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• Sand peel
  [[File:SandPeel.JPG|thumbnail|300px|Portion of a wood mounted sand peel]] ...ethods_of_core_preservation|cores]] or outcrops of unconsolidated sands. Sand peels allow for the capture of details in sedimentary features for analysis
  2 KB (239 words) - 19:40, 9 September 2014

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• Sand peel
  [[File:SandPeel.JPG|thumbnail|300px|Portion of a wood mounted sand peel]] ...ethods_of_core_preservation|cores]] or outcrops of unconsolidated sands. Sand peels allow for the capture of details in sedimentary features for analysis
  2 KB (239 words) - 19:40, 9 September 2014
• Migration pathway map construction
  ...lt trap regime|faults]] and those parts of faults that juxtapose sand with sand as well as those faults that [[Cross-sealing faults|cross-seal]] or [[Cross | Defines sand-sand and sand-shale juxtaposition and potential [[Cross-leaking faults#Juxtaposed litholo
  3 KB (405 words) - 18:19, 29 March 2022
• How fault zones affect seal
  ...between seal behavior and the inferred sand-shale ratio of the fault zone. Sand-rich portions of the fault zone leak; shale-rich portions of the fault zone ...ar gouge along a normal fault found in a sequence of Permian-Carboniferous sand and shales near Lynemouth, U.K..]]
  4 KB (509 words) - 16:52, 29 March 2022
• Cross-bedding
  ...dstone near Mt. Carmel road, Zion Canyon, Utah, indicating wind action and sand dune formation prior to formation of rock.]]
  563 bytes (70 words) - 20:12, 30 March 2015
• Fault plane profile construction
  ...juxtaposed across the fault. By doing so, they show areas of sand/sand and sand/shale juxtaposition, establish seal relationships, define potential fault-d ..._fig10-15.png|Figure 1]] is a simple example of a fault plane profile. The sand reservoirs in the hanging wall (dark gray) and footwall (light gray) are sh
  6 KB (834 words) - 14:51, 29 March 2022
• Gypsum
  ...at Great Salt Plains Lake, Oklahoma. The crystals form around grains of sand and clay to give the distinctive shape. Collected by Sara and Andrew Allen
  583 bytes (83 words) - 21:19, 9 December 2014
• Fault seal analysis example: Gulf Coast
  ...nging wall (R_u) are juxtaposed with water-wet sands of the 7100 sand in the footwall (R_d). .... Cross-seal (left) occurs where the 7100 sand is juxtaposed with the 7200 sand. This cross-sealing segment is characterized by low SGRs (blue). Cross-leak
  5 KB (769 words) - 18:12, 29 March 2022
• Sediment thickness and field location maps: Gulf of Mexico example
  Sedimentary-basin-analysis fig4-4.png|{{figure number|2}}Major sand influxes into the northern Gulf of Mexico from Late Cretaceous to Recent. A ==Map of major sand influxes==
  5 KB (753 words) - 19:58, 18 February 2022
• Bioturbation
  ...e or decrease porosity and permeability. For instance, burrows filled with sand grains in a mud or clay unit could be conduits for fluid flow if connected.
  907 bytes (132 words) - 21:42, 18 September 2014
• East Breaks deep-water exploration strategy
  # Delineate prospective areas by looking for lowstand sand-prone areas. Use trends of [[isochron]] thicks basinward of each deposition # Map seismic facies and structures of sand-prone intervals to locate prospects.
