Search results

• Static hydrocarbon pressure gradients
  | frompg = 5-19 | topg = 5-19
  2 KB (195 words) - 15:17, 17 February 2022
• Buoyancy pressures and hydrocarbon presence
  | frompg = 5-1 | topg = 5-64
  3 KB (387 words) - 18:56, 16 February 2022
• Geostatic and lithostatic pressure
  | frompg = 5-6 | topg = 5-6
  3 KB (402 words) - 14:47, 16 February 2022
• Mudlogging: the mudlog
  ...[[length::2 in.]] to [[length::100 ft]] (1:600) and [[length::5 in.]] to [[length::100 ft]] (1:240). This track also includes the location (depth or interval ===Tracks 4 and 5: hydrocarbon evaluation===
  5 KB (752 words) - 15:39, 24 January 2022
• Free water level determination using pressure
  | frompg = 5-27 | topg = 5-28
  3 KB (463 words) - 17:54, 17 February 2022
• Spontaneous potential logs in water resistivity calculation
  ...ess correction is necessary if the zone SP is measured from is less than [[length::20 ft]] thick.) # Read the maximum SP response in a zone at least [[length::20 ft]] thick.
  6 KB (1,027 words) - 16:40, 5 April 2022
• Kerogen type and maturity
  ...this case [[vitrinite reflectance]], right figure) and follow across at [[length::2.1 km]] until you reach the maturity profile. This vitrinite reflectance | 5
  4 KB (503 words) - 14:18, 14 February 2022
• Seismic attributes
  ...frequency, and the length of the interval. Associating a variation in arc length with a physical change in the geology is possible, but it can be more chall ...W., 1986, Interactive fault mapping: a case study: The Leading Edge, vol. 5, no. 9, p. 1262–1272., 10., 1190/1., 1439303</ref> Denham and Nelson<ref
  6 KB (859 words) - 19:42, 27 January 2022
• Magnetics: interpreting residual maps
  [[file:using-magnetics-in-petroleum-exploration_fig14-5.png|300px|thumb|{{figure number|1}}Geologic map of an area of crystalline [ ...bility. As shown in [[:file:using-magnetics-in-petroleum-exploration_fig14-5.png|Figure 1]], the basement is of complex lithology and is highly fracture
  8 KB (1,109 words) - 17:41, 24 January 2022
• Displacement pressure: theory vs. reality
  ...xperimental study of secondary oil migration]: AAPG Bulletin, vol. 76, no. 5, p. 638–650.</ref> These experiments at best have column heights 19–23% ...mn of hydrocarbon in the field in the Tar Springs Formation reservoir is [[length::29 m]] [[depth::(95 ft]]).
  4 KB (587 words) - 13:36, 1 April 2022
• Buoyancy pressure
  | frompg = 5-1 | topg = 5-64
  4 KB (596 words) - 18:37, 17 February 2022
• Borehole gravity applications: examples
  ...gamma-gamma density log. The broader difference anomaly observed over the length of the interval is explained by the influence of the entire reef complex. ...after hydrofracturing the reservoir. In Case #4 the missed pay is about [[length::1 m]] from the well, and the density difference is very pronounced. Such p
  11 KB (1,596 words) - 18:08, 24 January 2022
• Predicting preservation and destruction of accumulations
  | topg = 11-5 ...hese accumulations are at least [[length::250 m]].y. old—maybe as old as [[length::300 m]].y.
  5 KB (782 words) - 22:36, 31 January 2022
• Fault seal behavior
  | frompg = 10-5 | topg = 10-5
  4 KB (598 words) - 19:47, 24 March 2022
• Seal thickness
  ...ght of the [[hydrocarbon column]]. Seals can be extremely thin—less than [[length::1 m]] thick that seal individual hydrocarbon [[accumulation]]s. There are ...tion of trapping effect of unfaulted caprock]: AAPG Bulletin, vol. 65, no. 5, p. 964.</ref><ref name=ch10r75>Slujik, D., Nederlof, M., H., 1984, [http:/
  3 KB (464 words) - 20:56, 31 March 2022
• How fault zones affect seal
  ...sediments near Lilstock, U.K., shows a gouge zone approximately [[length::5 m]] thick. The gouge consists predominantly of ductile shales and marls as
  4 KB (509 words) - 16:52, 29 March 2022
• Petrophysical analysis of Sorrento field wells
  ...but too tight to produce. Between these are [[length::30 ft]] [[depth::(8.5 m]]) of mesoto macroporous sandstone (flow units 1-4). ...ater production is remarkable, considering that the well lies only about [[length::25 ft]] (7 m) above the [[free water level]].
