In contrast to natural gas production, in crude oil production, the first step is merely to process it for transportation. While natural gas is usually processed to specification on site and then fed directly into the transfer line to the end customer systems, the second step of the oil treatment takes place in a refinery because of the complexity and quantity of the end products.

The main tasks of the systems at the source are:

  • The separation of oil from the associated gas and produced water. This separation is done in 3-phase separators or centrifuges.
  • The secondary separation of the oil-water emulsion, combined in many cases with the desalting of the crude oil.
  • Treatment of the bound gases, which can be either compressed or processed and the energy used to produce electricity and generate heat. Here, the accumulated gas volumes determine the method of treatment and attention is paid to achieving the lowest possible emissions.
  • Preparation and insertion of salt water into the reservoir, in which the processes used are often very complex and not yet established as state of the art. The operators rely on innovative technologies in order to meet the more stringent demands of the water quality requirements.

Often for the first production cycle, mobile test systems are used to analyse the quality and to define the necessary processing steps.

The compact and modular design of these types of systems are flexible with regard to preparation and processing techniques and can then be transported to another location.

oil processing


Crude & Condensate Stabilization

Crude & Condensate Stabilization

EnerProcess custom designs crude and condensate stabilization to meet the process requirements with the added flexibility to meet NACE requirements, customer preferred instrumentation as well as options for gas fired reboilers or hot oil/steam reboilers. Crude and Condensate Stabilizers are used in process plants to meet the RVP requirements specified by the customer. The typical stabilizer arrangement includes a stabilization column with process trays or packing installed and a stabilizer reboiler. Some system will also include inlet stabilized/unstabilized heat exchangers and overhead reflux condenser for enhanced recovery and more efficient design. Similar arrangements are also offered for H2S stripping from liquid to meet the maximum allowable sulfur content in the sales product. Contact EnerProcess for your stabilization requirements.

Heater Treater

Heater Treater

Heater Treaters, an essential piece of equipment in the production process, break up wellstream emulsions, separating the crude oil from water and other foreign materials. Gas is liberated prior to the filtering and settling sections, allowing liquid and sediment separation without the agitation of gas breaking out of the liquid.

Vertical Heater Treater

The most commonly used single-well treater is the Vertical Heater Treater. It consists of three major sections: gas separation, FWKO, and heating section. Flow enters the top of the treater into a gas separation section, oil and water travel down through the downcomer to the heated section where the heat breaks the emulsion which results into forming larger droplets until they start settling downward to the water section. At that point clean oil at the top of the heated section spills over and out of the vessel and water is removed through an external adjustable water leg controlled by a head pressure operated dump valve.

Horizontal Heater Treater

A horizontal treater can handle large amounts of emulsion by utilizing a long “U” shaped firetube. This firetube has greater heating capacity, thereby allowing a higher treating rate. The large horizontal interface area in the settling section allows for more efficient separation of emulsion and gas release. Horizontal treaters must operate under pressure to boost oil to storage tanks.

Desalter Packages

Desalter Packages

The first process unit in an oil refinery is the desalter. Salts in crude are generally contained in residual water suspended in the oil phase. The chemical composition of these salts varies, but the major portion is nearly always sodium chloride with lesser amounts of calcium and magnesium chlorides. Crudes also contain impurities such as silt, iron oxides, sand and crystalline salt as mechanical suspensions. Removal of these contaminants is known as “desalting”.

EnerProcess' engineering team has extensive process design and modular engineering experience, building and delivering oil & gas processing and treating facilities. We excel in both pre engineered and custom designed solutions using open art technology and proprietary designs. When combined with EnerProcess’s broad family of midstream products and in house engineering services, you can count on us to deliver a profitable project time after time.