Patent ID: 8567747
Filing Date: 2013-10-29
Classification: E21B

Abstract:
1. A portable, composite drilling pad comprising: a) a base layer formed of a steel plate about ten feet long by about eight feet wide and having a thickness of approximately ⅛ of an inch; b) a second layer on top of said base layer, said second layer formed of two four by ten foot sheets of sheet rock; c) a third layer on top of said second layer, said third layer formed of expanded metal having perforations therein; d) a steel spine plate centrally located on top of said third layer, said steel spine plate having a thickness of about ¼ inch and a with of approximately three inches and extending substantially the length of the third layer; e) a plurality of spaced apart retaining plates extending across said steel spine plate, each of said plurality of retaining plates being secured in place by a plurality of bolts extending through each of said retaining plates and through the third layer and the second layer and the base layer; and, a polymer emulsion layer formed of polymer resin and cement is located over said expanded metal layer and forms a durable flexible coating that can flex without cracking.