  6 KB (902 words) - 16:00, 24 March 2022
• Smear-gouge ratio
  Smear-gouge ratio is the ratio of sand to [[shale]] that has moved past some critical portion of the fault plane.<
  911 bytes (124 words) - 13:49, 18 March 2019
• Fault plane profile
  ...juxtaposed across the fault. By doing so, they show areas of sand/sand and sand/shale juxtaposition, establish seal relationships, define potential fault-d ..._fig10-15.png|Figure 1]] is a simple example of a fault plane profile. The sand reservoirs in the hanging wall (dark gray) and footwall (light gray) are sh
  9 KB (1,461 words) - 21:57, 28 March 2022
• Sandstone diagenesis: composition and texture
  ...neralogy and sediment maturity. Mechanical and chemical weathering affects sand grains during transportation. The final product reflects the origin, amount ...57, no. 2, p. 349–369.</ref> Size does affect permeability; the finer the sand, the lower the permeability. [[Permeability]] indirectly affects porosity t
  5 KB (729 words) - 20:48, 5 April 2022
• Israel petroleum systems
  | Quaternary || 27 || Hula || Hula || 1991 || Huyla Sand || Continental [[sandstone]], [[coal]] || Gas || Structural/stratigraphic | | Pliocene || 25 || Gaza Marine || Yafo || 2000 || Yafo Sand || [[Turbidite]] sandstone || Gas || Stratigraphic || Saqiye Group || Yafo
  10 KB (1,276 words) - 21:00, 19 July 2016
• Tar sands
  ...l of total bitumen and extra-heavy oil in place in the presently known tar-sand deposits. Following the definitions discussed above, the [https://en.wikipe The only other major tar-sand deposits may be located in the former Soviet Union, but they are poorly und
  7 KB (1,012 words) - 13:40, 18 March 2019
• Subregional and local pressure compartments
  ...at may form local pressure compartments are fault blocks, sand lenses, and sand wedges developed in [[growth fault]]s.
  3 KB (440 words) - 17:58, 17 February 2022
• Cross-leaking fault
  ...</sub> of the R_d sand is greater than that of the R_u sand. The fault is cross leaking despite different OWCs. ...sand/sand juxtaposition along the fault. Hydrocarbons leak across the sand/sand juxtapositions.
  8 KB (1,155 words) - 21:31, 24 March 2022
• Rock physics analysis for reservoir identification
  ...and A and Sand B have different properties due to the presence of clays in Sand B. ...ock physics properties between clean sandstone (Sand A), clayey sandstone (Sand B), and claystone.]]
  15 KB (2,356 words) - 18:00, 26 April 2022
• Seal capacity of different rock types
  ...e some true shales as well as siltstones, silty mudstones, and interbedded sand/shale cores. ==Sand seals==
  5 KB (760 words) - 20:55, 31 March 2022
• Reservoir simulations and field unitization
  ...e seal behavior, [[transmissibility]], [[permeability]], nor areas of sand/sand juxtaposition are constant over the entire fault surface.
  3 KB (479 words) - 15:21, 30 March 2022
• Systems tracts and trap types
  ...graphic, but postdepositional [[deformation]] that places the gravity-flow sand deposit in a structurally high position enhances the potential for focused ...essive systems tract overlie the lowstand systems tract–prograding complex sand-prone facies, providing excellent top seal to the underlying sandy reservoi
  9 KB (1,239 words) - 16:58, 24 February 2022
• Facies map
  ...oured parallel to the depositional dip of the slope valleys down which the sand was transported. ==Net sand map==
  15 KB (2,070 words) - 20:34, 7 July 2016
• Sandstone provenance and characterization
  ...to transport them and to make them deposited. That’s why we can found the sand deposit or sandstone almost in everywhere. ...sandstone. Knowing the composition, may help us to understand where is the sand sediment come from and what is the source rocks of deposit, so we can inter
  10 KB (1,524 words) - 15:29, 14 March 2016
• Migration by solution in water
  ==Diffusion in shale vs. Sand==
  6 KB (915 words) - 15:16, 14 February 2022
• Superimposed sea level cycles
  ...of siliciclastic deposition are likely to transport significant volumes of sand into the basin, depositing potential reservoir facies. Transgressive phases ...d of three phases (Figure 4-18). The lowstand phase may consist of basinal sand-prone mounds (basin-floor fans) and shelf-edge deltas. The transgressive ph
  11 KB (1,469 words) - 15:06, 5 January 2024
• Quantitative fault seal analysis
  ...ationship between the observed sealing behavior of faults and the inferred sand–shale content of the fault zone.<ref name=ch10r7>Bouvier, J., D., Kaars-S ...io is high in the zone (high SGR). A fault cross-seals or dip-seals if the sand–shale ratio is low in the zone (low SGR).
