Third derivative - Revision history

98.116.159.141: Undid revision 642095777 by 98.116.159.141 (talk) Silly joke. Undone.

2015-01-12T02:24:15Z

Undid revision 642095777 by 98.116.159.141 (talk) Silly joke. Undone.

← Older revision		Revision as of 04:24, 12 January 2015
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	~~{{DISPLAYTITLE:Leverett ''J''-function}}~~		Friends call him Royal Cummins. The occupation he's been occupying for years is a messenger. Arizona has always been my residing place but my spouse desires us to move. To play badminton is something he truly enjoys performing.<br><br>Feel free to surf to my web site; [http://Skyliner-Ehrengarde.de/index.php?mod=users&action=view&id=11990 extended auto warranty]
	~~{{technical\|date=June 2012}}~~
	~~In [[petroleum engineering]], the '''Leverett ''J''-function''~~' is a ~~dimensionless function of [[water saturation]] describing the [[capillary pressure]],<ref>~~
	~~{{cite journal\|author=M~~.C. ~~Leverett\|title=Capillary behaviour in porous solids\|journal=Transactions of the AIME\|issue=142\|pages=159–172\|year=1941}}~~
	~~</ref>~~
	~~:<math>J(S_w) = \frac{p_c(S_w) \sqrt{k/\phi}}{\gamma \cos \theta}</math>~~
	~~where <math>S_w</math>~~ is ~~the water saturation measured as a fraction,~~ <~~math~~>~~p_c~~<~~/math~~> ~~is the~~ [[capillary pressure]] (in [[Pascal (unit)\|pascal]]), <math>k</math> is the [[Permeability (fluid)\|permeability]] (measured in [[Square metre\|m²]]), <math>\phi</math> is the [[porosity]] (0-1), <math>\gamma</~~math> is the [[surface tension]] and <math>\theta<~~/~~math> is the [[contact angle]]. The function is important in that it is constant for a given saturation within a reservoir, thus relating reservoir properties for neighboring beds.~~

	~~The Leverett ''J''~~-~~function is an attempt at extrapolating capillary pressure data for a given rock to rocks that are similar but with differing permeability, porosity and wetting properties~~. ~~It assumes that the porous rock can be modelled as a bundle of non-connecting capillary tubes, where the factor <math>\sqrt{k/\phi}<~~/~~math> is a characteristic length of the capillaries' radii~~.

	==~~See also~~==
	* [[Amott test]]

	~~==References==~~
	~~{{reflist}}~~

	~~==External links==~~
	* http://www.ux.uis.no/~s-skj/ResTek1-v03/Notater/Tamu.Lecture.Notes/Capillary.Pressure/Lecture_16.ppt

	~~[[Category:Petroleum engineering~~]]


	~~{{fluiddynamics-stub}}~~

en>Monkbot: Fix CS1 deprecated date parameter errors

2014-01-30T21:43:28Z

Fix CS1 deprecated date parameter errors

← Older revision		Revision as of 23:43, 30 January 2014
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	~~I would like to introduce myself to you~~, ~~I am Andrew and my wife doesn~~'~~t like it at all~~. ~~What I adore performing~~ is ~~soccer but I don't have~~ the ~~time recently~~. ~~Her family members lives~~ in ~~Ohio~~. ~~Invoicing~~ is ~~what I do~~.<br><br>~~Feel free to visit my web site:~~ [http://~~formalarmour~~.~~com~~/~~index.php?do=~~/~~profile~~-~~26947~~/~~info~~/ ~~online psychic reading~~]		{{DISPLAYTITLE:Leverett ''J''-function}}
			{{technical\|date=June 2012}}
			In [[petroleum engineering]], the '''Leverett ''J''-function''' is a dimensionless function of [[water saturation]] describing the [[capillary pressure]],<ref>
			{{cite journal\|author=M.C. Leverett\|title=Capillary behaviour in porous solids\|journal=Transactions of the AIME\|issue=142\|pages=159–172\|year=1941}}
			</ref>
			:<math>J(S_w) = \frac{p_c(S_w) \sqrt{k/\phi}}{\gamma \cos \theta}</math>
			where <math>S_w</math> is the water saturation measured as a fraction, <math>p_c</math> is the [[capillary pressure]] (in [[Pascal (unit)\|pascal]]), <math>k</math> is the [[Permeability (fluid)\|permeability]] (measured in [[Square metre\|m²]]), <math>\phi</math> is the [[porosity]] (0-1), <math>\gamma</math> is the [[surface tension]] and <math>\theta</math> is the [[contact angle]]. The function is important in that it is constant for a given saturation within a reservoir, thus relating reservoir properties for neighboring beds.

			The Leverett ''J''-function is an attempt at extrapolating capillary pressure data for a given rock to rocks that are similar but with differing permeability, porosity and wetting properties. It assumes that the porous rock can be modelled as a bundle of non-connecting capillary tubes, where the factor <math>\sqrt{k/\phi}</math> is a characteristic length of the capillaries' radii.

			==See also==
			* [[Amott test]]

			==References==
			{{reflist}}

			==External links==
			* http://www.ux.uis.no/~s-skj/ResTek1-v03/Notater/Tamu.Lecture.Notes/Capillary.Pressure/Lecture_16.ppt

			[[Category:Petroleum engineering]]


			{{fluiddynamics-stub}}

en>Twhitguy14 at 02:03, 1 September 2012

2012-09-01T02:03:32Z

New page

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