| 514434 | Oct 15, 2001 | Oct 15, 2001 | Western Chief Oil & Gas Company | Denton | Fen-Fen Unit #1 | 9,000 | 12131216 |
| 514404 | Oct 15, 2001 | Oct 15, 2001 | Western Chief Oil & Gas Company | Denton | Briscoe #6 | 8,700 | 12131220 |
| 514404Amendment | Oct 15, 2001 | Oct 15, 2001 | Western Chief Oil & Gas Company | Denton | Briscoe #6 | 8,700 | 12131220 |
| 512765 | Aug 22, 2001 | Aug 22, 2001 | Western Chief Oil & Gas Company | Denton | Poe-Mann #1 | 7,000 | 12131153 |
| 512765Amendment | Aug 22, 2001 | Aug 22, 2001 | Western Chief Oil & Gas Company | Denton | Poe-Mann #1 | 8,000 | 12131153 |
| 510404 | Jul 3, 2001 | Jul 3, 2001 | Western Chief Oil & Gas Company | Denton | Beckman Unit #1 | 9,000 | 12131076 |
| 510404Amendment | Jul 3, 2001 | Jul 3, 2001 | Western Chief Oil & Gas Company | Denton | Beckman Unit #1 | 9,000 | 12131076 |
| 510404Amendment | Jul 3, 2001 | Jul 3, 2001 | Western Chief Oil & Gas Company | Denton | Crown-Baldinger JV#4 #9 | 9,000 | 12131076 |
| 510812 | Jul 2, 2001 | Jul 2, 2001 | Western Chief Oil & Gas Company | Denton | Briscoe #5 | 8,700 | 12131083 |
| 510811 | Jul 2, 2001 | Jul 2, 2001 | Western Chief Oil & Gas Company | Denton | Briscoe #4 | 8,700 | 12131082 |
| 510405 | Jun 21, 2001 | Jun 21, 2001 | Western Chief Oil & Gas Company | Denton | Hickory Creek Estates Unit #2 | 9,000 | 12131047 |
| 510405Amendment | Jun 21, 2001 | Jun 21, 2001 | Western Chief Oil & Gas Company | Denton | Hickory Creek Estates Unit #3 | 9,000 | 12131047 |
| 510403 | Jun 21, 2001 | Jun 21, 2001 | Western Chief Oil & Gas Company | Denton | Hickory Creek Estates Unit #1 | 9,000 | 12131046 |
| 510403Amendment | Jun 21, 2001 | Jun 21, 2001 | Western Chief Oil & Gas Company | Denton | Hickory Creek Estates Unit #2 | 9,000 | 12131046 |
| 509881 | Jun 6, 2001 | Jun 6, 2001 | Western Chief Oil & Gas Company | Wise | Aasletten #1 | 8,990 | 49733103 |
| 508926 | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger-US Trust, NY Unit #2 | 9,100 | 12131010 |
| 508926Amendment | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger Unit #1 | 9,100 | 12131010 |
| 508925 | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger-US Trust, NY Unit #1 | 9,100 | 12131009 |
| 508925Amendment | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger-Unit #4 | 9,100 | 12131009 |
| 508924 | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger #2 | 9,100 | 12131008 |
| 508924Amendment | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger #2 | 9,100 | 12131008 |
| 508923 | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger #1 | 9,100 | 12131007 |
| 508923Amendment | May 14, 2001 | May 14, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger #5 | 9,100 | 12131007 |
| 508286 | Apr 27, 2001 | Apr 27, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger-Medelberg Unit #1 | 9,100 | 12130997 |
| 508286Amendment | Apr 27, 2001 | Apr 27, 2001 | Western Chief Oil & Gas Company | Denton | Baldinger-Medelberg Unit #1A | 9,100 | 12130997 |
