2012-12-12_REVISION - P2010026 (3)

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late summer 2013. From an operational perspective, the East RDD Pilot and the ELHT will be combined into a single operation. To gain maximum R&D learnings, a —2 year extension may be requested to study the longer term heater performance in the resource. 5.5.1.1 Construction Phase Pad construction of the ELHT will begin in late spring 2013 and is expected to be completed within 45 days. Drilling of the four wells at ELHT is expected to begin in late summer 2013 and is expected to require less than 120 days. Heater installation will follow and is expected to take less than 60 days. Construction of the ELHT is minimal as it will tie into the facilities constructed for East RDD Pilot. The tie -ins for ELHT to the East RDD Pilot are expected to take less than 90 days. There may be time intervals of as much as 120 days between some of these activities and some activities may overlap. Heating is expected to begin at ELHT in early 2014. 5.5.1.2 Heating Phase Heating of the three wells is expected to require —2 years to gain the required information to evaluate the test. The primary purpose of the heating is to measure the response of the reservoir to heating (principally looking for the development of heater "hot spots "). Other important geomechanical and reservoir learnings are expected within the 2 -year heating period. An additional 2 -year heating period may be requested to study the longer term heater performance in the resource. 5.5.1.3 Cooling Phase Upon completion of the heating phase, the pyrolyzed zone will be allowed to cool naturally. It is expected that natural cooling will be sufficient for the ELHT because of the relatively small volume of rock being heated. The wells will not be abandoned until the temperature at the heaters is below 200 °F. 5.5.1.4 Coring Phase Upon completion of the cooling phase, Shell will drill a core in the heat affected zone near heater one to assess recovery of sodium minerals as described in section 6B.2.2. 5.5.2 Development Methods Shell has selected three specific intervals to be heated based on the geological features of each interval. Isolation between individual heated intervals and the water - bearing zones above the crown is ensured in the selection of the heated intervals and the modeling and geomechanical analysis. In selecting the intervals to be heated, the following criteria were considered: 1. Expected operating conditions (pressure and temperature) 2. Crown thickness and composition 3. Fracture generation potential during heating 12