TEXAS · WELLS · JOHNSON COUNTY · MAYFLY EMERGER LEASE · API 42-251-31668 · DISTRICT 7C
Mayfly Emerger #7H
Johnson County · Newark East (Barnett Shale) field · Producing · Horizontal
Mayfly Emerger #7H (API 42-251-31668) is a horizontal well in Johnson County operated by Tep Barnett USA LLC, completed June 30, 2007 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 6, 2007, permitted to 6,467 ft.
It was permitted by Chesapeake Operating, Inc. and has since transferred to Tep Barnett USA LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Atoka, Barnett.
Its lease has reported 1.41M mcf of gas since June 2007, last reporting volume in June 2025.
Operator of record
Permitted by Chesapeake Operating, Inc.; the EWA schedule now lists a different operator.
- Based in
- Fort Worth, TX
- P-5 status
- Active (A)
- P-5 last filed
- Apr 10, 2026
- Permits on file
- 371
- Phone
- (817) 720-1100
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | TEP Barnett USA LLC |
| Production reports | TEP Barnett USA, LLCthrough Jun 2025 |
| Latest permit | Chesapeake Operating, Inc.Apr 6, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,467
- total depth, ft
- 1
- permits on file
- Apr 6, 2007
- last permit issued
- Jun 30, 2007
- completed
- 0
- cumulative oil, bbl
- 1.41M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · JUN 2007 THROUGH JUN 2025
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 30, 2007
- 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.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH AUG 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mayfly Emerger G-13-231575 | Newark, East (Barnett Shale) | TEP Barnett USA, LLC | 1 | 0 | 1.41M | Jun 2007 – Jun 2025 |
Gas, mcf lease total
Last 12 months 0 · prior 12 28,335(-100%)
Wells named Mayfly Emerger
TEP Barnett USA LLC's other wells filed under this lease name in Johnson County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Operator on the lease's P-4
Each operator named on the P-4 filings for this well's lease (a gas well is its own lease), from the date its filing took effect. The P-4 is filed by lease, so a date before the well was drilled is the lease's.
| Operator | From | To |
|---|---|---|
| TEP Barnett USA, LLC | Aug 1, 2017 | today |
| Chesapeake Operating, L.L.C. | Nov 1, 2014 | Aug 1, 2017 |
| Chesapeake Operating, Inc. | Jun 30, 2007 | Nov 1, 2014 |
Reporting production
Every operator that reported production on this well's lease, in order.
- 1Chesapeake Operating, Inc.Jun 2007 → Oct 2014
- 2Chesapeake Operating, L.L.C.Nov 2014 → Jul 2017
- 3TEP Barnett USA, LLCAug 2017 → Jun 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 636299-99 | Drill | Chesapeake Operating, Inc. | Mar 30, 2007 | Apr 6, 2007 | Apr 14, 2007 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 30, 2007 | Mayfly Emerger G-13-231575 | Newark East (Barnett Shale) | TEP Barnett USA LLC | Producing | 6,467 |
Formation tops
As filed on W-2/G-1. Subsea from 897 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,889 | 7,597 | Perforated |
| 7,896 | 8,603 | Perforated |
| 8,902 | 9,610 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,201 | 12.25 | 450 S |
| 5.5 | 9,711 | 8.75 | 1,290 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 | Jan 7, 2008 | Aug 30, 2007 | Yes |
| 00 | Dec 18, 2007 | — | — |
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 42-251-31668 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-251-31668 → 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/25131668, documented in the API reference.