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...ke a gas or oil isopotential [[contour]] map using the formula for U where U = V – Z. The values for Z, the subsea elevation of the target aquifer, ca ===Example: u₀ contours===

Substituting U and V in the above equation gives

...ally located near petrochemical complexes and LNG export facilities on the U.S. Gulf Coast, which helps facilitate rapid “spuds-to-sales” cycle time Hammes, U., H.S. Hamlin, and T.E. Ewing, 2011, Geologic analysis of the Upper Jurassi

...(GR) or uranium (U) || High || High GR caused by U; can be linear with OM; U not always present

...luating-top-and-fault-seal_fig10-1.png|{{figure number|1}}Two sands, R_u and R_d, juxtaposed by a fault. The two sands have common ...valuating-top-and-fault-seal_fig10-1.png|Figure 1]] shows two sands, R_u and R_d, juxtaposed by a fault. The two sands have common [

==Marine gravity from U. S. East coast==

...eologie en Minjbouw, vol. 59, no. 1, p. 3–24.</ref><ref name=ch10r2>Allan, U. S., 1989, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/007 ...ne to its correct depth on the fault plane profile.<ref name=ch10r2>Allan, U. S., 1989, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/007

...iety Special Publication, no. 132, p. 7–68.</ref> USGS.<ref name=USGS_2000>U.S. Geological Survey, 2000, World Petroleum Assessment—description and re | U. Cretaceous || Carbonate || Kalash || ||

...g. A related problem is linked to sample locations ''u''_l and ''u''_l&prime; not being accounted for in the definition of, say, the ...e ''x''_''i'' taken at the two locations ''u''_l and ''u''_l&prime;.

...Geral Formation covered this erg.<ref name=Scherer_2000>Scherer, C. M. S., U F. Faccini, and E. L. Lavina, 2000, Arcaboucoestratigráfico do Mesozóico

...crostructures in the Meade plate of the Idaho–Wyoming foreland thrustbelt, U., S., A.: Tectonophysics, vol. 85, p. 221–251, DOI: [http://www.sciencedi

...esidence of REE, Y, Th and U...">Bea, F.,1996, Residence of REE, Y, Th and U in Granites and Crustal Protoliths; Implications for the Chemistry of Crust ...hemical Geology 134 (4): 289–301. doi:10.1016/S0009-2541(96)00098-8.</ref> U, Th, Hf,<ref name="Tetravalent diffusion">Cherniak, D. J., J. M. Hanchar, &

...eologie en Minjbouw, vol. 59, no. 1, p. 3–24.</ref><ref name=ch10r2>Allan, U. S., 1989, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/007 ...ne to its correct depth on the fault plane profile.<ref name=ch10r2>Allan, U., S., 1989, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/00

...s in Parts of North-Central and Western Houston Metropolitan Area, Texas]: U.S. Geological Survey Miscellaneous Field Studies Map 1136</ref>

...t, 1985, U., S. natural gas availability—gas supply through the year 2000: U. S. Congress Office of Technology Assessment, OTA-E-245, 252 p.</ref> cited

...y of the Sage and Kemmerer 15-Minute Quadrangles, Lincoln County, Wyoming: U., S. Geological Survey Professional Paper 855, 18 p.

* Allan, U. S., 1989, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/007

...sealing (right). Hydrocarbons in the 7200 sand in the hanging wall (R_u) are juxtaposed with water-wet sands of the 7100 sand in the footwall

* Directly contracting low-altitude aerial photography or, in the U.S., obtaining existing surveys from the Department of Interior or Departmen U.S. sources for high-altitude photography, low-level aerial photography, and

...e oils: Chemical Geology, vol. 93, p. 13–20., 10., 1016/0009-2541(91)90061-U</ref><ref name=ch08r6>Clayton, C. J., and M. Bjorøy, 1994, Effect of matur ...</sub> ''n''-alkanes. These two samples are from a single oil field on the U.S. Gulf Coast. The condensate does not contain measurable ''n''-alkanes bey

