WELL · 42-235-36262 · DISTRICT 7
Mayer #4502WB
Irion County · Lin (Wolfcamp) field · Producing · Horizontal
Mayer #4502WB (API 42-235-36262) is a horizontal well in Irion County operated by Sem Operating Company LLC, completed October 3, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued April 17, 2018, permitted to 10,000 ft.
Completion filings report 7 formation tops, including Grayburg, San Andres, Clear Fork, Spraberry.
Its lease has reported 3.34M barrels of oil and 57.7M mcf of gas since September 2011, last reporting in July 2026. The lease carries 35 wells, so these are lease totals, not this well alone.
Operator of record
Houston, TX · P-5 Y, filed Apr 4, 2026 · 404 permits on file · (877) 447-2289
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sem Operating Company LLC |
| Production reports | Sem Operating Company LLCthrough Apr 2026 |
| Latest permit | Sem Operating Company LLCApr 17, 2018 |
- 10,000
- total depth, ft
- 2
- permits on file
- Apr 17, 2018
- last permit issued
- Oct 3, 2018
- completed
- 3.34M
- cumulative oil, bbl
- 57.7M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 3, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
31.153768, -101.169017
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Irion County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 35 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mayer O-9-17681 | Lin (Wolfcamp) | Sem Operating Company LLC | 35 | 3.34M | 57.7M | Sep 2011 – Jul 2026 |
Gas, mcf lease total
Last 12 months 4,330,570 · prior 12 4,617,320(-6%)
Oil, barrels lease total
Last 12 months 64,728 · prior 12 84,747(-24%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1EOG Resources, Inc.Sep 2011 → May 2016
- 2Sem Operating Company LLCJun 2016 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 838281-98 | Drill | Sem Operating Company LLC | May 17, 2018 | Apr 17, 2018 | May 13, 2018 | 10,000 |
| 838281-99 | Drill | Sem Operating Company LLC | Apr 2, 2018 | Apr 17, 2018 | May 13, 2018 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-17681 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,607 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Grayburg | 1,500 | 1,107 |
| San Andres | 2,000 | 607 |
| Clear ForkCLEARFORK | 4,400 | -1,793 |
| Spraberry | 4,700 | -2,093 |
| Wolfcamp | 6,420 | -3,813 |
| Canyon | — | — |
| Fusselman | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,878 | 14,932 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 801 | 12.25 | 500 S |
| 5.5 | 15,041 | 8.75 | 2,980 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 2, 2019 | Dec 6, 2018 | 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 42-235-36262 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-235-36262 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Mayer42-235-36261
0.0 KM · Sem Operating Company LLC · Section with this well →
| Grayburg | 1,500 | 1,149 |
| San Andres | 2,000 | 649 |
| Clear Fork | 4,400 | -1,751 |
| Spraberry | 4,700 | -2,051 |
| Wolfcamp | 6,905 | -4,256 |
| Fusselman | — | |
| Canyon | — |
Mayer A42-235-36511
0.6 KM · Sem Operating Company LLC · Section with this well →
| Yates | 1,062 | 1,566 |
| San Andres | 2,564 | 64 |
| Clear Fork | 3,694 | -1,066 |
| Spraberry | 5,685 | -3,057 |
| Wolfcamp | 6,995 | -4,367 |
| Grayburg | — | |
| Fusselman | — | |
| Canyon | — |
Mayer A42-235-36509
0.6 KM · Sem Operating Company LLC · Section with this well →
| Yates | 1,069 | 1,559 |
| San Andres | 2,571 | 57 |
| Clear Fork | 3,701 | -1,073 |
| Spraberry | 5,692 | -3,064 |
| Wolfcamp | 6,567 | -3,939 |
| Fusselman | — | |
| Canyon | — | |
| Grayburg | — |
Mayer A42-235-36510
0.6 KM · Sem Operating Company LLC · Section with this well →
| Yates | 1,062 | 1,567 |
| San Andres | 2,564 | 65 |
| Clear Fork | 3,694 | -1,065 |
| Spraberry | 4,759 | -2,130 |
| Wolfcamp | 6,995 | -4,366 |
| Canyon | — | |
| Fusselman | — | |
| Grayburg | — |
Mayer A142-235-36512
0.6 KM · Sem Operating Company LLC · Section with this well →
| Yates | 876 | 1,753 |
| San Andres | 2,570 | 59 |
| Clear Fork | 3,700 | -1,071 |
| Spraberry | 5,691 | -3,062 |
| Wolfcamp | 6,566 | -3,937 |
| Grayburg | — | |
| Fusselman | — | |
| Canyon | — |
Mayer42-235-36450
0.8 KM · Sem Operating Company LLC · Section with this well →
| Grayburg | 1,088 | 1,581 |
| San Andres | 1,962 | 707 |
| Clear Fork | 3,680 | -1,011 |
| Spraberry | 4,797 | -2,128 |
| Wolfcamp | 6,982 | -4,313 |
| Fusselman | — | |
| Canyon | — |
Mayer42-235-36390
1.4 KM · Sem Operating Company LLC · Section with this well →
| Grayburg | 913 | 1,726 |
| San Andres | 1,787 | 852 |
| Clear Fork | 3,505 | -866 |
| Spraberry | 4,645 | -2,006 |
| Wolfcamp | 6,108 | -3,469 |
| Fusselman | — | |
| Canyon | — |
Mayer42-235-36389
1.4 KM · Sem Operating Company LLC · Section with this well →
| Grayburg | 913 | 1,726 |
| San Andres | 1,787 | 852 |
| Clear Fork | 3,505 | -866 |
| Spraberry | 4,645 | -2,006 |
| Wolfcamp | 6,108 | -3,469 |
| Fusselman | — | |
| Canyon | — |
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/23536262, documented in the API reference.