TEXAS · WELLS · HOWARD COUNTY · API 42-227-36473 · DISTRICT 7B
Chalk G. O. -D- #28
Howard County · Howard Glasscock (Consolidated) field · Producing · Vertical
Chalk G. O. -D- #28 (API 42-227-36473) is a well in Howard County operated by Citation Oil & Gas Corp., completed January 27, 2012 and listed as producing on the RRC schedule.
The RRC has issued 2 drilling permits between 2010 and 2011, permitted to 4,332 ft.
It was permitted by Conocophillips Company and has since transferred to Citation Oil & Gas Corp. on the wellbore schedule.
Completion filings report 9 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its 2 leases have reported 1.27M barrels of oil and 259K mcf of gas since January 1993, last reporting in July 2026. The leases carry 37 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Conocophillips Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 27, 2026
- Permits on file
- 866
- Phone
- (281) 891-1000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Citation Oil & Gas Corp.through Apr 2026 |
| Latest permit | Conocophillips CompanyOct 25, 2011 |
- 4,332
- total depth, ft
- 2
- permits on file
- Oct 25, 2011
- last permit issued
- Jan 27, 2012
- completed
- 1.27M
- cumulative oil, bbl
- 259K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 27, 2012
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 37 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Chalk, G. O. -D- O-10-41216 | Howard Glasscock (Consolidated) | Citation Oil & Gas Corp. | 32 | 1.12M | 252K | Dec 2011 – Jul 2026 |
| Chalk, G. O. -D- O-10-22055 | Howard Glasscock (Clear Fork,mi) | Conocophillips Company | 5 | 157K | 7.1K | Jan 1993 – Apr 2012 |
Oil, barrels lease total
Last 12 months 46,906 · prior 12 47,318(-1%)
Gas, mcf lease total
Last 12 months 14,244 · prior 12 15,988(-11%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Conoco Inc.Jan 1993 → Dec 2002
- 2Conocophillips CompanyJan 2003 → Jan 2018
- 3Citation Oil & Gas Corp.Feb 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 724771-99 | Recompletion | Conocophillips Company | Sep 21, 2011 | Oct 25, 2011 | — | 4,600 |
| 701294-99 | Drill | Conocophillips Company | Aug 26, 2010 | Sep 22, 2010 | Mar 10, 2011 | 4,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 27, 2012 | Chalk G. O. -D- O-10-41216 | Howard Glasscock (Consolidated) | Citation Oil & Gas Corp. | Producing | 4,332 |
| May 9, 2011 | Chalk G. O. -D- O-10-22055 | Howard Glasscock (Clear Fork MI) | Conocophillips Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,617 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,382 | 1,235 |
| Seven Rivers | 1,474 | 1,143 |
| Queen | 1,677 | 940 |
| Grayburg | 1,978 | 639 |
| San Andres | 2,278 | 339 |
| Glorieta | 2,810 | -193 |
| Clear ForkCLEARFORK | 3,142 | -525 |
| Tubb | 3,726 | -1,109 |
| Tubb | 3,729 | -1,112 |
| Wichita-AlbanyWICHITA ALBANY | 4,260 | -1,643 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,506 | 1,625 | Perforated |
| 1,795 | 1,880 | Perforated |
| 2,244 | 2,261 | Perforated |
| 2,285 | 2,415 | Perforated |
| 2,480 | 2,665 | Perforated |
| 2,743 | 2,780 | Perforated |
| 2,826 | 3,085 | Perforated |
| 3,158 | 3,691 | Perforated |
| 3,763 | 4,211 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,213 | 12.25 | 600 S |
| 5.5 | 4,320 | 7.875 | 800 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 | Apr 29, 2013 | Mar 29, 2012 | — |
| 00 | Mar 29, 2012 | Jul 10, 2011 | Yes |
| 00 | Mar 27, 2012 | Jul 10, 2011 | Yes |
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 42-227-36473 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-36473 → 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.
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/22736473, documented in the API reference.