...es, Volume I: Stuttgart, E. Schweizerbart’sche Verlagsbuchhandlung (Nagele u. Obermiller), p. 163–186.</ref><ref>Macquaker, J. H. S., S. J. Bentley, a

...ine width denoting relative importance. Sense of throw is indicated as up (U) or down (D). Yellow dots indicate events used to calculate depth and fault

...e-us-energy-future.html Recovering dynamic Gulf of Mexico reserves and the U., S. energy future]: Oil & Gas Journal, 26 April 1993, p. 85–88, 90–92.

...figure (b), two faults located from subsurface mapping are shown, labeled U/D. The evidence for their existence is seen in subsurface mapping. Both are

...a altispira''. Paleoecological abbreviations: Bathy = bathyal, M = middle, U = upper, O = outer, I = inner. (From Armentrout.<ref name=pt05r20>Armentrou ...5r172>Wolfe, J. A., 1977, Paleogene floras from the Gulf of Alaska region: U., S. Geological Survey Professional Paper 997, p. 108.</ref>. (From Magoon

...igh quality shale”, is characterized by high gamma ray (GR), high uranium (U), high acoustic (AC) and low density (DEN) (Fig. 3). Moreover, the gas-prod

...epresents the projection of the volumetric photoelectric absorption index, U (the product of Pe and electronic density), to the value at zero porosity. ...og analysts became comfortable with the new spectral gamma ray (K, Th, and U) and photoelectric (Pe) measurements. The spectral gamma ray log is helpful

...ry of the Gulf of Mexico passive margin basin. Copyright: Haq;<ref>Haq, B. U., J. Hardenbol, and P. R. Vail, 1988, Mesozoic and Cenozoic chronostratigra ...Pennsylvanian (Desmoinesian), Paradox basin and Aneth field, southwestern U.S.A., in J. F. Read, L. J. Weber, J. F. Sarg, and F. M. Wright, eds., Milan

..., L. D., 1977, Conodont color alteration—an index to organic metamorphism: U., S. Geological Survey Professional Paper 995, p. 1–27.</ref> and conodon

...lus Shale of the Appalachian Basin is the most extensive shale play in the U.S., covering about 66,600,000 acres (USGS Marcellus Shale Assessment Team, In October 2019, the U.S. Geological Survey (USGS) published Fact Sheet 2019-3050, “Assessment o

...me=pt10r11>Dykstra, H., Parsons, R. L., 1950, Secondary recovery of oil in U., S.: American Petroleum Institute Publication, p. 160–174.</ref> have pu

...d in red. As the throw increases, more of the stratigraphy below the R_u and R_d sands moves past the fault and the SGR changes. ...eal_fig10-25.png|300px|thumb|{{figure number|4}}SGR threshold plot for the U.S. Gulf Coast.]]

...nition of selected groundwater terms—revisions and conceptual refinements: U. S. Geological Survey Water Supply Paper 1988, 21 p.</ref> however, have re ...Morris, W. L., 1953, Assignor, Philips Petroleum Co. Portable Permeameter: U., S. Patent No. 2,633,015, March 23.</ref> and Jones.<ref name=pt05r85>Jone

...A., 1985, Vertical seismic profiling, Part A— principles, 2nd ed.: Oxford, U., K., Pergamon Press, 509 p.</ref> The major difference between a VSP and a

...e characterized by thin beds, low resistivity, and high continuity (N9 and U-U1). These zones consisted of 30- to 90-m bundles of centimeter- to meter-t

...e-us-energy-future.html Recovering dynamic Gulf of Mexico reserves and the U., S. energy future]: Oil & Gas Journal, 26 April 1993, p. 85–88, 90–92.

