OperatorsUnion Oil Company of California
Union Oil Company of California
active 00003- Sort name
- UNION OIL COMPANY OF CALIFORNIA
- Address
- Houston, TX · United States
- Started
- 1955-06-13
Active leases (operator)
18
Wells on operated leases
190
Platforms installed
2
APDs filed (lifetime)
301
12 this year
2026 oil
27.40MBBL
INCs (5yr)
4
of 4,048 lifetime
Production · operated leases
Top operated leases · by lifetime oil
| Lease | Status | Blocks | Last produced | Oil (BBL) | Gas (MCF) |
|---|---|---|---|---|---|
| G15610 | UNIT | 1 | 2026-04-01 | 237,497,434 | 73,798,408 |
| G21245 | UNIT | 1 | 2026-04-01 | 221,313,284 | 53,533,679 |
| G09982 | UNIT | 1 | 2026-04-01 | 101,083,020 | 26,632,123 |
| G16641 | UNIT | 1 | 2026-04-01 | 90,649,027 | 70,404,352 |
| G26315 | UNIT | 1 | 2026-04-01 | 61,619,875 | 31,471,226 |
| G15609 | UNIT | 1 | 2026-04-01 | 47,039,373 | 11,201,025 |
| G09981 | UNIT | 1 | 2026-04-01 | 31,930,458 | 7,595,305 |
| G18745 | UNIT | 1 | 2026-04-01 | 30,873,465 | 7,284,539 |
| G21801 | UNIT | 1 | 2026-05-01 | 27,191,346 | 20,978,245 |
| G18753 | UNIT | 1 | 2026-04-01 | 25,856,303 | 6,281,148 |
| G26313 | UNIT | 1 | 2026-04-01 | 16,075,181 | 8,823,602 |
| G21182 | UNIT | 1 | 2026-04-01 | 13,731,890 | 5,291,534 |
| G28100 | UNIT | 1 | 2026-04-01 | 9,314,649 | 2,012,579 |
| G20871 | UNIT | 1 | 2026-04-01 | 8,988,022 | 30,228,777 |
| G34551 | UNIT | 1 | — | — | — |
Drilling lifecycle · last 5 years
Times measured per wellbore. Operator medians shown alongside the industry median for context — green when faster than industry, red when slower.
Wells drilled (5yr)
2
of 250 lifetime
Median drilling days
35d
industry median 19d
·
+16d
Plan → spud
0d
industry median 4d
APD review
94d
file → approval
APMs / well
2.3
plan-revision rate
Plan slip
1d
planned spud → actual
Pace by year
Drilling duration mix · 5yr
Recently spudded wells
| API # | Well | Status | Spud | TD | EOR | Drill days | APMs | Lease | WD ft |
|---|---|---|---|---|---|---|---|---|---|
| 608124016200 | PS009 | TA | 2026-04-04 | 2026-05-06 | 2026-05-24 | 32 | 2 | G21245 | 7,038 |
| 608124016100 | IS002 | DSI | 2026-03-31 | — | 2026-03-31 | — | 2 | G18753 | 7,035 |
| 608124015100 | PS008 | COM | 2023-10-14 | 2023-11-21 | 2024-01-15 | 38 | 3 | G18753 | 7,037 |
| 608124013600 | PS006 | COM | 2021-04-11 | 2021-05-27 | 2021-08-05 | 46 | 4 | G18753 | 7,032 |
| 608124013500 | IS001 | COM | 2020-12-26 | 2021-02-09 | 2023-11-12 | 45 | 18 | G21245 | 6,918 |
| 608124013300 | IS003 | COM | 2020-08-14 | 2020-11-29 | 2023-09-17 | 107 | 21 | G21245 | 6,913 |
| 608124013202 | PN005 | COM | 2020-07-11 | 2020-09-30 | 2021-02-01 | 81 | 4 | G18745 | 6,800 |
| 608124013201 | PN005 | ST | 2020-06-19 | 2020-07-02 | 2020-07-02 | 13 | 1 | G18745 | 6,800 |
| 608124013200 | PN005 | ST | 2020-05-17 | 2020-06-12 | 2020-06-19 | 26 | 2 | G18745 | 6,800 |
| 608124012200 | PS007 | COM | 2018-01-05 | 2018-02-21 | 2018-06-05 | 47 | 3 | G18753 | 7,031 |
