the river's channel at a light constriction and they are approximately 120 ft or 37 mMay 2, 2022 · These tributaries flow over the Rosebud Formation. Some waterfalls drop into the Niobrara, while others are found in spring-fed streams. The Ogallala Aquifer, a fragile, vast underground reservoir, is partially recharged by rainwater and snowmelt. Through springs, seeps, and waterfalls it provides most of the water to the Niobrara. Biological ... The Niobrara Formation in the Southern Powder River Basin, Wyoming: An Emerging Giant Continuous Petroleum Accumulation Authors: Stephen A. Sonnenberg …Year defined. 1896 [1] 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 ...Eagle Ford Shale, Delaware Basin, Niobrara Formation, Utica Shale, and Marcellus Shale. This gives us an inventory of approximately 1,800 net potential drilling locations, of which more than 50% are economical below $40/Bbl. And while being a low-cost producer starts with good rock, it also requires a strong technical and operational team.When exceeded, a N 2 gas phase forms in the sedimentary unit. N 2 gas-phase formation partitions other pore-water-dissolved gases from the water into the new gas phase, including He (and H 2 if ...The Uteland Butte comprises primarily limestone, dolostone, and organic-rich mudstones and siltstones. The other formations are mainly fine-grained sandstone with interbedded silt and shale. They lie below and above the Niobrara formation, the Powder River Basin’s primary hydrocarbon-bearing formation.

overlying Niobrara Formation (Hemborg, 1993). Hydrocarbon fluids from the two units are commingled in producing wells, and the combined interval is referred to as the Codell-Niobrara interval in this report. Porosity of the Codell, determined from density logs, ranges from less than 8-22 percent. The

The Upper Cretaceous Niobrara Formation and its stratigraphic equivalents contain good to excellent source rocks capable of generating significant volumes of hydrocarbons where the formation has ...

The Sharon Springs member of the Pierre formation and the Smoky Hill member of the Niobrara formation, both assigned to the Upper Cretaceous, are separated by an unconformity in at least five of ...Niobrara formation in the Denver-Julesburg Basin; did you know? EIA has improved its play and well identification methods, which has altered production volumes at various plays and has shifted classification of some wells from tight to other non-tight categories. Because EIA changed the geologic model it uses to determine formation-level ...This study uses new core data from six wells (Fig. 1) to describe the heterogeneous nature of the Niobrara Formation in the northern DJ basin.These cores capture the entire Niobrara interval, which ranges in thickness from 240 feet to 316 feet (73.2 m-96.3 m), has a current depth to top of formation ranging from 6252 feet (2011.7 m) in Well C to 8776 feet (2674.9 m) in Well D, with ...The Niobrara Formation has been analyzed using pyrolysis by several workers (Rice, 1984). Organic-rich beds in the formation have organic carbon values which range from 0.5 to 8 weight percent and average 3.2 weight percent. The kerogen present in the Niobrara is Type-II or oil-prone (sapropelic).Some of the most notable outcrops are the Monument Rocks of Western Kansas, that are comprised of the Smokey Hills Chalk of the larger Niobrara Formation. Monument Rocks, Kansas. Monument Rocks is a relatively large, isolated, and weathered outcrop of chalk that preserves rock layers deposited 87-82 million years ago.Its type locality is 8 km east of Fort Wallace, which is in a Campanian marine limestone in the Niobrara Formation of Kansas. Polycotylus dolichopus: YPM 1642 [paratype], 1646 [holotype], a set of limb elements (a femur and most of the paddle (YPM 1642); a humerus and some mesopodial/epipodial bones (YPM 1646)).Hundreds of springs feed the Niobrara as it flows through the Sandhills region—one of the largest grass-stabilized dune regions in the world. The Niobrara …Benton formation. Recognized in subsurface of Williston basin, northwestern and central South Dakota. Conformably underlies Dakota sandstone and conformably overlies Niobrara formation. Correlates with (ascending) Graneros, Greenhorn, and Carlile formations of Ward County, north-central North Dakota.Cretaceous Niobrara Formation, Northern D-J Basin Defender US33 #2-29H Samson 37.5% Working Interest The first Niobrara appraisal well, the Defender US33 #2-29H, commenced drilling operations in mid August and reached a total depth of 11,089 feet in late September. This well was drilled and funded 100% by Halliburton under their farmin …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 burial history of this fractured Niobrara Limestone reservoir and source rock offers a setting for studying the stabilization of thermal maturity because soon after peak temperature of approximately 100{degree}C was reached, exhumation lowered temperature to about 60-70{degree}C. Vitrinite reflectance (Rm = 0.6-0.7%) and published clay mineralogy data from the Niobrara Limestone indicate ...

The purpose of the study was to evaluate the effectiveness of a machine learning workflow to improve resolution within the reservoir intervals of the Niobrara and Codell formations, the primary targets for development in this portion of the basin. The seismic data are from Phase 5 of the GPI/Fairfield Niobrara program in northern Colorado.ABSTRACT. Coloborhynchus wadleighi, a new pterosaur from the paw paw Formation (upper Albian), Texas, is closely related to an English species Colohorhynchus clavirostris. A dentulous partial snout shows unique ... Nyctosaurrdae and Pteranodontidae are best known in North America from the Niobrara Formation (Coniacian to Campanian) Of western ...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).In the Pierre Shale Sandstones play, oil and gas is produced from the Sussex and Shannon sandstones. These reservoirs reach 4,500’ to 5000’ in depth and range from 3’- 50’ in thickness. and include seven accumulations. Shale and shallow chalk reservoirs of the Upper Cretaceous Niobrara formation house dry non-associated gas.Instagram:https://instagram. joann fabrics ocaladoes ups drug test seasonal personal vehicle driversshopconnect lovesdoug girod Here wide Q-range total neutron scattering was used to evaluate perdeuterated methane (CD 4) behavior at reservoir pressures (200-750 bar) and temperature (60 °C) in a sample at the late oil/wet gas thermal maturity stage from the Late Cretaceous Niobrara Formation, an active petroleum producing formation within the Denver-Julesburg Basin, U.S. project management bachelor degree onlinecommon problems in the community In Order Nos. 407‑10 and 407‑13, the Commission amended Order No. 407‑1 to include production from the Niobrara Formation in certain lands and to allow the downhole commingling of production from the Codell and Niobrara Formations. 5. Testimony was heard by the Hearing Officer that indicates that a common source of oil, gas and associated ...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. comida meicana Telegraph Creek Formation. †Warm Creek Shale of Collier and Cathcart (1922, p. 172) and Knechtel (1959, p. 740-741) in north-central Montana abandoned. Rocks reallocated to (ascending) Belle Fourche Shale, Greenhorn Formation, Carlile Shale, Niobrara Formation, and Telegraph Creek Formation.Here wide Q-range total neutron scattering was used to evaluate perdeuterated methane (CD 4) behavior at reservoir pressures (200–750 bar) and temperature (60 °C) in a sample at the late oil/wet gas thermal maturity stage from the Late Cretaceous Niobrara Formation, an active petroleum producing formation within the Denver-Julesburg Basin, U.S.