  7 KB (956 words) - 17:24, 11 April 2022
• Static gas pressure gradient estimation
  | frompg = 5-21 | topg = 5-25
  7 KB (979 words) - 15:24, 17 February 2022
• Pickett plot construction
  ...ub> point. Use a linear scale to measure the slope; for example, go down [[length::1 in.]] and over 2 in. ==Step 5: plot s_w lines==
  6 KB (878 words) - 16:16, 5 April 2022
• Water resistivity determination
  | 1-5 | Chart 5
  13 KB (2,077 words) - 17:26, 18 January 2022
• Borehole gravity
  ...ma-gamma [[density log]]. The broader difference anomaly observed over the length of the logged interval is explained by the structural influence of the reef ...g (VSP)]] surveys. The BHGM is stopped at each planned survey level, and a 5- to 10-min reading is taken. The blocky appearance of the log reflects the
  10 KB (1,517 words) - 15:54, 20 January 2022
• Conventional coring
  ...rom [[length::1.5 ft]] for short radius horizontal wells to greater than [[length::400 ft]] for vertical holes. ! Inner Barrel || Core Length (ft) || Special Features
  13 KB (1,885 words) - 20:49, 19 January 2022
• Rate of penetration
  ...etration is calculated by measuring the length of time required to drill [[length::1 ft]] of depth. This is typically done by reading the chart on the geolog ...nk pen on the geolograph places a small mark on the chart. Every [[length::5 ft]] the pen places a larger mark on the chart ([[:file:rate-of-penetration
  7 KB (1,049 words) - 19:02, 20 January 2022
• Seal capacity of different rock types
  ...condary hydrocarbon migration and entrapment]: AAPG Bulletin, vol. 63, no. 5, p. 723–760.</ref> Wells and Amaefule<ref name=ch10r94>Wells, J., D., Ama * Most good sands can trap only [[length::50 ft]] or less of oil column.
  5 KB (760 words) - 20:55, 31 March 2022
• Sampling for paleontology
  ...cted for each joint of drill pipe added to the drill string (i.e., every [[length::30 ft]], or 9 m) and represents an amalgamated sample of the rocks penetra ...vals for each joint of drill pipe added to the drill string (i.e., every [[length::30 ft]], or 9 m). However, the geologist can specify a different interval
  7 KB (1,051 words) - 18:08, 24 January 2022
• Seismic data acquisition on land
  file:seismic-data-acquisition-on-land_fig5.png|{{figure number|5}}(a) Off end shooting. (b) Split spread shooting. ...me examples include dynamite in “shot holes” ranging in depth from 10 to [[length::300 ft]] (3 to 100 m) and primacord in trenches covered by a few inches of
  10 KB (1,389 words) - 16:20, 20 January 2022
• Rock quality
  ...carbonate and sandstone reservoirs: Amoco Production Company Report F76-G-5, 25 p. (unpublished).</ref> developed the following equation to calculate r ...cting-reservoir-system-quality-and-performance_fig9-20.png|{{figure number|5}}Hypothetical capillary pressure curves.
