WESTHOFF (COMBINED ASSOCIATED)
Field #96611400 · District 2 · --
Leases
59
Operators
21
Cum Oil
1.1M BBL
Cum Gas
6.8M MCF
Cum Cond
327k BBL
Production
2004-12 — 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 |
|---|---|---|---|
| WHITTIER OPERATING INC. | 16 | 414k | 2023-06 |
| AMBASSADOR PETROLEUM, INC. | 9 | 310 | 2011-02 |
| PROGENIES OPERATING LLC | 8 | 26k | 2018-07 |
| ENCON SERVICES, INC. | 7 | 12k | 2012-12 |
| VIPER S.W.D., LLC | 5 | 59k | 2026-04 |
| SUE-ANN OPERATING, L.C. | 3 | 0 | 2022-03 |
| MAGNUM PRODUCING, LP | 3 | 23k | 2017-12 |
| HG OPERATING LLC | 2 | 551k | 2024-11 |
| BXP OPERATING, LLC | 2 | 0 | 2018-02 |
| PEGASUS OPERATING, INC. | 1 | 0 | -- |
Lease Types
Leases (59)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | ROBBINS | HG OPERATING LLC | 551k | 963k | 2009-03 | 2024-11 |
| Oil | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 294k | 1.6M | 2004-12 | 2023-06 |
| Oil | HASDORFF "A" | WHITTIER OPERATING INC. | 111k | 174k | 2005-05 | 2017-02 |
| Oil | GRAVES, T.A. | VIPER S.W.D., LLC | 42k | 118k | 2008-07 | 2026-04 |
| Oil | SIMONS-HAFERNICK UNIT | MAGNUM PRODUCING, LP | 23k | 98k | 2014-02 | 2017-05 |
| Oil | SCHOMBURG-NAVIDAD RIVER UNIT | PROGENIES OPERATING LLC | 19k | 733k | 2008-02 | 2015-10 |
| Oil | STANFORD | VIPER S.W.D., LLC | 13k | 27k | 2008-01 | 2018-02 |
| Oil | KALLUS | ENCON SERVICES, INC. | 12k | 12k | 2007-03 | 2009-10 |
| Oil | WESTHOFF "A" | WHITTIER OPERATING INC. | 9k | 44k | 2006-10 | 2008-10 |
| Oil | SCHOMBURG | PROGENIES OPERATING LLC | 6k | 21k | 2009-10 | 2015-10 |
| Oil | HACKBARTH | VIPER S.W.D., LLC | 4k | 0 | 2022-01 | 2026-03 |
| Oil | NAVIDAD RIVER ET AL | PROGENIES OPERATING LLC | 1k | 150k | 2011-03 | 2015-05 |
| Oil | KALLUS | CONTOUR OIL & GAS, LLC | 329 | 0 | 2013-07 | 2013-09 |
| Oil | SCHOMBURG | AMBASSADOR PETROLEUM, INC. | 195 | 1k | 2008-08 | 2008-08 |
| Oil | HACKBARTH | AMBASSADOR PETROLEUM, INC. | 115 | 18k | 2008-05 | 2008-12 |
| Gas | MCDOWELL "A" | SUE-ANN OPERATING, L.C. | 0 | 264k | 2007-12 | 2020-10 |
| Gas | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 0 | 140k | 2004-12 | 2023-06 |
| Gas | SCHOMBURG-NAVIDAD RIVER UNIT | PROGENIES OPERATING LLC | 0 | 24k | 2014-04 | 2014-11 |
| Oil | PEREZ UNIT | PEGASUS OPERATING, INC. | 0 | 0 | 2011-06 | -- |
| Gas | ROBBINS | HG OPERATING LLC | 0 | 443k | 2013-08 | 2024-11 |
| Gas | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 0 | 22k | 2006-08 | 2021-11 |
| Gas | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 0 | 200k | 2004-12 | 2021-11 |
| Gas | WESTOFF, W. T. | ENCON SERVICES, INC. | 0 | 17k | 2007-12 | 2009-03 |
| Gas | KALLUS | ENCON SERVICES, INC. | 0 | 70k | 2009-11 | 2012-12 |
| Gas | HACKBARTH | VIPER S.W.D., LLC | 0 | 98k | 2008-12 | 2011-06 |
