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There is a page named "Porosity" on this wiki. See also the other search results found.

Page title matches

  • Porosity
    | chapter = Porosity ...most all hydrocarbon reservoirs are composed of sedimentary rocks in which porosity values generally vary from 10 to 40% in sandstones and from 5 to 25% in car
    24 KB (3,450 words) - 19:09, 20 January 2022
  • Density-neutron log porosity
    ...] data, especially in formations of complex lithology. Better estimates of porosity are possible with the combination than using either tool or sonic separatel ...y to porosity using charts in a log interpretation chartbook, or calculate porosity from bulk density using this equation:
    12 KB (1,763 words) - 16:18, 5 April 2022
  • Determining porosity from density–neutron logs
    #REDIRECT [[Density-neutron log porosity]]
    42 bytes (4 words) - 19:46, 14 January 2015
  • Predicting sandstone reservoir porosity
    ...porosity. This section presents different methods of predicting sandstone porosity. Choose the method(s) most appropriate to your situation. ==Porosity-depth plots==
    10 KB (1,384 words) - 15:00, 6 April 2022
  • Predicting sandstone porosity and permeability
    #REDIRECT [[Sandstone porosity and permeability prediction]]
    60 bytes (6 words) - 20:15, 19 May 2014
  • Determining porosity from density-neutron logs
    #REDIRECT [[Density-neutron log porosity]]
    42 bytes (4 words) - 16:56, 19 December 2014
  • Sandstone porosity and permeability prediction
    ...t on porosity and permeability, this subsection concentrates on predicting porosity and permeability by considering the effects of diagenesis. * [[Predicting sandstone reservoir porosity]]
    2 KB (300 words) - 20:29, 5 April 2022
  • Predicting carbonate porosity and permeability
    * [[Basics of carbonate porosity formation and preservation]]
    2 KB (251 words) - 18:32, 6 April 2022
  • Carbonate porosity formation and preservation
    ...lities than an initially poor-quality rock becoming a good-quality rock. [[Porosity]] can be created late in a rock's life; however, concentrating on the early ...o. 2, p. 207–250. Classic reference for basic concepts regarding carbonate porosity.</ref> Surface and shallow diagenesis mainly occurs in fabric-selective por
    5 KB (708 words) - 17:27, 5 December 2023
  • Midale porosity, pore geometries, and petrophysics
    Most of the [[porosity]] in the vuggy [[packstone]] facies is molds and [http://www.merriam-webste ...ance_fig9-102.png|300px|thumb|{{figure number|1}}Crossplot of routine core porosity and permeability from the Midale in an example well at Weyburn field. Copyr
    5 KB (659 words) - 16:54, 12 April 2022
  • Basics of carbonate porosity formation and preservation
    #REDIRECT [[Carbonate porosity formation and preservation]]
    59 bytes (6 words) - 14:52, 19 December 2014
  • Core-log transformations and porosity-permeability relationships
    #REDIRECT [[Core-to-log transformations and porosity-permeability relationships]]
    81 bytes (6 words) - 15:37, 19 December 2014
  • Core-to-log transformations and porosity-permeability relationships
    | chapter = Core-log transformations and porosity-permeability relationships ...lity-relationships_fig1.png|{{figure number|1}}Plot showing unshifted core porosity in spiked format, together with bulk density log.
    14 KB (1,893 words) - 20:15, 2 February 2016
  • Relationship between porosity and permeability on fractured basement reservoir
    ...y, rock is fractured can be categorized into 3 type geologically, based on porosity system : ...ation. However, the reservoir problem does not include both of the another porosity system types. Porous of matrix from a formation that has fracture matrix, u
    29 KB (4,601 words) - 16:09, 12 April 2016

Page text matches

  • Determining porosity from density–neutron logs
    #REDIRECT [[Density-neutron log porosity]]
    42 bytes (4 words) - 19:46, 14 January 2015
  • Determining porosity from density-neutron logs
    #REDIRECT [[Density-neutron log porosity]]
    42 bytes (4 words) - 16:56, 19 December 2014
  • Predicting sandstone porosity and permeability
    #REDIRECT [[Sandstone porosity and permeability prediction]]
    60 bytes (6 words) - 20:15, 19 May 2014
  • Basics of carbonate porosity formation and preservation
    #REDIRECT [[Carbonate porosity formation and preservation]]
    59 bytes (6 words) - 14:52, 19 December 2014
  • Core-log transformations and porosity-permeability relationships
    #REDIRECT [[Core-to-log transformations and porosity-permeability relationships]]
    81 bytes (6 words) - 15:37, 19 December 2014
  • Sandstone porosity and permeability prediction
    ...t on porosity and permeability, this subsection concentrates on predicting porosity and permeability by considering the effects of diagenesis. * [[Predicting sandstone reservoir porosity]]
    2 KB (300 words) - 20:29, 5 April 2022
  • Carbonate diagenetic stages
    ==Stages affect porosity== ...o. 2, p. 207–250. Classic reference for basic concepts regarding carbonate porosity.</ref>
    6 KB (727 words) - 19:06, 6 April 2022
  • Postaccumulation cementation
    ...a/bulletns/1990-91/data/pg/0075/0007/0000/1145.htm Empirical prediction of porosity and permeability in sandstones]: AAPG Bulletin, vol. 75, p. 1145–1160.</r ...l point]] as the pore volume within the structural closure decreases. If [[porosity]] is lowered sufficiently, the [[accumulation]] may be subeconomic in size.