| 507376 | Apr 4, 2001 | Apr 4, 2001 | Western Chief Oil & Gas Company | Wise | Penton #1 | 8,850 | 49734673 |
| 507273 | Apr 2, 2001 | Apr 2, 2001 | Western Chief Oil & Gas Company | Denton | Beckman-Pucci Unit #1 | 9,100 | 12130965 |
| 506070 | Mar 8, 2001 | Mar 8, 2001 | Western Chief Oil & Gas Company | Denton | Briscoe #2 | 8,700 | 12130937 |
| 506069 | Mar 8, 2001 | Mar 8, 2001 | Western Chief Oil & Gas Company | Denton | Briscoe #3 | 8,700 | 12130936 |
| 500946 | Oct 18, 2000 | Oct 18, 2000 | Western Chief Oil & Gas Company | Montague | Mayo #1 | 7,000 | 33733366 |
| 500022 | Sep 27, 2000 | Sep 27, 2000 | Western Chief Oil & Gas Company | Denton | Briscoe #1 | 8,700 | 12130831 |
| 481437 | Dec 15, 1998 | Dec 15, 1998 | Western Chief Oil & Gas Company | Parker | Ross #1 | 5,500 | 36733341 |
| 481436 | Dec 15, 1998 | Dec 15, 1998 | Western Chief Oil & Gas Company | Parker | McClendon, P. D. #1 | 3,800 | 36733340 |
| 471006 | Dec 9, 1997 | Dec 9, 1997 | Western Chief Oil & Gas Company | Gaines | Arco-Mobil #1 | 5,800 | 16535307 |
| 446355 | Mar 27, 1996 | Mar 27, 1996 | Western Chief Oil & Gas Company | Wise | Kramer-Nivens Unit #2 | 7,400 | 49734060 |
| 445858 | Mar 13, 1996 | Mar 13, 1996 | Western Chief Oil & Gas Company | Montague | Winn, Hazel #3 | 6,400 | 33733090 |
| 442203 | Nov 27, 1995 | Nov 27, 1995 | Western Chief Oil & Gas Company | Wise | Kramer-Nivens #1 | 7,200 | 49733972 |
| 442203Amendment | Nov 27, 1995 | Nov 27, 1995 | Western Chief Oil & Gas Company | Wise | Kramer-Nivens #1 | 7,200 | 49733972 |
| 441218 | Oct 24, 1995 | Oct 24, 1995 | Western Chief Oil & Gas Company | Montague | Winn, Hazel #2 | 6,300 | 33733057 |
| 439430 | Aug 30, 1995 | Aug 30, 1995 | Western Chief Oil & Gas Company | Montague | Winn, Hazel #1 | 6,400 | 33733051 |
| 431909 | Jan 20, 1995 | Jan 20, 1995 | Western Chief Oil & Gas Company | Jack | Booth, G. C. "D" #14 | 2,900 | 23704945 |
| 425027 | Jun 17, 1994 | Jun 17, 1994 | Western Chief Oil & Gas Company | Palo Pinto | Germany #1 | 4,500 | 36334288 |
| 423767 | May 13, 1994 | May 13, 1994 | Western Chief Oil & Gas Company | Jack | Shoun "C" #1 | 5,800 | 23738104 |
| 416718 | Oct 4, 1993 | Oct 4, 1993 | Western Chief Oil & Gas Company | Throckmorton | Massey #1 | 4,999 | 44735209 |
| 412064 | May 26, 1993 | May 26, 1993 | Western Chief Oil & Gas Company | Palo Pinto | Pierce, R. N. "A" #1 | 3,600 | 36334189 |
| 406763 | Dec 2, 1992 | Dec 2, 1992 | Western Chief Oil & Gas Company | Gaines | Houston #1 | 5,300 | 16534535 |
| 405152 | Oct 26, 1992 | Oct 26, 1992 | Western Chief Oil & Gas Company | Gaines | Odc - 93 #1 | 5,500 | 16534520 |
| 403305 | Sep 9, 1992 | Sep 9, 1992 | Western Chief Oil & Gas Company | Jack | Briley C #3 | 3,700 | 23737991 |
| 402668 | Aug 27, 1992 | Aug 27, 1992 | Western Chief Oil & Gas Company | Jack | Maxwell #1A | 3,200 | 23737987 |
| 402467 | Aug 18, 1992 | Aug 18, 1992 | Western Chief Oil & Gas Company | Jack | King-Box Unit #1 | 5,300 | 23737984 |
