| Chalk G. O.-G- #48W42-227-34138 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveInjection | 2,490 | Jan 29, 1987 | — | — |
| Chalk Estate #27W42-227-34139 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveInjection | 2,503 | Jan 29, 1987 | — | — |
| Douthit-B 1 #19W42-227-34141 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | Shut inOil | 2,500 | Jan 29, 1987 | — | — |
| Howard "B" #1342-227-34142 | Dorland, D. L. Inc.permitted by · no operator of record | Howard, TXSnyder | Not on schedule | 3,200 | Jan 29, 1987 | — | — |
| Chalk G. O.-G- #4742-227-34133 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 2,500 | Jan 22, 1987 | — | — |
| Chalk Mary #7242-227-34134 | Conocophillips Company only | Howard, TXHoward Glasscock | PluggedOil | 2,500 | Jan 22, 1987 | — | — |
| Douthit-B 1 #1842-227-34135 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 2,500 | Jan 22, 1987 | — | — |
| Chalk G. O.-G- #4342-227-34136 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | Shut inOil | 2,500 | Jan 22, 1987 | — | — |
| Blassingame #3D42-227-34129 | Surge Operating LLC only | Howard, TXLuther SE. (Silurian-Devonian) | PluggedOil | 10,150 | Jan 14, 1987 | — | — |
| Brown #1__42-227-34126 | Durham, Inc.permitted by · no operator of record | Howard, TX | Plugged | 8,200 | Jan 13, 1987 | — | — |
| 8611 JV-P Lockhart #642-227-34124 | BTA Oil Producers only | Howard, TXLuther SE. (Silurian-Devonian) | PluggedOil | 10,000 | Jan 5, 1987 | — | — |
| Jones #142-227-33618 | Wes-Tex Drlg. Co. only | Howard, TXKnott SW. (Fusselman) | PluggedOil | 10,600 | Dec 31, 1986 | — | — |
| Meador/Cathey Unit #1A42-227-34123 | Lawless Energy, Inc.permitted by · no operator of record | Howard, TX | Plugged | 4,600 | Dec 31, 1986 | — | — |
| Saunders #142-227-34121 | Free Rein Operating LLC only | Howard, TXMoore | ActiveOil | 3,300 | Dec 30, 1986 | — | — |
| Fisher, Edward et al #142-227-34120 | Walker & Schiemenzpermitted by · no operator of record | Howard, TX | Plugged | 9,000 | Dec 29, 1986 | — | — |
| Bogie #142-227-34122 | Gillespie, Charles B. Jr.permitted by · no operator of record | Howard, TX | Plugged | 7,500 | Dec 29, 1986 | — | — |
| Chalk -a- #942-227-34079 | Sweet Crude Operating LLC only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 3,090 | Dec 16, 1986 | — | — |
| Battjer Patti #142-227-34119 | Wash Robert C. Inc. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 3,900 | Dec 16, 1986 | — | — |
| Roberts Dora #642-227-10265 | Boyles L. S. only | Howard, TXHoward Glasscock | PluggedOil | 3,000 | Dec 12, 1986 | — | — |
| Roberts Dora #742-227-10266 | Boyles L. S. only | Howard, TXHoward Glasscock | PluggedOil | 3,000 | Dec 12, 1986 | — | — |
| Grantham #142-227-34118 | Excalibur Oil & Gas Corporationpermitted by · no operator of record | Howard, TX | Not on schedule | 10,500 | Dec 11, 1986 | — | — |
| Blassingame #242-227-34117 | Surge Operating LLC only | Howard, TXLuther SE. (Silurian-Devonian) | PluggedOil | 10,200 | Dec 10, 1986 | — | — |
| Griffin -23- #142-227-34116 | Meridian Oil Inc. only | Howard, TXGriffin N. (Penn) | PluggedOil | 8,300 | Dec 3, 1986 | — | — |
| Chalk Mary #7142-227-34102 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveInjection | 2,500 | Nov 26, 1986 | — | — |
| Red Draw #442-227-34114 | Guthrie A. K. Operating Co. only | Howard, TXHoward-Glasscock (Wolfcamp 7400) | PluggedOil | 8,500 | Nov 26, 1986 | — | — |
