Adamas Energy has moved into Oilgasleads’ Top 10 operators by active rig count across Oklahoma, Louisiana, Texas and New Mexico, replacing Matador Resources in the latest ranking. Its arrival highlights the visibility of a substantial natural gas drilling program now operating under Mitsubishi Corporation’s ownership.
The supplied 2026 year-to-date drilling dataset contains 46 Adamas Energy well records, spread across 10 counties and parishes in Texas and Louisiana. Although the ranking covers four states, all records in this extract are located in these two gas-producing states.
Aethon Assets, Mitsubishi Capital and a Global LNG Strategy
Adamas Energy is a Dallas-based operating business established to manage the acquired Aethon assets. Operations transitioned to Adamas following Mitsubishi’s completion of the acquisition on July 14, 2026, with Gordon Huddleston serving as president and CEO.
The transaction was valued at approximately US$7.5 billion, comprising US$5.2 billion for equity interests and approximately US$2.33 billion in assumed debt. It covered Aethon III, Aethon United and related businesses and interests.
At announcement, Mitsubishi reported production of approximately 2.1 billion cubic feet of natural gas per day from the acquired assets, primarily located in the Haynesville Shale of Texas and Louisiana. That figure describes the acquired portfolio at announcement, rather than production attributable to the 46 records analyzed here.
Where Adamas Is Drilling
San Augustine County leads the supplied dataset with 13 records, followed by Nacogdoches County with seven. Together, these two East Texas counties account for 43.5% of the total.
County / Parish State Geographic play grouping Record count San Augustine Texas Haynesville/Bossier region 13 Nacogdoches Texas Haynesville/Bossier region 7 Shelby Texas Haynesville/Bossier region 5 Bienville Louisiana Haynesville/Bossier region 5 Angelina Texas Haynesville/Bossier region 4 Bossier Louisiana Haynesville/Bossier region 3 Red River Louisiana Haynesville/Bossier region 3 Robertson Texas Cotton Valley / Bald Prairie 3 Natchitoches Louisiana Haynesville/Bossier region 2 Leon Texas Cotton Valley / Bald Prairie 1 Total 46
Using county and parish locations to group the activity, 42 records—or 91.3%—fall within the broader Haynesville/Bossier region. The remaining four records, or 8.7%, are in Leon and Robertson counties, where the supplied field designation is Bald Prairie (CV Consolidated).
Play / regional grouping Record count Share Haynesville/Bossier region—East Texas 29 63.0% Haynesville/Bossier region—North Louisiana 13 28.3% Cotton Valley / Bald Prairie—Texas 4 8.7% Total 46 100.0%
These are geographic play groupings, supported where available by the file’s field labels. They do not establish the producing formation of every well. The Texas Railroad Commission identifies the Haynesville/Bossier region across East Texas and western Louisiana.
Why the Move Matters
Adamas’ entry into the Top 10 places Mitsubishi’s newly acquired operating platform among the most visible drilling customers in Oilgasleads’ four-state active-rig ranking. The supplied records show a concentrated East Texas and North Louisiana footprint, giving service providers a defined territory for account planning and prospecting.
The acquisition also connects upstream gas supply with Mitsubishi’s broader energy business. Mitsubishi identified opportunities linking the assets with domestic gas sales, LNG exports, power generation and other downstream demand, including potential exports through its existing LNG relationships.
For oilfield suppliers, the practical takeaway is clear: Adamas combines an established Aethon asset base with Mitsubishi’s capital and global gas strategy. Its Top 10 ranking and 46 YTD drilling records make it an account worth tracking for drilling, completion and production-related opportunities.
Author: phinds