HOWARD GLASSCOCK
Field #42971001 · District 10 · --
Leases
241
Operators
183
Cum Oil
48.3M BBL
Cum Gas
0 MCF
Production
1993-01 — 2026-07
Production History Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
RRC production reported through Apr 2026 · recent months incomplete
Type Curve (normalized avg across leases)
Click Load to compute type curve from lease data
Top Operators
| OPERATOR | LEASES | OIL (BBL) | LAST |
|---|---|---|---|
| CONOCOPHILLIPS COMPANY | 34 | 12.0M | 2011-11 |
| MARATHON OIL COMPANY | 28 | 3.3M | 2011-11 |
| WASH, ROBERT C. INC. | 16 | 1.2M | 2017-02 |
| WESTPORT OIL AND GAS COMPANY, LP | 13 | 3.4M | 2011-11 |
| UHC PETROLEUM CORPORATION | 11 | 203k | 2011-11 |
| SHERIDAN PRODUCTION COMPANY, LLC | 9 | 13.5M | 2012-01 |
| LEGACY RESERVES OPERATING LP | 9 | 858k | 2011-11 |
| SAGA PET. LTD LIABILITY CO OF CO | 7 | 102k | 2014-10 |
| MERIT ENERGY COMPANY | 6 | 544k | 2011-11 |
| UHC PETROLEUM CORPORATION | 6 | 58k | 2011-10 |
Lease Types
Leases (100)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | ROBERTS, DORA, B. D. & E. | SHERIDAN PRODUCTION COMPANY, LLC | 5.3M | 17k | 1993-01 | 2011-11 |
| Oil | GLASSCOCK, HOWARD W. (G-S) UNIT | SHERIDAN PRODUCTION COMPANY, LLC | 4.4M | 70k | 1993-01 | 2011-11 |
| Oil | SETTLES, W. R. -A- | CONOCOPHILLIPS COMPANY | 3.1M | 72k | 1993-01 | 2011-11 |
| Oil | KLOH | MARATHON OIL COMPANY | 2.6M | 75k | 1993-01 | 2011-11 |
| Oil | KLOH | SOUTHLAND ROYALTY COMPANY | 1.8M | 751 | 1993-01 | 2011-11 |
| Oil | ROBERTS, DORA | SHERIDAN PRODUCTION COMPANY, LLC | 1.8M | 15k | 1993-01 | 2011-11 |
| Oil | OVERTON, B. | CONOCOPHILLIPS COMPANY | 1.6M | 30k | 1993-01 | 2011-11 |
| Oil | SETTLES,W.R. | SCYTHIAN, LTD. | 1.5M | 70k | 1993-01 | 2011-11 |
| Oil | HOWARD GLASSCOCK EAST UNIT | WESTPORT OIL AND GAS COMPANY, LP | 1.4M | 97k | 1998-01 | 2011-11 |
| Oil | SETTLES, W. R. | CONOCOPHILLIPS COMPANY | 1.4M | 59k | 1993-01 | 2011-11 |
| Oil | KLOH ETAL | WESTPORT OIL AND GAS COMPANY, LP | 1.2M | 3k | 1993-01 | 2011-11 |
| Oil | SETTLES-YATES UNIT | CONOCOPHILLIPS COMPANY | 1.1M | 34k | 1993-01 | 2011-11 |
| Oil | SETTLES, W. R. | SHERIDAN PRODUCTION COMPANY, LLC | 971k | 9k | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. | SCYTHIAN, LTD. | 879k | 69k | 1993-01 | 2011-11 |
| Oil | CLAY | WOOD, MCSHANE & THAMS | 865k | 415k | 1993-01 | 2011-11 |
| Oil | CHALK-DUNCAN | CONOCOPHILLIPS COMPANY | 858k | 165k | 1993-01 | 2011-11 |
| Oil | EASON, S. T. | CONOCOPHILLIPS COMPANY | 793k | 12k | 1993-01 | 2011-11 |
| Oil | WARDER | SHERIDAN PRODUCTION COMPANY, LLC | 705k | 11k | 1993-01 | 2011-11 |
| Oil | ROBERTS, DORA | WESTPORT OIL AND GAS COMPANY, LP | 638k | 39k | 1993-01 | 2011-11 |
| Oil | KLOH -A- | SOUTHLAND ROYALTY COMPANY | 609k | 8k | 1993-01 | 2011-11 |
| Oil | ROBERTS, DORA | CONOCOPHILLIPS COMPANY | 607k | 2k | 1993-01 | 2011-11 |
| Oil | PHILLIPS | SOUTHLAND ROYALTY COMPANY | 552k | 21 | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -E- | WESTPORT OIL AND GAS COMPANY, LP | 526k | 5k | 1993-01 | 2011-11 |
| Oil | CHALK | SAMEDAN OIL CORPORATION | 491k | 38k | 1993-01 | 2011-11 |
| Oil | KLOH-RUMSEY | LEGACY RESERVES OPERATING LP | 482k | 187 | 1993-01 | 2011-11 |