  10 KB (1,534 words) - 16:53, 4 April 2022
• Workovers
  ...[:file:workovers_fig1.png|Figure 1]]. The production casing is only 5 to [[length::9 in.]] in diameter, and it has been run into a corkscrew-shaped hole that ...asons just noted are generally completed to yield a profit in a reasonable length of time. Those done for the following reasons may have little profit incent
  12 KB (1,834 words) - 15:25, 24 January 2022
• Core-to-log transformations and porosity-permeability relationships
  ...[conglomerate|conglomeratic]] reservoir, where the clast size can exceed [[length::6 in.]] or more. Any attempt to determine an average porosity from convent ...3</sup> of material measured. When this is compared to a 1-in. core plug [[length::3 in.]] long, the log measures almost 400 times the volume measured by the
  14 KB (1,893 words) - 20:15, 2 February 2016
• Seismic inversion
  seismic-inversion_fig5.png|{{figure number|5}}The model-based inversion of the line through the river channel system of ...nsional data]]). Borehole B from [[:file:seismic-inversion_fig5.png|Figure 5]], which was the dry hole, is indicated by the faint white crosshairs at th
  8 KB (1,196 words) - 18:48, 21 January 2022
• Seismic data: building a stratigraphic model
  ...ismic_trace traces] for interpretation. The receiver spacing is usually [[length::10 ft]]. This gives actual [http://wiki.seg.org/wiki/Dictionary:Traveltime ...ery coarse velocity data can be obtained from a checkshot survey with only 5 or 6 traveltimes per well.
  5 KB (805 words) - 19:06, 27 January 2022
• Coal bed methane (UDip)
  ...cy|Henry Darcy]] in 1856 is comparable to the pressure difference per unit length. This relationship was derived from data obtained from several experiments :L = core length, cm
  10 KB (1,576 words) - 14:42, 2 April 2019
• Electrical methods
  ...materials to investigating resistivities down to depths as great as 1 to [[length::2 km]], although greater depths of investigation are possible with some te ...etic methods: Proceedings of the IEEE, v. 77, n. 2, p. 338–362., 10., 1109/5., 18630</ref> This primary EM field induces currents in subsurface conducto
  15 KB (2,130 words) - 21:19, 19 January 2022
• Facies map
  ...he gravity flows); 4 = deep-water deposits of the northern Adriatic Basin; 5 = condensed deposits of the Rosso Ammonitico Veronese (lower member). From file:sedimentary-basin-analysis_fig4-38.png|{{figure number|5}}Net sand distribution of shelf areas contoured parallel to the shelf edge
  15 KB (2,070 words) - 20:34, 7 July 2016
• Mudlogging: drill cuttings analysis
  ...eflect the various lithologies drilled over a 10-ft interval. The interval length can vary depending on the drilling rate and the detail needed for reservoir ...re typically washed through a 5-mm sieve. Particles greater than [[length::5 mm]] usually contain a high percentage of lost circulation material and cav
  10 KB (1,482 words) - 15:25, 24 January 2022
• Open hole tools
  | Gamma ray || [[length::2 ft]] || [[length::12 in]] || Well-to-well correlation and estimate ''V''_sh || Sen | Spectral gamma ray || [[length::3 ft]] || [[length::16 in]] || Well-to-well correlation and estimate ''V''_sh || Sen
  23 KB (3,350 words) - 17:26, 18 January 2022
• Offshore exploration and exploitation
  ...structures. This method generates seismic cubes according to the depth and length of the seismic line and the width of the hydrophones arrangement. ...s of platforms: 1, 2) conventional fixed platforms; 3) compliant tower; 4, 5) vertically moored tension leg and mini-tension leg platform; 6) spar; 7, 8
  5 KB (708 words) - 22:00, 10 April 2019
• Full waveform acoustic logging
  ...an at 20 kHZ; (2) the source-receiver spacing is longer, on the order of [[length::10 ft]] (3.05 m); and (3) the receiver is commonly an array consisting of ...ed and digitized, with the typical digitization interval being 5 μsec. The length of the time window recorded varies from 2 to 10 msec, depending on the sour
  10 KB (1,530 words) - 20:47, 19 January 2022
• Structural exploration: thrust belt example
  exploring-for-structural-traps_fig20-5.png|{{figure number|2}}Tectonic setting for the western U.S. relevant to La [[:file:exploring-for-structural-traps_fig20-5.png|Figure 2]] depicts the tectonic setting for the western U.S. relevant t
  14 KB (1,897 words) - 20:01, 3 February 2022
• Magnetic field: local variations
  ...sed by fault throws or basement highs unless basement is deep (> [[length::5 km]], approximately). In this case the slightly magnetic sedimentary rocks
  6 KB (946 words) - 19:56, 27 January 2022
• Core description
  ...ks: The University of Texas at Austin, Bureau of Economic Geology Handbook 5, 43 p.</ref> and Boyles et al.<ref name=pt05r28>Boyles, J. M., A. J. Scott, ...(1.3 mm) high. Usually a scale of [[length::1 in]] = [[length::5 ft]] or [[length::10 ft]] is appropriate.
