TEXAS · WELLS · HOWARD COUNTY · API 42-227-34091 · DISTRICT 7B
Chalk G. O.-G- #41
Howard County · Howard Glasscock (Consolidated) field · Shut In · Vertical
- Permitted field
- Howard Glasscock
Chalk G. O.-G- #41 (API 42-227-34091) is a well in Howard County operated by Citation Oil & Gas Corp., completed March 6, 2017 and listed as shut in on the RRC schedule, shut in March 1, 2017.
The RRC has issued one drilling permit, issued November 7, 1986, permitted to 2,507 ft.
It was permitted by Mobil Producing TX. & N.M. Inc. and has since transferred to Citation Oil & Gas Corp. on the wellbore schedule.
Completion filings report 5 formation tops, including Yates, Seven Rivers, Queen, Grayburg.
Its 2 leases have reported 782K barrels of oil and 199K mcf of gas since January 1993, last reporting volume in April 2026. The leases carry 60 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mobil Producing TX. & N.M. Inc.; 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
- 867
- Phone
- (281) 891-1000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Citation Oil & Gas Corp. |
| Production reports | Citation Oil & Gas Corp.through Apr 2026 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Nov 7, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,507
- total depth, ft
- 1
- permits on file
- Nov 7, 1986
- last permit issued
- Mar 6, 2017
- completed
- 782K
- cumulative oil, bbl
- 199K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 6, 2017
- Shut in
- Mar 1, 2017
- 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 60 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Chalk, G. O.-G- O-10-41220 | Howard Glasscock (Consolidated) | Citation Oil & Gas Corp. | 38 | 496K | 140K | Dec 2011 – Apr 2026 |
| Chalk, G. O. -G- O-10-2762 | Howard Glasscock | Conocophillips Company | 22 | 286K | 59.1K | Jan 1993 – Nov 2011 |
Oil, barrels lease total
Last 12 months 22,677 · prior 12 25,105(-10%)
Gas, mcf lease total
Last 12 months 7,381 · prior 12 8,573(-14%)
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 |
|---|---|---|---|---|---|---|
| 322851-99 | Drill | Mobil Producing TX. & N.M. Inc. | Nov 7, 1986 | Nov 7, 1986 | Nov 10, 1986 | 2,600 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 6, 2017 | Chalk G. O.-G- O-10-41220 | Howard Glasscock (Consolidated) | Citation Oil & Gas Corp. | Shut In · shut in Mar 1, 2017 | 2,507 |
| Dec 24, 1986 | Chalk G. O. -G- O-10-2762 | Howard Glasscock | Conocophillips Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,427 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,198 | 1,229 |
| Seven Rivers | 1,284 | 1,143 |
| Queen | 1,505 | 922 |
| Grayburg | 1,776 | 651 |
| San Andres | 1,882 | 545 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,052 | 2,184 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 242 | 12.25 | 160 S |
| 5.5 | 2,500 | 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Apr 21, 2017 | Apr 19, 2017 | — |
| 00 | Mar 1, 2012 | Apr 27, 1987 | Yes |
| 00 | May 13, 1987 | Apr 27, 1987 | Yes |
| 00 | May 5, 1987 | — | — |
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 42-227-34091 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-34091 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/22734091, documented in the API reference.