Niobrara

Niobrara Shale Description ImageThe Niobrara shale formation is situated in northeastern Colorado and parts of adjacent Wyoming, Nebraska, and Kansas. Primarily an oil play, it is in the Denver-Julesburg Basin, which has long been a major oil and gas province. An emerging play, the Niobrara is in its early stages and companies have been busy leasing land for future drilling. It has been compared by some to the Bakken shale formation farther to the north.

Samson Oil & Gas is one of the earliest companies to establish a position in the Niobrara, which some call the “NeoBakken.” Other operators include EOG Resources, Anadarko Petroleum, SM Energy, Noble Energy, Chesapeake Energy, Whiting Petroleum, Quicksilver Resources, MDU Resources, and Bill Barrett Corp. Chesapeake and EOG each have about 400,000 net acres in the Niobrara.

Niobrara Shale Map

Niobrara Shale News

Mancos shale oil potential large on Jicarilla lands in New Mexico

Dec 2, 2002 In these days when the oil and gas industry is looking for untapped resources overseas, a significant domestic resource is owned and managed by the Native American Tribes and Native Corporations of Alaska.

Basin margin gas is worthy target in Williston basin

Feb 28, 2000 Any company that wants to explore for domestic natural gas should consider the Williston basin.

Use resistivity as indicator of source rock maturity

May 10, 1999 The resistivity of various shale source rocks has been observed to increase with depth (Bakken, Barnett, Mowry, Niobrara, Woodford, etc.). This relationship can be explained by the retention of generated hydrocarbons in micropores. The generalized process requires: 1) a volume increase during conversion of kerogen to fluid hydrocarbons; 2) a rigid framework that provides a fixed volume of available pore space, and 3) micropores with micropermeability that retain hydrocarbon globules through

Area Drilling

Nov 11, 1996 Albania Albania's state Albpetrol signed an agreement with INA-Naftaplin of Croatia for oil and gas exploration and development on the Panaja-Vlore block. INA-Naftaplin will invest $4.7 million during 4 years. In case of a discovery, the Croatian company will invest 75% of the costs needed to develop and exploit the reserves. Albpetrol will provide the other 25%. Investment in the block is to total $70 million during 25 years. Angola Ranger Oil Ltd., Calgary, drilled the Kiame 4 appraisal

EXPLORATION New basins invigorate U.S. gas shales play

Jan 22, 1996 Scott R. Reeves Vello A. Kuuskraa Advanced Resources International Inc. Arlington, Va. David G. Hill Gas Research Institute Chicago While actually the first and oldest of unconventional gas plays, gas shales have lagged the other main unconventional gas resources-tight gas and coabed methane-in production and proved reserves. Recently, however, with active drilling of the Antrim shales in Michigan and promising results from the Barnett shales of North Texas, this gas play is growing in

SURVEY SHOWS SUCCESSES, FAILURES OF HORIZONTAL WELLS

Jun 19, 1995 W. Gregory Deskins, William J. McDonald Maurer Engineering Inc. Houston Thomas B. Reid U.S. Department of Energy Bartlesville, Okla. Industry's experience now shows that horizontal well technology must be applied thoughtfully and be site-specific to attain technical and economic success. This article, based on a comprehensive study done by Maurer Engineering for the U.S. Department of Energy (DOE), addresses the success of horizontal wells in less-publicized formations, that is, other than

FLUORESCENCE ANALYSIS CAN IDENTIFY MOVABLE OIL IN SELF-SOURCING RESERVOIRS

Jun 5, 1995 Gerry G. Calhoun Consulting petroleum geologist Midland, Tex. The recent surge of activity involving self-sourcing reservoirs and horizontal drilling recognizes a little tapped niche in the domestic energy mix. Such prolific pays as the Cretaceous Bakken and Austin Chalk have drawn research interest and large amounts of investment capital. Fluorescence analysis can discern movable oil-as opposed to exhausted source rock-in such reservoirs with an inexpensive test.

