TOM OCONNOR (4500 GRETA MASS.)
Field #90534350 · District 2 · --
Leases
9
Operators
6
Cum Oil
3.7M 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 |
|---|---|---|---|
| QUINTANA PET. CORP. | 4 | 3.5M | 2026-04 |
| HILCORP ENERGY COMPANY | 3 | 159k | 2026-04 |
| H & D OPERATING COMPANY | 1 | 39k | 1997-06 |
| PENNZOIL EXPLORATION & PROD. CO. | 1 | 728 | 1993-10 |
Lease Types
Leases (9)
| TYPE | LEASE | OPERATOR | OIL (BBL) | GAS (MCF) | FIRST | LAST |
|---|---|---|---|---|---|---|
| Oil | HEARD, FANNIE V. W., MRS. | QUINTANA PET. CORP. | 2.2M | 929k | 1993-01 | 2026-04 |
| Oil | OCONNOR, THOMAS, -C- | QUINTANA PET. CORP. | 646k | 278k | 1993-01 | 2026-04 |
| Oil | HEARD, CLEMENT | QUINTANA PET. CORP. | 539k | 277k | 1993-01 | 2026-04 |
| Oil | REILLY, ANNIE, ET VIR | QUINTANA PET. CORP. | 153k | 144k | 1993-01 | 2023-10 |
| Oil | CLEMENT HEARD 42 | HILCORP ENERGY COMPANY | 69k | 8k | 2019-08 | 2026-04 |
| Oil | MARY CLAIRE BAUER ET VIR | HILCORP ENERGY COMPANY | 56k | 12k | 2010-12 | 2026-04 |
| Oil | LAMBERT, M.F. | H & D OPERATING COMPANY | 39k | 36k | 1993-01 | 1997-06 |
| Oil | CLEMENT HEARD 41 | HILCORP ENERGY COMPANY | 34k | 2k | 2019-07 | 2023-03 |
| Oil | LAMBERT, M. F. | PENNZOIL EXPLORATION & PROD. CO. | 728 | 11k | 1993-01 | 1993-10 |