| 452496 | Sep 20, 1996 | Sep 20, 1996 | R. K. G. Engineering, Inc. | Crane | Beavers, A.O. "A" #4 | 6,661 | 10330879 |
| 432947 | Feb 27, 1995 | Feb 27, 1995 | R. K. G. Engineering, Inc. | Crane | University "E" #7 | 4,000 | 10334311 |
| 432947Amendment | Feb 27, 1995 | Feb 27, 1995 | R. K. G. Engineering, Inc. | Crane | University "E" #7 | 3,900 | 10334311 |
| 421714 | Mar 30, 1994 | Mar 30, 1994 | R. K. G. Engineering, Inc. | Crane | Ogilvy #3 | 3,530 | 10330789 |
| 421713 | Mar 30, 1994 | Mar 30, 1994 | R. K. G. Engineering, Inc. | Crane | Ogilvy #2 | 3,670 | 10330011 |
| 412710 | Jun 23, 1993 | Jun 23, 1993 | R. K. G. Engineering, Inc. | Ector | Kloh, A., et al "G" NCT-B #11 | 4,200 | 13536736 |
| 380611 | Nov 8, 1990 | Nov 8, 1990 | R. K. G. Engineering, Inc. | Crane | Beavers, A. O. "A" #4 | 6,661 | 10330879 |
| 379312 | Oct 17, 1990 | Oct 17, 1990 | R. K. G. Engineering, Inc. | Ector | Cowden, E. F. "A-B" #5G | 5,700 | 13531149 |
| 373891 | Jun 4, 1990 | Jun 4, 1990 | R. K. G. Engineering, Inc. | Ector | Kloh, A. et al "G" NCT-B #4 | 4,100 | 13508566 |
| 370413 | Mar 2, 1990 | Mar 2, 1990 | R. K. G. Engineering, Inc. | Ector | Kloh, A., et al "G" NCT-B #9 | 4,200 | 13536205 |
| 370412 | Mar 2, 1990 | Mar 2, 1990 | R. K. G. Engineering, Inc. | Ector | Kloh, A., et al "G" NCT-B #10 | 4,200 | 13536206 |
| 337760 | Oct 22, 1987 | Oct 22, 1987 | R. K. G. Engineering, Inc. | Howard | Shafer #1X | 7,600 | 22734222 |
| 334525 | Aug 19, 1987 | Aug 19, 1987 | R. K. G. Engineering, Inc. | Howard | Shafer #1 | 7,600 | 22733109 |
| 334525Amendment | Aug 19, 1987 | Aug 19, 1987 | R. K. G. Engineering, Inc. | Howard | Shafer #1 | 7,600 | 22733109 |
| 333887 | Aug 6, 1987 | Aug 6, 1987 | R. K. G. Engineering, Inc. | Crane | Hamon 29 #1 | 6,661 | 10330879 |
| 321500 | Oct 8, 1986 | Oct 8, 1986 | R. K. G. Engineering, Inc. | Upton | Taubman #1 | 3,500 | 46132599 |
| 287341 | Oct 15, 1985 | Oct 15, 1985 | R. K. G. Engineering, Inc. | Pecos | Quasar 64 A #1 | 2,342 | 37134153 |
| 280583 | Jul 19, 1985 | Jul 19, 1985 | R. K. G. Engineering, Inc. | Pecos | El Wedo "A" #6 | 5,849 | 37135563 |
| 279836 | Jul 10, 1985 | Jul 10, 1985 | R. K. G. Engineering, Inc. | Pecos | El Wedo #4 | 5,500 | 37135558 |
| 275973 | May 24, 1985 | May 24, 1985 | R. K. G. Engineering, Inc. | Pecos | El Wedo #3 | 5,500 | 37135539 |
| 271789 | Apr 9, 1985 | Apr 9, 1985 | R. K. G. Engineering, Inc. | Martin | Martin 10 #1 | 8,800 | 31733160 |
| 264559 | Jan 21, 1985 | Jan 21, 1985 | R. K. G. Engineering, Inc. | Garza | Beggs "55" #1 | 8,500 | 16932509 |
| 264560 | Jan 21, 1985 | Jan 21, 1985 | R. K. G. Engineering, Inc. | Borden | Lake THOMAS"80" #1 | 7,000 | 03331124 |
