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    • 4. 发明专利
      FR2855267A1 Treating optical density data for fluid sample comprises obtaining data in both chromatic and component channels and eliminating chromatic absorption from optical density measurements 未知
    • Treating optical density data for fluid sample comprises obtaining data in both chromatic and component channels and eliminating chromatic absorption from optical density measurements
    • FR2855267A1
    • 2004-11-26
    • FR0450990
    • 2004-05-18
    • SCHLUMBERGER SERVICES PETROL
    • DONG CHENGLI , HEGEMAN PETER , MULLINS OLIVER C , HSU KAI , KURKJIAN ANDREW L , CARNEGIE ANDREW J
    • G01N21/00 , E21B49/10 , G01N21/25 , G01N21/31 , G01N21/17 , G01N33/26 , E21B49/08
    • A chromatic absorption function for the fluid sample is determined from the optical density data in the chromatic channel. Part of the optical density in the fluid component channel(s) is determined from the chromatic absorptions. The data for the component channel(s) is corrected by eliminating the part of the optical density in the component channel(s) caused by chromatic absorption : The chromatic channel contains at least two chromatic channels and the chromatic absorption function contains two unknowns. To determine the chromatic absorption function, calculating the part of the optical density caused by chromatic absorptions and chromatic correction are done on optical density data received at a number of instants. The chromatic absorption function depends on the wavelength of the incident light. The fluid component channel includes a methane channel, an oil channel, or a channel containing both methane and oil, and the process also includes calculation of the gas-oil ratio and the percentage contamination of the fluid sample. Optical density data is also obtained for a fluid sample in a base channel and the part of the optical density caused by chromatic absorption in the base channel is calculated from the chromatic absorption function. The diffusion of the optical density data for the component channel(s) is corrected by eliminating the optical density of the base channel from the optical density of the component channel(s). The measurements are repeated for a water channel to allow calculation of a water-absorption ratio for the fluid component channel and the correction of optical density data in the fluid component channel by eliminating the optical density absorption due to water. These calculations are repeated at a number of instants and the water-absorption ratio is determined by experiment. The fluid component channel contains methane, oil, or both. An independent claim is for an electronic system for carrying out the above process, comprising an inlet device to receive optical density data for a fluid sample at a number of instants; a memory connected to the inlet device to record the data received, a processor coupled to the memory and designed to use the optical density data to develop a system of equations to model the optical density in each channel in the form of a sum of at least two elements of the following: chromatic absorptions, absorptions due to molecular vibrations, absorptions due to water and diffusion, and designed to resolve the system of equations to determine the absorptions due to the molecular vibrations in a channel of methane and a channel of oil. The electronic system is connected to or integral with a sampling device for a base fluid.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 7. 发明专利
      AU2004201659B2 Optical fluid analysis signal refinement 未知
    • Optical fluid analysis signal refinement
    • AU2004201659B2
    • 2005-09-15
    • AU2004201659
    • 2004-04-20
    • SCHLUMBERGER TECHNOLOGY BV
    • CARNEGIE ANDREW J , KURKJIAN ANDREW L , HSU KAI , MULLINS OLIVER C , HEGEMAN PETER S , DONG CHENGLI
    • G01N21/00 , E21B49/10 , G01N21/25 , G01N21/31 , G01N021/25 , E21B049/08
    • A chromatic absorption function for the fluid sample is determined from the optical density data in the chromatic channel. Part of the optical density in the fluid component channel(s) is determined from the chromatic absorptions. The data for the component channel(s) is corrected by eliminating the part of the optical density in the component channel(s) caused by chromatic absorption : The chromatic channel contains at least two chromatic channels and the chromatic absorption function contains two unknowns. To determine the chromatic absorption function, calculating the part of the optical density caused by chromatic absorptions and chromatic correction are done on optical density data received at a number of instants. The chromatic absorption function depends on the wavelength of the incident light. The fluid component channel includes a methane channel, an oil channel, or a channel containing both methane and oil, and the process also includes calculation of the gas-oil ratio and the percentage contamination of the fluid sample. Optical density data is also obtained for a fluid sample in a base channel and the part of the optical density caused by chromatic absorption in the base channel is calculated from the chromatic absorption function. The diffusion of the optical density