Res /Prod ratio 30 yrs;

In the last presentation which I copied and pasted  a slide below.It states  production ratio of 30 years .
My question is
.......................do they think that they have 30 years worth
.......................and if so at what yearly rate? eg 30 into what.....=  what............
sorry if I've misreading this slide but does anyone have any ideas

cheers
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• Lease acreage, develop and drill vertical wells targeting the Mississippi Lime in Northern Oklahoma
• ~8,700 net acres in Kay County with solid infrastructure
  • ‒  Proximate nearest refinery
  • ‒  Good availability of grid power
• ~75% IRRs on wells at $85 oil. 65K BOE estimated recoverable reserves per well at current type curve

‒ ~$10 F&D costs and ~$5 LOE expenses per barrel

• Highly consistent formation to date
  • ‒  Only 1 of ~40 producing wells determined to be uneconomic
  • ‒  ~USD$200K of expense before dry hole determination
• 74% liquids by volume today (55% oil and 19% NGLs)
• $217M of 1P PV10 in 12/13 reserve report, 14mm BOE of proved
  reserves based on ~6,500 acres assessed in last reserve analysis
• Reserves/Production ratio of 30 years; production growth expected