Skip to content

Throughout an operation, things change. When you need a new tank, rig mats, or anything in between, Panther has the equipment you need to keep things moving.

We provide a complete drilling fluids treatment so you can concentrate on drilling your wells.

water line

oil line-1

synth line

stealth line


Experience unmatched production power and efficiency with our new chemical series.


Each basin presents its own unique drilling challenges. At Panther, we have the experience to manage them all. Learn more about how we do it.



By combining drilling fluids engineering with logistics management, we build and run an efficient process to reduce our customer’s well costs, ensure regulatory compliance and simplify the administrative burden.

The History of Panther

Panther Fluids Management was founded in 2017 by a group of experienced oilfield services professionals dedicated to delivering the highest quality products and solutions while protecting our customers’ bottom lines. Our initial products and services included drilling and completion fluids, production chemicals, solids control services, closed-loop equipment, haul-off and disposal services, and wellsite fluid engineers.

In 2021 we formed The Panther Companies, introduced our remote-location security services, and expanded our rental business.

Today, we serve the entire energy industry with a diverse portfolio of products and services.  We help our customers drive efficient operations, improve jobsite safety, maintain regulatory compliance and simplify the administrative burden.


  • Over 200 years of combined experience in fluids management and solids control services

  • Wide range of operational expertise spanning the largest U.S. basins, inland waters and offshore

  • Experience in all well types

  • 100% regulatory compliance – no mistakes, no citations

  • 100% on-time delivery of mud and drilling fluid products


The AIRE principles

Accountability We value the ability of our organization to honor our commitments, to clients and to each other.
Integrity Ethics and integrity are the foundation of our brand and the guiding principles for all we do.
Respect We are dedicated and patient in all situations in living up to our core value of respect.
Excellence We consistently exceed expectations through integrity, respect, and accountability.


Our leadership team has more than 200 years of combined industry experience and deep managerial and technical expertise.


Garrow Wessendorff

President and CEO, Managing Partner

Garrow Wessendorff has over 17 years of operations management experience in the finance and oil and gas sectors. Before founding Panther, Garrow was a partner and Vice President of Operations at Stryker Fuels and a Vice President of Commercial Lending at Frost National Bank.

P: 281.908.9198

John Gallio

EVP of Business Development, Managing Partner

With more than 38 years of experience in the oilfield services industry, John Gallio has held multiple management positions, including Vice President at Stage Three Separation, Vice President of Business Development at Oil Patch Group, and various high-level positions with Houston Prime Solids Control, SWECO Oilfield Services, and TOTCO. He was a founder of Stallion Oilfield Services.

P: 713.501.9880

Steve Sonnier

EVP of Operations, Managing Partner

Steve Sonnier has over 40 years of experience in the oilfield services industry. Steve previously held various managerial positions with Precision Drilling Fluids, Rapid Drilling Fluids, Newpark Drilling Fluids, Anchor Drilling Fluids, Ambar Drilling Fluids, Hughes Drilling Fluids, and Milchem. 

P: 281.638.1515


Chris Gallio

VP of Sales and Marketing

Chris Gallio is Panther’s Vice President of Sales and Marketing. Chris has over 10 years of oilfield experience in sales and marketing. Most recently Chris was an Account Manager for Helmerich and Payne where he was responsible for sales in the Northeast and South Texas. Prior to joining H&P, Chris held various sales roles at Oil Patch Group, Stage 3 Separation and Osage Environmental.

P: 713.501.6520


Emma Craven

Account Manager

Emma Craven is part of the sales team where her primary functions include growing Panther’s customer base, increasing Panther’s sales and providing the latest Panther solutions to current customers. She has previously worked in sales and BD roles at The WellBoss Company, Pioneer Energy Services, Tesco Corporation and Trinity Tools.

P: 713.933.9391


Sam Stephens

Account Manager - West Texas

Sam Stephens has over 20 years of experience in the industry and previously held technical and sales positions with both large and small fluid service providers. A native of West Texas, Sam's knowledge of the Permian Basin helps Panther provide customized fluid solutions specific to the area. Sam has extensive knowledge of drilling and completion fluids and maintains a proactive, hands-on approach to addressing the needs of our customers.

P: 432.557.4981


Bill Todd

Account Manager

Bill Todd brings more than 47 years of experience in the drilling fluids industry, including nearly 20 years with Baker Hughes Drilling Fluids. He has managed the drilling fluids business for many independents and major companies.

P: 713.870.9821


Let us know how we can help you with your next project

Environmental, Social and Corporate Governance

ESG refers to the three factors in measuring the environmental and social impact of an investment in a company or business. These three factors, when incorporated into investment analysis and portfolio management can offer investors potential long-term financial performance of a company. Panther has continually integrated each of these factors in every facet of their day-to-day operations to help clients reduce risk and environmental liability.

  • Safe and environmentally-sound methods to dispose drill cuttings and fluids
  • Solar power utilized for on-site lighting and security at remote locations
  • Closed-loop systems that remove open mud pits at the wellsite and provide more effective and efficient drilling fluid maintenance and clean up

Panther's Promise

Join CEO Garrow Wessendorff as he sheds light on how Panther prioritizes both performance and the planet. From stringent regulatory standards to innovative practices that minimize environmental impact, uncover the methods behind Panther’s mission.

Watch now to delve into our environmental commitment.