Calculate the following ratios for years 2017

The reserve replacement ratio

The reserve life ratio

The finding cost ratio

The lifting cost ratio

DD&A per BOE

Value of proved reserve additions per BOE

Value Added Ratio

All calculations need to be shown

• Full-year 2017 production of 22.9 MBOE/d
• Year-end proved reserves of 137.0 MMBOE
• Organic reserve replacement⁽ⁱ⁾ of 566% of 2017
• Reduced lease operating expense to $4.84 per BOE in the fourth quarter of 2017
• Generated a fourth quarter operating margin of $40.51 per BOE

• Proved developed and undeveloped reserves	Oil (MBbls)			Natural Gas (MMcf)			Total (MBOE)
  As of December 31, 2016	71,145			122,611			91,580
  Revisions to previous estimates	(5,171)			6,336			(4,115)
  Extensions and discoveries	39,267			48,648			47,375
  Purchases, net of sales, of reserves in place	8,388			12,711			10,507
  Production	(6,557)			(10,896)			(8,373)
  As of December 31, 2017	107,072			179,410			136,974

• Net production	2017
  Oil (MBbls)	1,936
  Natural gas (MMcf)	3,018
  Total (MBOE)	2,439
  Average daily production (BOE/d)	26,511
  % oil (BOE basis)	79		%
  Oil and natural gas revenues (in thousands)
  Oil revenue	$	104,132
  Natural gas revenue	14,081
  Total	118,213
  Impact of cash-settled derivatives	(4,501)
  Adjusted Total Revenue (i)	$	113,712
  Average realized sales price (excluding impact of cash settled derivatives)
  Oil (Bbl)	$	53.79
  Natural gas (Mcf)	4.67
  Total (BOE)	48.47
  Average realized sales price (including impact of cash settled derivatives)
  Oil (Bbl)	$	51.28
  Natural gas (Mcf)	4.78
  Total (BOE)	46.62
  Additional per BOE data
  Sales price (a)	$	48.47
  Lease operating expense (b)	4.84
  Gathering and treating expense	0.57
  Production taxes	2.55
  Operating margin	$	40.51
  Depletion, depreciation and amortization	$	14.98
  Adjusted G&A (c)
  Cash component (d)	$	2.46
  Non-cash component	0.54