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There is a page named "Porosity" on this wiki. See also the other search results found.
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- | 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 car24 KB (3,450 words) - 19:09, 20 January 2022
- ...] 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
- #REDIRECT [[Density-neutron log porosity]]42 bytes (4 words) - 19:46, 14 January 2015
- ...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
- #REDIRECT [[Density-neutron log porosity]]42 bytes (4 words) - 16:56, 19 December 2014
- ...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
- * [[Basics of carbonate porosity formation and preservation]]2 KB (251 words) - 18:32, 6 April 2022
- ...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 por5 KB (708 words) - 17:27, 5 December 2023
- #REDIRECT [[Sandstone porosity and permeability prediction]]60 bytes (6 words) - 20:15, 19 May 2014
- 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. Copyr5 KB (659 words) - 16:54, 12 April 2022
- #REDIRECT [[Carbonate porosity formation and preservation]]59 bytes (6 words) - 14:52, 19 December 2014
- #REDIRECT [[Core-to-log transformations and porosity-permeability relationships]]81 bytes (6 words) - 15:37, 19 December 2014
- ...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, u29 KB (4,601 words) - 16:09, 12 April 2016
- | 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
Page text matches
- #REDIRECT [[Density-neutron log porosity]]42 bytes (4 words) - 19:46, 14 January 2015
- #REDIRECT [[Density-neutron log porosity]]42 bytes (4 words) - 16:56, 19 December 2014
- #REDIRECT [[Sandstone porosity and permeability prediction]]60 bytes (6 words) - 20:15, 19 May 2014
- #REDIRECT [[Carbonate porosity formation and preservation]]59 bytes (6 words) - 14:52, 19 December 2014
- #REDIRECT [[Core-to-log transformations and porosity-permeability relationships]]81 bytes (6 words) - 15:37, 19 December 2014
- ...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
- ==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
- ...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
- .... 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
- ...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
- ...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 sandstones3 KB (425 words) - 17:11, 5 April 2022
- ...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 porosity2 KB (354 words) - 22:07, 1 February 2022
- ...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 por5 KB (708 words) - 17:27, 5 December 2023
- * 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 f5 KB (703 words) - 13:52, 5 April 2022
- ...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, an7 KB (870 words) - 20:30, 5 April 2022
- # 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 2×46 KB (878 words) - 16:16, 5 April 2022
- ...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
- ...fter deposition.It can have important effects in decreasing or enhancing [[porosity]] and [[permeability]].691 bytes (74 words) - 16:13, 22 October 2014
- 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. Copyr5 KB (659 words) - 16:54, 12 April 2022
- * 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/dictionar5 KB (674 words) - 21:22, 6 April 2022
- ...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
- ...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
- * [[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-ups6 KB (761 words) - 13:47, 7 April 2022
- ...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
- ...] 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
- ...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. 3648 bytes (87 words) - 15:34, 10 December 2015
- ...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 or907 bytes (132 words) - 21:42, 18 September 2014
- **Dolomitized intertidal laminites (intercrystalline [[porosity]]) **Siliciclastic supratidal caps (intergranular porosity)5 KB (708 words) - 21:00, 6 April 2022
- * [[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
- * Primary [[porosity]] preserved due to selective [[Reservoir quality#Cementation|cementation]] * [[Secondary porosity]] created by cement and/or matrix dissolution2 KB (294 words) - 21:01, 4 February 2022
- ...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
- ...-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
- ...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
- | 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
- 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 porou4 KB (543 words) - 14:11, 21 August 2014
- ...ts be corrected to their original thickness before burial using a specific porosity-depth function for each [[lithologic]] unit. This involves sequential [[bac1,008 bytes (139 words) - 19:54, 25 June 2015
- * [[Porosity|Porosities]] of different lithologies * φ = weighted average of rock [[porosity]]3 KB (402 words) - 14:47, 16 February 2022
- ...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
- ...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
- | 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.<r4 KB (544 words) - 21:38, 4 February 2022
- ==Relation between subsurface diagenesis with porosity changing== ===Increase of porosity===16 KB (2,395 words) - 21:18, 9 January 2024
- ...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 dark9 KB (1,380 words) - 17:25, 18 January 2022
- ===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 condi7 KB (1,049 words) - 19:02, 20 January 2022
- ...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
- ...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=pt05r14 KB (2,121 words) - 21:16, 19 January 2022
- ...rements of the formation (electric logs such as gamma ray, resistivity, or porosity), drilling parameters (e.g., downhole torque, weight on bit, temperature, o2 KB (206 words) - 21:17, 3 December 2015
- ...undings. The borehole gravity meter has broad application, from locating [[porosity]] in wildcats or through [[casing]] in old wells to monitoring fluid change1 KB (187 words) - 17:53, 25 January 2022
- ...[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 to5 KB (694 words) - 20:41, 4 April 2022
- ===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 w11 KB (1,551 words) - 16:49, 11 January 2016
- ...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 t3 KB (478 words) - 17:09, 1 February 2022