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V� <br /> DRILLING PROGNOSIS <br /> QUINTANA PETROLEUM CORPORATION <br /> Piacentine #1-27 <br /> Rio Blanco Prospect <br /> San Joaquin County, California <br /> LOCATION: 990 ' E & 3490 ' N of SW corner of <br /> projected Section 27 , T3N-R5E <br /> San Joaquin County, California <br /> PROPOSED TOTAL DEPTH: 4900 ' <br /> ESTIMATED Deadhorse Sand 3590 ' <br /> FORMATION TOPS: Domengine 3800 ' <br /> Capay 4590 ' <br /> Mokelumne 4685 ' <br /> CONTRACTOR: Not selected at this time. <br /> MUD PROGRAM: Vendor not selected at this time. <br /> PROPOSED PROGRAM: Depth: 0 ' -600 ' 600 ' -2500 ' 2500 ' -TD <br /> Mud Type: Spud mud Gel/Lime LSND <br /> Mud Weight: 8 . 8-9 . 0 8 . 8-9 . 3 8 . 8-9 . 8 <br /> Viscosity: 30-40 sec 30-40 sec 35-45 sec <br /> Fluid Loss : NC NC 6-10 cc <br /> CONDUCTOR CASING: 16" , set at +/-401 . <br /> SURFACE CASING: 8 5/8" 24# K-55 ST&C set at +/-6001 . <br /> CEMENT PROGRAM: Surface Cement: 220 sx class G cement with <br /> 8% gel and 3% CaC12 followed by 150 sx <br /> class G with 3% CaC12 . If cement does not <br /> circulate to surface use 1" to top out. <br /> Float Equipment: Guide shoe, insert float, <br /> four centralizers and a limit clamp. Run <br /> centralizers 10 ' above shoe, insert collar, <br /> and next two collars above insert float. <br /> Production Casing Cement: Volumes and <br /> slurry designs will be provided after in- <br /> spection of open hole logs. <br />