...of jurisdictions friendly to oil and gas investment www.energyindepth.org/u-s-dominates-ranking-of-jurisdictions-friendly-to-oil-and-gas-investment/ (a ...e, Colorado, Kansas, Nebraska, South Dakota, and Wyoming—USGS Province 39: U.S. Geological Survey Digital Data Series DDS–69–P, ch. 2, 41 p.

...ural-traps_fig20-5.png|{{figure number|2}}Tectonic setting for the western U.S. relevant to Laramide plate tectonics. From Schwartz<ref name=Schwartz_19 ...-traps_fig20-5.png|Figure 2]] depicts the tectonic setting for the western U.S. relevant to Laramide plate tectonics. It shows where overthrusting took

...p. 29–45.</ref><ref name=ch17r15 /> Haq et al.,<ref name=ch17r43>Haq, B., U., J. Hardenbol, and P. R. Vail, 1988, Mesozoic and Cenozoic chronostratigra

Allan<ref name=Allan_1989>Allan, U. S. 1989, Model for hydrocarbon migration and entrapment within faulted str

...8, Geology of the Mississippi River deltaic plain, southeastern Louisiana: U., S. Army Engineer Waterway Experiment Station, Corps of Engineers, Vicksbu

...6r7>Atkinson, A. C., 1985, Plots, transformations, and regression: Oxford, U., K., Oxford Press, 282 p.</ref> Often a simple crossplot reveals the essen

...drilling and development costs'', or IDCs, is available to the tax payer. U.S. Treasury Regulation 1.612-4 states that “all expenditures made by an o ...e number|2}}Depletion allowance calculation. Note that remaining reserves (U) are end of year. In cost depletion calculation, S = sales during year. (Af

...s: Proceedings of the Seminar on Mathematics of Oil Production, Cambridge, U., K.</ref>

| Parabolic || U-shape || 1 or more || Unidirectional || Abundant || Large, thick ...of bed load in Mississippi River from Cairo, Illinois, to the mouth. (Form U.S. Army Corps of Engineers 1935 in Berg 1985).]]

...topic/offlap offlap] curve such as the Haq et al.<ref name=ch17r43>Haq, B. U., J. Hardenbol, P. R. Vail, 1988, Mesozoic and Cenozoic chronostratigraphy

...Bozdoganetal_1994>Bozdoǧan, N., A. Karabulut, T. Erten, H. İztan, A. Çubukçu, and M. Korucu, 1994, Stratigraphy and petroleum potential of the Paleozoic ...name=Coruhetal_1997>Çoruh, T., Yakar, H., and Ediger, V. Ş., 1997, Güneydoǧu Anadolu Bölgesi Otokton İstifinin Biyostratigrafisi. Türkiye Petrolleri

...hot [[shale]] (AbuAli et al., 1991<ref name=Abualietal1991>AbuAli, M. A., U. A. Franz, J. Shen, F. Monnier, M. D. Mahmoud, and T. M. Chambers, 1991, Hy

...m [4–6 mi]) and 132 km (82 mi) long.<ref name=Tenbrinketal_1993>Ten Brink, U. S., et al., 1993, Structure of the Dead Sea pull-apart basin from gravity

...nd relative sea level changes postulated for marine sediments.<ref>Haq, B. U., J. Hardenbohl, and P. K. Vail, 1988, Mesozoic and Cenozoic chronostratigr

Block 16/17 (T-Block) is located in the U.K. sector of the [[South Viking Graben]] (SVG) adjacent to the Fladen Groun ...evious workers (Arduini et al., 1993<ref name=Arduinietal1993>Arduini, M., U. Biffi, S. T. J. Cherry, P. Gianni, A. Ortenzi, M. Rossi, N. C. T. Steel, a

...l group of alkanes called X-compounds. From Klomp;<ref name=ch08r25>Klomp, U., 1986, The chemical structure of a pronounced series of iso-alkanes in sou

...pore volume at that pressure is the ''minimum unsaturated pore volume'' (''u''_min) ([[:File:charles-l-vavra-john-g-kaldi-robert-m-sneider_cap

