Difference between revisions of "Dictionary:Annulus"

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{{#category_index:A|annulus}}
 
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[[File:Segi6.jpg|thumb|FIG. I-6. <b>Invaded zone</b>. (Courtesy Schlumberger.)]]
 
 
(an&#x2019; y&#x2202; l&#x2202;s)  
 
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<b>4</b>. A low-resistance ring about a borehole sometimes produced by invasion of mud filtrate into hydrocarbon-bearing beds. Because of their greater mobility, hydrocarbons may be displaced farther beyond the invaded zone than conductive formation water. See Figure [[Special:MyLanguage/Dictionary:Fig_I-6|I-6]].
 
<b>4</b>. A low-resistance ring about a borehole sometimes produced by invasion of mud filtrate into hydrocarbon-bearing beds. Because of their greater mobility, hydrocarbons may be displaced farther beyond the invaded zone than conductive formation water. See Figure [[Special:MyLanguage/Dictionary:Fig_I-6|I-6]].
  
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[[File:Segi6.jpg|thumb| center|450px|FIG. I-6. <b>Invaded zone</b>. (Courtesy Schlumberger.)]]
  
 
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Latest revision as of 17:50, 4 January 2020

Other languages:
العربية • ‎English • ‎español


(an’ y∂ l∂s)

1. The space between two concentric cylindrical objects.

2. The space between a drill-pipe and the borehole wall through which the returning drilling fluid (mud) returns to the surface.

3. The space between tubing and casing or between casing and formation.

4. A low-resistance ring about a borehole sometimes produced by invasion of mud filtrate into hydrocarbon-bearing beds. Because of their greater mobility, hydrocarbons may be displaced farther beyond the invaded zone than conductive formation water. See Figure I-6.

FIG. I-6. Invaded zone. (Courtesy Schlumberger.)

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Annulus
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