TEXAS · WELLS · HEMPHILL COUNTY · YOUNG 66 LEASE · API 42-211-34152 · DISTRICT 08

Young 66 #20 H

Y

Hemphill County · Hemphill (Granite Wash Lower) field · Producing  · Horizontal

Young 66 #20 H (API 42-211-34152) is a horizontal well in Hemphill County operated by Mmgl Txph LLC, completed August 6, 2008 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued March 25, 2008, permitted to 11,691 ft.

It was permitted by Devon Energy Production CO, L.P. and has since transferred to Mmgl Txph LLC on the wellbore schedule.

Completion filings report one formation top, including Granite Wash.

Its lease has reported 43K barrels of oil and 2M mcf of gas since August 2008, last reporting volume in April 2026.

Operator of record

Mmgl Txph LLC

Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.

Based in
Dallas, TX
P-5 status
Active (A)
P-5 last filed
Jul 24, 2025
Permits on file
10
Phone
(972) 701-8377

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore scheduleMmgl Txph LLC
Production reportsMmgl Txph, LLCthrough Apr 2026
Latest permitDevon Energy Production Co, L.P.Mar 25, 2008

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

11,691
total depth, ft
1
permits on file
Mar 25, 2008
last permit issued
Aug 6, 2008
completed
43K
cumulative oil, bbl
2M
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Aug 2008 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule
ON SCHEDULE
Completed
Aug 6, 2008
Shut in
—
Plugged
—

Operator's P-5 on the schedule: Active – Extension (X)

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 lease this well is completed on; this well is the only one on it.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Young 66 G-14-242761Hemphill (Granite Wash Lower)Mmgl Txph, LLC143K2MAug 2008 – Apr 2026

Gas, mcf lease total

Last 12 months 57,905 · prior 12 48,633(+19%)

02K4K6K202420252026

Chain of custody

Every operator that reported production on this well's lease, in order.

  1. 1Devon Energy Production Co, L.P.Aug 2008 → Jun 2016
  2. 2Tecolote Energy Operating, LLCJul 2016 → Dec 2019
  3. 3Blackbeard Operating, LLCJan 2020 → Sep 2023
  4. 4Mmgl Txph, LLCOct 2023 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
655328-99DrillDevon Energy Production Co, L.P.Feb 14, 2008Mar 25, 2008May 12, 200813,000

Completions

CompletedLeaseFieldOperatorStatusDepth
Aug 6, 2008Young 66 G-14-242761Hemphill (Granite Wash Lower)Mmgl Txph LLCProducing11,691

Formation tops

As filed on W-2/G-1. Subsea from 2,630 ft elevation.Download CSV →

FormationMD ftSubsea
Granite Wash10,554-7,924

Perforations

Perforated and open-hole intervals.

FromToType
11,65015,494Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.37559617.5770 S
9.6256,50512.25660 S
712,0748.75420 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 →

SuffixRRC record dateW-2 / G-1 dateLogs referenced
00Jan 7, 2009Sep 22, 2008Yes
00Dec 8, 2008——

Well logs

3 logs loaded from the RRC's log index, the latest received Jul 23, 2009. Density, Neutron, Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.

Open the RRC's log search for this well ↗
Logas describedFiles Intervalft, as filedDatereceivedSizeMB
NEUTRON/DENSITY POROSITYSpans Granite WashTIFF10,500 to 11,912Jul 23, 2009run Jul 21, 20081.07
RESISTIVITYSpans Granite WashTIFF10,500 to 11,912Jul 22, 2009run Jul 21, 20081.45
RESISTIVITYSpans Granite WashTIFF10,500 to 11,912Jul 23, 2009run Jul 18, 20082.88

"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.

Find logs withinmiles of this well:List →Map →

Search the well logs loaded into Petrora →

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.

The logs loaded for this well are under Well logs, with the RRC's log search 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/21134152, documented in the API reference.