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公开(公告)号：US10738601B2
公开(公告)日：2020-08-11
申请号：US15575666
申请日：2016-04-22
发明人： Eric Lecolier , Patrick Gateau
IPC分类号： E21B49/00 , E21B47/10 , C09K11/08 , C09K8/03 , C09K8/035 , E21B21/06 , E21B37/06 , E21B41/02 , E21B43/16 , E21B43/25
摘要： The present invention concerns a process for developing a subterranean formation, in which at least one fluid is injected. In accordance with the invention, the fluid comprises at least one additive, the additive being labelled with at least one luminescent semiconductor nanocrystal (fluorescent or phosphorescent). In this manner, and by optical analysis of the presence of luminescent semiconductor nanocrystal in the fluid recovered from the subterranean formation, the presence and/or quantity of additive in the recovered fluid can be determined. Given that the semiconductor nanocrystal is either phosphorescent or fluorescent, the additive is rendered readily detectable and quantitatively determinable in the fluids recovered from the subterranean formation.
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公开(公告)号：US10850233B2
公开(公告)日：2020-12-01
申请号：US15770801
申请日：2016-10-20
摘要： The present invention describes a fluid which is suitable for the decontamination of heat engines which can carry out both the catalytic reduction of oxides of nitrogen (NOx) contained in exhaust gases and assist in the regeneration of the particulate filter (PF), said fluid being in the form of a stable suspension of colloidal particles, these colloidal particles being dispersed in an aqueous solution containing at least one reducing agent or at least one precursor of a reducing agent for NOx. The invention also describes several embodiments for the preparation of said fluid.
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