Gillis Amine Plant: Phase I and II

Evers & Sons Inc. provided full field installation services for the Gillis Treating Plant, including construction of an 8,000 GPM amine treating facility, a core component of Momentum Midstream’s NG3 Project linking the Haynesville Shale to Gulf Coast LNG markets. The facility was originally designed for 1.7 Bcf/d of throughput, with the expansion incorporating additional equipment to increase total processing capacity to approximately 2.3 Bcf/d.

PHASE I:

Amine System – Key Equipment (Per Train):

• (3) Amine contactors
• (3) Treated gas coolers
• (3) Inlet skids
• (3) Amine circulation pumps
• (6) Lean amine coolers
• (1) Amine flash drum
• (1) Amine charcoal filter
• (1) Reflux skid
• (1) Amine surge tank
• (3) Heat medium heaters
• (2) Amine reboilers
• (2) Regen still towers
• (4) Reflux condensers

BOP Mechanical Equipment – Key Equipment:

• (1) Inlet separator
• (8) TEG dehy packages
• (5) CO₂ screw compressors | (2) CO₂ recip compressors
• (2) CO₂ dehy packages | (4) BTEX scrubber/cooler packages
• (1) Flare
• (1) BTEX flare
• (1) RO water treatment system | (1) instrument air skid
• (1) 210 BBL amine storage tank | (5) 750 BBL closed drain tanks
• (3) 750 BBL raw water tanks | (3) 750 BBL RO water tanks
• (3) Cummins-powered backup generators
• (3) PDC buildings

Scope of Work:

• Installation of ± 60,000 LF of prefabricated pipe (2”–36”)
• ± 152,171 field weld inches
• ± 7,500 prefabricated pipe spools
• ± 800 tons of structural steel fabrication and erection
• ± 2,900 CY of concrete
• Flange torquing (5,275 flanges)
• QA/QC management and job books
• Oversight of I&E partner
• Number of welds: ±6,200

Additional Scope:

• Turnkey sub station construction
• Control room & office building
• Warehouse

PHASE II: Expansion Scope

• (2) 5,000 HP electric drive residue compression – (residue compression increases capacity to 2 Bcf/d)
• (2) H2S treating units for CO₂ stream treating
• (1) CO₂ TEG dehydration unit

This greenfield facility serves as the core of NG3’s carbon capture and gas treating system, integrating CO₂ amine treating, dehydration, and compression to deliver clean natural gas while maintaining a net-negative CO₂ emission profile.