| 261162 | Dec 13, 1984 | Dec 13, 1984 | R. K. G. Engineering, Inc. | Borden | Good #1 | 8,100 | 03331112 |
| 254812 | Oct 18, 1984 | Oct 18, 1984 | R. K. G. Engineering, Inc. | Pecos | Tippett-Lynch #1 | 6,900 | 37134916 |
| 237358 | May 2, 1984 | May 2, 1984 | R. K. G. Engineering, Inc. | Upton | King Ranch Oil & Lignite Co. #3 | 3,100 | 46132182 |
| 236962 | Apr 27, 1984 | Apr 27, 1984 | R. K. G. Engineering, Inc. | Pecos | Tippett-Lynch #1 | 6,900 | 37134916 |
| 232470 | Mar 15, 1984 | Mar 15, 1984 | R. K. G. Engineering, Inc. | Pecos | El Wedo A #4 | 5,500 | 37134779 |
| 232166 | Mar 12, 1984 | Mar 12, 1984 | R. K. G. Engineering, Inc. | Pecos | Quasar 64 #1 | 6,675 | 37134596 |
| 231956 | Mar 9, 1984 | Mar 9, 1984 | R. K. G. Engineering, Inc. | Pecos | El Wedo A #5 | 5,500 | 37134778 |
| 230151 | Feb 23, 1984 | Feb 23, 1984 | R. K. G. Engineering, Inc. | Pecos | Quasar 63 #1 | 8,400 | 37134769 |
| 227693 | Jan 27, 1984 | Jan 27, 1984 | R. K. G. Engineering, Inc. | Glasscock | Ballenger Ranch 35 #1 | 10,500 | 17331547 |
| 226727 | Jan 13, 1984 | Jan 13, 1984 | R. K. G. Engineering, Inc. | Pecos | Quasar 64-A #1 | 8,500 | 37134153 |
| 222575 | Dec 6, 1983 | Dec 6, 1983 | R. K. G. Engineering, Inc. | Glasscock | Books #2 | 10,700 | 17331518 |
| 218800 | Oct 27, 1983 | Oct 27, 1983 | R. K. G. Engineering, Inc. | Pecos | Quasar 64 #1 | 8,500 | 37134596 |
| 217348 | Oct 17, 1983 | Oct 17, 1983 | R. K. G. Engineering, Inc. | Pecos | El Wedo A #3 | 5,500 | 37134587 |
| 215130 | Sep 27, 1983 | Sep 27, 1983 | R. K. G. Engineering, Inc. | Pecos | Crawford 21 #3 | 3,100 | 37134569 |
| 214249 | Sep 22, 1983 | Sep 22, 1983 | R. K. G. Engineering, Inc. | Pecos | Woodward, Emma Gay #3 | 5,600 | 37134565 |
| 214016 | Sep 21, 1983 | Sep 21, 1983 | R. K. G. Engineering, Inc. | Pecos | Crawford 21 #3 | 3,100 | 37134564 |
| 212323 | Sep 14, 1983 | Sep 14, 1983 | R. K. G. Engineering, Inc. | Pecos | Price 20 #4 | 3,100 | 37134556 |
| 211416 | Sep 13, 1983 | Sep 13, 1983 | R. K. G. Engineering, Inc. | Glasscock | Craig Ltd #1 | 10,700 | 17331470 |
| 212005 | Sep 8, 1983 | Sep 8, 1983 | R. K. G. Engineering, Inc. | Pecos | Price 20 #3 | 3,100 | 37134555 |
| 206024 | Aug 17, 1983 | Aug 17, 1983 | R. K. G. Engineering, Inc. | Pecos | Crawford 21 #1 | 3,100 | 37134521 |
| 205034 | Aug 10, 1983 | Aug 10, 1983 | R. K. G. Engineering, Inc. | Pecos | Price 20 #1 | 3,100 | 37134512 |
| 205032 | Aug 10, 1983 | Aug 10, 1983 | R. K. G. Engineering, Inc. | Pecos | Price 20 #2 | 3,100 | 37134511 |
| 203144 | Jul 27, 1983 | Jul 27, 1983 | R. K. G. Engineering, Inc. | Crane | Sanger 24 #1 | 5,578 | 10333232 |
