March 1998
Industry At A Glance
98-03_lift-pt1-lea_fig3.html (Mar-1998)
A monthly magazine offering industry news, statistics and technical editorial to the oil and gas drilling, exploration and production industry.
Fig. 3. Sand washing device installed at top and bottom of sucker rod pump plunger automatically flushes sand and debris from plunger-barrel contact points on upstroke and downstroke. |
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Copyright © 1999 Gulf Publishing Company