| 396724 | May 18, 1992 | May 18, 1992 | Western Chief Oil & Gas Company | Jack | King, Tony #1 | 5,300 | 23737937 |
| 373876 | May 29, 1990 | May 29, 1990 | Western Chief Oil & Gas Company | Jack | Shanafelt Trust #1A | 4,999 | 23737742 |
| 370263 | Feb 28, 1990 | Feb 28, 1990 | Western Chief Oil & Gas Company | Jack | Smith #2WD | 1,990 | 23736627 |
| 365765 | Nov 6, 1989 | Nov 6, 1989 | Western Chief Oil & Gas Company | Jack | Deck #3 | 4,600 | 23737409 |
| 362575 | Aug 9, 1989 | Aug 9, 1989 | Western Chief Oil & Gas Company | Young | Dragoo #7 | 1,000 | 50340059 |
| 360412 | Jul 5, 1989 | Jul 5, 1989 | Western Chief Oil & Gas Company | Young | Myers Unit #1 | 4,999 | 50340026 |
| 357541 | Mar 29, 1989 | Mar 29, 1989 | Western Chief Oil & Gas Company | Jack | Shoun Unit #1M | 5,900 | 23737609 |
| 355693 | Feb 1, 1989 | Feb 1, 1989 | Western Chief Oil & Gas Company | Young | Dragoo #6 | 1,000 | 50339953 |
| 353410 | Dec 21, 1988 | Dec 21, 1988 | Western Chief Oil & Gas Company | Jack | Nail Unit #3 | 5,900 | 23737567 |
| 353911 | Dec 5, 1988 | Dec 5, 1988 | Western Chief Oil & Gas Company | Burleson | McAmis #1 | 4,000 | 36333954 |
| 353369 | Nov 16, 1988 | Nov 16, 1988 | Western Chief Oil & Gas Company | Jack | Nail Unit #2 | 1,995 | 23737566 |
| 352662 | Oct 25, 1988 | Oct 25, 1988 | Western Chief Oil & Gas Company | Young | Dragoo #5 | 700 | 50339906 |
| 352662Amendment | Oct 25, 1988 | Oct 25, 1988 | Western Chief Oil & Gas Company | Young | Dragoo #5 | 700 | 50339906 |
| 345139 | Apr 13, 1988 | Apr 13, 1988 | Western Chief Oil & Gas Company | Young | Dragoo #4 | 3,700 | 50339767 |
| 342687 | Feb 17, 1988 | Feb 17, 1988 | Western Chief Oil & Gas Company | Throckmorton | Travis County School Lands #1045 | 4,999 | 44734845 |
| 340022 | Dec 11, 1987 | Dec 11, 1987 | Western Chief Oil & Gas Company | Jack | Kinder-Ainsworth #1 | 4,670 | 23737307 |
| 336605 | Sep 29, 1987 | Sep 29, 1987 | Western Chief Oil & Gas Company | Jack | Deck #3 | 4,999 | 23737409 |
| 327024 | Feb 25, 1987 | Feb 25, 1987 | Western Chief Oil & Gas Company | Jack | Kinder-Ainsworth #1 | 4,999 | 23737307 |
| 326049 | Feb 11, 1987 | Feb 11, 1987 | Western Chief Oil & Gas Company | Young | Dragoo #3 | 4,999 | 50339429 |
| 325220 | Jan 8, 1987 | Jan 8, 1987 | Western Chief Oil & Gas Company | Jack | Kinder "A" #1 | 4,999 | 23737289 |
| 323618 | Dec 8, 1986 | Dec 8, 1986 | Western Chief Oil & Gas Company | Smith | Dajani #1 | 5,500 | 42331095 |
| 321860 | Oct 14, 1986 | Oct 14, 1986 | Western Chief Oil & Gas Company | Young | Newman Estate #1 | 4,999 | 50339357 |
| 304494 | Jul 23, 1986 | Jul 23, 1986 | Western Chief Oil & Gas Company | Young | Dragoo #2 | 4,999 | 50339305 |
| 305534 | Jul 21, 1986 | Jul 21, 1986 | Western Chief Oil & Gas Company | Young | Pounds #1 | 4,999 | 50339324 |
| 304037 | Jul 11, 1986 | Jul 11, 1986 | Western Chief Oil & Gas Company | Young | Dragoo #1 | 4,999 | 50339301 |