| Oil | CHALK, OTIS | UNION OIL COMPANY OF CALIFORNIA | 410k | 226k | 1993-01 | 2011-11 |
| Oil | DOUTHIT UNIT | STEPHENS, AUTRY C. | 408k | 1k | 1993-01 | 2011-11 |
| Oil | CHALK, G. O. -G- | CONOCOPHILLIPS COMPANY | 286k | 59k | 1993-01 | 2011-11 |
| Oil | CHALK -A- | WOOD, MCSHANE & THAMS | 267k | 164k | 1993-01 | 2011-11 |
| Oil | DOUTHIT | CONOCOPHILLIPS COMPANY | 246k | 79k | 1993-01 | 2011-11 |
| Oil | CHALK, OTIS /EO/ | WOOD, MCSHANE & THAMS | 243k | 168k | 1993-01 | 2011-11 |
| Oil | SETTLES, W. R. -A- | WASH, ROBERT C. INC. | 234k | 118 | 1993-01 | 2011-11 |
| Oil | OVERTON, B. -A- | CONOCOPHILLIPS COMPANY | 230k | 12k | 1993-01 | 2011-11 |
| Oil | SETTLES -A- & -B- | SOUTHLAND ROYALTY COMPANY | 230k | 4k | 1993-01 | 2011-11 |
| Oil | ROBERTS, DORA | COLLINS & WARE, INC. | 226k | 23 | 1993-01 | 2011-11 |
| Oil | ROBERTS, DORA, -A- | SOUTHLAND ROYALTY COMPANY | 219k | 2k | 1993-01 | 2011-11 |
| Oil | CHALK, MARY | CONOCOPHILLIPS COMPANY | 212k | 108k | 1993-01 | 2011-11 |
| Oil | CHALK, G. O. | WOOD, MCSHANE & THAMS | 211k | 14k | 1993-01 | 2011-11 |
| Oil | PHILLIPS, H. | WESTPORT OIL AND GAS COMPANY, LP | 208k | 1k | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -A- | WESTPORT OIL AND GAS COMPANY, LP | 205k | 12k | 1993-01 | 2011-11 |
| Oil | CHALK, G. O. -E- | CONOCOPHILLIPS COMPANY | 195k | 69k | 1993-01 | 2011-11 |
| Oil | HYMAN, SARAH | CONOCOPHILLIPS COMPANY | 192k | 92k | 1993-01 | 2011-11 |
| Oil | M. M. EDWARDS | SAMSON RESOURCES COMPANY | 191k | 72 | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -C- | WESTPORT OIL AND GAS COMPANY, LP | 191k | 7k | 1993-01 | 2011-11 |
| Oil | ROBERTS, DORA YATES WATERFLOOD | COLLINS & WARE, INC. | 189k | 23 | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. | WASH, ROBERT C. INC. | 186k | 45 | 1993-01 | 2011-11 |
| Oil | SETTLES -D- | SHERIDAN PRODUCTION COMPANY, LLC | 175k | 8k | 1993-01 | 2011-03 |
| Oil | STEWART YATES SAND UNIT | WASH, ROBERT C. INC. | 175k | 128 | 1993-01 | 2011-11 |
| Oil | CHALK | SHENANDOAH PETROLEUM CORPORATION | 165k | 20 | 1993-01 | 2011-11 |
| Oil | SCOTT, R. C. | MARATHON OIL COMPANY | 161k | 120 | 1993-01 | 1997-12 |
| Oil | CHALK, OTIS | TRIUMPH EXPLORATION, INC. | 160k | 21 | 1993-01 | 2011-12 |
| Oil | OWEN-CHALK | CONOCOPHILLIPS COMPANY | 158k | 38k | 1993-01 | 2011-11 |
| Oil | DOUTHIT, E. W., -B- DE | MERIT ENERGY COMPANY | 150k | 41k | 1993-01 | 2011-11 |
| Oil | SETTLES | WASH, ROBERT C. INC. | 148k | 149 | 1993-01 | 2011-11 |
| Oil | HALL | SAMSON RESOURCES COMPANY | 142k | 63 | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -B- AMOCO | WESTPORT OIL AND GAS COMPANY, LP | 137k | 4k | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -A- | WASH, ROBERT C. INC. | 135k | 118 | 1993-01 | 2011-11 |
| Oil | SETTLES, W. R. -B- | CONOCOPHILLIPS COMPANY | 133k | 5k | 1993-01 | 2011-11 |
| Oil | CHALK, SLOAN | CONOCOPHILLIPS COMPANY | 132k | 23k | 1993-01 | 2011-11 |
| Oil | GILBREATH, S. | WESTPORT OIL AND GAS COMPANY, LP | 127k | 1k | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -A- | ROBERTSON RESOURCES, INC. | 127k | 56k | 1993-01 | 2014-10 |
