公开(公告)号：EP0902859A1

公开(公告)日：1999-03-24

申请号：EP97924133.0

申请日：1997-05-29

申请人： BP EXPLORATION OPERATING COMPANY LIMITED ,  Collag Limited

发明人： COLLINS, Ian, Ralph ,  RAVENSCROFT, Paul, Derek ,  BATES, Christopher, Ian

IPC分类号： C09K8

CPC分类号： C09K8/92 ,  C09K8/536 ,  C09K8/54 ,  Y10S507/901 ,  Y10S507/902 ,  Y10S507/906 ,  Y10S507/939

摘要： An oil field production chemical, especially a scale inhibitor, is in the form of particles thereof carrying a coating e.g. of a dispersing agent. The coating may be polymeric such as an oligomeric polyacid polyester, a polymeric alkoxylated alcohol or a fatty acid polyamine condensate or it may also be a surfactant and may be used in the form of a suspension in an inert oil, such as diesel oil or kerosene which may be injected into a subterranean formation to inhibit the formation of deposits, e.g. scale in oil wells over a longer period than compounds free of the coating.

公开(公告)号：EP0902859B1

公开(公告)日：2002-08-28

申请号：EP97924133.8

申请日：1997-05-29

申请人： BP EXPLORATION OPERATING COMPANY LIMITED ,  Collag Limited

发明人： COLLINS, Ian, Ralph ,  RAVENSCROFT, Paul, Derek ,  BATES, Christopher, Ian

IPC分类号： E21B37/06 ,  E21B41/02 ,  E21B43/25

CPC分类号： C09K8/92 ,  C09K8/536 ,  C09K8/54 ,  Y10S507/901 ,  Y10S507/902 ,  Y10S507/906 ,  Y10S507/939