Reciprocating compressors in natural gas gathering and processing must accommodate great variety in gas composition, including non-hydrocarbons such as hydrogen sulfide, carbon dioxide, and water vapor. Shale gas often contains particulates and contaminants.
Add to this the use of portable compression equipment, or systems that are designed to be scalable as field pressure declines, and reciprocating compressors and their components cover a wide range of operability.
Gas producers also face national and local regulations regarding emissions and air quality, and reciprocating compressors are frequently targeted to meet reduction goals.
Cook Compression offers system upgrades and technical support to help natural gas customers meet their emissions objectives, including:
- Repair services to restore components to factory specifications and clearances
- Cylinder overhauls and testing to verify sealing performance
- Seal-enhancing rod coatings
- COOK CLEAN purged packing cases to prevent fugitive emissions
- Advanced materials for rings and riders to reduce wear
- Sentrix™ thermal mass flow meters to detect and quantify leakage
Cook Compression also has a strategic partnership with Windrock™, specialists in monitoring and diagnostics, which can help pinpoint mechanical and performance issues contributing to emissions.
Along with impurities and potential debris in the gas, reciprocating compressors in natural gas gathering and processing must withstand high speeds, and valve failures are common.
The Cook Compression Ring Damped Valve provides a robust solution that reduces impact forces and protects against impact fatigue. In addition, the Ring Damped Valve design increases the flow area – significantly reducing the horsepower required to move gas.
For service in dirty natural gas, the MOPPET® valve offers a rugged construction able to extend service life, even in the presence of debris.
Reciprocating compressors in gas lift applications commonly rely on an Optima™ plate valve.