| 303644 | Jun 26, 1986 | Jun 26, 1986 | Western Chief Oil & Gas Company | Jack | Kinder Estate #1 | 4,999 | 23737191 |
| 300710 | Apr 7, 1986 | Apr 7, 1986 | Western Chief Oil & Gas Company | Jack | Deck #2 | 4,999 | 23737144 |
| 299648 | Mar 14, 1986 | Mar 14, 1986 | Western Chief Oil & Gas Company | Jack | Ross Mountain #1 | 5,200 | 23737134 |
| 297870 | Feb 13, 1986 | Feb 13, 1986 | Western Chief Oil & Gas Company | Jack | Deck #1 | 5,200 | 23737108 |
| 294633 | Jan 7, 1986 | Jan 7, 1986 | Western Chief Oil & Gas Company | Eastland | Jordan #1 | 3,700 | 13336798 |
| 291460 | Dec 2, 1985 | Dec 2, 1985 | Western Chief Oil & Gas Company | Jack | Parrish-Marley #1 | 4,999 | 23737030 |
| 286269 | Oct 1, 1985 | Oct 1, 1985 | Western Chief Oil & Gas Company | Throckmorton | Polk County "A" #2 | 5,200 | 44734483 |
| 284713 | Sep 10, 1985 | Sep 10, 1985 | Western Chief Oil & Gas Company | Throckmorton | Polk County "A" #1 | 5,200 | 44734468 |
| 283651 | Aug 30, 1985 | Aug 30, 1985 | Western Chief Oil & Gas Company | Jack | Smith #2WD | 1,990 | 23736627 |
| 283438 | Aug 27, 1985 | Aug 27, 1985 | Western Chief Oil & Gas Company | Young | Myers, Ruby #1 | 4,999 | 50338913 |
| 283251 | Aug 27, 1985 | Aug 27, 1985 | Western Chief Oil & Gas Company | Throckmorton | Polk County #1WD | 1,990 | 44781638 |
| 281815 | Aug 6, 1985 | Aug 6, 1985 | Western Chief Oil & Gas Company | Young | Oldham #1 | 4,600 | 50338879 |
| 280791 | Jul 18, 1985 | Jul 18, 1985 | Western Chief Oil & Gas Company | Young | Salem Bend State #1 | 4,900 | 50338864 |
| 280578 | Jul 16, 1985 | Jul 16, 1985 | Western Chief Oil & Gas Company | Jack | Cooper, S. C. Estate #2 | 5,700 | 23736863 |
| 279536 | Jul 5, 1985 | Jul 5, 1985 | Western Chief Oil & Gas Company | Jack | Booth #2 | 6,000 | 23736849 |
| 278611 | Jun 24, 1985 | Jun 24, 1985 | Western Chief Oil & Gas Company | Young | Nantz #1 | 4,999 | 50338830 |
| 278127 | Jun 18, 1985 | Jun 18, 1985 | Western Chief Oil & Gas Company | Montague | Harrison, V. M. #1 | 6,500 | 33701786 |
| 277827 | Jun 14, 1985 | Jun 14, 1985 | Western Chief Oil & Gas Company | Jack | Doss #2 | 4,999 | 23736818 |
| 274519 | May 9, 1985 | May 9, 1985 | Western Chief Oil & Gas Company | Jack | Maxwell #2 | 4,999 | 23736782 |
| 274518 | May 9, 1985 | May 9, 1985 | Western Chief Oil & Gas Company | Jack | Rock Island - Maxwell Unit #1 | 4,999 | 23736781 |
| 274025 | May 3, 1985 | May 3, 1985 | Western Chief Oil & Gas Company | Jack | Dunlap "B" #3 | 5,700 | 23736776 |
| 273914 | May 2, 1985 | May 2, 1985 | Western Chief Oil & Gas Company | Young | Oldham #1 | 4,509 | 50338735 |
| 273125 | Apr 24, 1985 | Apr 24, 1985 | Western Chief Oil & Gas Company | Jack | B. S. & F. Survey, A-77 #2 | 4,999 | 23736759 |
| 271341 | Apr 2, 1985 | Apr 2, 1985 | Western Chief Oil & Gas Company | Jack | Jones #1 | 5,700 | 23736730 |
| 271035 | Mar 29, 1985 | Mar 29, 1985 | Western Chief Oil & Gas Company | Jack | Matlock, C. M. #1 | 6,000 | 23736724 |