A thermodynamic inhibitor - methanol is used for hydrates control both at gas-gathering pipelines and gas
conditioning / treatment field plants of Novatek JSC. Due to severe climate conditions and absence of
serious infrastructure high operation costs for hydrate control take place. For reducing inhibitor losses some
new technological solutions were proposed including recycling and regeneration of saturated methanol. A
small module for producing methanol at field conditions was designed. Technological schemes for
methanol injection and recirculation are discussed. These technologies reduce methanol losses.
Small methanol-producing plant at Yurkharovskoe gas-condensate field (12.5 million ton methanol per
year) integrated with field gas treatment plant is presented. The technology includes producing converted
gas (syngas) from natural gas, catalytic process for raw methanol synthesis and rectification of raw
methanol at final stage. Some particularities of the integrated technology are as follows. Not needs for
preliminary purification of required raw materials (natural gas and water). Dried natural gas after
conditioning (without any traces of sulfuric compounds) and pure water from simplified water treatment
block are used. Rectification of raw methanol is combined with rectification of saturated methanol from gas
treatment plant. Economic estimations show that the integrated methanol-producing technology and
optimization of methanol circulation in technological processes essentially reduce capital and operational
costs for hydrate control at northern gas and gas-condensate fields.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:BVAU.2429/2349 |
| Date | 07 1900 |
| Creators | Yunosov, Rauf, Istomin, Vladimir, Gritsishin, Dmitry, Shevkunov, Stanislav |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | text |
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