WELL · 42-227-34537 · DISTRICT 8
Chalk G. O.-G- #52W
Howard County · Howard Glasscock (Consolidated) field · Injection · Vertical
Chalk G. O.-G- #52W (API 42-227-34537) is a well in Howard County operated by Citation Oil & Gas Corp., completed November 2, 2010 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued March 20, 1990, permitted to 3,900 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 7 formation tops, including Yates, Seven Rivers, Queen, San Andres.
Its 2 leases have reported 542K barrels of oil and 148K 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 an active disposal or injection permit, with 519K barrels injected in the 12 months reported through December 2025.
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
- 866
- Phone
- (281) 891-1000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Conocophillips Company |
| Production reports | Citation Oil & Gas Corp.through Apr 2026 |
| Latest permit | Mobil Producing TX. & N.M. Inc.Mar 20, 1990 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 3,900
- total depth, ft
- 1
- permits on file
- Mar 20, 1990
- last permit issued
- Nov 2, 2010
- completed
- 542K
- cumulative oil, bbl
- 148K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 2, 2010
- 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 43 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 – Jul 2026 |
| Chalk, G. O. -G- O-10-22056 | Howard Glasscock (Clear Fork,mi) | Conocophillips Company | 5 | 46.5K | 7.36K | Jan 1993 – Sep 2012 |
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 |
|---|---|---|---|---|---|---|
| 370815-99 | Drill | Mobil Producing TX. & N.M. Inc. | Mar 12, 1990 | Mar 20, 1990 | May 2, 1990 | 3,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 2, 2010 | Chalk G. O.-G- O-10-41220 | Howard Glasscock (Consolidated) | Citation Oil & Gas Corp. | Injection | 3,900 |
| Nov 2, 2010 | Chalk G. O. -G- O-10-22056 | Howard Glasscock (Clear Fork MI) | Conocophillips Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,452 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,223 | 1,229 |
| Seven Rivers7 RIVERS | 1,308 | 1,144 |
| Queen | 1,522 | 930 |
| San Andres | 1,901 | 551 |
| San Andres | 2,092 | 360 |
| GlorietaGLORIETTA | 2,504 | -52 |
| Glorieta | 2,614 | -162 |
| Clear Fork | 2,948 | -496 |
| Clear ForkCLEARFORK | 2,948 | -496 |
| Tubb | 3,564 | -1,112 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,061 | 3,065 | Perforated |
| 3,061 | 3,598 | Perforated |
| 3,137 | 3,142 | Perforated |
| 3,583 | 3,598 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 418 | 12.25 | 300 S |
| 5.5 | 3,890 | 7.875 | 900 S |
| 5.5 | 3,900 | 7.875 | 900 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 | Mar 1, 2012 | Nov 29, 2010 | — |
| 00 | Mar 9, 2011 | Nov 29, 2010 | — |
| 00 | Oct 9, 1990 | Aug 30, 1990 | Yes |
| 00 | Sep 19, 1990 | — | — |
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 42-227-34537 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-34537 → 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
- 519K
- bbl, last 12 reported months
- 7.7M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000072848 | H-1 Injection | Active | 2,000 | 1,500 | 3,000–3,800 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 519,431 · prior 12 616,109(-16%)
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/22734537, documented in the API reference.