    3 KB (430 words) - 15:35, 1 February 2022
  • Sandstone diagenesis: composition and texture
    .... The ratio of quartz to [[Ductility|ductile]] grains is key to compaction porosity loss. ==Influence of grain size on porosity and diagenesis==
    5 KB (729 words) - 20:48, 5 April 2022
  • Pore system shapes
    ...y'''. In most cases, water saturation (S<sub>w</sub>) of rocks with Archie porosity can be predicted from log analysis using the [[Archie equation]] * Φ = [[porosity]]
    4 KB (528 words) - 13:53, 4 April 2022
  • Reservoir system quality prediction
    ...ermining reservoir system performance.The interrelationship of reservoir [[porosity]], [[permeability]], thickness, and lateral distribution determines reservo ...o. 2, p. 207–250. Classic reference for basic concepts regarding carbonate porosity.</ref> compares variables affecting reservoir system quality for sandstones
    3 KB (425 words) - 17:11, 5 April 2022
  • Fieldwork risk assessment
    ...itical element. For reservoir rock, the main risk might be thickness and [[porosity]] preservation. For source rock, the main risk might be organic richness an * Reservoir porosity
    2 KB (354 words) - 22:07, 1 February 2022
  • Carbonate porosity formation and preservation
    ...lities than an initially poor-quality rock becoming a good-quality rock. [[Porosity]] can be created late in a rock's life; however, concentrating on the early ...o. 2, p. 207–250. Classic reference for basic concepts regarding carbonate porosity.</ref> Surface and shallow diagenesis mainly occurs in fabric-selective por
    5 KB (708 words) - 17:27, 5 December 2023
  • Archie equation
    * Φ = [[porosity]] ...lution), have clay in their matrix, or have moldic, vuggy, or [[fracture]] porosity require adjustments. The table below lists the five variables and methods f
    5 KB (703 words) - 13:52, 5 April 2022
  • Sandstone diagenetic processes
    ...ore type and geometry of a sandstone and therefore controls its ultimate [[porosity]] and [[permeability]]. Early diagenetic patterns correlate with environmen ...ation destroys pore space; grain leaching creates it. Compaction decreases porosity through grain rearrangement, plastic [[deformation]], pressure solution, an
    7 KB (870 words) - 20:30, 5 April 2022
  • Pickett plot construction
    # Plot points of matching [[porosity]] and true resistivity (R<sub>t</sub> ) on log-log paper. ...ormance_fig9-36.png|thumb|300px|{{figure number|1}}Plot points of matching porosity and true resistivity (R<sub>t</sub>) values obtained from well logs on 2×4
    6 KB (878 words) - 16:16, 5 April 2022
  • Predicting sandstone reservoir porosity
    ...porosity. This section presents different methods of predicting sandstone porosity. Choose the method(s) most appropriate to your situation. ==Porosity-depth plots==
    10 KB (1,384 words) - 15:00, 6 April 2022
  • Diagenesis
    ...fter deposition.It can have important effects in decreasing or enhancing [[porosity]] and [[permeability]].
    691 bytes (74 words) - 16:13, 22 October 2014
  • Midale porosity, pore geometries, and petrophysics
    Most of the [[porosity]] in the vuggy [[packstone]] facies is molds and [http://www.merriam-webste ...ance_fig9-102.png|300px|thumb|{{figure number|1}}Crossplot of routine core porosity and permeability from the Midale in an example well at Weyburn field. Copyr
    5 KB (659 words) - 16:54, 12 April 2022
  • Sequences during moderate-amplitude, high-frequency cycles
    * Primary [[porosity]] greatest in grainy upper parts of sequences and thicker [[length::(10 m]] * [[Porosity]] in the sequence tops plugged by [http://www.merriam-webster.com/dictionar
    5 KB (674 words) - 21:22, 6 April 2022
  • Diagenetic trap regime
    ...4 | Diagenetic traps || rowspan = 2 | Diagenetic reservoirs; Form where [[porosity]] is created as a result of local [[Diagenesis|diagenetic processes]] such ...sult of localized leaching of nonreservoir-quality rock to create enhanced porosity and [[permeability]]. Common beneath [[unconformity]] surfaces.
