We streamline the oil and gas industry
With a compact gas compression and separation unit (CSU), we optimize oil and gas production by replacing traditional centrifugal compressors with a water-injection–based system.
About Us
Introduction to the compact gas compression and separation unit (CSU)
How to combine the complex and costly gas-handling system used in oil and gas production into one compact unit?
The concept is based on compressing separated gas from the wellstream using a driving fluid (water or glycols). The main difference from a traditional separation system is the replacement of conventional centrifugal compressors with pumps, using liquid as the driving compression medium.
In 2018, a K-Spice Dynamic simulation model was built to verify functionality and design. This dynamic model makes it possible to prove the concept and create a base case including fluid properties, sizing, control philosophy, and energy budget. An updated patent application was filed in 2018, ref. P28738NO00.
Stran Energy AS was certified according to ISO 9001:2015 in March 2019.
CSU System
CSU System
The cost-efficient and safe alternative for gas compression
Straen Energy tailors gas compression solutions to your needs.
Increased efficiency and flexibility
Eliminating compressors provides higher efficiency and flexibility in terms of pressure differential and throughput, without the need for recycling at low gas volumes.
Lower costs
Reduced equipment requirements, simplified sealing solutions, and less maintenance lead to significant savings in both CAPEX (up to 50%) and OPEX.
Increased safety and compact design
A compact design with fewer components reduces the risk of gas leaks and increases process safety, while also requiring less space and weight.
Operational Sequences
The Steps in Operational Sequence of Seperation of oil, gas, and water
Efficient processing of the wellstream is crucial in oil and gas production. To ensure optimal separation and further handling of gas, oil, and water, carefully planned operational sequences are followed. Below are the main steps in this process, including wellstream separation, pressure boosting, and liquid handling.
Separation of the wellstream
The wellstream—consisting of a mixture of gas, oil, and water—is directed into cylindrical separators known as CCVs (Cylindrical Compression Vessels). These separators are specially designed to ensure effective phase separation, where gas naturally separates and rises to the top while oil and water collect at the bottom. This process enables precise and efficient isolation of the gas from the liquids, which is essential for further processing and production optimization.
Pressure boosting through water injection
When the separator is filled and the pressure is balanced, the inlet and outlet valves close to prepare for the next step. Water is then pumped into the separator to gradually increase the pressure on the gas collected in the upper section. When the pressure exceeds 150 bar, a check valve opens, allowing the compressed gas to flow into a scrubber. The scrubber cleans the gas by removing impurities, preparing it for further use—either for gas lift in production or for export.
Handling of liquids
After the gas has been removed, the pressurized water—along with produced oil and water—is drained to a second-stage separator for further processing.
Explore Our System & Technology
This sub headline is a text block global style that is larger and bolder.
Compact CSU unit
Developed by Straen Energy, the system combines complex gas and liquid processes into a single compact unit, aiming to optimize separation and compression for oil, gas, and hydrogen.
CSU System
CSU technology
The Compact Compression and Separation Unit (CSU)® is an innovative technology designed for efficient compression and separation of gases and liquids.
CSU Technology
Capture and seperation
CSU enables safe and efficient compression of CO₂ for both storage and transport, and meet the strict environmental requirements, reduce CO₂ taxation and contributing to sustainable solutions.
CSU Process
Hydro compression
Groundbreaking solution for compressing large volumes of hydrogen to high pressures (>100 bar) with minimal energy use and without dynamic mechanical seals in gas handling.
CompressionExplore the remarkable benefits of CSU technology
The Carbon Compression & Seperation Unit (CSU) unit provides a compact, lightweight platform that combines superior process safety standards with lower costs and reduced carbon footprint.
Get in TouchTalk to Our Experts
Feature your latest articles
