42:
163:
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294:
In 2015, they announced the Pikka oil pool to the public. In 2017, an extension of the same oil pool at "Horseshoe", 21 miles south of the Pikka discovery was confirmed. Per USGS in 2017, industry estimated this Pikka-Horseshoe pool may hold more than 1,000 million barrels of oil (MMBO). In 2017
372:
The Corwin
Formation, Chandler Formation along with its members the Killik Tongue, and Niakogon Tongue, were all reassigned to the upper or nonmarine section of the Nanushuk. The Grandstand Formation and Topagoruk Formation were reassigned to the middle or transitional portion between the lower
399:
David W. Houseknecht, Richard O. Lease, Christopher J. Schenk, Tracey J. Mercier, William A. Rouse, Palma J. Botterell, Katherine J. Whidden, Christopher P. Garrity, Kristen A. Lewis, Samuel J. Heller, William H. Craddock, Timothy R. Klett, Phuong A. Le, Rebecca A. Smith, Marilyn E. Tennyson,
261:
Before 2015, over a period of more than 50 years about 150 oil exploration wells had been drilled into the
Nanushuk and Torok Formations, yet oil production had had almost zero success finding one small oil pool with less than 50 million barrels in place. However, as of 2017, the
266:
estimated that there were 8.7 billion barrels of oil and 25 trillion cubic feet of natural gas in the
Nanushuk and Torok Formations, much more than previously estimated. These discoveries were possible, because of technological advancements like three-dimensional
306:
with worm burrows crossing between the silts and sands. Under normal circumstances vertical flow would be much reduced in stacked silt and shale sequences but the bioturbation was sufficient to guarantee efficient vertical recovery.
373:
marine and upper nonmarine. The
Kukpowruk Formation, Ninuluk Formation, and Tuktu Formation were reassigned to the lower marine section. The Hatbox Tongue's name was changed to the Killik Tongue, both terms are no longer in use.
402:"Assessment of undiscovered oil and gas resources in the Cretaceous Nanushuk and Torok Formations, Alaska North Slope, and summary of resource potential of the National Petroleum Reserve in Alaska, 2017"
447:
627:
450:"New Dinosaur Ichnological, Sedimentological, and Geochemical Data from a Cretaceous High-Latitude Terrestrial Greenhouse Ecosystem, Nanushuk Formation, North Slope, Alaska"
159:
estimated that there were 8.7 billion barrels of oil and 25 trillion cubic feet of natural gas in the
Nanushuk and Torok Formations, much more than previously estimated.
448:
Anthony R. Fiorillo, Paul J. McCarthy, Grant Shimer, Marina B. Suarez, Ryuji
Takasaki, Tsogtbaatar Chinzorig, Yoshitsugu Kobayashi, Paul O’Sullivan, Eric Orphys (2024).
203:
found large-scale folds and faults in the South of the formation and evidence, that the rocks have been heated to temperatures at which oil is converted to natural gas.
299:, an Australian-listed oil and gas company. The so called "Nanushuk development project" is operated by Oil Search at 51% interest, and Repsol at 49% interest.
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subsidiary Oil Search were looking to sell 20-25% of their non-operating interest in the Pikka unit. one month after they had asked for a permit to
489:
429:
755:
311:
602:
330:
626:
Sommer, Jesse V.; Dorrington, Kevin; VanDenburg, Colby; Bonelli, Jr., James R.; Alonso, José Luis
Algibez (1 January 2021).
555:
103:
237:
footprints and wood fragments have been found in this formation. Some tree trunks reached up to 58 cm in diameter.
315:
400:
Stephanie B. Gaswirth, Cheryl A. Woodall, Michael E. Brownfield, Heidi M. Leathers-Miller, Thomas M. Finn (2017).
140:
Until 2015, for more than 50 years about 150 oil exploration wells had had almost zero success; However, in 2015,
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had started, though a final investment decision on the project was still pending. In May 2024 Repsol and
314:
was expected to be the first development project to begin oil production in the
Nanushuk formation, when
184:
179:
below it forms a huge wedge of sediment deposited in a deep water basin and stretches from north of the
808:
722:"Revised Cretaceous and Tertiary stratigraphic nomenclature in the Colville Basin, Northern Alaska"
272:
268:
187:
to the adjacent offshore. It was deposited in shallow water and includes potential reservoirs in
249:
and bipedal ornithischians. The latter make up a noticeable majority, 59% of the finds near the
505:"North Alaska Super Basin: Petroleum systems of the central Alaskan North Slope, United States"
263:
156:
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483:
423:
133:. Its thickness varies from about 1500 to about 250 meters. Underneath the Nanushuk lies the
784:
695:
670:
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516:
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55:
646:"Oil patch insider: Santos, Repsol reportedly look to sell 20-25% Pikka; Pokon DEC head -"
8:
520:
465:
323:
111:
737:
532:
449:
206:
The thickness of the
Nanushuk Formation varies from about 1500 to about 250 meters.
729:
524:
469:
409:
230:
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discovered the Pikka oil field by drilling a discovery well they called Qugruk 3.
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134:
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149:
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782:
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536:
145:
29:
41:
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180:
628:"11 Pikka Field and the Opening of the Nanushuk Play, North Slope, Alaska"
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in the
Nanushuk Formation with estimated resources of more than 300 MMBO.
162:
528:
414:
334:
296:
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227:
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33:
625:
556:"Pikka Unit Nanushuk Development Project, North Slope of Alaska, USA"
192:
107:
721:
733:
242:
234:
720:
Mull, Charles G.; Houseknecht, David W.; Bird, Kenneth J. (2003).