PARTIAL U.S. OIL, GAS RESOURCE VOLUMES TERMED 'ASTONISHING'

Mar 6, 1995 G. Alan Petzet Exploration Editor Land and state waters of the U.S. contain technically recoverable volumes of 112.6 billion bbl of oil and 1,073.8 tcf of conventional and unconventional gas, the U.S. Geological Survey estimated. The figures include proved reserves, expected future additions to reserves in existing fields, and undiscovered resources (Table 1) (31684 bytes) . Donald L. Gautier of Denver, project chief for the USGS study, called the volumes "astonishing."

INTERNATIONAL SEISMIC CREW COUNT

Jan 3, 1994 Russia's North East Petroleum Operating Agency (NEPO) has called for comments from international oil companies about proposed lease sale terms for tenders ending next spring of Primagadan area off Magadan oblast in Okhotsk Sea and East Khatyrka area off Chukotka in the Bering Sea (OGJ, May 10. p. 21). The comments also are to influence later offerings of 14 other offshore areas in the Russian Far East. Halliburton Energy Services, Houston, is coordinating responses and forwarding remarks to

HORIZONTAL GAS-STORAGE WELLS CAN INCREASE DELIVERABILITY

Oct 11, 1993 Fred J. Pittard, Jim A. Madigan SlimDril International Inc. Houston Horizontal drilling with special attention to the requirements of gas-storage zones can yield wells with deliverability about six times that of comparable vertical wells. Although horizontal-drilling technology used on development wells can be successfully applied to gas storage, there are several major differences that must be considered during both planning and drilling.

TIGHT GAS DRILLING BRINGS COLORADO'S WATTENBERG FIELD ITS BUSIEST YEAR

Jun 21, 1993 Drilling in northeastern Colorado's Wattenberg field shows no sign of slowing down even though the federal tax credit applicable to tight sand gas wells was not extended, says a report by Petrie Parkman & Co., Denver. Wattenberg's main operators plan to drill more than 1,000 wells in the field this year, making it one of the busiest in the U.S. Most present drilling targets gas in Cretaceous Codell and Niobrara low permeability sands at 6,700-8,200 ft, but the field has seven potential

HERE ARE POINTS TO REMEMBER WHEN EXPLORING NIOBRARA IN THE ROCKIES

Aug 17, 1992 Richard A. Harnett Consulting geologist Tulsa The Niobrara formation in the central Rocky Mountain region has been written about at length by several authors, most recently concerning Silo field near Cheyenne, Wyo. The Niobrara has proven an enigma to many explorationists, because while the promise is great (individual wells with cumulative production in excess of 1 million bbl), many times the results have been disappointing. What follow are a few observations and concepts that may help start

HORIZONAL DRILLING RETAINS STEADY SHARE OF U.S. ACTIVITY

Aug 10, 1992 A. D. Koen Gulf Coast News Editor After peaking in late 1990 and early 1991, U.S. horizontal drilling activity began a steady slide that carried through first half 1992. But despite higher drilling and completion costs and significant technological challenges, U.S. horizontal action has held its share of activity in a declining domestic oil and gas industry.

NIOBRARA GAS INDICATIONS COVER WIDE AREA OF WESTERN NEBRASKA

May 11, 1992 Raymond R. Burchett Nebraska Geological Survey Lincoln The Niobrara formation was named in north-eastern Nebraska by Meek and Hayden1 for exposures along the Missouri River bluffs near the town of Niobrara in Knox County (Fig. 1). Distribution of the Niobrara is restricted to the western four fifths of Nebraska. Much of the formation is concealed by deposits of older Cretaceous, Tertiary, and the younger Quaternary age rocks. Exposures of the Niobrara occur in the south-central, east-central,

EFFECTS OF DIFFERENTIAL COMPACTION FRACTURING SHOWN IN FOUR RESERVOIRS

Feb 3, 1992 Gilbert E. Thomas Thomas & Associates Denver With the advent of horizontal drilling in the U.S., fractured reservoirs have become a major target in the ongoing search for hydrocarbons. Early optimism resulting from the high initial production rates for horizontal wells, however, is now being replaced by a more realistic view as many such wells are exhibiting rapid declines in production. This is especially true for the Mississippian Bakken shale play in the Williston basin and the Cretaceous
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