Eikenlaan 237
Alphen aan den Rijn,  2404 BP

  • Booth: 1629

Frames has been offering systems and solutions in the international energy market since 1984. Together, we design, build, and deliver oil & gas processing equipment, separation technologies, flow control & safeguarding systems and renewable energy and water solutions. We are headquartered in the Netherlands and have 7 international offices worldwide. 


  • Electrostatic Coalescers (Dehydrators/Desalters)
    Frames proprietary Electrostatic Coalescers are 2-phase separators that utilize an electrostatic field to remove water and salts from crude oil, allowing cost-effective transport and protect downstream processes....

  • Process Description

    Frames builds on its vast experience in coalescer engineering, enabling us to give our clients a competitive advantage when it comes to cleaning crude oil. By efficiently and effectively removing undesirable water and salts, our clients are able to increase the quality of their crude oil, cut their transport costs and protect their downstream processes and equipment.

    Removal of water and contaminants generally comprises two steps: dehydration and desalting. Frames Coalescers are designed for
    both steps, and are applied in upstream as well as downstream applications. In oilfields, the emphasis is generally on a combination
    of dehydration and desalting, whereas in refineries the focus is primarily on desalting.


    In the process of removing water from oil, electrostatic treatment is typically preceded by 2-phase or 3-phase bulk separation in the upstream process. Electrostatic coalescers are applied as the final separation step to break up emulsions and reduce the remaining water fraction (dehydration). This is the reason why they are typically applied in upstream applications.


    Electrostatic coalescers are also applied for desalting in order to reduce the crude’s salt content. Because salts are soluble in water, a
    reduction in water fraction will automatically reduce the crude’s salt content. Desalting therefore often occurs in two stages: the first stage (dehydration) is followed by a second stage (desalting), where the salts are diluted by the addition of wash water
    between the first coalescer (dehydrator) and the second (desalter). The main aim of having a second stage in the system is to ensure a high dilution rate (ratio of wash water and water fraction in the crude). This dilution is necessary since dehydration alone is
    usually not sufficient to reach typical salinity values in the export crude (~10 - 100 PTB).

    Product Description

    The Frames Inlet Distributor injects crude just below the electrostatic grids. Between the grids, the water droplets present in the crude are exposed to the electrostatic field that rearranges the (salt) ions within the droplets. Droplets will then attract each other and as a result coalesce, grow in size and fall out of the upward flowing crude. The treated crude is collected at the top of the vessel while the effluent water is collected at the bottom.


    Frames Electrostatic Coalescers are designed using Alternating Current (AC). Although other types of power supply are available and promoted (DC, AC+DC), these are operationally demanding and bring significant draw-backs, for instance a tendency for arcing (shortcircuiting) and electrical complexity. Because Frames values reliability and operational simplicity, we have embraced the AC technology at the core of our designs.

    Frames Inlet Distributor

    The unique Frames Inlet Distributor has been specifically designed to ensure optimal (uniform) distribution of the oil-water mixture just below the grid. This results in efficient use of the electrostatic area and allows the use of smaller vessels compared to the traditional distributors used in the industry. The number of headers and their design are specifically sized for each application using design rules developed by Frames. Under identical conditions the Frames Distributor shows a superior velocity distribution (uniform) than the traditional designs.

    Technical Details

    • Efficiently removes water and salts from crude oil
    • Optimizes crude oil quality and cuts transport costs
    • Delivers clean oil ready for downstream processing
    • Robust and reliable design
    • Proven and cost-effective AC technology
    • Operational simplicity through application of essential components only
    • Optimum flow distribution with unique Frames Inlet Distributor
  • Produced Water Treatment
    Produced water is a term for reservoir water that is separated during the oil and gas production process. Oil and gas reservoirs normally contain amounts of water, oil, solids, condensates and gas....

  • Product Definition

    Produced water is a term for reservoir water that is separated during the oil and gas production process. Oil and gas reservoirs
    normally contain amounts of water, oil, solids, condensates and gas. When the oil and gas is processed, water is separated and
    pumped back into the reservoir in order to maintain the right pressure in the well. Alternatively, the water is discharged to the
    sea or sewerage. Both methods involve a set of conditions and strict regulations aimed at preventing well contamination and
    water pollution. When the oil and gas reservoirs are depleted, water content may be as much as 98% of the total fluids being produced. As a result, the handling and treatment of produced water up to the required quality levels becomes an increasing cost factor in the total Life Cycle Cost of an operated asset.

    Product Description

    Frames designs produced water treatment packages in accordance with client specifications and project requirements. Following a thorough analysis of the inlet conditions and outlet requirements, our team of specialists selects the most suitable combination
    of technologies and integrates them into a process package to achieve the required performance. The Frames Produced Water Treatment Packages enable high availability, a large turndown range and practical operation as well as easy access to valves, instruments and pumps. During the design phase, our team pays special attention to aspects such as plot space, weight, maintenance and total life-cycle costs. Our solutions for removal of hydrocarbons and/or suspended solids from the produced water are divided into systems for Onshore and for Offshore locations, each with the most appropriate and effective technologies. Offshore applications have special requirements in terms of space and weight limitations. In case of 'Floating or FPSO' production, the process is subject to wave motions.

