E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/00 (2006.01)
Patent
CA 2199091
Methods are disclosed for evaluating wet cutting from a well borehole to determine the hydrocarbon content of the earth formations penetrated by the well borehole. The wet cuttings to be measured are mixed with a polar hydrocarbon solvent which has both hydrophilic and hydrophilic properties. The solution of the solvent and cutting is filtered and then its emission (fluorescence) spectrum is measured by irradiating it with ultraviolet radiation excitation at wavelengths at which most petroleum compounds fluoresce. The hydrocarbon content of the sample wet cuttings is then determined by comparing its fluorescence emission to the emission fluorescence of known samples.
Description des méthodes d'évaluation des déblais de forage humides d'un trou de forage d'un puits pour déterminer le contenu en hydrocarbures des formations traversées par le trou de forage. Les déblais de forage humides à étudier sont mélangées à un solvant polaire à base d'hydrocarbures ayant à la fois des propriétés hydrophiles et ----------------. La solution constituée du solvant et des déblais de forage est filtrée et, ensuite, son spectre d'émission (fluorescence) est mesuré en le soumettant à une excitation par rayonnement ultraviolet à des longueurs d'onde auxquelles la plupart des composés de pétrole émettent une fluorescence. Le contenu en hydrocarbures de l'échantillon de déblais de forage humides est alors déterminé en comparant l'émission de fluorescence à l'émission de fluorescence d'échantillons connus.
Delaune Patrick Lee
Mckinzie Howard Lee
Spilker Kerry Kennedy
Smart & Biggar
Texaco Development Corporation
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