BRPI0410121A - método e aparelho para um espectrÈmetro a laser de diodo sintonizável para análise de amostras de hidrocarboneto - Google Patents

método e aparelho para um espectrÈmetro a laser de diodo sintonizável para análise de amostras de hidrocarboneto

Info

Publication number
BRPI0410121A
BRPI0410121A BRPI0410121-9A BRPI0410121A BRPI0410121A BR PI0410121 A BRPI0410121 A BR PI0410121A BR PI0410121 A BRPI0410121 A BR PI0410121A BR PI0410121 A BRPI0410121 A BR PI0410121A
Authority
BR
Brazil
Prior art keywords
analysis
sample
diode laser
borehole
hole
Prior art date
Application number
BRPI0410121-9A
Other languages
English (en)
Inventor
Rocco Difoggio
Original Assignee
Baker Hughes Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of BRPI0410121A publication Critical patent/BRPI0410121A/pt

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00Prospecting or detecting by optical means
    • G01V8/02Prospecting
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B49/00Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08Obtaining fluid samples or testing fluids, in boreholes or wells
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Geophysics (AREA)
  • Analytical Chemistry (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Electron Tubes For Measurement (AREA)

Abstract

"MéTODO E APARELHO PARA UM ESPECTRÈMETRO A LASER DE DIODO SINTONIZáVEL PARA ANáLISE DE AMOSTRAS DE HIDROCARBONETO". A presente invenção refere-se a um aparelho e método no fundo do furo para a espectroscopia de ultra-alta resolução usando um laser de diodo sintonizável (TDL) para analisar uma amostra do fluido de formação no fundo do furo ou na superfície para determinar os parâmetros do fluido de formação. Além da espectroscopia de absorção, a presente invenção pode executar a espectroscopia Raman no fluido, varrendo o comprimento de onda do TDL e detectando a luz difundida por Raman usando um detector de faixa estreita em um comprimento de onda fixo. O espectrómetro analisa a amostra do fluido da perfuração de poço pressurizada que é coletada no fundo do furo. A análise é executada no fundo do furo ou no local na superfície. A análise de luz visível, perto do infravermelho e no meio do infraverme-lho é também executada na amostra para prover uma análise no local na superfície ou no fundo do furo das propriedades da amostra e nível de contaminação. A análise no local e no fundo do furo compreende a determinação de aromáticos, olefinas, saturados, razão de óleo gás, gravidade API e vários outros parâmetros que podem ser estimados pela correlação, uma rede neural treinada ou uma equação quimiométrica.
BRPI0410121-9A 2003-05-06 2004-05-05 método e aparelho para um espectrÈmetro a laser de diodo sintonizável para análise de amostras de hidrocarboneto BRPI0410121A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46837203P 2003-05-06 2003-05-06
PCT/US2004/013887 WO2004102169A1 (en) 2003-05-06 2004-05-05 Method and apparatus using a tunable diode laser spectrometer for analysis of hydrocarbon samples

Publications (1)

Publication Number Publication Date
BRPI0410121A true BRPI0410121A (pt) 2006-05-09

Family

ID=33452205

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0410121-9A BRPI0410121A (pt) 2003-05-06 2004-05-05 método e aparelho para um espectrÈmetro a laser de diodo sintonizável para análise de amostras de hidrocarboneto

Country Status (7)

Country Link
US (1) US7196786B2 (pt)
EP (1) EP1623209B1 (pt)
JP (1) JP2007502432A (pt)
BR (1) BRPI0410121A (pt)
CA (1) CA2524288A1 (pt)
NO (1) NO338165B1 (pt)
WO (1) WO2004102169A1 (pt)

