- 36-Inch Pipeline
To meet the growing production of natural gas in the Denver-Julesburg Basin, we are working with Tallgrass Energy, providing engineering, design and procurement services on a 36-inch, 70-mile pipeline to tie in several gas processing facilities feeding the Rockies Express (REX) pipeline. The project is regulated by the Federal Energy Regulatory Commission (FERC). The scope also includes a compressor station and five measurement facilities ranging from 200 MMSCFD to 1 BCFD.
The meter stations include overpressure protection (control valve skids), ultrasonic flow meter skids, launcher/receiver skids, dual classification buildings, coalescing filter/separators, and natural gas analyzers (oxygen, moisture, gas quality, H2S). The booster station includes new water coolers, compressor and maintenance buildings, suction and discharge filter separators and six new reciprocating compressors providing an additional 32,100 HP. Over the 70-mile route, the pipeline crossed several obstacles, including the South Platte River, requiring 18 horizontal directional drills, three actuated mainline valves and multiple auger bore crossings.
Highlights and successes:
- Providing design and construction services on an accelerated schedule, including completing the initial pipeline design for the FERC fling in four months to meet the required in-service date.
- Due to limited internal staff, Tallgrass tasked our team with the procurement of 40 material/equipment packages managed and expedited by our procurement department.
- Participated in multiple open houses as part of the project’s public outreach effort and client’s effort to build community support.
- To cross the South Platte River successfully, we designed a 5,000-foot, 150-foot-deep horizontal directional drill.
- To meet the demands of gas suppliers, we designed meter stations ranging in size from 200 MMSCFD to 1BCF.
- Tallgrass was unaccustomed to projects of this size and had built very few new pipelines since the inception as a transmission operator that broke from Kinder Morgan, requiring us to develop the template in which they build new pipeline construction projects.
- Unexpected geotechnical conditions were found at the South Platte River requiring a deeper and longer drill to avoid gravel/cobble in the subsurface.
- Endangered/protected bird species including the bald eagle required us to work with suppliers to build a noise mitigation wall.
- Purchase and delivery of several million in materials and equipment.
- Overcame initial public opposition to project through public relations and community outreach.
- Participated and successful meeting with several stakeholders to receive approval on the construction of the project along the route
- Engineering design
- Project management
- Project controls