Workover Activities (2003 – 2016*) Statewide: Conventional Oil and Gas Only** Background: West Coast Monthly Average Spot Price for Alaska North Slope Crude Oil (Dollars per Barrel) 2100 $150 SB 21 Enacted Number of Workover Activities 1800 PPT Enacted ACES Enacted $120 1500 Workover Activity Other 1200 $90 Repairs Enhancements 900 $60 600 $30 300 $0 0 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Total Activities since 2003 = 16,787 **Does not include coal- or shale-bed natural gas, or gas hydrate wells AOGCC * Preliminary Count, March 10, 2017 Workover Activity by Type (2003 – 2016*) Alaska Wells: Production Enhancements Background: West Coast Monthly Average Spot Price for Alaska North Slope Crude Oil (Dollars per Barrel) $150 SB 21 Enacted 700 PPT Enacted Number of Workover Activities 600 ACES Enacted $120 500 $90 400 $60 300 200 $30 100 $0 0 2003 2004 Perforate 2005 2006 Stimulate 2007 2008 2009 Isolation / Flow Mgmt 2010 2011 2012 Convert Inj / Prod 2013 2014 2015 2016 Re-enter Suspended Well Total Production Enhancement Activities Since 2003 = 5,548 AOGCC **Does not include coal- or shale-bed natural gas, or gas hydrate wells * Preliminary Count, March 10, 2017 Workover Activity by Type (2003 – 2016*) Alaska Wells: Maintenance Background: West Coast Monthly Average Spot Price for Alaska North Slope Crude Oil (Dollars per Barrel) 1500 SB 21 Enacted 1200 Number of Workover Activities $150 $120 ACES Enacted PPT Enacted 900 $90 600 $60 300 $30 0 $0 2003 2004 2005 2006 2007 Repair Csg / Tbg / Well 2008 2009 2010 Pump Maint / Repl 2011 2012 2013 Scale / Corrosion 2014 2015 2016 Freeze Protect Total Maintenance Activities Since 2003 = 8,772 AOGCC **Does not include coal- or shale-bed natural gas, or gas hydrate wells * Preliminary Count, March 10, 2017 Workover Activities (2003 – 2016*) Statewide: Conventional Oil and Gas Only** Operation Type Enhancement Maintenance Other Grand Total 2003 321 273 94 688 2004 367 236 118 721 2005 405 321 95 821 2006 310 530 109 949 2007 241 663 102 1,006 2008 348 906 117 1,371 2009 366 1237 139 1,742 2010 360 882 184 1,426 2011 345 804 168 1,317 2012 387 382 231 1,000 2013 468 569 259 1,296 2014 588 653 363 1,604 2015 546 748 264 1,558 2016 Grand Total 496 5548 568 8772 224 2467 1,288 16,787 Total Activities since 2003 = 16,787 **Does not include coal- or shale-bed natural gas, or gas hydrate wells AOGCC * Preliminary Count, March 10, 2017 Workover Operations Class and Category Table Definition AOGCC Class Category Acid Treatment Stimulate Enhancement Annulus Corrosion Inhibitor Scale / Corrosion Maintenance Capillary String Stimulate Enhancement Cement Squeeze Isolation / Flow Mgm Enhancement Cement Squeeze Isolation / Flow Mgm Enhancement Cement Squeeze Isolation / Flow Mgm Enhancement Control Flow Mgt Zone Isolation / Flow Mgm Enhancement Convert to Injection Convert Inj / Prod Enhancement Convert to Producer Convert Inj / Prod Enhancement ESP Maintenance or Replacement Pump Maint / Repl Maintenance Freeze Protect Well Freeze Protect Maintenance Gravel Pack Maintenance Stimulate Enhancement Isolation Sleeve Isolation / Flow Mgm Enhancement Jet Pump Maint or Replacement Pump Maint / Repl K Valve Maintenance Repair Csg / Tbg / We Maintenance Kill String Maintenance Repair Csg / Tbg / We Maintenance Outer Annulus Cement Maint Repair Csg / Tbg / We Maintenance Maintenance Packer Maintenance Repair Csg / Tbg / We Maintenance Perforate New Pool Perforate Enhancement Perforated Perforate Enhancement Plug Milling Operations Other Enhancement Plug Perforations Isolation / Flow Mgm Enhancement Re-enter Op Shutdown Well Re-enter Op Shutdow Enhancement Re-enter Suspended Well Re-enter Suspended WEnhancement Repair / Replace Casing Repair Csg / Tbg / We Maintenance Repair / Replace Tubing Repair Csg / Tbg / We Maintenance Repair Well Repair Csg / Tbg / We Maintenance Replace Tubing