Families Citing this family (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1620631B1 (en) * 2003-05-02 2007-07-11 Baker Hughes Incorporated Continuous data recorder for a downhole sample tank
US20070081157A1 (en) * 2003-05-06 2007-04-12 Baker Hughes Incorporated Apparatus and method for estimating filtrate contamination in a formation fluid
US7782460B2 (en) * 2003-05-06 2010-08-24 Baker Hughes Incorporated Laser diode array downhole spectrometer
GB2410800B (en) 2004-02-06 2007-12-12 Statoil Asa Fingerprinting of hydrocarbon containing mixtures
AU2012216360B2 (en) * 2005-03-14 2014-12-18 Gas Sensing Technology Corp. Apparatus and method of combining zonal isolation and in situ spectroscopic analysis of reservoir fluids for coal seams
AU2015200139B2 (en) * 2005-03-14 2016-07-21 Gas Sensing Technology Corp. Apparatus and method of combining zonal isolation and in situ spectroscopic analysis of reservoir fluids for coal seams
EA015095B1 (ru) * 2005-05-24 2011-06-30 Бейкер Хьюз Инкорпорейтед Способ и устройство определения характеристик коллектора с использованием фотоакустической спектроскопии
DE102005028268B4 (de) * 2005-06-14 2013-12-12 Forschungsverbund Berlin E.V. Verfahren und Vorrichtung zur Erzeugung und Detektion eines Raman-Spektrums
US7279678B2 (en) * 2005-08-15 2007-10-09 Schlumber Technology Corporation Method and apparatus for composition analysis in a logging environment
US7458257B2 (en) * 2005-12-19 2008-12-02 Schlumberger Technology Corporation Downhole measurement of formation characteristics while drilling
US7336356B2 (en) * 2006-01-26 2008-02-26 Schlumberger Technology Corporation Method and apparatus for downhole spectral analysis of fluids
US7379180B2 (en) * 2006-01-26 2008-05-27 Schlumberger Technology Corporation Method and apparatus for downhole spectral analysis of fluids
US7773217B2 (en) 2006-02-17 2010-08-10 Axsun Technologies, Inc. Probe for tunable laser Raman spectroscopy system
WO2007112437A2 (en) * 2006-03-28 2007-10-04 Axsun Technologies, Inc. Low pixel count tunable laser raman spectroscopy system and method
US7781737B2 (en) * 2006-12-20 2010-08-24 Schlumberger Technology Corporation Apparatus and methods for oil-water-gas analysis using terahertz radiation
US7593101B2 (en) * 2007-04-10 2009-09-22 Schlumberger Technology Corporation High-pressure cross-polar microscopy cells having adjustable fluid passage and methods of use
US7638761B2 (en) * 2007-08-13 2009-12-29 Baker Hughes Incorporated High temperature downhole tool
DE602007011061D1 (de) * 2007-08-23 2011-01-20 Schlumberger Technology Bv Vorrichtung und Verfahren zur Analyse leichter chemischer Verbindungen
US7601950B2 (en) 2007-09-25 2009-10-13 Baker Hughes Incorporated System and method for downhole optical analysis
US7817285B2 (en) * 2007-10-11 2010-10-19 Baker Hughes Incorporated Downhole uses of pressure-tuned semiconductor light sources
CN101539017A (zh) * 2008-03-17 2009-09-23 普拉德研究及开发股份有限公司 利用太赫兹辐射的油-水-气分析设备和方法
US7902545B2 (en) * 2008-05-14 2011-03-08 Baker Hughes Incorporated Semiconductor for use in harsh environments
US7907277B2 (en) * 2008-05-14 2011-03-15 Baker Hughes Incorporated Method and apparatus for downhole spectroscopy
US8032311B2 (en) 2008-05-22 2011-10-04 Baker Hughes Incorporated Estimating gas-oil ratio from other physical properties
US7954518B2 (en) * 2008-07-23 2011-06-07 Roy Torrance Tear cord for jacketed tube
US9669492B2 (en) 2008-08-20 2017-06-06 Foro Energy, Inc. High power laser offshore decommissioning tool, system and methods of use
US10301912B2 (en) * 2008-08-20 2019-05-28 Foro Energy, Inc. High power laser flow assurance systems, tools and methods
US9027668B2 (en) 2008-08-20 2015-05-12 Foro Energy, Inc. Control system for high power laser drilling workover and completion unit