  9 KB (1,327 words) - 16:32, 29 March 2022
• Sandstone porosity and permeability prediction
  ...s of major sandstone depositional environments, especially with respect to sand body geometries.</ref> cover the impact of depositional environment on poro
  2 KB (300 words) - 20:29, 5 April 2022
• How faults control trap fill and migration pathways
  ...the flank of the structure against [[cross-sealing faults]] that have sand/sand juxtapositions. Wells in three fault compartments (211/18-5, 10, and 16) in
  5 KB (785 words) - 17:04, 29 March 2022
• Amplitude versus offset (AVO) analysis
  file:amplitude-versus-offset-avo-analysis_fig2.png|{{figure number|2}}Brine sand model. file:amplitude-versus-offset-avo-analysis_fig3.png|{{figure number|3}}Gas sand model.
  12 KB (1,723 words) - 18:41, 20 January 2022
• Perforation design
  [[file:UreigaAlmandiFigure12.jpg|thumb|200px|{{figure number|12}}Sand control completion flow chart.]] ==Summary Sand Completion Flow Chart==
  12 KB (1,786 words) - 21:02, 21 April 2022
• Relating traps to paleogeography
  ...4-41.png|Figure 2]]). The anticlines continue to grow, and the tilt of the sand body becomes progressively more accentuated as each successive cycle of [[S ...s_fig4-40.png|Figure 1]], producing fields are along the 200-ft (60-m) net sand [[contour]] or beyond rather than in the axial thick. This is because of gr
  11 KB (1,482 words) - 15:47, 21 March 2022
• Migration pathway
  * Petroleum is deflected laterally through sand-rich sections by overlying shale-rich sections. A map of the structure at the top of the main sand-rich section is required to make a petroleum migration map. Generally, a ma
  6 KB (889 words) - 16:50, 29 March 2022
• Scientific method: application to exploration
  * A simple gross sand [[Subsurface maps#Isopach|isopach]] map that is essentially unaltered by re ...Seismic interpretation|seismic–stratigraphic interpretation]] of a similar sand unit. Although prepared with an impressive degree of advanced technical com
  6 KB (808 words) - 15:30, 18 February 2022
• Sandstone
  [[File:Sandstone_Fig-1.png|thumb|300px|Fig 1. Udden-Wentworth Grain Scale (Sand scale) (Derived from Nichols)<ref name=Nichols>Nichols, G., 2009, Sedimento ...in size]] has a wide range of scale, from very coarse sand until very find sand. For the grain size measurement, its use a formula proposed by Krumbein in
  10 KB (1,508 words) - 15:44, 22 March 2019
• Forward modeling of seismic data
  ...with observed seismic sections, provides a means of accurately determining sand thickness where well data are sparse or absent.
  10 KB (1,513 words) - 21:16, 19 January 2022
• Example: mapping depocenters through time
  file:sedimentary-basin-analysis_fig4-4.png|{{figure number|1}}Major sand influxes into the northern Gulf of Mexico from Late Cretaceous to recently. ...m from approximately 6 Ma to 4 Ma (interval A). Deposition consists of net sand isopach thicks on the shelf and intraslope basins that are interpreted to b
  11 KB (1,496 words) - 18:17, 22 February 2022
• San Juan basin
  ...]] contains deposits of [[natural gas]], [[oil]], [[coal]], [[uranium]], [[sand]], [[gravel]], [[limestone]], [[humate]], [[gypsum]], road metal, building
  3 KB (411 words) - 15:01, 11 January 2016
• Cross-sealing fault
  ...g10-6.png|Figure 1]]. Both oil and gas are prevented from flowing into the sand in the hanging wall (R_d) by the cross-sealing fault.