Repair Csg / Tbg / We Maintenance Rod Pump Maint or Replacement Repair Csg / Tbg / We Maintenance Scale Inhibitor Squeeze Scale / Corrosion Maintenance Scale Removal Scale / Corrosion Maintenance Stimulate Stimulate Enhancement Tubing Patch Repair Csg / Tbg / We Maintenance Velocity String Stimulate Enhancement Water Wash Stimulate Enhancement Well Fractured Stimulate Enhancement Source: AOGCC RBDMS Database March 10, 2017 Operations Included in “Other” Class and Category Definition AOGCC Class Category Abandon Other Other Annular Disposal Other Other Change Approved Program Other Other Change Completion Type Other Other Change Method Operation Other Other Modify Well Marker Other Other Operational Shutdown Other Surface Plug Suspend Temperature Survey Well Secure or Plug Set Well Testing Completed Other Other Other Other Other Other Other Other Other Other Other Other Other Other Source: AOGCC RBDMS Database March 10, 2017 West Coast Monthly Average Spot Price for Alaskan North Slope Crude Oil (Dollars per Barrel) YEAR 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 Jan $14.23 $15.11 $20.00 $20.57 $14.92 $15.62 $11.66 $16.16 $17.23 $23.57 $14.79 $10.69 $25.74 $24.37 $17.52 $31.91 $33.10 $41.12 $62.85 $51.52 $91.16 $39.01 $79.34 $92.56 $111.87 $109.88 $103.82 $48.87 $30.22 Feb $14.03 $15.99 $19.30 $15.74 $15.30 $16.78 $12.59 $17.14 $17.78 $21.03 $13.39 $10.43 $27.65 $26.02 $19.14 $35.20 $33.66 $43.59 $59.26 $57.00 $94.42 $42.78 $76.74 $96.79 $119.65 $112.76 $106.30 $53.85 $31.14 Mar $13.79 $17.25 $17.91 $17.02 $15.50 $17.35 $12.91 $17.31 $20.40 $20.07 $12.25 $13.07 $28.01 $24.70 $22.76 $32.59 $35.50 $50.63 $60.61 $59.01 $105.06 $47.75 $79.45 $115.34 $122.68 $108.93 $107.91 $52.28 $38.10 Apr $15.29 $19.37 $14.82 $17.56 $16.96 $18.17 $14.96 $18.36 $22.04 $18.54 $12.41 $15.64 $23.83 $25.55 $24.99 $25.59 $35.43 $49.75 $67.74 $63.92 $112.37 $46.56 $82.23 $120.86 $120.95 $104.58 $107.36 $58.49 $41.79 May $14.86 $17.64 $14.38 $16.67 $18.03 $17.47 $16.47 $18.43 $19.65 $19.41 $12.31 $15.86 $27.15 $26.70 $25.87 $26.19 $39.07 $46.77 $69.32 $64.76 $125.41 $58.23 $74.23 $113.57 $110.55 $104.42 $108.06 $64.37 $46.61 Jun $14.14 $17.00 $13.20 $16.36 $20.20 $16.02 $16.43 $17.43 $18.98 $17.30 $11.62 $15.82 $29.62 $25.82 $24.16 $29.35 $36.73 $53.67 $69.50 $69.11 $133.78 $69.80 $75.66 $111.08 $98.06 $104.01 $110.76 $64.40 $47.40 Jul $13.70 $16.78 $15.55 $17.25 $19.40 $14.84 $16.52 $16.23 $19.79 $17.48 $12.92 $18.16 $27.63 $24.60 $25.82 $29.17 $39.44 $56.67 $73.10 $75.93 $132.87 $64.53 $76.53 $114.47 $103.75 $111.34 $107.63 $56.20 $44.07 Aug $13.63 $16.04 $25.99 $17.18 $17.97 $15.42 $16.66 $16.72 $19.90 $17.98 $12.49 $20.08 $29.40 $24.12 $27.39 $30.22 $43.12 $62.40 $71.74 $73.83 $115.98 $71.52 $75.78 $106.95 $110.79 $110.57 $101.78 $48.26 $44.17 Sep Oct Nov Dec $12.58 $11.34 $11.36 $13.23 $16.62 $17.27 $17.49 $19.07 $32.16 $31.53 $28.79 $24.02 $17.37 $18.47 $17.57 $14.83 $18.46 $18.71 $17.46 $16.33 $14.98 $15.39 $13.07 $10.29 $16.11 $16.02 $16.71 $15.38 $16.65 $15.96 $15.88 $16.94 $21.69 $22.60 $21.50 $23.66 $18.09 $19.59 $18.33 $16.39 $14.13 $13.38 $11.47 $9.39 $22.96 $21.83 $23.65 $24.54 $32.25 $31.56 $32.74 $23.72 $23.21 $19.45 $17.23 $16.69 $28.76 $27.53 $24.69 $28.03 $27.09 $28.55 $29.11 $30.67 $42.71 $48.56 $42.15 $36.66 $63.47 $60.37 $56.11 $57.17 $62.33 $54.27 $54.26 $58.13 $79.72 $84.77 $92.98 $88.64 $101.86 $73.65 $53.94 $37.70 $69.20 $74.28 $76.52 $75.12 $75.27 $82.41 $83.93 $89.75 $113.74 $110.84 $115.58 $106.55 $111.94 $107.30 $105.24 $107.31 $110.48 $104.82 $101.28 $108.19 $96.05 $84.91 $77.41 $60.90 $48.83 $48.20 $44.24 $37.15 $44.51 $49.39 $45.76 $53.26 Source: Alaska Department of Revenue, Tax Division, 2017, ANS West Coast Average Spot Price (for the period from 1988 through 2016), available online at: http://www.tax.alaska.gov/programs/oil/prevailing/ans.aspx. 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