Pipeline Evacuation & Natural Gas Cross-Compression Services
North America’s Cross-Compression & Pipeline Degassing Experts
For over 30 years, Envent Corporation has been the premier provider of mobile pipeline degassing services, odor control, and pipeline blowdown mitigation for the Oil & Gas, Natural Gas Pipeline, and Petrochemical industries. In 2020, we expanded our specialized capabilities to include Natural Gas Pipeline Recompression, Cross-compression, and Pipeline Evacuation powered by a latest fleet of mobile compression units.
Whether you are managing distribution, storage, or transmission systems, our complete mobile services make sure your project stays on track and in full regulatory compliance.
Achieving Net-Zero Methane Emissions
Distribution, storage, and transmission operators routinely need to reduce line pressure to provide safe working conditions during maintenance, repair, and replacement activities. Traditionally, this required direct atmospheric discharge, flaring, or thermal oxidation.
However, the May 2023 PHMSA MEGA Rule requires enhanced measures to reduce pipeline failures and emissions. To capture carbon releases and provide a Net-ZERO methane release, Envent provides the EPA Best Management Practice of cross-compression. By removing methane from a section of pipeline and transferring it back into an active section, we help our customers achieve decarbonization goals and help methane reductions throughout the U.S. and Canada.
Why Choose Envent for Pipeline
Cross-Compression
- Advanced Mobile Fleet
Envent developed the most latest mobile compression units in North America, capable of processing vapors from 1400 PSIG down to 5 PSIG in just a matter of hours. - Environmental Leadership
We help our clients achieve decarbonization goals by providing a clean alternative to flaring or thermal oxidation, making sure a Net ZERO carbon release. - Decades of Technical Authority
With over three decades of experience in the Petrochemical and Refinery industry, we bring a level of expertise to pipeline evacuation that generalists cannot match. - PHMSA Mega Rule Expertise
Our systems and processes are engineered to make sure your operations meet the latest federal safety and emission standards. - Rapid Deployment & Efficiency
We provide a complete turnkey service that minimizes downtime and improves the recapture of your natural gas assets.
Specialized Compression Solutions
Helping Customers Achieve Net-Zero Carbon Emissions and Decarbonization
Whether you need to blow-down methane emissions in a maintenance emergency or a planned event, between compression stations, or from pipeline distribution, transmission, or storage, Envent provides the EPA Best Management Practice of natural gas cross compression.
Our methane mitigation services help our customers reach the collective goal of decarbonization by reducing emissions associated with the production, processing, transmission, and distribution of the U.S. onshore natural gas value chain. We assist our customers to help methane reductions from oil and gas operations throughout the US and Canada, making sure your project meets the highest environmental compliance standards for Net-Zero carbon emissions.
Cutting-Edge Mobile Compressors for Pipeline Evacuation
We are proud to present our new mobile compressors, equipped with Caterpillar engines and Ariel compressors integrated with our in-house engineered safety systems and PLC controls. All vessels meet ASME code, and all systems have been strictly tested to make sure top performance, safety, and operational efficiency.
With our team of OQ certified operators, we mobilize anywhere in North America within hours. When a natural gas pipeline requires maintenance, we connect our high-pressure equipment, compress the gas, and transfer it back to an active section of the pipeline. This cross-compression method not only saves time and improves site safety but also helps you save money while safeguarding the environment through methane mitigation. By using this complete recovery process, we help operators achieve decarbonization and Net-Zero goals.
Featured case study
The Problem : A midstream operator needed to degas a gasoline product pipeline for urgent maintenance. The project faced strict emission limits and a tight schedule that prohibited traditional atmospheric venting or slow, inefficient purging methods.
What We Did : Envent deployed a complete solution using high-capacity EMECS thermal oxidizers. We handled the rapid depressurization and vapor destruction, utilizing specialized liquid knock-out systems to ensure a steady, safe flow of hydrocarbons to the destruction unit.
The Result : The pipeline was cleared and made safe for hot work in record time, significantly shortening the maintenance window. We guaranteed 100% regulatory compliance with >99.9% destruction efficiency and zero safety incidents.
Pipeline Degassing & Evacuation Services
Since 1992, Envent Corporation has helped oil & gas customers achieve emissions standards and maintain full regulatory compliance with local, state, and federal environmental rules throughout North America. We provide complete and economical methods for decarbonization, including specialized pipeline hydrostatic test water management.
Our Core Pipeline Capabilities
- Pipeline Evacuation with ZERO Emissions
Achieving Methane Mitigation and supporting the Clean Energy Transition by recapturing product rather than flaring. - Midstream, Transmission & Distribution
Complete support for all sectors of the natural gas value chain. - 1200 PSIG to 0 PSIG Services
High-capacity 1, 2, and 3-stage compressors capable of full line drawdown. - Hydrostatic Testing Support Services
Integrated water treatment and vapor control for pipeline integrity testing. - Oil Field Drawdown Gas Compression
Mobile solutions for upstream gathering and storage assets. - Odor Control & Degassing
Expert management of mercaptans and hazardous volatile organic compounds (VOCs).