| 608124011801 | PS005 | COM | 2017-06-15 | 2017-09-04 | 2017-12-24 | 81 | 2 | G18753 | 7,034 |
| 608124011800 | PS005 | ST | 2017-05-16 | 2017-06-11 | 2017-06-15 | 26 | 2 | G18753 | 7,034 |
| 608114068500 | 001 | PA | 2017-05-08 | 2017-08-21 | 2017-08-29 | 105 | 3 | G35679 | 4,640 |
| 608124011400 | PS002 | COM | 2016-12-17 | 2017-02-12 | 2017-05-08 | 57 | 3 | G18753 | 7,039 |
| 608084005301 | 001 | PA | 2016-02-14 | 2016-03-10 | 2016-03-25 | 25 | 2 | G25804 | 6,574 |
Recent INCs
| Date | Kind | Region | Count |
|---|---|---|---|
| 2024-04-02 | fac_shutin | gulf | 1 |
| 2022-03-25 | shutin | gulf | 1 |
| 2021-12-21 | warning | gulf | 1 |
| 2021-09-09 | fac_shutin | gulf | 1 |
| 2021-08-26 | fac_shutin | gulf | 1 |
| 2021-01-22 | fac_shutin | gulf | 1 |
| 2018-05-01 | warning | gulf | 1 |
| 2018-03-02 | fac_shutin | gulf | 1 |
| 2018-02-01 | warning | gulf | 1 |
| 2018-01-25 | warning | gulf | 1 |
| 2017-12-14 | shutin | gulf | 1 |
| 2017-12-01 | warning | gulf | 1 |
| 2017-12-01 | shutin | gulf | 1 |
| 2017-12-01 | shutin | gulf | 1 |
| 2017-10-06 | warning | gulf | 3 |
| 2017-10-06 | shutin | gulf | 1 |
| 2017-10-06 | fac_shutin | gulf | 1 |
| 2017-07-11 | warning | gulf | 1 |
| 2017-07-11 | warning | gulf | 1 |
| 2017-02-23 | fac_shutin | gulf | 1 |
Recent APDs filed
| Status date | Well | Type | Lease | WD (ft) | Rig |
|---|---|---|---|---|---|
| 2026-07-01 | IS002 | BYPASS / E | G18753 | 7,035 | T.O. DEEPWATER CONQUEROR |
| 2026-06-18 | IS002 | REVISED NEW WELL / E | G18753 | 7,035 | T.O. DEEPWATER CONQUEROR |
| 2026-06-11 | IS002 | REVISED NEW WELL / E | G18753 | 7,035 | T.O. DEEPWATER CONQUEROR |
| 2026-06-01 | IS002 | REVISED NEW WELL / E | G18753 | 7,035 | T.O. DEEPWATER CONQUEROR |
| 2026-05-27 | IS002 | REVISED NEW WELL / E | G18753 | 7,035 | T.O. DEEPWATER CONQUEROR |
| 2026-05-13 | IS002 | REVISED NEW WELL / E | G18753 | 7,035 | T.O. DEEPWATER CONQUEROR |
| 2026-05-12 | PS009 | REVISED NEW WELL / E | G21245 | 7,039 | T.O. DEEPWATER CONQUEROR |
| 2026-05-08 | PS009 | REVISED NEW WELL / E | G21245 | 7,039 | T.O. DEEPWATER CONQUEROR |
| 2026-04-20 | PS009 | REVISED NEW WELL / E | G21245 | 7,039 | T.O. DEEPWATER CONQUEROR |
| 2026-04-15 | PS009 | REVISED NEW WELL / E | G21245 | 7,039 | T.O. DEEPWATER CONQUEROR |
| 2026-04-10 | PS009 | NEW WELL / E | G21245 | 7,039 | T.O. DEEPWATER CONQUEROR |
| 2026-03-24 | IS002 | NEW WELL / E | G18753 | 7,035 | T.O. DEEPWATER CONQUEROR |
| 2023-12-15 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |
| 2023-12-13 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |
| 2023-12-13 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |
| 2023-12-08 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |
| 2023-11-30 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |
| 2023-11-28 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |
| 2023-11-28 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |
| 2023-11-24 | PS008 | REVISED NEW WELL / E | G18753 | 7,036 | T.O. DEEPWATER CONQUEROR |