公开(公告)号：BRPI0309090B1

公开(公告)日：2016-12-13

申请号：BR0309090

申请日：2003-04-10

Applicant: BAKER HUGHES INC

Inventor： WALKOW ARNOLD M ,  BERGREN PAUL A ,  DIFOGGIO ROCCO

IPC: E21B47/10 ,  G01N1/00 ,  E21B49/10 ,  G01N21/35 ,  G01N21/41 ,  G01N21/43 ,  G01N21/55

Abstract: "método e aparelho para um refratômetro e espectrômetro de refletância atenuada de fundo de poço". a presente invenção provê um método e um aparelho para distinguir entre gás e líquido com base no índice de refração muito inferior de refração de gás. também pode ser usado para monitorar a limpeza da amostra de fluído cobre o tempo. o índice de refração de um fluido de furo de poço é determinado a partir da fração, r, de luz refletida da interface entre uma janela transparente que possui um índice de refração conhecido e este fluido. preferivelmente, o índice de refração é medido em alguns comprimentos de onda de luz para os quais o fluido não é excessivamente atenuante. entretanto, o espectrômetro de transmissão adjacente pode ser usado para corrigir a medição do índice de refração para atenuação naqueles comprimentos de onda, que ele monitora. também, este projeto de refratômetro com base na reflexão pode ser usado como um espectrômetro de refletância atenuada em comprimento de onda excessivamente atenuantes.

公开(公告)号：NO335561B1

公开(公告)日：2014-12-29

申请号：NO20045397

申请日：2004-12-10

Applicant: BAKER HUGHES INC

Inventor： DIFOGGIO ROCCO ,  WALKOW ARNOLD M ,  BERGREN PAUL A ,  PEREZ LOUIS

IPC: G01V8/02 ,  E21B49/08

公开(公告)号：NO20060625L

公开(公告)日：2006-02-09

申请号：NO20060625

申请日：2006-02-09

Applicant: BAKER HUGHES INC

Inventor： DIFOGGIO ROCCO ,  WALKOW ARNOLD M ,  PEREZ LOUIS ,  BERGREN PAUL

IPC: E21B49/10 ,  E21B47/10 ,  G01N1/00 ,  G01N21/35 ,  G01N21/41 ,  G01N21/43 ,  G01N21/55

Abstract: The invention relates to refractometry and attenuated reflectance spectrometry in a wellbore environment. Specifically, it pertains to a robust apparatus and method for measuring refractive index of fluids along a continuum (rather than in steps), and for measuring attenuated reflectance spectra, and for interpreting the measurements made with this apparatus to determine a variety of formation fluid parameters. The present invention provides a method and apparatus to distinguish between gas and liquid based on the much lower index of refraction of gas. It can also be used to monitor fluid sample clean up over time. The refractive index of a wellbore fluid is determined from the fraction, R, of light reflected off the interface between a transparent window that has a known refractive index and this fluid. Preferably, the refractive index is measured at some wavelength of light for which the fluid is not highly attenuating but is optimally attenuating. The adjacent transmission spectrometer can be used to correct the refractive index measurement for attenuation at those wavelengths, which it monitors. Also, this reflection-based refractometer design can be used as an attenuated reflectance spectrometer at highly attenuating wavelengths.

公开(公告)号：NO336109B1

公开(公告)日：2015-05-18

申请号：NO20045400

申请日：2004-12-10

Applicant: BAKER HUGHES INC

Inventor： DIFOGGIO ROCCO ,  WALKOW ARNOLD M ,  BERGREN PAUL A

IPC: E21B49/08 ,  G01V1/00 ,  G01J3/06 ,  G01J3/26 ,  G01J3/433 ,  G01J3/44 ,  G01N21/03 ,  G01N21/35 ,  G01N21/64 ,  G01N21/85

公开(公告)号：NO20045400L

公开(公告)日：2005-03-01

申请号：NO20045400

申请日：2004-12-10

Applicant: BAKER HUGHES INC

Inventor： DIFOGGIO ROCCO ,  WALKOW ARNOLD M ,  BERGREN PAUL A

IPC: G01V1/00 ,  E21B49/08 ,  G01J3/06 ,  G01J3/26 ,  G01J3/433 ,  G01J3/44 ,  G01N21/03 ,  G01N21/35 ,  G01N21/64 ,  G01N21/85 ,  G01V8/02