Technical Specifications & Safety Standards
- PLC Controlled Systems
Latest automation for precise pressure management and monitoring. - Mobile Fleet
Large-scale units (Trailer dimensions: 48’ L X 8’ W X 13’ H) with ASME certified piping. - OQ Qualified Technicians
Every project is managed by highly trained, OQ certified operators. - Rapid Mobilization
Planned positioning allows us to mobilize anywhere in North America, including all 50 states and Canada, within hours.
PHMSA Mega Rule Compliance Expertise: Recently, the Pipeline and Hazardous Materials Safety Administration (PHMSA) issued its final rule expanding Federal safety oversight to all onshore gas gathering pipelines. Known as the PHMSA Mega Rule, this ruling adds a lot of scope to pipeline integrity management requirements for tens of thousands of miles of previously unregulated lines.
As a STAR Program Participant, Envent makes sure that pipeline operators can accurately report safety information for the more than 450,000 miles of gas gathering lines now governed by Federal requirements. By using our cross-compression technology, you make sure your maintenance activities remain Mega Rule compliant while reaching your net-zero goals.
Featured case study
The Problem : A Gulf Coast refinery needed to urgently depressurize a 2-mile, 12-inch propane line holding liquid at >200 psig. With an approaching tropical storm and a competitor taking 4 days for a smaller job, the refinery needed a complete solution to avoid weeks of delay.
What We Did : Envent mobilized high-rate LPG vaporizers and an EMECS-70 thermal oxidizer to handle the vapors. We converted liquid to gas at maximum safe rates and utilized a nitrogen purge package to guarantee a final sweep to 0% LEL.
The Result : The line was cleared in under 8 hours, 4x faster than the competition. We beat the tropical storm, achieved 100% regulatory compliance with zero flaring, and set the fastest documented record for liquid propane evacuation on the Gulf Coast.
Recent Compression & Pipeline Projects
Envent’s project history reflects our status as North America’s leading authority in zero-emission pipeline evacuation. From high-pressure interstate transmissions to emergency leaks, our OQ-qualified technicians ensure that methane is recaptured and redirected, rather than flared or vented.
Pipeline Evacuation FAQs
Is Envent PHMSA compliant?
Yes, our services are fully compliant with the PHMSA Mega Rule, helping operators manage the 450,000 miles of gas gathering lines now under Federal reporting requirements.
Where do you operate?
We maintain operations in all 50 states and Canada, with the ability to mobilize within hours.
Can you achieve Zero Emissions?
Yes, our cross-compression technology is designed for Net-ZERO methane release by recapturing gas instead of flaring.
What is pipeline cross-compression, and how does it support Net-Zero goals?
Cross-compression is an EPA Best Management Practice where methane is removed from a pipeline section scheduled for maintenance and transferred into an adjacent active section. This process captures carbon releases that would otherwise be flared or vented, providing a Net-Zero methane release and supporting corporate decarbonization goals.
How does the PHMSA Mega Rule impact my pipeline maintenance?
The May 2023 PHMSA Mega Rule expanded federal safety and emission oversight to over 450,000 miles of previously unregulated onshore gas gathering lines. Envent’s cross-compression technology Gurantee that your maintenance activities remain compliant with these enhanced reporting and emission reduction requirements.
What pressure ranges can Envent’s mobile compression units handle?
Our latest mobile fleet features high-capacity 1, 2, and 3-stage compressors capable of processing vapors from 1,400 PSIG down to 0 PSIG. This allows for a complete line drawdown in a matter of hours.
Can Envent mobilize for emergency pipeline blowdowns?
Yes. As a leading emergency response contractor, we can mobilize OQ-qualified technicians and mobile compression units anywhere in North America within hours. Our planned equipment positioning guarantees rapid deployment for both emergencies and planned maintenance.
What equipment specifications define your mobile compression fleet?
Our new mobile compressors utilize Caterpillar engines and Ariel compressors integrated with in-house engineered PLC controls and safety systems. All vessels meet strict ASME codes to make sure top performance and operational safety.
Are your technicians qualified to work on DOT-regulated pipelines?
Every project is managed by highly trained, OQ-certified (Operator Qualified) professionals. Our team brings decades of technical authority to pipeline evacuation, ensuring that all work meets the highest federal safety standards.
How does cross-compression compare to traditional flaring or thermal oxidation?
While flaring and thermal oxidation destroy vapors, cross-compression is a clean alternative that recaptures your natural gas assets. This not only protects the environment through methane mitigation but also helps operators save money by retaining the product.
Does Envent provide support for pipeline hydrostatic testing?
Yes. We offer complete hydrostatic test water management, including integrated water treatment and vapor control, to support pipeline integrity testing.
Achieve Net-Zero Methane Emissions Today
Stop flaring your assets and start recapturing them. Partner with Envent Corporation to provide a complete cross-compression strategy that guarantees PHMSA Mega Rule compliance. Our OQ-qualified technicians handle high-pressure evacuations with the industry’s latest mobile fleet to improve your project timeline and reach your decarbonization goals.