| Oil | SETTLES -A- | LEGACY RESERVES OPERATING LP | 122k | 187 | 1993-01 | 2011-11 |
| Oil | REED, L. R. & W. N. | MERIT ENERGY COMPANY | 114k | 2k | 1993-01 | 2011-11 |
| Oil | BOWEN, JOHN | MARATHON OIL COMPANY | 113k | 21 | 1993-01 | 2011-11 |
| Oil | REED"A" | STEPHENS, AUTRY C. | 110k | 2k | 1993-01 | 2011-11 |
| Oil | KLOH, A. | LEGACY RESERVES OPERATING LP | 107k | 186 | 1993-01 | 2011-11 |
| Oil | REED, W. N. & L. R. | CONOCOPHILLIPS COMPANY | 106k | 19k | 1993-01 | 2011-11 |
| Oil | ROBERTS, DORA, -E- | WASH, ROBERT C. INC. | 105k | 126 | 1993-01 | 2011-11 |
| Oil | REED BROTHERS DE | MERIT ENERGY COMPANY | 105k | 7k | 1993-01 | 2011-11 |
| Oil | SETTLES, W. R. -C- | CONOCOPHILLIPS COMPANY | 102k | 8k | 1993-01 | 2011-11 |
| Oil | DOUTHIT, E. W., -C- DE | MERIT ENERGY COMPANY | 98k | 15k | 1993-01 | 2011-11 |
| Oil | STEWART, G. C. | COLLINS & WARE, INC. | 96k | 23 | 1993-01 | 2011-11 |
| Oil | SETTLES, W. R. -A- | TAYLOR TWO ENERGY, LLC | 92k | 260 | 1993-01 | 2014-09 |
| Oil | ABRAMS | WASH, ROBERT C. INC. | 87k | 52 | 1993-01 | 2011-11 |
| Oil | EDWARDS -C- | ASHBROOK OIL CO. | 87k | 21 | 1993-01 | 2014-09 |
| Oil | CHALK "A" | SAMEDAN OIL CORPORATION | 86k | 9k | 1993-01 | 2011-11 |
| Oil | HOOKS | MOSS PETROLEUM COMPANY | 86k | 20 | 1993-01 | 2011-11 |
| Oil | STEWART, G. C. | LEGACY RESERVES OPERATING LP | 84k | 187 | 1993-01 | 2011-11 |
| Oil | SETTLES -B- | SHERIDAN PRODUCTION COMPANY, LLC | 76k | 3k | 1993-01 | 2011-11 |
| Oil | CHALK, G. O. -D- | CONOCOPHILLIPS COMPANY | 74k | 8k | 1993-01 | 2011-11 |
| Oil | CHALK ESTATE | CONOCOPHILLIPS COMPANY | 71k | 11k | 1993-01 | 2011-11 |
| Oil | BATJER, PATTI -B- | STEPHENS, AUTRY C. | 71k | 78 | 1993-01 | 2011-11 |
| Oil | CHALK, OTIS | KEELEY OIL, L.L.C. | 68k | 22 | 1993-01 | 2014-08 |
| Oil | CHALK, MARY | MARATHON OIL COMPANY | 63k | 21 | 1993-01 | 2011-11 |
| Oil | EDWARDS | XERIC OIL & GAS CORPORATION | 61k | 4 | 1993-01 | 2011-10 |
| Oil | HEUSINGER, A. R. | MARATHON OIL COMPANY | 61k | 32 | 1993-01 | 1997-12 |
| Oil | TURNER, SAM | RICHMOND DRILLING COMPANY, INC. | 60k | 12k | 1993-01 | 2014-10 |
| Oil | CHALK -B- DUNCAN | CONOCOPHILLIPS COMPANY | 58k | 5k | 1993-01 | 2011-11 |
| Oil | REED -A- | CONOCOPHILLIPS COMPANY | 56k | 11k | 1993-01 | 2011-11 |
| Oil | DOUTHIT-B 1 | CONOCOPHILLIPS COMPANY | 56k | 30k | 1993-01 | 2011-11 |
| Oil | CHALK, G. O. -C- | CONOCOPHILLIPS COMPANY | 55k | 6k | 1993-01 | 2011-11 |
| Oil | DOUTHIT, E. W., -A- DE | MERIT ENERGY COMPANY | 55k | 19k | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -G- | WESTPORT OIL AND GAS COMPANY, LP | 54k | 3k | 1993-01 | 2011-11 |
| Oil | DOUTHIT, E. W., ETUX | WASH, ROBERT C. INC. | 54k | 11k | 1993-01 | 2011-11 |
| Oil | CLAY, H. R. -B- | ROBERTSON RESOURCES, INC. | 51k | 27 | 1993-01 | 2014-10 |
| Oil | ROBERTS -C- | MGM OIL & GAS COMPANY | 51k | 20 | 1993-01 | 2011-11 |
| Oil | CLAY, H.R.-MCNALEN | WESTPORT OIL AND GAS COMPANY, LP | 51k | 594 | 1993-01 | 2011-11 |
| Oil | HYMAN-CHALK | CONOCOPHILLIPS COMPANY | 49k | 16k | 1993-01 | 2011-11 |
| Oil | HOOKS | SOUTHWEST ROYALTIES, INC. | 47k | 21 | 1993-01 | 2011-11 |
| Oil | CHALK, G. O. | CONOCOPHILLIPS COMPANY | 46k | 9k | 1993-01 | 2011-11 |