Mark L Shidler
Operator of record for 36 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: MARK L SHIDLER INC · MARK L SHIDLER, INC.
At a glance
Mark L Shidler is the operator of record for 36 catalogued U.S. oil & gas wells in 3 states. 18 (50%) are active, 12 (33%) plugged & abandoned and 1 flagged as orphaned. Its largest concentration is in Oklahoma, with 18 wells (50% of its portfolio).
Wells operated
36
Active
18
Plugged
12
Orphaned
1
Portfolio by state
| State | Wells |
|---|---|
| Oklahoma | 18 |
| Louisiana | 12 |
| New Mexico | 6 |
Well mix
- Oil wells
- 14
- Gas wells
- 12
- Shut-in
- 3
- Active share
- 50%
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Claim your operator profileWhere does Mark L Shidler operate?
Mark L Shidler's catalogued wells are spread across 3 states: Oklahoma (18), Louisiana (12) and New Mexico (6). Its 12 Louisiana wells are 0.0% of the 225,728 catalogued in that state — its largest share of any state. Counts cover only states whose registries WellCensus has ingested with operator names; wells in Nebraska and Texas (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Mark L Shidler’s wells are active, plugged or orphaned?
50% of Mark L Shidler's catalogued wells are active, 21 percentage points above the national share of 29%. 33% are plugged & abandoned, against 47% nationally. 3 wells (8%) are shut-in — unplugged but idle. 1 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Mark L Shidler operate?
By product class, 14 (39%) are oil wells and 12 (33%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Cv Rb Sub;davis Heirs 001 in Jackson, LA at 14,100 ft. The wells listed below sit in Jackson (LA), St Landry (LA), Lea (NM), Vermilion (LA), Webster (LA) and St Mary (LA). State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Mark L Shidler
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Cv Rb Sub;davis Heirs 001 | 17-049-20265 | Active | Gas | Jackson, LA | Mark L Shidler, Inc. | 14,100 ft |
| Wx Ra Sub;lahaye 001 | 17-097-21004 | Plugged & abandoned | Other type | St Landry, LA | Mark L Shidler, Inc. | 14,050 ft |
| State 1-30 #001 | 30-025-08441 | Plugged & abandoned | Oil | Lea, NM | Mark L Shidler Inc | 13,002 ft |
| State #001 | 30-025-20419 | Plugged & abandoned | Oil | Lea, NM | Mark L Shidler Inc | 10,543 ft |
| Hoss Ra Suu;williamette A 001 | 17-049-20243 | Plugged & abandoned | Other type | Jackson, LA | Mark L Shidler, Inc. | 10,200 ft |
| L Demary Et Al Swd 001 | 17-113-20938 | Plugged & abandoned | Other type | Vermilion, LA | Mark L Shidler, Inc. | 7,738 ft |
| Elk State #001 | 30-025-22368 | Plugged & abandoned | Oil | Lea, NM | Mark L Shidler Inc | 7,316 ft |
| Purity Mott 001-D | 17-119-01542 | Other status | Other type | Webster, LA | Mark L Shidler, Inc. | 7,106 ft |
| Shore Oil Corporation 002 | 17-101-21237 | Plugged & abandoned | Other type | St Mary, LA | Mark L Shidler, Inc. | 6,480 ft |
| L James Suf;willamette Ind Inc 001 | 17-049-20111 | Shut-in | Gas | Jackson, LA | Mark L Shidler, Inc. | 6,206 ft |
| L James Sud;o B Clinton 001 | 17-049-20105 | Shut-in | Gas | Jackson, LA | Mark L Shidler, Inc. | 6,150 ft |
| Elk State #003 | 30-025-22697 | Plugged & abandoned | Oil | Lea, NM | Mark L Shidler Inc | 6,092 ft |
Deepest first where depth is published. See all 36 wells →
Frequently asked questions
How many wells does Mark L Shidler operate?
Mark L Shidler is the operator of record for 36 catalogued oil & gas wells, with the largest concentration in Oklahoma (18). Only wells in states WellCensus has ingested are counted.
How many of Mark L Shidler's wells are still active?
18 of Mark L Shidler's catalogued wells are active; 12 are plugged & abandoned and 1 are flagged as orphaned.
In which states does Mark L Shidler operate wells?
Mark L Shidler is the operator of record for wells in Oklahoma (18), Louisiana (12) and New Mexico (6).
Does Mark L Shidler operate mostly oil or gas wells?
14 of Mark L Shidler's catalogued wells are oil wells and 12 are gas wells; the rest are injection, service or unclassified wells.
What is Mark L Shidler's deepest well?
Among wells with a published depth, Cv Rb Sub;davis Heirs 001 in Jackson, LA is the deepest at 14,100 ft.
Where Mark L Shidler's wells are
About this data
Source: State oil & gas regulator registries (operator of record as filed, exact-normalized across states) plus the USGS United States Documented Orphaned Well Database (2026), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Mark L Shidler — well portfolio”, https://wellcensus.com/operators/mark-l-shidler-4023 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).