...rg/conference-paper/SPE-19878-MS Improving recovery from the Dunlin field, U., K. Northern North Sea, in Formation Evaluation and Reservoir Geology]: 64

...etal2013>Selinus, O., B. Alloway, J. A. Centeno, R. B. Finkelman, R. Fuge, U. Lindh, and P. Smedley, eds., 2013. Essentials of medical geology: Amsterda ...a, ''in'' O. Selinus, B. Alloway, J. A. Centeno, R. B. Finkelman, R. Fuge, U. Lindh, and P. Smedley, eds., Essentials of Medical Geology: Amsterdam, Els

...s (Sisodia and Singh, 2000<ref name=Sisodiaandsingh2000>Sisodia, M.S., and U. K. Singh, 2000, Depositional environment and hydrocarbon prospects of the

...; Sign 1996; <ref name=Milani_1997 /><ref name=Milani_1998> Milani, E. J., U. F. Faccini, C. M. S. Scherer, L. M. Araújo, and J. A. Cupertino, 1998, Se

* Fahnestock, R. K., 1963, Morphology and hydrology of a braided stream: U.S. Geol. Survey Prof. Paper 422A, p. 1-70. .... Wolman, 1957, River channel patterns: braided, meandering, and straight: U.S. Geol. Survey Prof. Paper 282-B, p. 39-85.

...biozonation of the Laurentian Delamaran Stage in the southern Great Basin, U.S.A.: Implications for global correlations and defining a series 3 global b ..., Early Paleozoic biochronology of the Great Basin, western United States: U.S. Geological Survey Professional Paper 1579-A, p. 1–50.</ref> Dean;<ref

...wall locations superimposed on the fault plane.<ref name=Allan_1989>Allan, U. S., 1989, [http://archives.datapages.com/data/bulletns/1988-89/data/pg/007 ...nd S. D. Burley, 1998, Structure and content of the Moab fault zone, Utah, U.S.A., and its implications for fault seal prediction, in H. Jones, Q. J. Fi

...ne-dominated succession: The Lower Jurassic Cleveland Ironstone Formation, U.K.: Geological Society of London Journal, v. 153, p. 759–770.</ref><ref n ...es, Volume I, Stuttgart, E. Schweizerbart’sche Verlagsbuchhandlung (Nagele u. Obermiller), p. 163–186.</ref><ref>Könitzer, S. F., S. J. Davies, M. H.

...Regional geology and petroleum resources: Scientific Press, Beaconsfield, U.K., 292 p.</ref> <ref name=Beydoun_1991>Beydoun, Z. R., 1991, Arabian plate ...uth, A. M. E., Heinze, C. Kutzbach, J. E., Maier-Reimer, E., Mikolajewicz, U., Rowley, D., Rees, A., and Ziegler, A. M., 2002, Simulated warm polar curr

...pper Cretaceous Austin Chalk and Eagleford Formation, south-central Texas, U.S.A., in B. J. Katz, ed., Petroleum source rocks: Berlin, Springer-Verlag, ...56, doi:10.1016/0146-6380(88)90237-9.M</ref><ref>Horsfield, B., R. Littke, U. Mann, S. Bernard, T. A. T. Vu, R. di Primio, and H-M. Schulz, 2010, [http:

...as resources in Devonian black shales, Appalachian Basin, eastern U.S.A.]: U.S. Geological Survey Open-File Report 2005-1268 version 1.0.</ref> to as mu During the 1970s, the U.S. Department of Energy initiated the Eastern Gas Shales Project (EGSP) to

...hermal ore-deposit rocks as related to hydolytic disproportionation of OM: U.S. Geological Survey Open-File Report 98-758, 127 p.</ref><ref>L. Wenger, 2 ...Basin Province of Colorado, Kansas, Nebraska, South Dakota, and Wyoming]: U.S. Geological Survey Fact Sheet FS-002-03, February 2003, 3 p.</ref> Upper