Solutions for Dual Fuel and E-fleets

Treating Field Gas for Dual-Fuel & E-Fleets

When using field gas to power dual-fuel engines, it is imperative that the natural gas is properly processed or the whole operation can fail. CROFT offers solutions for separation, dehydration, and BTU reduction, which are all crucial steps to making field gas suitable for powering dual-fuel engines and e-fleets. 

process of treating fuel for e-fleets

Separators & Coalescing Filters

coalescing filter for treating field gas

Prevents Slugging and Removes Particles

When treating field gas for use in high-speed engines, it is important to have proper separation in order to prevent slugging and to remove unwanted particulates from the gas stream. This can be achieved with CROFT's separators and coalescing filters.

Separators prevent slugs from entering the processing equipment downstream. CROFT offers horizontal and vertical separators in both two-phase and three-phase designs.

Coalescing filters remove fine particles such as dust or mist that are too small for a separator to remove. This level of filtration for dual fuel and e-fleets will increase the longevity of the engine life.

Separators and coalescing filters can be added to all-in-one compact skid packages for easy transportation.

mobile natural gas dehy unit

Dehydrates Gas with Zero Emissions

Dehydrating your field gas will prevent hydrate formation and corrosion. These issues can halt production and decrease the life of e-fleet and dual-fuel engines.

CROFT offers traditional glycol dehydrators as well as our preferred dehydration unit, Passive Dehydration Systems (PDS). The PDS units are solid desiccant dehydration units that provide a safe, emission-free alternative to glycol dehydrators or TEGs.

This dehy unit works by wet gas flowing upward through a series of dry desiccant vessels each containing our specifically formulated enviroDRI® desiccant. This non-hazardous product absorbs the moisture and dissolves into a brine solution that is drained to the water storage on location.

CROFT Passive Dehydration Systems can be skid mounted or trailer-mounted with separators and/or coalescing filters for easy transportation.

Fuel Gas Conditioning System

mobile unit for treating field gas for dual-fuel and e-fleets

 Recovers Valuable NGLs and Reduces BTU

When treating field gas, lowering the BTU removes heavy hydrocarbons and prevents hydrate formation and derating engines. With the reduction in the BTU, we can take otherwise unusable fuel from the wellhead and run dual fuel and e-fleet engines. By separating the NGL’s and dehydrating the gas stream, we remove most of the heavier components that often cause engine issues.

The Fuel-Gas Conditioning System incorporates the Ambient Cooling System to initially cool the gas. The Joule Thomson System then removes hydrates and hydrocarbon liquids, reducing the BTU.

CROFT can custom design a fuel gas conditioning system to include line heaters, meter runs, and separators to provide an all-in-one package for e-frac fleets.



The Rise of Renewable Natural Gas

By Croft Productions | July 22, 2021

As the push for sustainable energy is becoming increasingly renowned, companies are taking stock in how they can contribute to its demands, leading to a rise in renewable natural gas.

FueParameters for Large Natural Gas Powered Frac Fleet

Conditioning Fuel Gas for Natural Gas Driven FRAC Fleet | Case Study

By Cameron P. Croft | January 5, 2021

This case study will focus on treating fuel gas for gas lifts utilizing CROFT’s Fuel Gas Conditioning System.

horizontal separator

Frequently Asked Questions | Separators

By Croft Productions | December 7, 2020

Get answers to our client’s most frequently asked questions about our Fuel Gas Conditioning System (FCS)

CROFT Fuel Gas Conditioning System

Frequently Asked Questions | Fuel Gas Conditioning System (FCS)

By Croft Productions | November 3, 2020

Get answers to our client’s most frequently asked questions about our Fuel Gas Conditioning System (FCS)

Webinar | JT Systems & Fuel Gas Applications

By Croft Productions | September 25, 2020

This webinar provides education on fuel gas and JTs. Our Director of Engineering focuses on cleaning up fuel gas and getting natural gas to pipeline specification.

passive dehydration system

Glycol Dehydration versus solid Dessicant Dehydration

By Cameron P. Croft | May 21, 2020

Absorption vs. Adsorption Dehydrating natural gas, or the removal of water vapor from natural gas can be done by either adsorption or absorption. Croft’s Passive Dehydration System uses adsorption, where water vapor is collected and condensed on the surface with the use of a solid desiccant. Solid desiccants have a high adsorption capacity, a low resistance to gas […]

truck of enviroDRI desiccant=

Frequently Asked Questions | enviroDRI

By Cameron P. Croft | May 5, 2020

CROFT Passive Dehydration Systems natural gas dehydration unit that utilizes a specially formulated solid desiccant called enviroDRI to adsorb water from the gas stream. Below are our clients’ most commonly asked questions about enviroDRI. What is enviroDRI? enviroDRI is a deliquescent desiccant pellet about the size of an almond designed to adsorb water from hydrocarbon […]


How a Passive Dehydration System Works

By Cameron P. Croft | April 30, 2020

The Passive Dehydration System is the preferred alternative to the glycol unit for natural gas dehydration. Dehydration is a critical process required to meet pipeline specifications.

drilling rig fuel processing

Natural Gas Driven Drilling And Hydraulic Fracturing

By Cameron P. Croft | March 17, 2020

Dual Fuel Powered Drilling Rigs and Frac Spreads Many cost-conscious oilfield companies have made the switch to either natural gas or dual-fuel, also referred to as bi-fuel, which is a mixture of diesel and natural gas. Dual-fuel engines run on a combination of diesel and natural gas, giving companies the flexibility to choose which fuel […]

field work service

Purring Compressors with FCS

By Croft Productions | March 2, 2017

Croft has just installed a Fuel-gas Conditioning System (FCS) for a new client in the Eagleford and is already showing excellent results. The unit, our FCS-500, takes the high pressure/high temperature gas from the discharge of the compressor and cools, separates, dehydrates, reduces the BTU, and reduces the pressure to the required fuel system PSI. The reduction […]

If you are looking for production or processing equipment for your well site, an Account Manager will be in touch with you within one business day.

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