1. Copyright of Shell, Exploration and ProductionRestricted The Arrowhead Project – protecting the water Bruce T. Mitchell

2. 2October 2010 Trap? Buried Hills HC saturation interval is typically just below the unconformity, and is 100’- 150’ thick Drilling and Development Plans, per site Arbuckle Formation Mississippian Unconformity Saltwater Disposal well, 2 laterals Tank Battery, separators 4500’ – 5000’ Cherty Dolomite Cherty Limestone Spiculite Shale Shale SR Tripolitic Chert HC Saturation Mississippian Uncf Legend Pennsylvanian shales and limestones Pennsylvanian shales and sandstones

3. Typical Well Design 3 The Process 1/5/2016

4. Copyright of ShellCONFIDENTIAL January 5, 2016 4 Keeping away from the water Top Hutchinson Salt Base Salt Cherokee Shale Mississippi Lime Uncf 950’ 1500’ 4550’ 4700’ Oil and Gas Fresh water Arbuckle Fm 5450’ Dolomite Limestone, Chert Shale Limestone, Dolomite Sandstone Shale Salt Limestone, shale Sandstone Shale

5. CONFIDENTIAL