Hot Oil Units
GH SERIES
Hot Oil Units Built for Reliable Oilfield Heating
Hot oil units—commonly known as hot oilers or heater treaters—have been a staple of North American oilfield operations for over sixty years, with thousands of units still in service today. Originally designed to clean wellbores by heating and circulating oil through the annulus, these versatile machines have evolved to serve a wide range of applications across the oil and gas industry.
With decades of experience building and servicing oilfield equipment, GenTex understands what these units are asked to do and what it takes to keep them working in the field. That experience shapes how we design, build, and support our GH Series hot oil units, with practical layouts, serviceable components, and controls that give operators a clear picture of what's happening.
Because building a dependable unit isn't just about how it performs on day one. It's about how it's designed, how it's serviced, and how it holds up to the demands of the work ahead.
Applications/Key Functions of GenTex Hot Oil Units:
Hot oil units play a critical role in many oilfield operations where controlled heating and fluid circulation are required. GenTex hot oil units are designed to support a wide range of applications across well servicing, pipeline maintenance, and facility operations.
Wax and Paraffin Removal
Hot oil circulation is commonly used to remove wax and paraffin buildup from wellbores, tubing, and pipelines. By heating and circulating oil through the system, deposits can be softened and removed to restore proper flow.
Typical applications include:
Wax and paraffin removal from tubing and wellbores
Cleaning pipelines affected by wax buildup
Circulating hot oil through coiled tubing to remove deposits
Well Servicing and Workover Preparation
Hot oil units are frequently used before and during workover operations to prepare equipment and ensure systems are operating properly.
Applications include:
Cleaning tubulars prior to workover operations
Heating fluids used in stimulation and fracturing treatments
Preparing wells and equipment for servicing operations
Pipeline and Facility Maintenance
Hot oil circulation can also be used to clean and maintain pipelines and surface equipment throughout production facilities.
Common uses include:
Pipeline cleaning and circulation
Surface facility cleaning prior to inspections or maintenance
Cleaning coolers, compressors, and other production equipment
Hydro-blasting and jetting applications
Tank and Vessel Heating
Maintaining proper temperatures in tanks and processing equipment is critical for efficient operations.
Hot oil units can be used to:
Clean and heat production tanks
Circulate fluids in tanks and vessels
Support operations in reboilers, de-ethanizers, and de-stabilizer towers
Thawing Frozen Lines and Equipment
In cold climates, pipelines, valves, and production equipment can freeze and restrict flow. Hot oil units provide controlled heating to safely thaw frozen systems and restore operation.
Applications include:
Thawing frozen water lines
Heating gelled or frozen fluids
Preventing winter blockages in pipelines and production systems
GenTex hot oil units are engineered for reliability, flexibility, and consistent performance in demanding oilfield environments. Whether removing wax buildup, maintaining pipelines and facilities, or heating fluids for critical operations, our hot oil units provide dependable heating and circulation where it matters most.
What Sets Our Hot Oil Units Apart?
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Clear information makes a difference in the field. GenTex's Centralized Digital Controls (CDC) system brings key operating information together, giving operators visibility into pressures, temperatures, flow rates, burner performance, and system safeties. Rather than piecing together information from separate gauges, operators can see what's happening across the system in one place.
Learn more about our Centralized Digital Controls (CDC) System & Data Acquisition.
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Equipment doesn't get to choose the conditions it works in. Remote locations, changing temperatures, long operating days, and demanding jobs are part of the reality of oilfield work. We take those conditions into account when designing our units, with an emphasis on sound engineering, practical layouts, and components built for the demands placed on them.
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Building equipment is only part of the job. Understanding how to maintain it, troubleshoot it, and keep it in service matters just as much. Our experience building and servicing oilfield equipment has taught us to look beyond the initial build and consider what happens years down the road. Accessible components and practical layouts help make inspection, maintenance, and repairs more straightforward.
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Integrated monitoring and data acquisition allow operators to track system performance, record operational data, and identify trends that support preventative maintenance.
Combined with testing and inspection services, this data helps operators maintain safer, more efficient equipment over the long term.
TEXHEATER + ThermoGen Heaters
Proven Heater Technology. Built on Experience.
Choosing the right heater starts with understanding the job it needs to do. GenTex offers a range of TEXHEATER and ThermoGen options to suit different heating requirements, with capacities ranging from 2.5 million to 21 million BTU.
Our team can help you understand the available options and identify a heater suited to your unit and operating requirements. Depending on the application, we have a wide variety of heaters (rated on output) for customers to choose from:
25M TEXHEATER (2.5MM BTU)
35M TEXHEATER (3.5MM BTU)
50M ThermoGen (5.5MM BTU)
70M TEXHEATER (7MM BTU)
200M ThermoGen (21MM BTU)
Every hot oil unit leaves our shop with a job to do. Our job is to build it with care, test it thoroughly, and support the customers who depend on it.
From the heating system and controls to the details that make a unit practical to operate and service, we bring decades of experience to the build — and a commitment to getting it right.
Have a hot oil unit requirement to discuss?
Talk to our team about your application, operating needs, and available options.