Stewart Brothers Drilling Company

What Stewart Brothers Drilling Company does

Stewart Brothers Drilling Company is a privately held, family-owned full-service drilling contractor headquartered in Milan, New Mexico, operating since 1945 under the legal entity SBQ2, LLC. The company performs specialized drilling, well construction, and well rehabilitation services for water, oil and gas, mining, environmental, and agricultural customers across eight western US states (Arizona, California, Kansas, Nevada, New Mexico, Oklahoma, Texas, Wyoming). Its service portfolio is organized around six core offerings: water well drilling (municipal, commercial, irrigation), mining and mineral exploration core drilling, oil and gas well drilling, environmental and geotechnical drilling, agricultural irrigation wells, and well rehabilitation/maintenance. The company employs multiple drilling methods including air rotary, mud rotary, reverse circulation, flooded reverse circulation, downhole air hammer, and hollow stem auger boring, supported by equipment such as the CME 750 Hollow Stem Auger rig for Standard Penetration Testing and geotechnical work.

The company's technical positioning emphasizes execution quality over volume, with specific claims of high core recovery in difficult formation geologies, straight-hole water well construction, and trained crews certified for restricted government sites (DOE, DOD, MSHA). It maintains a multi-jurisdictional licensing footprint spanning well driller permits and contractor licenses across all eight operating states. Its competitive advantages are framed around 70-plus years of accumulated drilling expertise in the Southwestern US, where it claims to have drilled, explored, and cored most of the economic and industrial minerals in the region, including potash, copper, coal, gold, uranium, oil shale, and rare earth elements.

Stewart Brothers operates as a project-based professional services contractor, with revenue generated from custom-quoted drilling projects priced on scope, geology, and location rather than standardized or recurring contracts. Go-to-market is direct field sales led by President Joel Stewart, targeting enterprise buyers including municipalities, mining operators, agricultural operations, and oil and gas producers. With 11–50 employees and no disclosed funding, M&A activity, or external institutional ownership, the company presents as a stable, closely-held regional operator with diversified vertical exposure but limited scale signals.

Name

Stewart Brothers Drilling Company

Legal name

SBQ2, LLC

Website

https://stewartbrothers.com

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

11–50 employees

Short description

Stewart Brothers Drilling Company is a family-owned, full-service drilling contractor founded in 1945 and headquartered in Milan, New Mexico, performing water well, mineral exploration, oil and gas, environmental, and agricultural drilling services across eight western US states.

Ownership category

akta.pro rank

Product category

Drilling Services

NAICS

Drilling Oil and Gas Wells (213111), Support Activities for Mining (21311)

SIC

Drilling Oil & Gas Wells (1381), Oil & Gas Field Services, Nec (1389), Oil & Gas Field Exploration Services (1382)

akta.pro primary industry

Exploration & Production Drilling Services (RC, Core, Directional, Sonic, Auger) (IMAKAKAB)

akta.pro secondary industries

Drilling & Workover Rigs (Land & Offshore) (EUALABAA), Drilling & Well Construction (E&P Operator-led) (EUALAAAD), Well Construction & Completion Services (Cementing, Casing, Tubular Running) (EUALABAC)

Keywords

• Water well drilling
• Mineral exploration coring
• Environmental geotechnical drilling
• Oil and gas drilling
• Well rehabilitation services

Headquarters

HQ city

Milan

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Drilling Services: Project-based drilling services including water well drilling, mineral exploration, environmental drilling, oil & gas drilling, and well rehabilitation. Services are custom-quoted based on project scope, geology, and requirements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Stewart Brothers Drilling Company is a full-service drilling contractor that performs air rotary, mud rotary, reverse circulation, and flooded reverse circulation drilling for water wells, mineral exploration and core drilling, environmental sampling and monitoring wells, production water wells, oil and gas wells, irrigation wells, and well rehabilitation services. The company sells its services primarily to municipalities, agricultural operations, mining companies, and oil & gas producers across eight western U.S. states.

Product overview

Stewart Brothers Drilling Company is a full-service drilling contractor offering multiple specialized service lines rather than a single unified product. The company operates six core service offerings: Water Well Drilling (covering municipal, production, and irrigation wells), Mining and Mineral Exploration Drilling (including core drilling), Environmental Drilling Services, Well Rehabilitation/Maintenance, Oil and Gas Well Drilling, and Agriculture/Irrigation Drilling. These services are supported by various drilling methodologies including air rotary, mud rotary, reverse circulation, flooded reverse circulation, downhole air hammer, and hollow stem auger boring. The company serves commercial, industrial, municipal, and agricultural clients across eight western U.S. states.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• High core recovery when others cannot achieve it
• +2 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators3 records

Recent moves5 records

Expansion highlights2 records

Broad incumbents

• Major Drilling Group International: Canadian-listed global mineral exploration drilling services firm offering RC, core, and directional drilling. Closest broad-market incumbent to Stewart Brothers' mining core drilling business, but operates internationally and at substantially greater scale.
• Precision Drilling: Large publicly traded oil & gas drilling and well servicing contractor. Comparable in oil & gas well drilling methods and customer base to Stewart Brothers' O&G segment, but vastly larger scale, public market access, and more capital-intensive operations.
• Boart Longyear: Global drilling services and equipment company serving mineral exploration and production drilling customers worldwide. Directly comparable in mining core drilling and RC methods, but operates at vastly larger scale and also manufactures drilling equipment.
• Ensign Energy Services: Oil & gas drilling contractor with comparable oil & gas well drilling services (production wells, disposal wells). Much larger and more specialized to O&G than Stewart Brothers, which serves O&G as one of six verticals.

Direct peers

• Layne, A Granite Company: Layne (now a Granite Construction subsidiary) is the closest direct comparable — a water well, environmental, geotechnical, and mineral exploration drilling contractor serving municipal, agricultural, and mining clients across multiple US states. Most similar end-market mix to Stewart Brothers, though at significantly larger scale.
• Cascade Drilling, L.P. Cascade Drilling is a Pacific Northwest and Western US environmental and geotechnical drilling contractor with comparable service lines (monitoring wells, injection/extraction wells, SPT sampling) and similar customer profile to Stewart Brothers' environmental segment.
• Gregg Drilling & Testing, Inc. California-based environmental and geotechnical drilling firm with overlapping capabilities in monitoring wells, soil sampling, and SPT services. Comparable size band and similar service mix to Stewart Brothers' environmental drilling segment, including restricted-site access certifications.
• Hydro Resources: Regional water well drilling contractor serving municipal and agricultural customers with comparable focus on production wells and irrigation drilling. Closely matches Stewart Brothers' water well service line in scale and customer type, though with a narrower service portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/stewart-brothers-drilling-co

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stewart Brothers Drilling Company