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公开(公告)号：US5711900A
公开(公告)日：1998-01-27
申请号：US564000
申请日：1995-11-29
申请人： Timothy G. J. Jones
发明人： Timothy G. J. Jones
IPC分类号： C07C53/126 , C07C53/128 , E21B47/10 , G01N31/00 , C09K7/00
CPC分类号： E21B47/1015 , C07C53/126 , C07C53/128 , Y10S507/905
摘要： A tracer solution suitable for use in measuring flow velocities in a borehole, includes: a) a gadolinium salt of a carboxylic acid of general formula ##STR1## where R is an alkyl of not less than four carbon atoms, typically C4 or C5 alkyl, and R.sub.1 and R.sub.2 are hydrogen or an alkyl group, typically hydrogen, methyl or ethyl; b) a free branched-chain carboxylic acid such as an excess of the acid used to form the Gd salt; and c) a non-polar solvent such as hexane or heptane. The Gd content of the solution should be not less than about 50 g/l and is best when it is as high as possible, for example greater than 100 g/l, and the viscosity should be less than 20 cP.
摘要翻译： 适用于测量钻孔流速的示踪剂溶液包括：a）通式为羧基的羧酸钆盐，通常为C 4或C 5烷基，R 1和R 2为氢或烷基，通常 氢，甲基或乙基; b）游离的支链羧酸，例如用于形成Gd盐的过量的酸; 和c）非极性溶剂如己烷或庚烷。 溶液中的Gd含量应不小于约50g / l，当其尽可能高，例如大于100g / l时最好，粘度应小于20cP。
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12.发明授权Method of monitoring the drilling operations by analyzing the circulating drilling mud 失效通过分析循环钻井泥浆监测钻井作业的方法
公开(公告)号：US4878382A
公开(公告)日：1989-11-07
申请号：US263499
申请日：1988-10-27
CPC分类号： E21B44/00 , E21B21/08 , E21B49/005 , G01N30/02
摘要： Samples of mud are taken periodically at the surface at one or several locations where the mud does not contain cuttings anymore. The mud samples are analyzed on the rig site to determine the successive values, as a function of time or depth, of a parameter representative of the weight of the fine solids present in the mud. In one aspect of the invention the weight of the fine solids present in the mud is determined by measuring the weight of the liquid phase of the mud and the weight of the electrolyte dissolved in a known weight of mud. Preferably the weight of the liquid phase is determined by drying to constant weight a given weight of mud and the weight of electrolyte is determined by chemical analysis of the mud filtrate using an ion chromatography system on the rig site.
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