| 摘要 |
The invention relates to a method for measuring the absorption of a flow of photons through the liquid (76) which seeps into an oil well, in order to determine the composition of the liquid, and to a probe for implementing this method. The flow of photons produced by a source such as an X-ray generator (80) irradiates the whole of the fluid surrounding the probe (60), and the energy of the photons is below a predetermined threshold, preferably 100 keV, so that the photons that reach the walls (44) of the well are almost all absorbed. <IMAGE>
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