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5.3.1.1 VVT Station <br />A VVT station, to be installed by Shell, will be placed inside the permit boundary, within the game <br />fence. The substation will power all electric needs from the VVT. The majority of surface equipment <br />will be used in all phases — heating and cooling — with minor variations in the equipment line -up. <br />A buried power cable from the substation will feed the VVT; other electrical service lines will be <br />placed above ground on cable trays. Each pipe rack foundation will rest on a concrete footer. <br />5.3.2 Surface Equipment Summary - Heating Phase <br />During the heating phase, equipment discussed in Section 6B.3.2 will be utilized in addition to the <br />equipment discussed in this section. <br />5.3.2.1 Electric Heaters <br />Three horizontal, down -hole heaters will be installed to heat the kerogen within the oil shale rock. <br />The heater performance and the reservoir response will be monitored using the installed <br />instrumentation connected to the East RDD control system. Heaters will be positioned far enough <br />apart such that conversion of kerogen into oil and gas will be minimal. Converted oil and gas will be <br />managed by the observer /producer well. Heater power and control will be supplied from the EIB, <br />which in turn, receives power from the high voltage substation via VVT. <br />5.3.3 Surface Equipment Summary - Reclamation Phase <br />Equipment discussed in Section 6B.3.3 will also be used during the reclamation phase of the ELHT. <br />No new equipment will be installed. <br />5.4 Well Construction <br />5.4.1 General <br />The ELHT Pilot utilizes two types of wells (Figures 7 and 8): <br />• Horizontal heater wells (3) <br />• Inclined observer / producer well (1). <br />The ELHT Pilot will not include additional drilling of down gradient ground water monitoring wells. <br />Monitoring will be provided by the existing wells drilled between 2009 -2010 in Pad 138 -5 -298 which <br />include one well each in each hydrostratigraphic unit (Uinta, L7, L6, L5, and L4). <br />Specifications for each well type are discussed in the sections following. Error! Reference source <br />not found. lists the specifications for each well. Specifications listed are intended generally to <br />provide for cement mixes to withstand both the composition (high salinity) and /or sulfate content <br />of the wells plus the temperature fluctuations that will act on the casings and cement. Dimensions <br />provided are for maximum pipe (casing) and drilled well dimensions, and may be decreased if <br />feasible. Annular spaces may vary depending on the final borehole and casing size selection, but will <br />be maintained to provide sufficient space for placement of cement. <br />7 <br />