FORMATIONS · RRC WELLBORE FILE

Abo

Reported as a top in 525 wells across 24 counties, at a median depth of 7,548 ft (6,696 to 8,513 ft in most wells). 7 of those wells were permitted in the last three years.

A well counts if any of its completion filings report this formation, whether it produces from it or drilled through it. Depths are measured depth as filed; typo depths exist, which is why ranges are percentiles, not extremes. About completion reports →

525
wells reporting a top
7
permitted in last 3 years
24
counties
7,548
median top, ft

COMPUTED OCT 29, 2026 · REBUILT DAILY

Depth by county

Counties with at least five wells reporting the top. Bars are well counts.

CountyWellsMedian, ftP10–P90Last 3 yrs
Terry
178
7,6177,498–7,9131
Hockley
150
7,5007,251–7,7276
Ector
38
8,7468,246–8,8000
Yoakum
29
7,9727,815–8,2000
Gaines
25
7,2787,204–8,2520
Andrews
22
7,3267,139–9,4360
Lamb
20
6,6206,494–6,6750
Glasscock
13
7,3976,191–7,6880
Cochran
10
7,4006,589–7,5340
Scurry
8
2,9642,945–3,6610
Crane
6
7,9724,910–8,5040
Sterling
6
6,6085,190–6,8920

Operators

Current operator of record for wells reporting the top, ranked by wells permitted in the last three years.

Recently permitted wells reporting the Abo

BY LAST PERMIT ISSUED

Last permitLeaseOperatorCountyTop, ftAPI
Apr 22, 2026Coons, W.A.Hilcorp Energy CompanyTerry7,61544530577
Sep 29, 2025Hamilton UnitRogers, S. K. Oil, Inc.Hockley7,59221937487
Dec 4, 2024Sundown Slaughter UnitSabinal Energy Operating, LLCHockley6,79921937546
Jul 16, 2024Heffington SWDBeryl Oil and Gas, LPHockley6,85221937534
Feb 8, 2024Slaughter, BobSabinal Energy Operating, LLCHockley7,26821937530
Jan 31, 2024Slaughter, BobSabinal Energy Operating, LLCHockley7,25121937529
Jan 22, 2024Slaughter, BobSabinal Energy Operating, LLCHockley7,29021937528
Oct 24, 2023Adams, H. E. -C-Atlas Operating LLCCrane7,51010337375
Aug 11, 2023MayberryDiamondback E&P LLCEctor8,77513542372
May 31, 2023EstacadoStakeholder Gas Services, LLCYoakum7,97250137472
Mar 9, 2023Slaughter, BobSabinal Energy Operating, LLCHockley7,25121937519
Sep 2, 2022Wellman UnitWiser Oil Company, TheTerry7,50044531870
Mar 31, 2022Oasis 8Sabinal Energy Operating, LLCTerry7,75544531909
Mar 3, 2022Texaco Slaughter EstateSabinal Energy Operating, LLCHockley7,36921937503
Feb 3, 2022Texaco Slaughter EstateTexaco E & P Inc.Hockley7,18021936219
Feb 2, 2022Gracey, H.C.Boaz Energy II Operating, LLCTerry7,53844532437
Feb 1, 2022Texaco Slaughter EstateSabinal Energy Operating, LLCHockley7,36921937499
Feb 1, 2022Slaughter, BobSabinal Energy Operating, LLCHockley7,23921937500
Oct 6, 2021Luckenbach 6Sabinal Energy Operating, LLCTerry7,32844531708
Aug 12, 2021Wellman UnitWiser Oil Company, TheTerry7,49844500423
Aug 12, 2021Wellman UnitPerdure Petroleum LLCTerry7,49844532467
Jul 23, 2021McKnight, M.B.Stronghold Energy II Oper, LLCCrane5,37510334726
Jun 22, 2021Fielding UnitRogers, S. K. Oil, Inc.Hockley7,70221936649
Jun 15, 2021Reese ClevelandSabinal Energy Operating, LLCTerry7,54944532463
Jun 3, 2021Virgil SWDSilver Creek Permian OP Co, LLCCochran7,84207933308

About this data

Formation tops, elevations, perforations, and casing from the RRC dbf900 wellbore file, refreshed weekly, with reported names normalized to Petrora's formation registry. County and operator breakdowns are rebuilt nightly.

Developers: this page as JSON is GET /v1/data/formations/abo, documented in the API reference.