TOM OCONNOR (4400)
Field #90534325 · District 2 · --
Leases
38
Operators
11
Cum Oil
4.1M BBL
Cum Gas
27.6M 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 |
|---|---|---|---|
| QUINTANA PET. CORP. | 20 | 789k | 2026-04 |
| HILCORP ENERGY COMPANY | 15 | 70k | 2026-04 |
| PENNZOIL EXPLORATION & PROD. CO. | 1 | 1.7M | 2026-04 |
| T-C OIL COMPANY, LLC | 1 | 852k | 2015-03 |
| KOVAR OPERATING, LLC | 1 | 661k | 2020-03 |
Lease Types
Leases (38)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | LAMBERT, M. F. | PENNZOIL EXPLORATION & PROD. CO. | 1.7M | 2.5M | 1993-01 | 2026-04 |
| Oil | MELLON OIL UNIT | T-C OIL COMPANY, LLC | 852k | 451k | 1993-01 | 2015-03 |
| Oil | HEARD, CLAUDE E. ET AL | QUINTANA PET. CORP. | 760k | 407k | 1993-01 | 2026-04 |
| Oil | LAMBERT, M. F. | KOVAR OPERATING, LLC | 661k | 1.2M | 1993-01 | 2020-03 |
| Oil | LAMBERT E, M.F. | HILCORP ENERGY COMPANY | 35k | 937 | 2023-10 | 2026-04 |
| Oil | HEARD, IRA "B" | HILCORP ENERGY COMPANY | 25k | 58k | 2008-07 | 2022-10 |
| Oil | HEARD, CLEMENT | QUINTANA PET. CORP. | 16k | 56k | 1993-01 | 2006-02 |
| Oil | HEARD, FANNIE V. W. MRS. | QUINTANA PET. CORP. | 6k | 2k | 1996-04 | 1998-06 |
| Oil | OCONNOR, THOMAS, -A- | QUINTANA PET. CORP. | 6k | 81k | 1993-01 | 1996-09 |
| Oil | THOMAS O'CONNOR 'C' | HILCORP ENERGY COMPANY | 4k | 3k | 2012-10 | 2026-03 |
| Oil | IRA HEARD 'A' | HILCORP ENERGY COMPANY | 3k | 3k | 2012-04 | 2025-10 |
| Oil | WILLIAMS, MAUDE, ETAL -B- | QUINTANA PET. CORP. | 1k | 8k | 1993-01 | 1998-02 |
| Oil | CLEMENT HEARD | HILCORP ENERGY COMPANY | 1k | 150 | 2010-05 | 2023-08 |
| Oil | WILSON HEARD "A" | HILCORP ENERGY COMPANY | 741 | 2k | 2009-02 | 2009-08 |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 249k | 2001-12 | 2003-08 |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 420k | 2001-09 | 2003-01 |
| Gas | BAUER, MARY | QUINTANA PET. CORP. | 0 | 0 | 1993-01 | -- |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 3.1M | 1993-01 | 2002-05 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 1.1M | 1993-01 | 1997-06 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 2.6M | 1993-01 | 2001-05 |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 333k | 2002-06 | 2005-01 |
| Gas | HEARD, IRA "A" | QUINTANA PET. CORP. | 0 | 0 | 1993-01 | -- |
| Gas | TOM O'CONNOR 440 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 834k | 2001-09 | 2007-12 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 3.9M | 1993-01 | 2005-07 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 3.1M | 1993-01 | 2003-07 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 31 | 1993-01 | 1993-01 |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 1.8M | 1997-11 | 2003-02 |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 1.2M | 1997-02 | 2002-09 |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 402k | 2001-12 | 2004-03 |
| Oil | BAUER, MARY CLAIRE ET VIR | HILCORP ENERGY COMPANY | 0 | 0 | 2008-04 | -- |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 611k | 2001-10 | 2004-04 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 3.5M | 1993-01 | 2004-11 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 366k | 1993-01 | 2002-08 |
| Gas | TOM O'CONNOR 4400 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 749k | 2002-03 | 2003-11 |
| Oil | WILLIAMS, MAUDE, ETAL -A- | QUINTANA PET. CORP. | 0 | 0 | 1993-01 | -- |
| Oil | OCONNOR, THOMAS -C- | QUINTANA PET. CORP. | 0 | 0 | 1993-01 | -- |
| Gas | O'CONNOR, TOM 4400 SAND GAS UNIT | HILCORP ENERGY COMPANY | 0 | 2k | 2005-07 | 2007-01 |
| Gas | TOM OCONNOR 4400 SAND GAS UNIT | QUINTANA PET. CORP. | 0 | 3.1M | 1993-01 | 2004-12 |