WELL · 42-227-35716 · DISTRICT 8
Chalk Otis #20W
Howard County · Howard-Glasscock (Glorieta) field · Vertical
Chalk Otis #20W (API 42-227-35716) is a well in Howard County operated by Apache Corporation, completed January 23, 2002.
The RRC has issued one drilling permit, issued June 7, 2001, permitted to 3,400 ft.
It was permitted by Westport Oil And Gas Company Inc and has since transferred to Apache Corporation on the wellbore schedule.
Completion filings report 5 formation tops, including Yates, Seven Rivers, Queen, San Andres.
Its 2 leases have reported 1.1M barrels of oil and 333K mcf of gas since January 1993, last reporting in July 2026. The leases carry 43 wells, so these are lease totals, not this well alone.
It holds 2 active disposal or injection permits, with 23.1K barrels injected in the 12 months reported through December 2025.
Operator of record
Permitted by Westport Oil and Gas Company Inc; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Oct 4, 2025 · 9,754 permits on file · (713) 296-6400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Apache Corporation |
| Production reports | Apache Corporationthrough Apr 2026 |
| Latest permit | Westport Oil and Gas Company IncJun 7, 2001 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,400
- total depth, ft
- 1
- permits on file
- Jun 7, 2001
- last permit issued
- Jan 23, 2002
- completed
- 1.1M
- cumulative oil, bbl
- 333K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 23, 2002
- Shut in
- —
- Plugged
- —
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 43 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Chalk, Otis O-10-46457 | Howard Glasscock (Consolidated) | Apache Corporation | 23 | 297K | 71.6K | Dec 2011 – Jul 2026 |
| Chalk, Otis O-10-18996 | Howard-Glasscock (Glorieta) | Apache Corporation | 20 | 798K | 261K | Jan 1993 – Oct 2015 |
Oil, barrels lease total
Last 12 months 7,699 · prior 12 1,451(+431%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chevron U. S. A. Inc.Jan 1993 → Jun 1995
- 2Westport Oil and Gas Company IncJul 1995 → Feb 2002
- 3Westport Oil and Gas Company, LPMar 2002 → Feb 2006
- 4Kerr-McGee Oil & Gas Onshore LPMar 2006 → Mar 2007
- 5Apache CorporationApr 2007 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 509518-99 | Drill | Westport Oil and Gas Company Inc | May 29, 2001 | Jun 7, 2001 | Oct 26, 2001 | 3,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-18996 | — | — | — | — |
| — | — O-10-46457 | — | — | — | — |
| — | — O-10-46457 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,692 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,408 | 1,284 |
| Seven Rivers | 1,499 | 1,193 |
| Queen | 1,678 | 1,014 |
| San Andres | 2,188 | 504 |
| Glorieta | 2,836 | -144 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,190 | 2,594 | Perforated |
| 2,888 | 3,150 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 363 | 12.25 | 350 S |
| 7 | 3,400 | 8.75 | 465 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 17, 2017 | May 9, 2017 | — |
| 00 | Sep 15, 2015 | Aug 3, 2015 | — |
| 00 | Jul 17, 2015 | Feb 28, 2002 | Yes |
| 00 | Jun 24, 2002 | Feb 28, 2002 | Yes |
| 00 | May 22, 2002 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-227-35716 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-35716 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 23.1K
- bbl, last 12 reported months
- 3.91M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000091749 | H-1 Injection | Active | 1,500 | 1,050 | 2,150–2,700 |
| 000091750 | H-1 Injection | Active | 1,500 | 1,050 | 2,700–3,400 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 23,144 · prior 12 1,870(+1138%)
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/22735716, documented in the API reference.