Chemical Injection Systems

As the name implies, a chemical injection system is a piece of equipment designed to inject chemicals into a system at the required pressure for the system. It may function continuously or intermittently, and it can be used in a wide range of settings for many different purposes. For instance it could be found in either the upstream or downstream oil and gas industry and it might be used for everything from well cleaning, corrosion prevention, or improving pipeline flow or oil recovery. In all of these various settings and purposes it is frequently beneficial to integrate the chemical injection system into a process skid. Let’s take a look at the finer points of a chemical injection system as well as the benefits that are reaped through utilizing an integrated process skid.

Components Of Chemical Injection Systems

The following list will briefly discuss each of the major components of a typical chemical injection system. Depending on their purpose and physical setting, different chemical injection systems may vary, however, most employ each of the following in some way:

Tanks – Tanks are one of the most fundamental aspects of any chemical injection system because they required to store the chemicals which need to be injected into the system. Tank size and structure may vary, but typically they will be horizontal and cylindrical. They may feature a flat, conical, or dished bottom with a flat or dished top.

Pumps – Pumps are another fundamental aspect of chemical injection systems because they provide the source for generating the flow the pressure required to achieve the system’s objective. Pumps may be of a diaphragm or plunger type and may feature a number of different power sources including electric motor, air operated motor, solar power motor, or solenoid driven motor.

Valves and instrumentation – Valves and instrumentation are needed to measure and monitor what is going on within the system. For instance they will often monitor the liquid level inside the tank, allow for the calibration of the flow rate, monitor and adjust the pressure within the system, and set off alarms and other fail safes designed to ensure safety and proper function. Specific gauges and valves may vary depending on the exact purpose of the chemical injection system and the client’s own unique set of requirements and needs.

Electrical – A chemical injection system’s electrical system provides a way for the system to be started or stopped either locally or remotely. Typically the various controls and functions will be routed to a control panel for ease of use and function.

Skid Structure – All skid mounted chemical injection systems will also of course feature a skid structure as part of their fundamental component parts. The skid structure provides the structure itself for the system and is designed in such a way to protect the system while accommodating its various parts. It will usually feature structural steel which has been continuously welded. Often it will also feature a drip pan designed to collect drained chemicals.

Advantages of Chemical Injection Systems Integrated Into Modular Process Skids

By integrating the chemical injection system into a modular process skid, customers are able to gain a number of significant advantages. For instance compared to non-skid mounted units, modular process skids are:

  • More cost effective
  • More space efficient
  • Feature greater safety
  • Can be fabricated and installed quickly
  • Reduce downtime at the worksite
  • Have greater quality assurance
  • Are constructed in more controlled environments
  • Can be used even in hazardous areas

STI Group is highly experienced in fabricating modular process skids for chemical injection systems. We will work closely with our customers to ensure that everything is custom-built and fabricated to the customer’s own unique set of needs and requirements. Our state-of-the-art fabrication shops allow us to work quickly and efficiently to maximize both speed and quality.