RU2522016C2 (ru) * 2008-08-20 2014-07-10 Форо Энерджи Инк. Способ и система для проходки ствола скважины с использованием лазера большой мощности
US9562395B2 (en) 2008-08-20 2017-02-07 Foro Energy, Inc. High power laser-mechanical drilling bit and methods of use
US9267330B2 (en) 2008-08-20 2016-02-23 Foro Energy, Inc. Long distance high power optical laser fiber break detection and continuity monitoring systems and methods
US10053967B2 (en) 2008-08-20 2018-08-21 Foro Energy, Inc. High power laser hydraulic fracturing, stimulation, tools systems and methods
US9347271B2 (en) 2008-10-17 2016-05-24 Foro Energy, Inc. Optical fiber cable for transmission of high power laser energy over great distances
US9664012B2 (en) 2008-08-20 2017-05-30 Foro Energy, Inc. High power laser decomissioning of multistring and damaged wells
US8627901B1 (en) 2009-10-01 2014-01-14 Foro Energy, Inc. Laser bottom hole assembly
US9244235B2 (en) 2008-10-17 2016-01-26 Foro Energy, Inc. Systems and assemblies for transferring high power laser energy through a rotating junction
US8571368B2 (en) 2010-07-21 2013-10-29 Foro Energy, Inc. Optical fiber configurations for transmission of laser energy over great distances
US9138786B2 (en) 2008-10-17 2015-09-22 Foro Energy, Inc. High power laser pipeline tool and methods of use
US9242309B2 (en) 2012-03-01 2016-01-26 Foro Energy Inc. Total internal reflection laser tools and methods
US9360631B2 (en) 2008-08-20 2016-06-07 Foro Energy, Inc. Optics assembly for high power laser tools
US9089928B2 (en) 2008-08-20 2015-07-28 Foro Energy, Inc. Laser systems and methods for the removal of structures
US9719302B2 (en) 2008-08-20 2017-08-01 Foro Energy, Inc. High power laser perforating and laser fracturing tools and methods of use
US9080425B2 (en) 2008-10-17 2015-07-14 Foro Energy, Inc. High power laser photo-conversion assemblies, apparatuses and methods of use
US8082780B2 (en) * 2008-08-28 2011-12-27 Schlumberger Technology Corporation Methods and apparatus for decreasing a density of a downhole fluid
US8269161B2 (en) * 2008-12-12 2012-09-18 Baker Hughes Incorporated Apparatus and method for evaluating downhole fluids
US9845652B2 (en) 2011-02-24 2017-12-19 Foro Energy, Inc. Reduced mechanical energy well control systems and methods of use
RU2411468C1 (ru) * 2009-09-21 2011-02-10 Закрытое акционерное общество "Научно-технический центр "Реагент" Способ оценки количественной характеристики зондируемой поверхности земли
US9091151B2 (en) 2009-11-19 2015-07-28 Halliburton Energy Services, Inc. Downhole optical radiometry tool
AU2009356978B2 (en) 2009-12-23 2013-08-01 Halliburton Energy Services, Inc. Interferometry-based downhole analysis tool
US8632625B2 (en) 2010-06-17 2014-01-21 Pason Systems Corporation Method and apparatus for liberating gases from drilling fluid
CA2808214C (en) 2010-08-17 2016-02-23 Foro Energy Inc. Systems and conveyance structures for high power long distance laser transmission
US20120145907A1 (en) * 2010-12-14 2012-06-14 Van Groos August F Koster Dynamic environmental chamber and methods of radiation analysis
CA2823716C (en) 2011-01-04 2018-02-13 Exxonmobil Upstream Research Company Method and apparatus for a mid-infrared (mir) system for real time detection of petroleum in colloidal suspensions of sediments and drilling muds during drilling, logging, and production operations
US9068438B2 (en) * 2011-01-28 2015-06-30 Baker Hughes Incorporated Optimization of sample cleanup during formation testing
WO2012116155A1 (en) 2011-02-24 2012-08-30 Foro Energy, Inc. Electric motor for laser-mechanical drilling
WO2012138843A1 (en) * 2011-04-07 2012-10-11 Gas Sensing Technology Corp. Evaluating hydrologic reservoir constraint in coal seams and shale formations
WO2012167102A1 (en) 2011-06-03 2012-12-06 Foro Energy Inc. Rugged passively cooled high power laser fiber optic connectors and methods of use