215:
196:
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603:"Armstrong Selling Stake In Largest US Oil Discovery In Decades"
671:"Part 2: Nanushuk Oil Pool AIO for Pikka enhanced oil recovery"
284:
219:
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119:
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and migrated northeastward into NPR-A. The formation preserves
99:
70:
582:"Massive discovery breathes life into Alaska's North Slope"
200:
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and many of its subunit terms were completely abandoned.
503:
Masterson, W. Dallam; Holba, Albert G. (June 2021).
110:
in these rocks likely was generated beneath Western
785:"Fossilworks: Gateway to the Paleobiology Database"
783:Various Contributors to the Paleobiology Database.
719:
241:of Nanushuk Formation include avian and non-avian
800:
278:
502:
443:
441:
439:
302:More remarkable was the pervasive presence of
46:Kaolinite in sandstone from the Nanushuk Group
600:
256:
488:: CS1 maint: multiple names: authors list (
428:: CS1 maint: multiple names: authors list (
16:Geologic formation in the US state of Alaska
436:
144:announced the Pikka oil pool and in 2016,
40:
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473:
413:
175:The Nanushuk Formation together with the
496:
161:
337:forms and operates the Horseshoe unit.
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663:
573:
394:
392:
390:
388:
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361:The Nanushuk was reduced in rank from
333:Division of Oil and Gas approved that
331:Alaska Department of Natural Resources
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548:
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104:National Petroleum Reserve in Alaska
638:
383:
13:
776:
688:
340:
14:
820:
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756:"National Geologic Map Database"
316:Front-end engineering and design
295:Armstrong sold its interests to
748:
713:
209:
619:
594:
580:Mackenzie, Wood (2017-03-21).
1:
376:
279:Pikka and Horseshoe oil pools
601:Darren Barbee (2017-11-03).
166:Kokolik River Oil Sand, 2013
7:
475:10.3390/geosciences14020036
356:
349:announced discovery of the
10:
825:
257:History of oil discoveries
170:
696:"Horseshoe unit approved"
76:
66:
61:
51:
39:
28:
23:
214:The formation preserves
273:extended reach drilling
269:seismic data processing
406:U.S. Geological Survey
264:U.S. Geological Survey
167:
157:U.S. Geological Survey
165:
367:geological formation
529:10.1306/01282120057
521:2021BAAPG.105.1233M
466:2024Geosc..14...36F
218:dating back to the
183:beneath the Alaska
118:dating back to the
30:Stratigraphic range
726:Professional Paper
415:10.3133/fs20173088
324:hydraulic fracking
233:. Many fossilized
168:
112:Alaska North Slope
88:Nanushuk Formation
24:Nanushuk Formation
809:Cretaceous Alaska
84:
83:
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702:. March 27, 2022
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515:(6): 1233–1291.
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289:Armstrong Energy
199:sandstones. The
155:As of 2017, the
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351:Willow oil pool
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341:Willow oil pool
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251:Kukpowruk River
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177:Torok Formation
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135:Torok Formation
102:in westernmost
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760:ngmdb.usgs.gov
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734:10.3133/pp1673
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700:Petroleum News
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677:. May 12, 2024
675:Petroleum News
662:
652:. May 12, 2024
650:Petroleum News
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618:
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408:. Fact Sheet.
381:
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363:geologic group
358:
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347:ConocoPhillips
342:
339:
320:Santos Limited
280:
277:
258:
255:
247:ornithischians
245:, quadrupedal
211:
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150:Willow project
148:announced the
96:geologic group
92:Nanushuk Group
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329:In 2022, the
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310:In 2020, the
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146:ConocoPhilips
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788:. Retrieved
763:. Retrieved
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654:. Retrieved
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564:. Retrieved
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484:cite journal
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424:cite journal
405:
371:
360:
344:
328:
309:
304:bioturbation
301:
293:
282:
260:
226:ages of the
213:
210:Paleontology
205:
181:Brooks Range
174:
154:
139:
126:ages of the
91:
87:
85:
18:
790:17 December
607:Hart Energy
454:Geosciences
185:North Slope
765:2024-03-27
706:2024-05-16
681:2024-05-16
656:2024-05-16
612:2024-05-16
587:2024-05-16
566:2024-05-16
377:References
335:Oil Search
312:Pikka Unit
297:Oil Search
228:Cretaceous
224:Cenomanian
128:Cretaceous
124:Cenomanian
34:Cretaceous
742:2330-7102
560:NS Energy
537:0149-1423
460:(2): 36.
345:In 2017,
283:In 2013,
253:.
243:theropods
239:Ichnotaxa
193:shoreface
108:Petroleum
106:(NPR-A).
803:Category
357:Taxonomy
235:dinosaur
62:Location
517:Bibcode
462:Bibcode
216:fossils
197:fluvial
189:deltaic
171:Geology
116:fossils
77:Country
740:
562:. 2020
535:
285:Repsol
231:period
220:Albian
195:, and
142:Repsol
131:period
120:Albian
100:Alaska
71:Alaska
67:Region
94:is a
56:Group
792:2021
738:ISSN
533:ISSN
490:link
430:link
287:and
201:USGS
86:The
52:Type
730:doi
525:doi
513:105
470:doi
410:doi
365:to
98:in
90:or
805::
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736:.
728:.
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673:.
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605:.
558:.
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531:.
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507:.
486:}}
482:{{
468:.
458:14
456:.
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438:^
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191:,
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684:.
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634:.
615:.
590:.
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432:)
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222:-
122:-
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