| Gas | MCDOWELL "A" | SUE-ANN OPERATING, L.C. | 0 | 941k | 2008-11 | 2022-03 |
| Gas | GRAVES, T.A. | AMBASSADOR PETROLEUM, INC. | 0 | 119k | 2008-05 | 2009-12 |
| Gas | ROBBINS | BXP OPERATING, LLC | 0 | 292k | 2010-01 | 2015-09 |
| Gas | NAVIDAD RIVER ET AL | AMBASSADOR PETROLEUM, INC. | 0 | 213k | 2009-08 | 2011-02 |
| Gas | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 0 | 44k | 2004-12 | 2008-01 |
| Gas | SCHOMBURG | AMBASSADOR PETROLEUM, INC. | 0 | 201k | 2008-09 | 2010-08 |
| Gas | WESTHOFF-VANCE | ENCON SERVICES, INC. | 0 | 4k | 2006-04 | 2006-08 |
| Gas | HASDORFF, BERTHA | WHITTIER OPERATING INC. | 0 | 0 | 2004-12 | -- |
| Gas | KALLUS | ENCON SERVICES, INC. | 0 | 6k | 2007-03 | 2007-03 |
| Gas | KOOP | PROGENIES OPERATING LLC | 0 | 459k | 2010-10 | 2018-07 |
| Gas | SCHOMBURG-NAVIDAD RIVER UNIT | AMBASSADOR PETROLEUM, INC. | 0 | 78k | 2008-08 | 2009-02 |
| Gas | ROBBINS | BXP OPERATING, LLC | 0 | 401k | 2010-12 | 2018-02 |
| Gas | SCHOMBURG | AMBASSADOR PETROLEUM, INC. | 0 | 18k | 2008-06 | 2008-08 |
| Gas | SIMONS-VANCE | MAGNUM PRODUCING, LP | 0 | 42k | 2014-11 | 2017-12 |
| Gas | MCDOWELL | WHITTIER OPERATING INC. | 0 | 159k | 2005-10 | 2008-10 |
| Gas | HASDORFF "A" | WHITTIER OPERATING INC. | 0 | 197k | 2004-12 | 2017-12 |
| Gas | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 0 | 204k | 2004-12 | 2021-11 |
| Gas | GRAVES | VIPER S.W.D., LLC | 0 | 597k | 2008-01 | 2014-10 |
| Gas | NAVIDAD RIVER ET AL | PROGENIES OPERATING LLC | 0 | 59k | 2009-08 | 2011-08 |
| Gas | HASDORFF "A" | WHITTIER OPERATING INC. | 0 | 312k | 2005-07 | 2010-01 |
| Oil | KALLUS | ENCON SERVICES, INC. | 0 | 0 | 2011-01 | -- |
| Gas | MCDOWELL | SUE-ANN OPERATING, L.C. | 0 | 139k | 2008-12 | 2019-10 |
| Oil | WESTHOFF, W.T. | ENCON SERVICES, INC. | 0 | 0 | 2006-12 | -- |
| Gas | NAVIDAD RIVER ET AL | PROGENIES OPERATING LLC | 0 | 16k | 2015-06 | 2016-06 |
| Gas | WESTHOFF, A.E. | SE USA OPERATING, INC. | 0 | 55k | 2008-12 | 2010-04 |
| Gas | MCDOWELL | WHITTIER OPERATING INC. | 0 | 200k | 2005-09 | 2022-03 |
| Gas | HAFERNICK UNIT | MAGNUM PRODUCING, LP | 0 | 738 | 2014-03 | 2014-05 |
| Gas | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 0 | 455k | 2004-12 | 2021-11 |
| Gas | HASDORFF "A" | WHITTIER OPERATING INC. | 0 | 12k | 2006-12 | 2008-07 |
| Oil | SCHOMBURG - NAVIDAD RIVER UNIT | AMBASSADOR PETROLEUM, INC. | 0 | 0 | 2009-02 | -- |
| Gas | HACKBARTH | SIR DRAKE OIL AND GAS COMPANY | 0 | 150k | 2009-06 | 2020-06 |
| Oil | GRAVES, T.A. | AMBASSADOR PETROLEUM, INC. | 0 | 0 | 2008-07 | -- |
| Gas | WESTHOFF, A. E. | WHITTIER OPERATING INC. | 0 | 35k | 2004-12 | 2021-11 |
| Gas | NAVIDAD RIVER UNIT | PROGENIES OPERATING LLC | 0 | 83k | 2007-12 | 2016-11 |