COMPOSITIONS OF HETEROCYCLIC COMPOUNDS AND USES AS SULFIDOGENESIS INHIBITORS
申请人:ChampionX USA Inc.
公开号:US20210238068A1
公开(公告)日:2021-08-05
The present disclosure generally relates to compositions and uses of sulfidogenesis inhibitor compounds of Formulae 1 and 2 for preventing sulfidogenesis, i.e., the reduction reaction of a sulfur-containing compound by sulfur-utilizing prokaryotes that produce sulfide species such as hydrogen sulfide, during enhanced oil recovery processes. A method for inhibiting or decreasing microbial sulfide production by sulfur-utilizing prokaryotes includes addition of an effective amount of sulfidogenesis inhibitor compounds of Formulae 1 and 2 to the fluid that is injected into a sulfidogenic reservoir system during enhanced oil recovery. For example, the compounds can be used as sulfidogenesis inhibitors in a water injection system for use in a hydrocarbon extraction system or a hydrocarbon production system. Thus, these compositions can be effectively used as inhibitors of biogenic hydrogen sulfide generation in oilfield fluids.
Synthesis of 3-(Alk-2-yn-1-yl)-1,3-Oxazolidines Using Copper-Containing Catalysts
作者:G. P. Khabibullina、V. M. Yanybin、A. G. Ibragimov、U. M. Dzhemilev
DOI:10.1007/s10593-014-1527-y
日期:2014.8
A selective method for the synthesis of 3-(alk-2-yn-1-yl)-1,3-oxazolidines has been developed by the reaction of bis(oxazolidin-3-yl)methanes with terminal acetylenes with copper-containing catalysts. The reaction of terminal acetylenes with optically active bis((4R)-4-ethyl-1,3-oxazolidin-yl)methane led to the formation of (4R)-3-(2-alkynyl)-4-ethyl-1,3-oxazolidines.
Pevarello, Paolo; Pinciroli, Vittorio; Varasi, Mario, Journal of Heterocyclic Chemistry, 1994, vol. 31, # 4, p. 1089 - 1092
作者:Pevarello, Paolo、Pinciroli, Vittorio、Varasi, Mario