| Description | English: This is a diagram of a pump jack with inserts of the downhole pump and a section of the bore hole (showing the casing, tubing, annulus and sucker rods). I made it using Inkscape. |
| Date | 7/26/08 |
| Source | http://commons.wikimedia.org/ |
| Author | TastyCakes |
| Permission | Creative Commons Attribution 3.0 Unported license. |
| Licensing | This file is made available under the Creative Commons Creative Commons Attribution 3.0 Unported. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). |
From Wikimedia Commons http://commons.wikimedia.org/
