ARM 42.21.140. OIL DRILLING RIGS

(1) Bids for new rigs will be solicited from manufacturers of oil drilling rigs to determine current replacement costs based on the depth rating listed below. For each depth rating listed below for oil drilling rigs, there will be two replacement cost categories. One category will represent current replacement cost of a mechanical rig and the second category will represent current replacement cost of an electric rig. Each rig as it is assessed will be placed in a value category based on its depth. (2) The department shall prepare a ten-year trended depreciation schedule for oil drilling rigs. The trended depreciation schedule shall be derived from depreciation factors published by Marshall and Swift Publication Company. The "% good" for all drill rigs less than one year old shall be 100%. The trended depreciation schedule for tax year 2008 is listed below. DRILL RIG TRENDED DEPRECIATION SCHEDULE YEAR NEW/ TREND TRENDED ACQUIRED % GOOD FACTOR % GOOD 2008 100% 1.000 100% 2007 92% 1.000 92% 2006 84% 1.053 88% 2005 76% 1.106 84% 2004 67% 1.200 80% 2003 58% 1.242 72% 2002 49% 1.267 62% 2001 35% 1.274 45% 2000 30% 1.286 39% 1999 24% 1.307 31% 1998 and older 20% 1.313 26% (3) In any year that the information required in (1) is not available for use by the department, oil drilling rigs shall be valued by using the previous year's schedule. (4) This rule is effective for tax years beginning after December 31, 2007. DEPTH CATEGORIES Class Depth Capacity 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to 3,000 ft. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,001 ft. to 5,000 ft. 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,001 ft. to 8,000 ft. 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,501 ft. to 10,000 ft. 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . 10,001 ft. to 12,500 ft. 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . 12,501 ft. to 15,000 ft. 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . 15,001 ft. to 20,000 ft. 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,001 ft. and over MANUFACTURER'S SERVICE WORKOVER DEPTH RATING RIG R.C.N RIG R.C.N 0 - 3,000 ft. $ $ 285,209 3,001 ft. - 5,000 ft. 432,135 5,001 ft. - 7,500 ft. 868,250 654,750 7,501 ft. - 10,000 ft. 1,167,210 998,750 10,001 ft. - 12,500 ft. 1,265,500 1,130,600 12,501 ft. - 15,000 ft. 1,720,400 1,538,500 15,001 ft. - 20,000 ft. 1,990,100 20,001 ft. and over 2,036,047 The depth capacity for drilling rigs will be based on the "Manufacturers Depth Rating." These replacement costs will then be depreciated to arrive at market value according to the schedule mentioned in (2).