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 in North American oilfield operations for over sixty years, with thousands of units still in service today. Initially designed to clean wellbores by heating and pumping hot oil through the annulus, these versatile machines have evolved to serve a wide variety of functions across the oil and gas industry.
GenTex hot oil units are designed to deliver reliable heating performance in demanding oilfield environments. Built for durability, efficiency, and ease of operation, our units combine robust mechanical systems with integrated digital controls to give operators clear visibility into performance while simplifying field operations.
What Sets Our Hot Oil Units Apart
Not all hot oil units are built the same. At GenTex, we focus on building equipment that performs reliably in real field conditions — not just on paper.
Integrated Digital Controls
Our Centralized Digital Controls (CDC) system provides operators with real-time monitoring of pressures, temperatures, flow rates, burner performance, and key system safeties.
Instead of relying on scattered gauges or aftermarket monitoring tools, operators have clear, centralized data that improves visibility and simplifies operation.
Learn more about our Centralized Digital Controls (CDC) System & Data Acquisition.
Designed for Field Reliability
Oilfield equipment needs to work in remote locations and harsh environments. Our hot oil units are designed with durable components and practical layouts that help crews operate safely and efficiently in real field conditions.
Our engineering approach focuses on systems that are dependable, serviceable, and built to perform in demanding applications.
Simplified Operation for Operators
Operators shouldn’t have to fight with complicated systems in the field.
Our integrated control systems provide clear instrumentation and centralized monitoring, allowing crews to quickly understand what the unit is doing and respond to changing operating conditions.
We also provide training and consulting services to ensure crews understand both the equipment and the operational best practices behind it.
Built for Serviceability
When maintenance is required, equipment should be easy to troubleshoot and repair.
Our units are designed with accessible components and service-friendly layouts that reduce downtime and simplify field maintenance.
Our team also supports customers with maintenance and repair services to keep equipment operating reliably.
Data That Supports Better Decisions
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.
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.
TEXHEATER + ThermoGen Heaters
Based on efficiency, reliability and cost, Our heaters are the best in the industry!
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)
