Superior Energy Services Acquires Quail Tools from Nabors for $600M

Cardinal Services Acquires Quality Energy Services

August 14, 2025

Energy

Cardinal Services, backed by Kotts Capital Holdings, has acquired Quality Energy Services (QES), an offshore well intervention and production optimization provider headquartered in Broussard, Louisiana. The deal expands Cardinal's specialty oilfield services capabilities and footprint across the Gulf of Mexico and Gulf Coast; QES President Randy Landry will remain with the combined company to lead QES post-closing.

Superior Plus Acquires Quarles Delivered Fuels Business for US$144M

June 1, 2022

Energy

Superior Plus Corp. completed the acquisition of the retail propane and refined fuels distribution assets of Quarles Petroleum Inc. (the Quarles Delivered Fuels Business) for US$144 million. The assets serve roughly 55,000 residential and commercial customers—primarily in Virginia—and include 29 bulk plants, one rail terminal, ~3 million gallons of storage, a 196-vehicle fleet and 188 employees; Superior expects approximately US$19 million in run-rate Adjusted EBITDA within 24 months.

Qualus Acquires Phoenix Engineering Services, Inc.

November 17, 2021

Utilities

Qualus, LLC, a provider of engineering and technical field services to utilities, acquired Phoenix Engineering Services, Inc., an Atlanta-area engineering and testing firm. The acquisition expands Qualus’s service offerings—adding relay and substation testing, NERC PRC studies, panel building and utility software development—to strengthen capabilities for utility, municipal, commercial and renewable clients.

Qualus Corporation Acquires Aquawolf, Transmission & Distribution Engineering Subsidiary of Mammoth Energy

December 3, 2025

Engineering Services

Qualus Corporation acquired Aquawolf, the transmission and distribution engineering subsidiary of Mammoth Energy, expanding Qualus' high-voltage transmission and grid modernization capabilities and adding offices in San Diego, Denver and Vancouver, Washington. The acquisition deepens Qualus' engineering and construction support services across the project life cycle and strengthens its technical capabilities in transmission and distribution design, resiliency and grid hardening.

Iron Oak Energy Solutions Acquires Superior Silica Sands LLC

December 16, 2025

Energy

Iron Oak Energy Solutions LLC acquired Superior Silica Sands LLC in an all-stock transaction, adding over 3 million tons per year of frac sand production capacity and expanding Iron Oak's footprint in the Eagle Ford Shale. The deal increases Iron Oak's total annual production capacity to roughly 40 million tons and broadens the combined platform's ability to serve oil & gas, construction and industrial sand markets.

EnergySolutions Acquires Substantially All Assets of Williams Industrial Services Group for $60M

July 24, 2023

Industrial Services

EnergySolutions agreed to acquire substantially all assets of Williams Industrial Services Group Inc. for $60 million through a Section 363 sale as part of Williams' Chapter 11 process. The deal (for Williams' nuclear, fossil, energy delivery and paper mill operations) excludes Williams' water contract operations in Florida and Texas and is intended to expand EnergySolutions' nuclear services and plant-support capabilities.