Keywords: Annulus diagram for oil wells.jpg Diagram of Annulus Author Roy Lee own work freely licensed 2008-06-04 Mudgineer wikipedia en Mudgineer Original upload log en wikipedia Dharmadhyaksha CommonsHelper en wikipedia Annulus_diagram_for_oil_wells jpg 2008-06-04 03 23 Mudgineer 215×633× 52028 bytes <nowiki> diagram of an annulus I created this image entirely by myself 6/3/08 ~~~ </nowiki> 2008-06-04 02 23 Mudgineer 215×633× 50459 bytes <nowiki>Diagram of Annulus Author Roy Lee own work freely licensed </nowiki> Oil wells Terminology |