US9399269B2 (en) 2012-08-02 2016-07-26 Foro Energy, Inc. Systems, tools and methods for high power laser surface decommissioning and downhole welding
US8686364B1 (en) * 2012-09-17 2014-04-01 Jp3 Measurement, Llc Method and system for determining energy content and detecting contaminants in a fluid stream
GB2507959A (en) * 2012-11-09 2014-05-21 M Squared Lasers Ltd Characterising hydrocarbon fluids using mid infrared absorption
US9249656B2 (en) * 2012-11-15 2016-02-02 Baker Hughes Incorporated High precision locked laser operating at elevated temperatures
MX361245B (es) 2013-03-05 2018-11-30 Halliburton Energy Services Inc Sistema, metodo y producto de programa informatico para fortalecimiento con respecto al entorno y diseño de sistema fotometrico.
US9085050B1 (en) 2013-03-15 2015-07-21 Foro Energy, Inc. High power laser fluid jets and beam paths using deuterium oxide
US9109434B2 (en) * 2013-06-09 2015-08-18 Schlumberger Technology Corporation System and method for estimating oil formation volume factor downhole
JP2015052551A (ja) * 2013-09-09 2015-03-19 株式会社かんでんエンジニアリング 油中成分測定方法、及び油入電気機器
US9441480B2 (en) * 2013-10-03 2016-09-13 Baker Hughes Incorporated Wavelength-selective, high temperature, near infrared photodetectors for downhole applications
US10794890B2 (en) * 2013-12-19 2020-10-06 Schlumberger Technology Corporation Method of obtaining asphaltene content of crude oils
WO2015152943A1 (en) * 2014-04-04 2015-10-08 Halliburton Energy Services, Inc. Isotopic analysis from a controlled extractor in communication to a fluid system on a drilling rig
WO2015164713A1 (en) * 2014-04-25 2015-10-29 Schlumberger Canada Limited Method and system for determining asphaltene onset pressure using a wavelength dependent signal
US9568459B2 (en) 2014-04-25 2017-02-14 Schlumberger Technology Corporation Method and system for determining asphaltene onset pressure using a using depressurization and pressurization
JP6209133B2 (ja) * 2014-05-26 2017-10-04 日本電信電話株式会社 同位体比分析システム、及び分析方法
US10221687B2 (en) 2015-11-26 2019-03-05 Merger Mines Corporation Method of mining using a laser
US10088422B2 (en) 2015-12-28 2018-10-02 Schlumberger Technology Corporation Raman spectroscopy for determination of composition of natural gas
US10100614B2 (en) 2016-04-22 2018-10-16 Baker Hughes, A Ge Company, Llc Automatic triggering and conducting of sweeps
DE102016111747B4 (de) 2016-06-27 2020-10-01 Forschungsverbund Berlin E.V. Verfahren und Vorrichtung zur Raman-Spektroskopie
WO2018038734A1 (en) 2016-08-26 2018-03-01 Halliburton Energy Services, Inc. Optical fiber spectroscopy using single photon detectors (spds)
US10739255B1 (en) * 2017-03-31 2020-08-11 Advanced Micro Instruments, Inc. Trace moisture analyzer instrument, gas sampling and analyzing system, and method of detecting trace moisture levels in a gas
US10656012B2 (en) 2017-12-22 2020-05-19 Massachusetts Institute Of Technology Swept-source Raman spectroscopy systems and methods
US12535003B2 (en) * 2018-12-31 2026-01-27 Baker Hughes Oilfield Operations Llc Systems and methods for obtaining downhole fluid properties
US11066930B2 (en) 2018-12-31 2021-07-20 Baker Hughes Oilfield Operations Llc Systems and method for analyzing downhole fluid properties using co-located multi-modal sensors
WO2021011470A1 (en) 2019-07-12 2021-01-21 Massachusetts Institute Of Technology Systems and methods for stochastically modulated raman spectroscopy
US11649721B2 (en) 2020-06-23 2023-05-16 Saudi Arabian Oil Company Hydrocarbon evaluation systems
CN114112966B (zh) * 2020-09-01 2024-08-27 中国石油化工股份有限公司 气体传感器测试装置、方法、机器可读存储介质及处理器
US12578492B2 (en) 2022-08-24 2026-03-17 Saudi Arabian Oil Company Evaluation of density and seismic impedance values of geologic layers using drill bit sound during drilling

