Chemical Injection Systems & Skids PackagesOffshore/Products
CHEMICAL
INJECTION SKID
Chemical Injection Skid, as the name implies, is a piece of equipment designed to inject chemicals into a system at the required pressure for the system.
MOWE Marine & Offshore specializes in the custom engineering, structural fabrication and integration of high-performance Chemical Injection Skid Packages. Engineered for offshore FPSO, FSO, platform and onshore oil & gas applications, these systems support corrosion inhibition, scale prevention and Enhanced Oil Recovery (EOR) processes.
Chemical injection may function continuously or intermittently, and it can be used in a wide range of settings for many different purposes in marine and offshore industry.
Through this kind of oil industry system, water is injected into the reservoir to increase pressure and stimulate the production. It is also used to displace or sweep the oil from the reservoir, pushing it towards water injection wells which are usually found in both onshore and offshore. Only 30% of the oil in a reservoir is extracted so the system is needed to increase that percentage and maintain the reservoir’s rate of production for a long period of time.
MOWE’s medium and high pressure chemical injection system / package and other wash water injection package are known in upstream or downstream oil or gas industry for its EOR, well cleaning, improving pipeline flow or oil recovery, and corrosion prevention advantages. In all of these various settings and purposes EOR is greatly enhance with higher pressure.
KEY FEATURES
- Custom-engineered skid packages
- API 675 metering pumps
- PLC / SCADA integration
- FAT & performance testing
- Hazardous area compliant
- Offshore & onshore applications
CUSTOM SKID ENGINEERING & INTEGRATION
Every industrial chemical injection system we manufacture is built to meet the specific flow rates, pressure configurations, and fluid characteristics required by your reservoir or process facility. Our capabilities include full mechanical fabrication, electrical integration, and stringent performance testing at our specialized manufacturing facilities in Singapore and Johor Bahru, Malaysia.
TYPICAL APPLICATIONS
- Scale Inhibitor Injection
- Corrosion Inhibitor Injection
- Demulsifier Injection
- Methanol Injection
- Oxygen Scavenger Injection
- Enhanced Oil Recovery (EOR)
COMPONENTS OF CHEMICAL INJECTION SYSTEMS
The following list summarizes the major components of a typical chemical injection system:
Tanks
Used to store chemicals, typically horizontal/cylindrical with various bottom/top configurations.
Pumps
Provide flow and pressure via diaphragm or plunger types with various motor power sources.
Valves and Instrumentation
Measure, monitor, and control levels, flow rates, and pressures with integrated safety alarms.
Electrical
Enables local or remote system operation, typically routed to a centralized control panel.
Skid Structure
Provides a welded structural steel base to support and protect components, often featuring a drip pan.
ADVANTAGES OF CHEMICAL INJECTION SYSTEMS
INTEGRATED INTO MODULAR PROCESS SKIDSBy 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:
WHY CHOOSE MOWE?
- Proven offshore project experience
- In-house engineering & fabrication
- FAT and commissioning support
- Compliance with international standards
- Custom-built skid packages
- Single-point project responsibility
TECHNICAL SPECIFICATIONS & ENGINEERING STANDARDS
To ensure total reliability and structural integrity in harsh marine and corrosive environments, our skids are designed and manufactured in strict compliance with international maritime and oil & gas standards:
Design Standards
API 675, ASME Section VIII, ASME B31.3, NFPA 496
Hazardous Area
ATEX, IECEx, Zone 1 & Zone 2 Explosion-Proof Rating
Materials
316L Stainless Steel, Duplex, Super Duplex, Titanium, Carbon Steel
Marine Class
ABS, DNV, Bureau Veritas (BV), Lloyd's Register
QA & Testing
Hydrostatic Testing, NDT, Dye Penetrant Testing and Factory Acceptance Testing (FAT)
ENHANCED OIL RECOVERY (EOR) OVERVIEW
Oil production is separated into three phases: primary, secondary and tertiary, which is also known as Enhanced Oil Recovery (EOR).
Primary oil recovery is limited to hydrocarbons that naturally rise to the surface, or those that use artificial lift devices, such as pump jacks. Secondary recovery employs water and gas injection, displacing the oil and driving it to the surface. According to the US Department of Energy, utilizing these two methods of production can leave up to 75% of the oil in the well.
The way to further increase oil production is through the tertiary recovery method or EOR. Measured globally, EOR can increase production from a well to up to 75% recovery.
Used in fields that exhibit heavy oil, poor permeability and irregular fault lines, EOR entails changing the actual properties of the hydrocarbons, which further distinguishes this phase of recovery from the secondary recovery method. While water flooding and gas injection during the secondary recovery method are used to push the oil through the well, EOR applies steam or gas to change the makeup of the reservoir.
TYPES OF EOR
Whether it is used after both primary and secondary recovery have been exhausted or at the initial stage of production, EOR restores formation pressure and enhances oil displacement in the reservoir. There are three main types of EOR:
Chemical Injection
Chemical injection EOR helps to free trapped oil within the reservoir. This method introduces long-chained molecules called polymers into the reservoir to increase the efficiency of water flooding or to boost the effectiveness of surfactants, which are cleansers that help lower surface tension that inhibits the flow of oil through the reservoir. Less than 1% of all EOR methods presently utilized in the US consist of chemical injections.
Gas Injection
Gas injection used as a tertiary method of recovery involves injecting natural gas, nitrogen or carbon dioxide into the reservoir. The gases can either expand and push gases through the reservoir, or mix with or dissolve within the oil, decreasing viscosity and increasing flow. Carbon dioxide EOR (CO2-EOR) is the method that is gaining the most popularity. While initial CO2-EOR developments used naturally occurring carbon dioxide deposits, technologies have been developed to inject CO2 created as by-products from industrial purposes. First employed in the US in Texas in the early 1970s, it is expected to become more widely spread in the future. Nearly half of the EOR employed in the US is a form of gas injection.
Thermal Recovery
Thermal recovery introduces heat to the reservoir to reduce the viscosity of the oil. Many times, steam is applied to the reservoir, thinning the oil and enhancing its ability to flow. First applied in Venezuela in the 1960s, thermal recovery now accounts for more than 50% of applied EOR in the US.
EOR APPLICATIONS
EOR methods are widely used both onshore and offshore, with applications including:
- Low-salinity water flooding (increase production by nearly 20%)
- Chemical injection (widely adopted in the US, <1% of all EOR methods)
- CO2-EOR (gaining popularity with increasing global adoption)
- Offshore EOR applications (expanding to new offshore developments overcoming power and space limitations of retrofitting)
PROVEN TRACK RECORD IN OFFSHORE EOR
MOWE has successfully delivered chemical injection systems and process packages for offshore oil and gas projects, including developments for Petronas and other major operators. Our engineering expertise, manufacturing capabilities and project experience ensure reliable solutions for demanding offshore applications.