| 195222 | May 17, 1983 | May 17, 1983 | R. K. G. Engineering, Inc. | Glasscock | Books #1 | 10,500 | 17331047 |
| 187843 | Mar 9, 1983 | Mar 9, 1983 | R. K. G. Engineering, Inc. | Pecos | Tamarack "28" #1 | 3,000 | 37134240 |
| 187978 | Mar 8, 1983 | Mar 8, 1983 | R. K. G. Engineering, Inc. | Pecos | Getty '33' #1 | 2,900 | 37134245 |
| 187208 | Mar 1, 1983 | Mar 1, 1983 | R. K. G. Engineering, Inc. | Pecos | Gulf '17' #2 | 3,000 | 37134228 |
| 185979 | Feb 14, 1983 | Feb 14, 1983 | R. K. G. Engineering, Inc. | Pecos | Gulf '16' #1 | 3,000 | 37134208 |
| 184930 | Feb 1, 1983 | Feb 1, 1983 | R. K. G. Engineering, Inc. | Pecos | Gulf "17" #1 | 3,000 | 37134178 |
| 183521 | Jan 6, 1983 | Jan 6, 1983 | R. K. G. Engineering, Inc. | Crane | Hobbs '16' #1 | 5,150 | 10383008 |
| 179849 | Dec 13, 1982 | Dec 13, 1982 | R. K. G. Engineering, Inc. | Pecos | TXO-21 #1 | 6,000 | 37134211 |
| 175959 | Oct 25, 1982 | Oct 25, 1982 | R. K. G. Engineering, Inc. | Pecos | T.X.O. "26" #1 | 5,800 | 37134085 |
| 174891 | Oct 19, 1982 | Oct 19, 1982 | R. K. G. Engineering, Inc. | Pecos | Pearson #2 | 3,600 | 37134060 |
| 174801 | Oct 19, 1982 | Oct 19, 1982 | R. K. G. Engineering, Inc. | Pecos | Gulf "48" #2 | 3,600 | 37134057 |
| 174634 | Oct 18, 1982 | Oct 18, 1982 | R. K. G. Engineering, Inc. | Pecos | H. R. H. 25 #1 | 5,900 | 37134049 |
| 175164 | Oct 15, 1982 | Oct 15, 1982 | R. K. G. Engineering, Inc. | Pecos | Pearson #1 | 3,600 | 37134064 |
| 173459 | Oct 4, 1982 | Oct 4, 1982 | R. K. G. Engineering, Inc. | Pecos | Gulf 48 #1 | 3,600 | 37134035 |
| 167658 | Jul 29, 1982 | Jul 29, 1982 | R. K. G. Engineering, Inc. | Pecos | Iowa Realty Trust 'B' #1 | 5,925 | 37133973 |
| 166897 | Jul 22, 1982 | Jul 22, 1982 | R. K. G. Engineering, Inc. | Pecos | Vaughn, Dorothy #1 | 5,835 | 37133970 |
| 166181 | Jul 14, 1982 | Jul 14, 1982 | R. K. G. Engineering, Inc. | Pecos | Iowa Realty Trust 23 #1 | 5,800 | 37133964 |
| 165756 | Jul 7, 1982 | Jul 7, 1982 | R. K. G. Engineering, Inc. | Andrews | Craddock, H. J. #1 | 5,000 | 00333265 |
| 164082 | Jun 18, 1982 | Jun 18, 1982 | R. K. G. Engineering, Inc. | Andrews | Craddock, H. J. #2 | 5,000 | 00333261 |
| 163415 | Jun 11, 1982 | Jun 11, 1982 | R. K. G. Engineering, Inc. | Crane | Carter, W. G. #1 | 5,530 | 10332937 |
| 156370 | Apr 12, 1982 | Apr 12, 1982 | R. K. G. Engineering, Inc. | Pecos | Iowa Realty Trust A #1 | 6,000 | 37133836 |
| 156178 | Apr 8, 1982 | Apr 8, 1982 | R. K. G. Engineering, Inc. | Pecos | Reed, Sadiec. #1 | 7,410 | 37133831 |
| 154518 | Mar 25, 1982 | Mar 25, 1982 | R. K. G. Engineering, Inc. | Crane | Arco 22 #1 | 3,500 | 10332868 |