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2813980A (en) * 1953-11-13 1957-11-19 Continental Oil Co Detection of water influx by radioactivity
CH585402A5 (pt) * 1974-11-20 1977-02-28 Balzers Patent Beteilig Ag
JPS60205336A (ja) * 1984-03-30 1985-10-16 Res Dev Corp Of Japan スペクトル分析装置における混在物質の干渉スペクトル除去処理方式
US4937448A (en) * 1988-05-26 1990-06-26 Spectra-Physics, Inc. Self-normalizing single-beam laser spectrometer
JPH0552654A (ja) * 1991-08-23 1993-03-02 Fuji Xerox Co Ltd 励起波長掃引式ラマン分光装置
US5317156A (en) * 1992-01-29 1994-05-31 Sri International Diagnostic tests using near-infrared laser absorption spectroscopy
JP2792782B2 (ja) * 1992-03-11 1998-09-03 東京電力株式会社 ガス濃度測定方法およびその測定装置
US5818578A (en) * 1995-10-10 1998-10-06 American Air Liquide Inc. Polygonal planar multipass cell, system and apparatus including same, and method of use
US5748308A (en) * 1996-02-02 1998-05-05 Abbott Laboratories Programmable standard for use in an apparatus and process for the noninvasive measurement of optically absorbing compounds
JPH09288058A (ja) * 1996-04-22 1997-11-04 Hitachi Cable Ltd 油中ガス検出装置
US5781284A (en) * 1996-04-24 1998-07-14 Infante; David A. System for detecting impurities contained in a fluid medium
DE19780447C1 (de) * 1996-05-14 2001-06-28 Ufz Leipzighalle Gmbh Verfahren zur Unterscheidung von Grund- und Standwasser in Grundwassermessstellen zwecks Bestimmung optimaler Abpumpzeiten bei der Probennahme und zur Realisierung einer Bohrlochsonde oder einer Durchflussmesszelle
JPH10111243A (ja) * 1996-10-08 1998-04-28 Kubota Corp 分光分析装置
DE19717145C2 (de) * 1997-04-23 1999-06-02 Siemens Ag Verfahren zur selektiven Detektion von Gasen und Gassensor zu dessen Durchführung
US6064488A (en) * 1997-06-06 2000-05-16 Monitor Labs, Inc. Method and apparatus for in situ gas concentration measurement
US6218662B1 (en) * 1998-04-23 2001-04-17 Western Atlas International, Inc. Downhole carbon dioxide gas analyzer
US6023340A (en) * 1998-05-07 2000-02-08 Schlumberger Technology Corporation Single point optical probe for measuring three-phase characteristics of fluid flow in a hydrocarbon well
JP3479227B2 (ja) * 1998-12-07 2003-12-15 国際航業株式会社 地中汚染物質の測定方法及び装置
GB2359631B (en) * 2000-02-26 2002-03-06 Schlumberger Holdings Hydrogen sulphide detection method and apparatus
PL365462A1 (en) * 2000-04-11 2005-01-10 Welldog, Inc. In-situ detection and analysis of methane in coal bed methane formations with spectrometers
US6437326B1 (en) * 2000-06-27 2002-08-20 Schlumberger Technology Corporation Permanent optical sensor downhole fluid analysis systems
US6474152B1 (en) * 2000-11-02 2002-11-05 Schlumberger Technology Corporation Methods and apparatus for optically measuring fluid compressibility downhole
US20030049858A1 (en) * 2001-07-15 2003-03-13 Golden Josh H. Method and system for analyte determination in metal plating baths
GB2377952B (en) * 2001-07-27 2004-01-28 Schlumberger Holdings Receptacle for sampling downhole
US6888127B2 (en) * 2002-02-26 2005-05-03 Halliburton Energy Services, Inc. Method and apparatus for performing rapid isotopic analysis via laser spectroscopy
US6847034B2 (en) * 2002-09-09 2005-01-25 Halliburton Energy Services, Inc. Downhole sensing with fiber in exterior annulus
US6978832B2 (en) * 2002-09-09 2005-12-27 Halliburton Energy Services, Inc. Downhole sensing with fiber in the formation
EP2320026B1 (en) * 2003-05-02 2013-04-24 Baker Hughes Incorporated A method and apparatus for a downhole micro-sampler