  3 KB (399 words) - 21:31, 24 March 2022
• Pressure prediction: reconstructing burial history
  In the case of a sand body carried deeper by a [[growth fault]], first plot the [[Normal hydrosta
  3 KB (408 words) - 17:56, 17 February 2022
• Limitations of quantitative fault seal analysis
  ...l faults in [[compression]], “[[shale-outs]],” and the lack of [[lateral]] sand continuity in [[fluvial]] sequences can affect seal behavior.
  3 KB (398 words) - 17:35, 29 March 2022
• Yowlumne field
  ...X-Z and Y-Z showing basinward-stepping geometries exhibited by lobe-shaped sand bodies that make up the Yowlumne Sandstone. Note 660 m (2100 ft) of structu ...schultz_1992>Marino, A. W., and S. M. Schultz, 1992, Case study of Stevens sand horizontal well: Society of Petroleum Engineers, SPE 24910, p. 549-563.</re
  13 KB (1,896 words) - 19:02, 11 March 2019
• Identifying sea level cycle phase with biostratigraphy
  ...ew may reflect very shallow water depths due to downslope transport of the sand by [[gravity]]-flow processes. Data from shelf environments have a differen ...the shelf, depositing it directly on the upper slope. Remobilized sand and sand supplied directly from rivers during floods may be transported downslope by
  11 KB (1,548 words) - 16:58, 24 February 2022
• East Breaks reservoir rock
  ...tions. All four reservoir intervals are interpreted to be [[gravity]]-flow sand deposits.<ref name=ch04r7>Armentrout, J. M., 1991, Paleontological constrai ...pontaneous potential with true vertical depth displays. The GA-4 reservoir sand is below the displayed interval. Log profiles are annotated: arrow C = funn
  13 KB (1,771 words) - 17:24, 5 December 2023
• Siliciclastic shorelines and barrier island reservoirs
  ...M91FG191.JPG|Figure 1]]). Wave action and occasional storms act to deposit sand along the shoreface. The lower shoreface lies below fair-weather wave base M91Ch11FG73.JPG|{{figure number|2}}[[Lithofacies map]] for the upper Piper Sand interval of the Scott field, UK North Sea (from Guscott et al.<ref name=Gus
  18 KB (2,607 words) - 15:33, 15 January 2024
• Deep-water marine reservoirs
  ...eting and finding a large number of hydrocarbon pools in deep-water marine-sand systems. Only about 20% of these reservoirs had been developed to 2004.<ref ...eep-water sandstones may be ponded and stacked vertically into very thick, sand-rich intervals (Table 1). These reservoirs are very profitable as they can
  20 KB (2,850 words) - 15:33, 15 January 2024
• Fluvial input through time: Gulf of Mexico example
  sedimentary-basin-analysis_fig4-4.png|{{figure number|1}}Major sand influxes into the northern Gulf of Mexico from Late Cretaceous to Holocene.
  3 KB (406 words) - 17:03, 22 February 2022
• Delta plain, lower
  ...r and are separated by broad evaporative sequences. From the standpoint of sand-body formation, the major environmental sequence consists of bay-fill depos ...sequence. E. [[Core_description#Maturity|Well-sorted]] and cross-laminated sand layers alternating with silts and silty clays associated with the lower par
  27 KB (4,229 words) - 16:41, 6 April 2016
• Agglutinated microfossils
  ...r tests. The sedimentary particles used by these forms may include silt or sand grains, [[glauconite]], [[sponge spicule]]s, or even other foraminiferal te
  4 KB (468 words) - 15:16, 31 January 2022
• Natural gas occurrence
  ...is being investigated in other parts of the world. Natural gas from tight-sand reservoirs is also becoming a substantial part of the total natural gas pro
  4 KB (556 words) - 22:10, 7 January 2015
• Depositional environments
  ...nstruction in [[cross section]]. These deposits consist of abundant gravel-sand detritus on mostly fairly steep depositional slope. They are poorly sorted ...racteristic morphology, called oxbow lake. In braided river, deposition of sand and gravel grain sizes happens around the channel.
  26 KB (3,851 words) - 20:38, 28 February 2019

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