公开(公告)号：US20210222796A1

公开(公告)日：2021-07-22

申请号：US16336637

申请日：2017-09-26

申请人： Equinor Energy AS

发明人： Christian Rosenkilde ,  Patrick Benjamin Müller

IPC分类号： F16K47/08 ,  B01F5/06 ,  E21B21/10 ,  E21B43/16

摘要： A method of reducing the pressure of a liquid includes the steps of providing a conduit containing a packing material, such that a large number of small passages are formed in the packing material, and passing the liquid through the conduit and the packing material. The amount of packing material through which the liquid flows can be varied to vary the pressure drop experienced by the liquid passing through the packing material. The reduction in pressure achieved may be stepwise (discrete) or continuous. The method may be used to reduce the pressure of an aqueous polymer solution for use in a polymer flood technique for oil extraction, and allows the pressure to be reduced without damage to the polymer.

公开(公告)号：US11655914B2

公开(公告)日：2023-05-23

申请号：US16336637

申请日：2017-09-26

申请人： Equinor Energy AS

发明人： Christian Rosenkilde ,  Patrick Benjamin Müller

IPC分类号： B01F25/452 ,  F16K47/08 ,  E21B21/10 ,  E21B43/16 ,  B01F101/00

CPC分类号： F16K47/08 ,  B01F25/4524 ,  E21B21/106 ,  E21B43/16 ,  B01F2101/505

摘要： A method of reducing the pressure of a liquid includes the steps of providing a conduit containing a packing material, such that a large number of small passages are formed in the packing material, and passing the liquid through the conduit and the packing material. The amount of packing material through which the liquid flows can be varied to vary the pressure drop experienced by the liquid passing through the packing material. The reduction in pressure achieved may be stepwise (discrete) or continuous. The method may be used to reduce the pressure of an aqueous polymer solution for use in a polymer flood technique for oil extraction, and allows the pressure to be reduced without damage to the polymer.