Abstract: The invention comprises an apparatus and method for simple fluorescence spectrometry in a down hole environment. The apparatus and method utilization of two UV light bulbs and an optically clear UV coupler and a fluid containment system. The optically clear UV coupler and fluid containment system are made of sapphire. The apparatus is attached in a manner that enables light transmitted from a light source on the far side of the fluid containment system to pass through a pathway in a plate holding the UV bulbs. UV light illuminates the fluid, which in turn fluoresces light. The fluoresced light is transmitted back towards the UV bulb mount and through the pathway towards an optical spectrum analyzer.

公开(公告)号：NO20045397L

公开(公告)日：2005-02-23

申请号：NO20045397

申请日：2004-12-10

Applicant: BAKER HUGHES INC

Inventor： DIFOGGIO ROCCO ,  WALKOW ARNOLD M ,  BERGREN PAUL A ,  PEREZ LOUIS

IPC: G01V8/02

公开(公告)号：NO20045397A

公开(公告)日：2005-02-23

申请号：NO20045397

申请日：2004-12-10

Applicant: BAKER HUGHES INC

Inventor： DIFOGGIO ROCCO ,  WALKOW ARNOLD M ,  BERGREN PAUL A ,  PEREZ LOUIS

IPC: G01V8/02

公开(公告)号：NO20044579L

公开(公告)日：2004-12-23

申请号：NO20044579

申请日：2004-10-25

Applicant: BAKER HUGHES INC

Inventor： DIFOGGIO ROCCO ,  WALKOW ARNOLD M ,  BERGREN PAUL A

IPC: G01N1/00 ,  E21B47/10 ,  G01N21/35 ,  G01N21/41 ,  G01N21/55 ,  E21B49/10 ,  G01N21/43

Abstract: The invention relates to refractometry and attenuated reflectance spectrometry in a wellbore environment. Specifically, it pertains to a robust apparatus and method for measuring refractive index of fluids along a continuum (rather than in steps), and for measuring attenuated reflectance spectra, and for interpreting the measurements made with this apparatus to determine a variety of formation fluid parameters. The present invention provides a method and apparatus to distinguish between gas and liquid based on the much lower index of refraction of gas. It can also be used to monitor fluid sample clean up over time. The refractive index of a wellbore fluid is determined from the fraction, R, of light reflected off the interface between a transparent window that has a known refractive index and this fluid. Preferably, the refractive index is measured at some wavelength of light for which the fluid is not highly attenuating. However, the adjacent transmission spectrometer can be used to correct the refractive index measurement for attenuation at those wavelengths, which it monitors. Also, this reflection-based refractometer design can be used as an attenuated reflectance spectrometer at highly attenuating wavelengths.

公开(公告)号：AU2003234713A8

公开(公告)日：2003-10-27

申请号：AU2003234713

申请日：2003-04-10

Applicant: BAKER HUGHES INC

Inventor： BERGREN PAUL A ,  DIFOGGIO ROCCO ,  WALKOW ARNOLD M

IPC: G01N1/00 ,  E21B47/10 ,  G01N21/35 ,  G01N21/41 ,  G01N21/55 ,  G01N21/43 ,  E21B49/10

Abstract: The invention relates to refractometry and attenuated reflectance spectrometry in a wellbore environment. Specifically, it pertains to a robust apparatus and method for measuring refractive index of fluids along a continuum (rather than in steps), and for measuring attenuated reflectance spectra, and for interpreting the measurements made with this apparatus to determine a variety of formation fluid parameters. The present invention provides a method and apparatus to distinguish between gas and liquid based on the much lower index of refraction of gas. It can also be used to monitor fluid sample clean up over time. The refractive index of a wellbore fluid is determined from the fraction, R, of light reflected off the interface between a transparent window that has a known refractive index and this fluid. Preferably, the refractive index is measured at some wavelength of light for which the fluid is not highly attenuating. However, the adjacent transmission spectrometer can be used to correct the refractive index measurement for attenuation at those wavelengths, which it monitors. Also, this reflection-based refractometer design can be used as an attenuated reflectance spectrometer at highly attenuating wavelengths.