Components Of Chemical Injection Systems

by Andrew Smith
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Chemical Injection Skid, as its name suggests is a piece of equipment that is designed to pump chemicals through systems at the appropriate pressure required for the system.

Chemical injection can operate either continuously or intermittently and is utilized in a range of configurations for a variety of applications in the offshore and marine industries.

In this type of oil & gas engineering solutions system water is introduced into the reservoir to increase the pressure and increase the amount of oil produced. The system also serves to remove or sweep oil from the reservoir moving it toward water injection wells that can be found offshore and onshore. A mere 30% of the reservoir’s oil is extracted, so it is necessary to increase the percentage of extraction and ensure the reservoir’s rate of production over a long duration of time.

Components Of Chemical Injection Systems

The following table will go over each of the main elements of a typical chemical injection system. Based on their intended use and physical settings, the different chemical injection systems can differ however, the majority of them employ each of these in a different way:


 Tanks comprise one of the fundamental elements in any system for chemical injection as they are required to store the chemical substances that must be injecting to the systems. The dimensions and design of the tank can differ, but they’ll be circular and horizontal. They can have flat, conical or dished bottom and an unflat or dissected top.


Pumps are an additional essential component that chemical injector systems have as they serve as the means of making the flow of the fluid the pressure needed to accomplish the goal of the system. It could be of diaphragm or plunger design and could be fitted with a range of power sources, including electric motors, air operated motor, solar energy or solenoid-driven motor.

Valves and instruments

Valves and instruments are used to determine and monitor the operation of the system. In particular, they are used to check the level of liquid inside the tank, permit the calibrating for the rate of flow, track and adjust the pressure in the process, and also set off alarms and fail safes that are designed to guarantee security and function. Specific gauges and valves can differ depending on the precise nature of the chemical infusion system as well as the customer’s particular set of needs and requirements.

Electrical Chemical Injection Systems’ electrical system allows to allow it to be activated and stopped, either local or remote. Most of the time, all functions and controls will be connected to an control panel to facilitate convenience and functionality.

Skid Structures – Every skid-mounted chemical injection systems naturally have the skid structure as one of their primary components. The skid structure serves as the structural framework of the system, and is constructed to safeguard the system and accommodate the various components. It is usually constructed of structural steel that is continually put through welding. In many cases, it also has the drip pan that is made to catch the drained chemicals.

Benefits to Chemical Injection Systems Integrated Into Modular Process Skids

By incorporating chemicals injection systems within the modular process skid the customers can enjoy numerous advantages. In particular, when compared with skid-mounted units, modular process skids:

  • More cost-effective
  • More space efficient
  • Feature greater safety
  • It can be made and installed quickly
  • Reduces downtime at the workplace
  • It provides greater assurance of quality.
  • Built in more controlled settings
  • It is permitted to be used in potentially hazardous zones
  • Easy identification of assets in management
  • Passes a FAT and safety test prior to the delivery

Additional knowledge about Enhanced Oil Recovery (EOR)

There are three primary kinds of EOR which include chemical flooding gas injection, chemical flooding as well as thermal recuperation. This can increase the costs of development along with the hydrocarbons that are that are brought to the surface, producers don’t use EOR on every reservoir and well. Economically, the equation for development need to be logical. Thus, every field has to be carefully evaluated in order to determine what type of EOR is most effective for the reservoir. This is done by screening, characterization and scoping, as well as simulation and modeling of reservoirs.

Thermal Recovery

Thermal recovery adds heat to the reservoir in order to decrease the viscosity and viscosity of the oil. In many instances steam is pumped into the reservoir, which thins the oil and increasing its capacity to flow. The first time it was used to Venezuela during the 60s today thermal recovery makes up more than half of all EOR within the US.

Chemical Injection

Chemical injection EOR assists in releasing the oil that is trapped within the reservoir. The method introduces long-chained molecules known as polymers into the reservoir in order to improve the efficiency of flooding water or to enhance the effectiveness of surfactants. They are cleanser substances that reduce surface tension , which hinders an oil flow within the reservoir. Only 1percent of the EOR methods used today in the US comprise chemical injections.

Gas Injection

Gas injection as an additional method of recovering includes injecting natural gases nitrogen, carbon dioxide or nitrogen in the reservoir. The gases could expand and push the gases into the tank, or blend or dissolve in the oil, thus reducing its viscosity and boosting flow.

CO2-EOR, also known as carbon dioxide (CO2-EOR) is the process that is growing in popularity. Although the initial CO2-EOR innovations utilized carbon dioxide deposits that naturally occur The technology has been developed to inject CO2 generated as by-products of industrial uses.

In the US in the 1970s in Texas CO2-EOR is currently utilized to treat cancer in Texas in Texas and New Mexico and is expected to expand its use in the near future. The majority of EOR used by the US is a kind which uses gas for injection.

Other EOR applications that are gaining traction include low-salinity water floodingthat is expected to boost production by around 20%, as well stimulation and well stimulation, which is a cost-effective solution since it can be applied for single wells (rather than the entire reservoir).

Offshore applications for EOR

While EOR applications are primarily used inshore environments, technology is being developed to extend the scope and application of EOR for offshore use. The challenges that currently exist for offshore EOR include the economics of development, the weight power, space and space limitations for retrofitting current offshore installations and the fact that fewer wells are spread out, leading to sweep, displacement and delay time.

The use to EOR is being investigated in a variety of offshore projects. With the success of subsea processing and secondary recovery techniques being used in offshore areas through gas and water injection The technology for implementing EOR techniques are rapidly approaching.

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