Shidler Mark L
Operator of record for 27 catalogued wells across 3 states. Every well below links to its full registry page.
Filed as: SHIDLER, MARK L., INC. · Shidler, Mark L., Inc.
At a glance
Shidler Mark L is the operator of record for 27 catalogued U.S. oil & gas wells in 3 states. 13 (48%) are active, 14 (52%) plugged & abandoned. Its largest concentration is in Texas, with 21 wells (78% of its portfolio).
Wells operated
27
Active
13
Plugged
14
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Texas | 21 |
| Arkansas | 4 |
| Mississippi | 2 |
Well mix
- Oil wells
- 13
- Gas wells
- 11
- Shut-in
- 0
- Active share
- 48%
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Claim your operator profileWhere does Shidler Mark L operate?
Shidler Mark L's catalogued wells are spread across 3 states: Texas (21), Arkansas (4) and Mississippi (2). Its 4 Arkansas wells are 0.0% of the 33,791 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 (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Shidler Mark L’s wells are active, plugged or orphaned?
48% of Shidler Mark L's catalogued wells are active, 18 percentage points above the national share of 30%. 52% are plugged & abandoned, against 48% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Shidler Mark L operate?
By product class, 13 (48%) are oil wells and 11 (41%) gas wells; nationally the shares are 45% and 18%. The deepest of its wells with a published depth is Well API 42-177-32080 in Gonzales, TX at 11,320 ft. The wells listed below sit in Gonzales (TX), Zapata (TX), Johnson (TX), Hansford (TX), Ouachita (AR) and Amite (MS) and other counties. 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 Shidler Mark L
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Well API 42-177-32080 | 42-177-32080 | Active | Oil | Gonzales, TX | Shidler, Mark L., Inc. | 11,320 ft |
| Well API 42-505-32838 | 42-505-32838 | Plugged & abandoned | Gas | Zapata, TX | Shidler, Mark L., Inc. | 9,500 ft |
| Well API 42-177-31849 | 42-177-31849 | Active | Oil | Gonzales, TX | Shidler, Mark L., Inc. | 8,235 ft |
| Well API 42-251-30511 | 42-251-30511 | Active | Gas | Johnson, TX | Shidler, Mark L., Inc. | 8,149 ft |
| Well API 42-251-30231 | 42-251-30231 | Active | Gas | Johnson, TX | Shidler, Mark L., Inc. | 8,028 ft |
| Well API 42-195-30950 | 42-195-30950 | Active | Gas | Hansford, TX | Shidler, Mark L., Inc. | 6,900 ft |
| Wilson 1 | 03-103-11134 | Active | Oil | Ouachita, AR | Shidler, Mark L., Inc. | 6,000 ft |
| Wilson 2 | 03-103-10955 | Active | Injection | Ouachita, AR | Shidler, Mark L., Inc. | 5,843 ft |
| Warren 1 | 03-103-11142 | Active | Oil | Ouachita, AR | Shidler, Mark L., Inc. | 5,816 ft |
| Wilson "A" 1 | 03-103-11232 | Active | Oil | Ouachita, AR | Shidler, Mark L., Inc. | 5,754 ft |
| Fields Elizabeth O 2 2 | 23-005-20580 | Plugged & abandoned | Gas | Amite, MS | Shidler, Mark L., Inc. | 5,010 ft |
| Well API 42-253-35376 | 42-253-35376 | Active | Oil | Jones, TX | Shidler, Mark L., Inc. | 4,054 ft |
Deepest first where depth is published. See all 27 wells →
Frequently asked questions
How many wells does Shidler Mark L operate?
Shidler Mark L is the operator of record for 27 catalogued oil & gas wells, with the largest concentration in Texas (21). Only wells in states WellCensus has ingested are counted.
How many of Shidler Mark L's wells are still active?
13 of Shidler Mark L's catalogued wells are active; 14 are plugged & abandoned.
In which states does Shidler Mark L operate wells?
Shidler Mark L is the operator of record for wells in Texas (21), Arkansas (4) and Mississippi (2).
Does Shidler Mark L operate mostly oil or gas wells?
13 of Shidler Mark L's catalogued wells are oil wells and 11 are gas wells; the rest are injection, service or unclassified wells.
What is Shidler Mark L's deepest well?
Among wells with a published depth, Well API 42-177-32080 in Gonzales, TX is the deepest at 11,320 ft.
Where Shidler Mark L'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 28, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Shidler Mark L — well portfolio”, https://wellcensus.com/operators/shidler-mark-l-136783 (data as of October 28, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).