Patent ID: 8947666
Filing Date: 2015-02-03
Classification: E21B,G01N,Y10T

Abstract:
1. A system for determining at least one property of crude petroleum comprising: an apparatus for applying incident light to the petroleum to cause the petroleum to produce interacted light; an optical calculation device for performing a regression calculation on the interacted light, the optical calculation device being responsive to the interacted light incident thereon to produce at least one output light signal manifesting the calculation and the corresponding at least one property; a housing containing the apparatus and the optical calculation device, the housing comprising a pressure balancing mechanism for compensating for pressure differentials in the housing and in the petroleum; and a signal processing arrangement for determining the at least one property from the at least one output light signal, wherein the optical calculation device comprises a multivariate optical element that comprises a plurality of optical refraction layers, the layers manifesting a multivariate calculation wherein the result of the calculation correlates with a property of the petroleum, and wherein the petroleum is flowing in a pipe and has an interface surface with the pipe, the apparatus comprising a light source for providing the incident light to the petroleum interface surface at one location of the pipe and an internal reflectance element coupled to the pipe at the one location for applying the incident light to the interface surface and then alternatively receiving light from and reflecting light to the interface surface continuously from the applied incident light to generate the interacted light.