| 144209 | Dec 14, 1981 | Dec 14, 1981 | R. K. G. Engineering, Inc. | Crockett | Meadows, C. W. #1 | 7,400 | 10533758 |
| 142944 | Dec 7, 1981 | Dec 7, 1981 | R. K. G. Engineering, Inc. | Pecos | Iowa Realty Trust #1 | 8,300 | 37133672 |
| 141655 | Nov 25, 1981 | Nov 25, 1981 | R. K. G. Engineering, Inc. | Pecos | Mobil-13 #2 | 6,000 | 37133657 |
| 140469 | Nov 12, 1981 | Nov 12, 1981 | R. K. G. Engineering, Inc. | Pecos | Woodward, Emma Gay #2 | 5,400 | 37133646 |
| 140466 | Nov 12, 1981 | Nov 12, 1981 | R. K. G. Engineering, Inc. | Pecos | McDonald 46 #6 | 4,500 | 37133645 |
| 137235 | Oct 20, 1981 | Oct 20, 1981 | R. K. G. Engineering, Inc. | Upton | King Ranch Oil & Lignite Co. #2 | 3,000 | 46131831 |
| 137231 | Oct 20, 1981 | Oct 20, 1981 | R. K. G. Engineering, Inc. | Upton | King Ranch Oil & Lignite Co. #1 | 3,000 | 46131830 |
| 87182 | Jul 21, 1980 | Jul 21, 1980 | R. K. G. Engineering, Inc. | Dimmit | Cotulla #46-6 | 6,000 | 12732062 |
| 87181 | Jul 21, 1980 | Jul 21, 1980 | R. K. G. Engineering, Inc. | Dimmit | Cotulla #579-7 | 6,000 | 12732061 |
| 87179 | Jul 21, 1980 | Jul 21, 1980 | R. K. G. Engineering, Inc. | Dimmit | Cotulla #578-8 | 6,000 | 12732060 |
| 85231 | Jun 26, 1980 | Jun 26, 1980 | R. K. G. Engineering, Inc. | Pecos | Mobil "13" #1 | 6,000 | 37133139 |
| 76541 | Mar 28, 1980 | Mar 28, 1980 | R. K. G. Engineering, Inc. | Irion | Chaney #1 | 4,000 | 23531537 |
| 75558 | Mar 18, 1980 | Mar 18, 1980 | R. K. G. Engineering, Inc. | Frio | Lehman-A #1 | 6,850 | 16331763 |
| 75557 | Mar 18, 1980 | Mar 18, 1980 | R. K. G. Engineering, Inc. | Frio | Lehman, M. W. #4 | 6,700 | 16331762 |
| 52626 | Jul 11, 1979 | Jul 11, 1979 | R. K. G. Engineering, Inc. | Dimmit | Cotulla #46-5 | 6,000 | 12731838 |
| 48306 | May 11, 1979 | May 11, 1979 | R. K. G. Engineering, Inc. | Dimmit | Cotulla, E. R. #5802 | 5,550 | 12731828 |
| 47729 | May 3, 1979 | May 3, 1979 | R. K. G. Engineering, Inc. | Crane | Beavers, A. O. #4 | 5,500 | 10311304 |
| 39182 | Dec 19, 1978 | Dec 19, 1978 | R. K. G. Engineering, Inc. | Dimmit | Cotulla #580-5 | 6,000 | 12731795 |
| 39181 | Dec 19, 1978 | Dec 19, 1978 | R. K. G. Engineering, Inc. | Dimmit | Cotulla #579-4 | 6,000 | 12731794 |
| 38303 | Dec 7, 1978 | Dec 7, 1978 | R. K. G. Engineering, Inc. | Webb | Cotulla #578-3 | 6,000 | 47932240 |
| 36773 | Nov 13, 1978 | Nov 13, 1978 | R. K. G. Engineering, Inc. | Zavala | Johnson #90-2 | 2,610 | 50780037 |
| 36372 | Nov 6, 1978 | Nov 6, 1978 | R. K. G. Engineering, Inc. | Zavala | Johnson "A" #34-1 | 2,940 | 50700498 |
| 36371 | Nov 6, 1978 | Nov 6, 1978 | R. K. G. Engineering, Inc. | Zavala | Johnson #64-1 | 2,600 | 50731043 |