WELL · 42-127-37479 · DISTRICT 1
Big Wells South Dim #O 1H
Dimmit County · Briscoe Ranch (Eagleford) field · Producing · Horizontal
Big Wells South Dim #O 1H (API 42-127-37479) is a horizontal well in Dimmit County operated by Ineos USA Oil & Gas LLC, completed October 19, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued March 28, 2017, permitted to 9,000 ft.
It was permitted by Chesapeake Operating, L.L.C. and has since transferred to Ineos USA Oil & Gas LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Escondido, Olmos, San Miguel, Anacacho.
Its lease has reported 3.79M barrels of oil and 7.07M mcf of gas since September 2011, last reporting in July 2026. The lease carries 19 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Chesapeake Operating, L.L.C.; the EWA schedule now lists a different operator.
Denver, CO · P-5 Y, filed Apr 4, 2026 · 98 permits on file · (833) 402-7779
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ineos USA Oil & Gas LLC |
| Production reports | Ineos USA Oil & Gas LLCthrough Apr 2026 |
| Latest permit | Chesapeake Operating, L.L.C.Mar 28, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 2
- permits on file
- Mar 28, 2017
- last permit issued
- Oct 19, 2018
- completed
- 3.79M
- cumulative oil, bbl
- 7.07M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 19, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
28.510526, -99.517185
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Dimmit 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 19 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Big Wells South Dim O-1-15593 | Briscoe Ranch (Eagleford) | Ineos USA Oil & Gas LLC | 19 | 3.79M | 7.07M | Sep 2011 – Jul 2026 |
Oil, barrels lease total
Last 12 months 97,811 · prior 12 122,485(-20%)
Gas, mcf lease total
Last 12 months 461,684 · prior 12 346,685(+33%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chesapeake Operating, Inc.Feb 2012 → Oct 2014
- 2Chesapeake Operating, L.L.C.Nov 2014 → Mar 2023
- 3Ineos USA Oil & Gas LLCApr 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 824487-98 | Drill | Chesapeake Operating, L.L.C. | May 18, 2018 | Mar 28, 2017 | Aug 31, 2018 | 9,000 |
| 824487-99 | Drill | Chesapeake Operating, L.L.C. | Mar 14, 2017 | Mar 28, 2017 | — | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-15593 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 508 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| EscondidoESCONDIDO - DISPOSAL | 3,512 | -3,004 |
| OlmosOLMOS - DISPOSAL | 4,639 | -4,131 |
| San MiguelSAN MIGUEL - H2S | 5,561 | -5,053 |
| Anacacho | 6,379 | -5,871 |
| Austin ChalkAUSTIN CHALK - H2S | 6,641 | -6,133 |
| Eagle FordEAGLE FORD - H2S | 7,126 | -6,618 |
| EdwardsEDWARDS - H2S | — | — |
| GeorgetownGEORGETOWN - H2S | — | — |
| Glen RoseGLEN ROSE - DISPOSAL | — | — |
| Pearsall | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,508 | 14,456 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,466 | 12.25 | 740 S |
| 5.5 | 14,563 | 8.75 | 2,145 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 | Feb 27, 2019 | Jan 17, 2019 | 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 42-127-37479 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-127-37479 → 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.
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.
North Rogers Q East Unit42-127-38441
0.5 KM · Chesapeake Operating, L.L.C. · Section with this well →
| Austin Chalk | — | |
| San Miguel | — | |
| Pearsall | — | |
| Olmos | — | |
| Glen Rose | — | |
| Georgetown | — | |
| Escondido | — | |
| Edwards | — |
9 TOPS · FIRST 8
North Rogers Unit IX42-127-37744
0.5 KM · Chesapeake Operating, L.L.C. · Section with this well →
| Escondido | 3,521 | -3,006 |
| Olmos | 4,642 | -4,127 |
| San Miguel | 5,544 | -5,029 |
| Anacacho | 6,386 | -5,871 |
| Austin Chalk | 6,649 | -6,134 |
| Eagle Ford | 7,137 | -6,622 |
| Pearsall | — | |
| Edwards | — |
10 TOPS · FIRST 8
North Rogers Unit Viii42-127-37746
0.5 KM · Chesapeake Operating, L.L.C. · Section with this well →
| Escondido | 3,533 | -3,019 |
| Olmos | 4,652 | -4,138 |
| San Miguel | 5,546 | -5,032 |
| Anacacho | 6,403 | -5,889 |
| Austin Chalk | 6,658 | -6,144 |
| Eagle Ford | 7,145 | -6,631 |
| Pearsall | — | |
| Edwards | — |
10 TOPS · FIRST 8
McLean-Bowman -B-42-127-30170
0.6 KM · Whittier Operating Inc · Section with this well →
| Bottom Wilcox | 3,075 | -2,593 |
| Bottom Escondido | 3,710 | -3,228 |
| San Miguel | 5,529 | -5,047 |
McLean-Bowman -B-42-127-30366
0.6 KM · Unitex Oil & Gas, L.L.C. · Section with this well →
| Bottom Wilcox | 3,100 | -2,618 |
| Bottom Escondido | 3,750 | -3,268 |
MB Adams42-127-36043
0.7 KM · Spri Oil & Gas, LLC · Section with this well →
| Escondido | 3,500 | -3,488 |
| Olmos | 4,750 | -4,738 |
| San Miguel | 5,550 | -5,538 |
| Glen Rose | — | |
| Austin Chalk | — | |
| Eagle Ford | — | |
| Edwards | — | |
| Georgetown | — |
9 TOPS · FIRST 8
North Rogers Unit VII42-127-37749
0.8 KM · Chesapeake Operating, L.L.C. · Section with this well →
| Escondido | 3,567 | -3,040 |
| Olmos | 4,690 | -4,163 |
| San Miguel | 5,594 | -5,067 |
| Anacacho | 6,416 | -5,889 |
| Austin Chalk | 6,681 | -6,154 |
| Eagle Ford | 7,167 | -6,640 |
| Glen Rose | — | |
| Edwards | — |
10 TOPS · FIRST 8
North Rogers Unit VI42-127-37748
0.8 KM · Chesapeake Operating, L.L.C. · Section with this well →
| Escondido | 3,578 | -3,051 |
| Olmos | 4,706 | -4,179 |
| San Miguel | 5,608 | -5,081 |
| Anacacho | 6,433 | -5,906 |
| Austin Chalk | 6,697 | -6,170 |
| Eagle Ford | 7,177 | -6,650 |
| Glen Rose | — | |
| Pearsall | — |
10 TOPS · FIRST 8
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/12737479, documented in the API reference.