专利名称：METHODS AND APPARATUS FOR THE
MEASUREMENT OF HYDROGEN SULPHIDE
AND THIOLS IN FLUIDS
发明人：LI JIANG,TIMOTHY, GARETH, JOHN
JONES,NATHAN LAWRENCE,MARY
THOMPSON,RICHARD COMPTON
申请号：AU2003254446
申请日：20030710
公开号：AU2003254446A1
公开日：
20040216
专利内容由知识产权出版社提供
摘要：An electrochemical sensor 30 for measuring hydrogen sulphide or thiols in a fluid (for example in a wellbore), comprises a containment means adapted to receive the hydrosulphide or thiol from the fluid, wherein said containment means comprises an electrically conductive porous member 32, 36. In use said porous member contains a precursor and a reaction solution which with the hydrogen sulphide or thiol cause a redox reaction resulting in an electrical current dependant on the amount of hydrogen sulphide or thiol present. The porous member 32, 36 may serve as a working electrode 40 and may be a mixture of the precursor and a binder (for example an epoxy resin). The porous member
may further comprise a counter electrode 42 and a reference electrode 44. The precursor may be selected from N,N'-diphenyl-1,4-phenylenediamine, N,N' dimethylphenyl-1,4-diamine, catechol and dopamine. The reaction solution may be an acidic solution (for example hydrochloric acid) and contain a gelling agent (for example polyacrylamide and a cross linking agent selected from formaldehyde and N,N'-
methylenebisacrylamide). The sensor may be adapted to receive the hydrogen sulphide or thiol from the fluid via a permeable membrane 34.
reaction member申请人：SCHLUMBERGER TECHNOLOGY B.V.
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