| Owen-Chalk #5342-227-34108 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | Shut inOil | 2,500 | Nov 25, 1986 | — | — |
| Hyman Sarah #4242-227-34104 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 2,500 | Nov 24, 1986 | — | — |
| Haney #142-227-34111 | Tucker Drilling Company, Inc.permitted by · no operator of record | Howard, TX | Plugged | 10,000 | Nov 24, 1986 | — | — |
| Red Draw #342-227-34110 | Guthrie A. K. Operating Co. only | Howard, TXHoward-Glasscock (Wolfcamp 7400) | PluggedOil | 7,600 | Nov 20, 1986 | — | — |
| Chalk Sloan #2842-227-34096 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 2,500 | Nov 18, 1986 | — | — |
| Kloh #33U42-227-34109 | Grayrock Energy II LLC only | Howard, TXHoward Glasscock (Consolidated) | ActiveInjection | 4,500 | Nov 18, 1986 | — | — |
| Cole Doris Chalk #142-227-34098 | R2Q Operating LLC only | Howard, TXHoward-Glasscock (Wolfcamp 7400) | Shut inOil | 7,704 | Nov 14, 1986 | — | — |
| Son of Big Bad #142-227-34107 | Mid River Midstream LLC only | Howard, TXParallel-Wolfe (Fusselman) | ActiveInjection | 10,423 | Nov 14, 1986 | — | — |
| Hyman Sarah #43W42-227-34099 | Conocophillips Company only | Howard, TXHoward Glasscock | PluggedOil | 2,600 | Nov 13, 1986 | — | — |
| Chalk Mary #74W42-227-34100 | Conocophillips Company only | Howard, TXHoward Glasscock | PluggedOil | 2,600 | Nov 13, 1986 | — | — |
| Chalk Estate #2542-227-34101 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 2,500 | Nov 13, 1986 | — | — |
| Chalk Estate #2642-227-34103 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | PluggedOil | 2,600 | Nov 13, 1986 | — | — |
| Hyman Sarah #4142-227-34105 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 2,501 | Nov 13, 1986 | — | — |
| Hyman Sarah #40W42-227-34106 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveInjection | 2,516 | Nov 13, 1986 | — | — |
| Owen-Chalk #51W42-227-34086 | Conocophillips Company only | Howard, TXHoward Glasscock | PluggedOil | 2,600 | Nov 12, 1986 | — | — |
| Owen-Chalk #48W42-227-34087 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | Shut inOil | 2,500 | Nov 12, 1986 | — | — |
| Owen-Chalk #49W42-227-34088 | Conocophillips Company only | Howard, TXHoward Glasscock | PluggedOil | 2,600 | Nov 12, 1986 | — | — |
| Owen-Chalk #47 W42-227-34089 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | PluggedOil | 2,600 | Nov 12, 1986 | — | — |
| Owen-Chalk #5442-227-34090 | Conocophillips Company only | Howard, TXHoward Glasscock | PluggedOil | 2,600 | Nov 12, 1986 | — | — |
| Chalk Sloan #2642-227-34095 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | Shut inOil | 2,500 | Nov 12, 1986 | — | — |
| Chalk Sloan #2742-227-34097 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | Shut inOil | 2,500 | Nov 12, 1986 | — | — |
| Chalk G. O.-G- #4142-227-34091 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | Shut inOil | 2,507 | Nov 7, 1986 | — | — |
| Chalk G. O.-G- #4242-227-34092 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | ActiveOil | 2,500 | Nov 7, 1986 | — | — |
| Chalk G. O.-G- #4542-227-34093 | Citation Oil & Gas Corp. only | Howard, TXHoward Glasscock (Consolidated) | PluggedOil | 2,600 | Nov 7, 1986 | — | — |
| Fisherman #242-227-34078 | Montero Operating, Inc.permitted by · no operator of record | Howard, TXPrimero (Wolfcamp, Lower) | Not on schedule | 10,000 | Nov 6, 1986 | — | — |