  13 KB (1,786 words) - 20:50, 19 January 2022
• Wellbore trajectory
  wellbore-trajectory_fig5.png|{{figure number|5}}Kicking off with a jet bit.]] ...tom in the desired trajectory ([[:file:wellbore-trajectory_fig5.png|Figure 5]]). Weight is applied to the bit while it is rotated into the pocket. This
  14 KB (2,167 words) - 20:46, 19 January 2022
• Perforation design
  [[file:UreigaAlmandiFigure5.jpg|thumb|200px|{{figure number|5}}Guns' conveyance methods.]] ...plug the perforation hole. 42֯ is the optimum angle that would affect the length and diameter of the shots. After the shots have been detonated, the shape o
  12 KB (1,786 words) - 21:02, 21 April 2022
• Stimulation
  ...uses the fracture to extend from the wellbore, and this growth in fracture length is accompanied by an increase in fracture width at the wellbore and proport [[file:stimulation_fig5.png|300px|thumb|{{figure number|5}}Proppant is introduced to fracture.]]
  24 KB (3,633 words) - 13:55, 24 January 2022
• East Breaks reservoir rock
  File:Sedimentary-basin-analysis fig4-43.png|{{figure number|5}}North-South seismic section through the East Breaks 160-161 field. ...is_fig4-42.png|Figures 4]], [[:file:sedimentary-basin-analysis_fig4-43.png|5]], and [[:file:sedimentary-basin-analysis_fig4-44.png|2]]). The 160-1 elect
  13 KB (1,771 words) - 17:24, 5 December 2023
• Drill stem testing
  ...arlougher, R. C., 1977, Advances in well test analysis: SPE Monograph Vol. 5, Society of Petroleum Engineers, New York, p. 90–103.</ref><ref name=pt03 ===Length of test interval===
  26 KB (4,009 words) - 15:09, 24 January 2022
• Well completion
  well-completions_fig5.png|{{figure number|5}}Wellbore diagram of a conventional triple completion. ...ell-completions_fig4.png|Figures 4]] and [[:file:well-completions_fig5.png|5]] illustrate these multiple completions.
  19 KB (2,910 words) - 21:06, 18 January 2022
• Dipmeter
  ...te that the curves are responding to apparent bedding features less than [[length::1 in.]] thick. ...harply distinguishes between [[sandstone]] and shale layers thinner than [[length::1 in.]] By establishing a cutoff line as shown, everything to the right ca
  14 KB (2,128 words) - 17:25, 18 January 2022
• Types of wells
  ...of keeping it substantially within the reservoir target until the desired length of horizontal penetration is reached ([[:File:M91Figure161.JPG|Figure 1]]). ...steering efficiency of a horizontal well; the percentage of the total well length within the target zone beyond the entry point. Modern LWD resistivity logs
  22 KB (3,567 words) - 17:20, 11 March 2019
• Cross-well electromagnetic tomography monitoring of fluid distribution
  | Frequency || 5-1000 Hz || 5-1000 Hz || Harmonics > 1000 Hz | Length || 9.88 m (32.4 ft) || 22.50 m (83.8 ft) || Tool string length
  18 KB (2,715 words) - 18:29, 8 February 2024

View (previous 50 | next 50) (20 | 50 | 100 | 250 | 500)