    Onshore technologies:

    The produced water from the separators is typically processed with a so-called Water-Oil Separator (WOSEP) or a Coalescing Plate
    Separator (CPI), followed by Induced Gas Flotation (IGF) and Multi-Media Filtration.

    • Coalescing plate separation (CPI)
    • Induced gas flotation (IGF)
    • Multimedia filtration

    Offshore technologies:

    Offshore the produced water from the separators is typically processed with Hydrocyclones followed by Compact Flotation.

    • Cyclonic de-oiling and de-sanding
    • Compact flotation (CFU)
    • Solids removal & cleaning

    Frames system configurations for produced water treatment usually consist of a first stage separation process for bulk free oil removal, followed by a secondary treatment step for removal of small oil droplets. The combination of primary and secondary
    systems will meet 90% of the requirements for discharge limits. If required, we can extend these systems with media filters and sand extraction/cleaning equipment to meet specific demands.

    Technical Details

    • Optimization of vessel dimensions
    • CFD verification of design
    • 2-phase, 3-phase
    • Custom made
    • Wider turndown
    • Lower fouling
  • Glycol-based Dehydration Technology
    Natural gas usually contains a large amount of water and is typically water-saturated. This water causes several problems for downstream processes and equipment, such as corrosion or freezing in pipelines at relatively high temperatures....

  • Product Description

    Frames has developed a complete range of glycol-based dehydration solutions to handle the most demanding conditions. By analyzing your gas composition and operating requirements, our team of engineering experts will design, build, and commission a complete drying solution to meet the gas demands of the downstream processes. Our glycol-based dehydration technology optimizes gas field
    productivity by efficiently drying the gas stream. In addition, it protects equipment from corrosion and damage caused by ice crystals
    (hydrates) that can form at relatively high temperatures.

    Select from a range of glycols

    Frames Glycol-based Gas Dehydration Systems use liquid desiccant technology to efficiently remove water from natural gas and carbon dioxide. Building on more than 30 years of industry experience, our engineers are able to specify the best glycol system to fit your requirements and optimize field performance. This includes using the common glycols diethylene glycol (DEG), tetraethylene glycol (TREG), and the more widely-used triethylene glycol (TEG).

    Minimized energy consumption

    Our glycol-based dehydration systems typically include efficient, energy-saving technology such as heat exchangers and the reuse of flash gas for stripping. Moreover, a smart balance between packing height, glycol purity, and glycol amount allows you to benefit from minimized utility consumption levels.

    Low foaming and no need for chemical pH control

    Foaming due to condensation of hydrocarbons usually causes glycol loss as well as reduced plant capacity. Our systems are designed to stop heavier hydrocarbons from condensing and forming foam at the top of the structured packing, thus minimizing
    glycol loss.

    Frames systems are also carefully designed to operate at a low skin temperature of the reboiler heater bundle to prevent unwanted glycol degradation. This design feature eliminates the need to use chemicals to control fluctuations in system pH associated with the degradation of glycol.

    Process Description

    Your Frames Glycol-based Dehydration Unit mixes lean, water-free glycol with wet natural gas in the top of an absorber (glycol contactor), to dry the gas by physical absorption.

    This drying process occurs on the surface of structured packing, towards the bottom of the column. The dry natural gas then leaves
    the top of the contactor column ready for use. The wet glycol, often referred to as “rich glycol”, is drawn off from the bottom.

    From the contactor, the rich glycol is routed to the regeneration package for purification. Here it is first preheated using heat from
    the reflux condenser at the top of the reboiler’s still column, along with heat from the lean/rich heat exchanger. The heated glycol then enters the flash vessel for the three-phase separation of gas, glycol and condensate. At this point it is also filtered to remove
    any solid contaminates caused by corrosion, scaling or minor glycol degradation.

    Afterwards, the warmed rich glycol is fed into the stripper (also known as a regenerator) which consists of a still column, an overhead condenser, and a reboiler. Here it is thermally regenerated to remove excess water and to regain the high glycol purity.

    To optimize energy use, the hot clean and lean glycol is used to preheat the incoming rich glycol in the heat exchanger, before being
    pumped up to operating pressure and cooled ready for reuse in the contactor.

    Technical Details

    • Efficient system for removing water from wet natural gas and CO2
    • Protection of downstream processes against corrosion and clogging
    • Range of glycols including DEG, TREG and the widely-used TEG
    • Low energy design with efficient heat exchangers
    • Full glycol filtering and regeneration system
    • Low foaming design and no need for chemical pH control