Also Published As

Publication number Publication date
CA2524288A1 (en) 2004-11-25
NO20055501L (no) 2005-11-22
US7196786B2 (en) 2007-03-27
EP1623209A1 (en) 2006-02-08
JP2007502432A (ja) 2007-02-08
US20050007583A1 (en) 2005-01-13
WO2004102169A1 (en) 2004-11-25
EP1623209B1 (en) 2019-08-28
NO20055501D0 (no) 2005-11-22
NO338165B1 (no) 2016-08-01

Similar Documents

Publication Publication Date Title
BRPI0410121A (pt) método e aparelho para um espectrÈmetro a laser de diodo sintonizável para análise de amostras de hidrocarboneto
US7214933B2 (en) Method and apparatus for a downhole fluorescence spectrometer
US9334727B2 (en) Downhole formation fluid contamination assessment
AU2001284361B2 (en) Methods and apparatus for downhole fluids analysis
CN102822447B (zh) 探测井下环境中二氧化碳和硫化氢的方法和井下工具装置
US7095012B2 (en) Methods and apparatus for determining chemical composition of reservoir fluids
RU2361192C2 (ru) Способ и устройство для определения показателя преломления флюида в скважине
US6707556B2 (en) Apparatus and method for analyzing fluids
US7084392B2 (en) Method and apparatus for a downhole fluorescence spectrometer
AU2002255442B2 (en) Methods and apparatus for determining chemical composition of reservoir fluids
CA2669434A1 (en) Downhole measurment of substances in earth formations
CA2618462A1 (en) Methods and apparatus to characterize stock-tank oil during fluid composition analysis
BRPI0409842A (pt) registrador de dados contìnuo para um tanque de amostras de fundo de poço
Zuo et al. Equation-of-state-based downhole fluid characterization
Mullins et al. Real-time quantification of OBM filtrate contamination during openhole wireline sampling by optical spectroscopy
CN1761868B (zh) 利用近红外光谱术井下量化甲烷的方法
US7750302B2 (en) Method and apparatus for detecting naphthenic acids
US20250085260A1 (en) Tunable laser spectroscopy measurement of c13 ethane
NO335561B1 (no) Fluorescens-spektrometer og fremgangsmåte for å måle fluorescensspektre i et fluid i et brønnhull

Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL