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</html><thumbnail_url>https://libertyenergy.com/wp-content/uploads/2020/12/LBRT-resource-thumbnails-13-1.png</thumbnail_url><thumbnail_width>1080</thumbnail_width><thumbnail_height>1080</thumbnail_height><description>[vc_row][vc_column][vc_column_text]Hydraulic Fracturing has been around since 1947 &#x2013; and a lot has changed since then. Dr. Ouigee (Leen Weijers) breaks down the evolution of shale wells, covering the transition of technology and progress made in horizontal fracturing in five easy pieces. Download PDF[/vc_column_text][vc_video link=&#x201D;https://www.youtube.com/watch?v=eeFXd7UaotI&#x201D;][/vc_column][/vc_row]</description></oembed>
