Silleno LLP is a Kazakhstan-based petrochemical joint venture focused on developing and operating a polyethylene production complex in the Atyrau region. The venture was established by KazMunayGas and SIBUR to expand polyethylene production capacity in Kazakhstan.
The planned complex includes an ethane-to-ethylene steam cracker and downstream polyethylene units, located within the National Industrial Petrochemical Technopark (Special Economic Zone) in Atyrau. Silleno oversees project development, construction, and prospective operations, working with international technology licensors and engineering partners to implement modern process technologies.
Also known as Sileno LLP and Силлено.
chemXplore tracks 4 projects involving Silleno LLP, of which 4 are active.
Silleno LLP's role on them: Owner and Offtaker.
4 new construction.
2 of the active projects carry no start-up date yet.
Contractors, licensors, and offtakers are recorded on all 4 of them For subscribers
Targeting: Ethane (2), Ethylene (1), Nitrogen (1), Polyethylene (1), Propane (1)
2D (900 km) and 3D (300 km2) seismic work ahead of a 7,000 m ultra‑deep well; 1.25 MMtpa PE plant >34% complete; Aktobe output target 800 Kt by 2028; CCUS working group proposed.
A 101.8 m, 1,500 t fractional column for ethylene separation arrived on site, built at AtyrauNefteMash and moved on an SPMT to the National Industrial Petrochemical Technology Park.
Second-quarter comparable growth accelerated; operating margin, recurring profit and cash flow improved while record investments and the DIG Airgas deal closed.
€70M project to build two large, high‑purity nitrogen units at NIPT SEZ to support Silleno’s world‑scale polyethylene plant; commissioning targeted end‑2028.
Ground‑breaking starts works on Tengiz Gas Separation Complex; facility targets ≥98% ethane recovery and will feed Silleno II polyethylene output; about 400 Kazakh firms attended the supply‑chain forum.
The new center will focus on technology transfer, personnel training, and industrial safety, enhancing skills for modern petrochemical processes.
About 700 attendees and 500+ local firms gathered to connect Kazakh suppliers to the Silleno Petrochemical project and launch a four‑year training plan for 60 engineers.
The Tengiz Gas Separation Complex will support the Silleno petrochemical plant, enhancing Kazakhstan's industrial growth with advanced gas and petrochemical technology. Completion by Q1 2029.
By country, the most active first. active / all projects
