TOM OCONNOR (5500 SAND)
Field #90534725 · District 2 · --
Leases
22
Operators
12
Cum Oil
8.6M BBL
Cum Gas
134k 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. | 11 | 7.9M | 2026-04 |
| HILCORP ENERGY COMPANY | 5 | 17k | 2023-11 |
| T-C OIL COMPANY, LLC | 3 | 7k | 1998-06 |
| PENNZOIL EXPLORATION & PROD. CO. | 1 | 446k | 2026-04 |
| KOVAR OPERATING, LLC | 1 | 241k | 2019-05 |
| NORDAN & COMPANY | 1 | 2k | 1994-08 |
Lease Types
Leases (22)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | HEARD, FANNIE V. W., MRS. | QUINTANA PET. CORP. | 2.3M | 1.6M | 1993-01 | 2026-04 |
| Oil | OCONNOR, THOMAS, -C- | QUINTANA PET. CORP. | 2.2M | 2.1M | 1993-01 | 2026-04 |
| Oil | HEARD, CLEMENT | QUINTANA PET. CORP. | 1.3M | 986k | 1993-01 | 2026-04 |
| Oil | REILLY, ANNIE, ET VIR | QUINTANA PET. CORP. | 1.1M | 997k | 1993-01 | 2026-04 |
| Oil | LAMBERT, M. F. | PENNZOIL EXPLORATION & PROD. CO. | 446k | 1.6M | 1993-01 | 2026-04 |
| Oil | WILLIAMS, MAUDE, ETAL, -A- | QUINTANA PET. CORP. | 323k | 573k | 1993-01 | 2025-04 |
| Oil | BAUER, MARY CLAIRE, ET VIR | QUINTANA PET. CORP. | 274k | 419k | 1993-01 | 2023-12 |
| Oil | LAMBERT, M. F. | KOVAR OPERATING, LLC | 241k | 367k | 1993-01 | 2019-05 |
| Oil | HEARD, CLAUDE E., ETAL | QUINTANA PET. CORP. | 196k | 433k | 1993-01 | 2011-03 |
| Oil | OCONNOR, THOMAS, -A- | QUINTANA PET. CORP. | 151k | 150k | 1993-01 | 2022-01 |
| Oil | MAUDE WILLIAMS ET AL 'B' | HILCORP ENERGY COMPANY | 17k | 9k | 2015-11 | 2023-11 |
| Oil | OCONNOR, THOMAS "E" | T-C OIL COMPANY, LLC | 4k | 9k | 1993-01 | 1998-03 |
| Oil | HEARD, IRA, -A- | QUINTANA PET. CORP. | 3k | 14k | 1993-01 | 1995-10 |
| Oil | NORDAN & MORRIS, THOS. OCONNOR | T - C OIL COMPANY | 2k | 3k | 1993-01 | 1998-06 |
| Oil | NORDAN,L. A.-OCONNOR,THOS.,EST. | NORDAN & COMPANY | 2k | 13k | 1993-01 | 1994-08 |
| Oil | O'CONNOR, THOMAS "B" | T-C OIL COMPANY, LLC | 911 | 3k | 1997-07 | 1998-06 |
| Oil | WILLIAMS, MAUDE ET AL "B" | QUINTANA PET. CORP. | 182 | 1k | 1996-03 | 1997-09 |
| Gas | HEARD, FANNIE V. W. MRS. | HILCORP ENERGY COMPANY | 0 | 109k | 2005-03 | 2019-07 |
| Oil | IRA HEARD "A" | HILCORP ENERGY COMPANY | 0 | 0 | 2009-05 | -- |
| Oil | LAMBERT, M. F. | HILCORP ENERGY COMPANY | 0 | 0 | 2001-06 | -- |
| Gas | HEARD, MRS. FANNIE V. W. | QUINTANA PET. CORP. | 0 | 25k | 1994-02 | 1994-10 |
| Gas | THOMAS O'CONNOR -C- | HILCORP ENERGY COMPANY | 0 | 0 | 2017-02 | -- |