data for the component channel(s) is corrected by eliminating the optical density of the base channel from the optical density of the component channel(s). The measurements are repeated for a water channel to allow calculation of a water-absorption ratio for the fluid component channel and the correction of optical density data in the fluid component channel by eliminating the optical density absorption due to water. These calculations are repeated at a number of instants and the water-absorption ratio is determined by experiment. The fluid component channel contains methane, oil, or both. An independent claim is for an electronic system for carrying out the above process, comprising an inlet device to receive optical density data for a fluid sample at a number of instants; a memory connected to the inlet device to record the data received, a processor coupled to the memory and designed to use the optical density data to develop a system of equations to model the optical density in each channel in the form of a sum of at least two elements of the following: chromatic absorptions, absorptions due to molecular vibrations, absorptions due to water and diffusion, and designed to resolve the system of equations to determine the absorptions due to the molecular vibrations in a channel of methane and a channel of oil. The electronic system is connected to or integral with a sampling device for a base fluid.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 8. 发明专利
      NO20141097L Forfinelse av signal ved optisk fluid-analyse 未知
    • Forfinelse av signal ved optisk fluid-analyse
    • NO20141097L
    • 2004-11-23
    • NO20141097
    • 2014-09-11
    • SCHLUMBERGER TECHNOLOGY BV
    • HSU KAI , MULLINS OLIVER CLINTON , DONG CHENGLI , CARNEGIE ANDREW J , KURKJIAN ANDREW L , HEGEMAN PETER S
    • G01N21/00 , E21B49/10 , G01N21/25 , G01N21/31
    • Foreliggende oppfinnelse vedrører fremgangsmåter for å forbedre opptak av fluidprøvedata. En fremgangsmåte omfatter utledning av optiske densitetsdata for en fluidprøve i en vannkanal samt beregning av den andel av den optiske densitet som forårsakes av vannabsorpsjon av den minst ene komponentkanal basert på en optisk densitet i vannkanalen, samt et vannabsorpsjonsforhold for den minst ene komponentkanal. Disse fremgangsmåter omfatter deretter avvanning av den optiske densitet i hver av den minst ene fluidkomponentkanal ved å fjerne den andel av de optiske densitetsdata som forårsakes av vannabsorpsjoner. Oppfinnelsen vedrører også elektronisk utstyr som omfatter en inngangsinnretning anordnet for å motta optiske densitetsdata for en fluidprøve ved flere tidspunkter, samt et minne som i drift er koplet til inngangsinnretningen for å kunne lagre de mottatte data. Det elektroniske utstyr kan også omfatte en prosessor som i drift er koplet til minnet og innrettet for å bruke de optiske densitetsdata for å utvikle et ligningssystem som utgjør en modell for den optiske densitet i hver av de optiske kanaler som en sum av minst to av de grupper som består av fargeabsorpsjoner,molekylær-vibrasjonsabsorpsjoner, vannabsorpsjoner og spredning, og som er utført for å løse dette ligningssystem for å bestemme de molekylær-vibrasjonsabsorpsjoner i en metankanal og i en oljekanal.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 9. 发明专利
      NO981692L  未知
    • NO981692L
    • 1998-10-19
    • NO981692
    • 1998-04-15
    • SCHLUMBERGER TECHNOLOGY BV
    • HALFORD FRANK R , BENSON WALTER R , ECKERSLEY CLIVE P , KURKJIAN ANDREW L
    • E21B49/08 , E21B49/10
    • In this invention, drill pipe or tubing is attached to a sampling tool that is suspended in a borehole. A wireline cable also connects the tool to surface equipment and establishes electrical communication between the tool and the surface equipment. A valve located in the docking head assembly controls fluid flow between the borehole and the drill pipe through a port located within the drill pipe assembly which is opened and closed as required. During operations, the tool takes fluid samples from the formation and analyzes them for contamination levels. Unacceptable fluid is pumped or flowed through the tool via a flowline and into the drill pipe where it is stored until it is disposed of at the surface. Once the flowing fluid reaches acceptable levels of contamination, this fluid is pumped or flowed into a sample chamber(s) in the tool. Once sampling is completed the contaminated fluid is forced to the surface by opening the port and pumping a different fluid down the borehole annulus, through the port and into the tool below the contaminated fluid and thereby filling the drill pipe and forcing the contaminated fluid up the drill pipe and to the surface, instead of discarding the fluid into the borehole or storing the fluid in the tool. This invention allows for larger amounts of fluid to be retrieved from the formation which results in cleaner fluid samples and better information about the formation. Moreover the nature of the pressure data acquired both during periods of flow and shut-in can be used to deduce formation permeability and permeability anisotropy.
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
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