    5 KB (645 words) - 16:14, 13 April 2022
  • Coal bed methane (UDip)
    ...free gas or can be saturated with water. The system is then called a “dual-porosity reservoir”, one characterized by a complex interaction of the coal matrix ==The porosity and permeability of coal==
    10 KB (1,576 words) - 14:42, 2 April 2019
  • Sequences during high-amplitude, high-frequency cycles
    * [[Porosity]] plugged by caliche at sequence caps .../www.oxforddictionaries.com/us/definition/american_english/cap-rock cap] [[porosity]] is intergranular in shoals and in nondolomitized build-ups
    6 KB (761 words) - 13:47, 7 April 2022
  • Morrow lithofacies and pore types: Sorrento field
    ...we see a picture of a clastic reservoir with wide heterogeneity in total [[Porosity|porosities], [[Pore and pore throat sizes|pore-throat sizes]], and [[capill ...solution?) porosity also may be present but is minor. (For definitions of porosity types, see [[Reservoir quality]].)
    6 KB (769 words) - 17:23, 11 April 2022
  • Density-neutron log porosity
    ...] data, especially in formations of complex lithology. Better estimates of porosity are possible with the combination than using either tool or sonic separatel ...y to porosity using charts in a log interpretation chartbook, or calculate porosity from bulk density using this equation:
    12 KB (1,763 words) - 16:18, 5 April 2022
  • Meteoric diagenesis
    ...le, A color guide to the petrography of carbonate rocks: Grains, textures, porosity, diagenesis: [http://store.aapg.org/detail.aspx?id=649 AAPG Memoir 77] p. 3
    648 bytes (87 words) - 15:34, 10 December 2015
  • Bioturbation
    ...or reworking of sediment by living organisms. It may enhance or decrease porosity and permeability. For instance, burrows filled with sand grains in a mud or
    907 bytes (132 words) - 21:42, 18 September 2014
  • Sequences during low-amplitude, high-frequency cycles
    **Dolomitized intertidal laminites (intercrystalline [[porosity]]) **Siliciclastic supratidal caps (intergranular porosity)
    5 KB (708 words) - 21:00, 6 April 2022
  • Pressure compartments
    * [[Porosity]] loss due to compaction is less in overpressured and more in underpressure ...educes the supply of free ions associated with cementation and secondary [[porosity]] formation.
    6 KB (828 words) - 17:57, 17 February 2022
  • Types of diagenetic traps
    * Primary [[porosity]] preserved due to selective [[Reservoir quality#Cementation|cementation]] * [[Secondary porosity]] created by cement and/or matrix dissolution
    2 KB (294 words) - 21:01, 4 February 2022
  • Sandstone
    ...orosity and increase the bed thinning. Deep burial cause decrease the sand porosity dramatically. [[File:Sandstone_Fig-3.png|thumb|300px|Fig. 3. Porosity and Compaction (Derived form Nichols)<ref name=Nichols />]]
    10 KB (1,508 words) - 15:44, 22 March 2019
  • Sandstone permeability prediction from texture
    ...-60.png|300px|thumb|{{figure number|1}}Grain size affects permeability and porosity.<ref name=ch09r11>Coalson, E. B., Hartmann, D. J., and Thomas, J. B., 1990, ...nce_fig9-60.png|Figure 1]] shows how grain size affects permeability and [[porosity]].
    9 KB (1,118 words) - 17:03, 6 April 2022
  • Cased hole tools
    ...ty and water salinity are known. The porosity devices are used to estimate porosity when lithology is known. Table 1 lists the types of devices used for these | rowspan = 2 | [[Porosity]] || [[Basic open hole tools#Compensated neutron|Compensated neutron]]
    10 KB (1,427 words) - 16:26, 18 January 2022
  • Core-to-log transformations and porosity-permeability relationships
    | chapter = Core-log transformations and porosity-permeability relationships ...lity-relationships_fig1.png|{{figure number|1}}Plot showing unshifted core porosity in spiked format, together with bulk density log.
    14 KB (1,893 words) - 20:15, 2 February 2016
  • Log interpretation: initial quick scan
    Determining the [[porosity]] and [[True resistivity determination|true resistivity]] of a zone is the ...ich to measure changes. In this case, the [[Basic_open_hole_tools#Porosity|porosity log]] is the primary reconnaissance measurement. By first finding the porou
    4 KB (543 words) - 14:11, 21 August 2014
  • Decompaction
    ...ts be corrected to their original thickness before burial using a specific porosity-depth function for each [[lithologic]] unit. This involves sequential [[bac
    1,008 bytes (139 words) - 19:54, 25 June 2015
  • Geostatic and lithostatic pressure
    * [[Porosity|Porosities]] of different lithologies * φ = weighted average of rock [[porosity]]
    3 KB (402 words) - 14:47, 16 February 2022
  • Fracture traps
    ...ture traps may not. Some might argue that [[fracture]]s are just another [[porosity]] type and should be thought of as part of the [[reservoir]], not as a trap ...rvoir'''—Reservoir in which most of the [[permeability]] and some of the [[porosity]] is provided by open fractures.
    3 KB (461 words) - 16:04, 13 April 2022
  • Intact membrane seal leakage
    ...pressure) is less than the capillary displacement pressure of the matrix [[porosity]] of the seal. Under these conditions, the relative [[permeability]] of the ...occurs, oil can leak through the [[fracture]]s without invading the matrix porosity.
    3 KB (475 words) - 17:08, 1 February 2022
  • Diagenesis: information from petrology
    | Primary [[porosity]] preservation || Indicates facies patterns may control hydrocarbon distrib ...rap location; mineralogy and/or facies may control location of dissolution porosity || Use [[sequence stratigraphy]], hydrologic, or thermal maturity models.<r
    4 KB (544 words) - 21:38, 4 February 2022
  • Subsurface diagenesis and its relation with diagenetic trap on carbonate rocks reservoir
    ==Relation between subsurface diagenesis with porosity changing== ===Increase of porosity===
    16 KB (2,395 words) - 21:18, 9 January 2024
  • Formation evaluation of naturally fractured reservoirs
    ...because other features such as a rough borehole, shales, and changes in [[porosity]], lithology, and tool centralization might produce amplitude drops that ha When the tool is run through an unfractured section of reasonably constant porosity, lithology, borehole rugosity, and tool centralization , the shades of dark
    9 KB (1,380 words) - 17:25, 18 January 2022
  • Rate of penetration
    ===Relative porosity=== ...tively slow ROP in rocks having low matrix porosity to rocks having higher porosity and faster ROP. This comparison requires that the prevailing drilling condi
    7 KB (1,049 words) - 19:02, 20 January 2022
  • Pressure prediction: analysis of well-log and seismic data
    ...variable within shale sections. Because porosity is related to compaction, porosity measurements from well logs can be calibrated to fluid pressure in the pore ...major remaining variable that affects [[rate of penetration]] in shale is porosity.
    5 KB (733 words) - 17:57, 17 February 2022
  • Overview of routine core analysis
    ...PA</ref> require laboratory analysis of large diameter cores to evaluate [[porosity]], hydrocarbon saturation, and net pay. (For more on continuous coring, see ...res. These samples can provide useful details of the lithology, petrology, porosity, [[permeability]], and hydrocarbon content of the formation.<ref name=pt05r
    14 KB (2,121 words) - 21:16, 19 January 2022
  • Logging while drilling
    ...rements of the formation (electric logs such as gamma ray, resistivity, or porosity), drilling parameters (e.g., downhole torque, weight on bit, temperature, o
    2 KB (206 words) - 21:17, 3 December 2015
  • Gravity in petroleum exploration
    ...undings. The borehole gravity meter has broad application, from locating [[porosity]] in wildcats or through [[casing]] in old wells to monitoring fluid change
    1 KB (187 words) - 17:53, 25 January 2022
  • What is permeability?
    ...[porosity]] of 30%, and flow unit 2 has a porosity of 10%. The variance in porosity becomes the indicator of the contrast in pore throat size when converted to
    5 KB (694 words) - 20:41, 4 April 2022
  • Vibro-sesismic to increasing the production rate of coal bed methane
    ===Porosity and permeability=== ...pearmebility is the capacity of pore material to let fluida flow.When the porosity increase, the pearmeability will also increase, and the production result w
    11 KB (1,551 words) - 16:49, 11 January 2016
  • Fractured membrane seal leakage
    ...petroleum column]] exceeds the [[displacement pressure]] of the fracture [[porosity]] in the seal. ...cks, so it is easier for petroleum to invade the fractures than the matrix porosity. In fact, many fractured rocks with open fractures have apertures so wide t
    3 KB (478 words) - 17:09, 1 February 2022

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