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公开(公告)号：US10316656B2
公开(公告)日：2019-06-11
申请号：US14697382
申请日：2015-04-27
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Kang Wang , Adriaan Gisolf , Ryan Sangjun Lee , Oliver C. Mullins , Shu Pan
Abstract: A method includes identifying linearly behaving data within obtained data associated with fluid obtained from a subterranean formation. Shrinkage factor is determined based on the linearly behaving data. A function relating GOR data of the obtained fluid with the determined shrinkage factor is determined. A first linear relationship between optical density (OD) data of the obtained fluid and the function is determined. A second linear relationship between density data of the obtained fluid and the function is determined. An oil-based mud (OBM) filtrate contamination property of OBM filtrate within the obtained fluid based on the first linear relationship is determined. A native formation property of native formation fluid within the obtained fluid based on the second linear relationship is determined. A volume fraction of OBM filtrate contamination within the obtained fluid based on the OBM filtrate contamination property and the native formation property is estimated.
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公开(公告)号：US10316655B2
公开(公告)日：2019-06-11
申请号：US14085589
申请日：2013-11-20
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Adriaan Gisolf , Ryan Lee , Cosan Ayan , Hadrien Dumont , Kang Wang , Chetankumar Desai , Oliver Mullins , Beatriz Barbosa
IPC: E21B49/08
Abstract: A method for performing contamination monitoring through estimation wherein measured data for optical density, gas to oil ratio, mass density and composition of fluid components are used to obtain plotting data and the plotting data is extrapolated to obtain contamination levels.
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公开(公告)号：US10228325B2
公开(公告)日：2019-03-12
申请号：US15027227
申请日：2014-10-03
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Hadrien Dumont , Richard Jackson , Ilaria De Santo , Oliver C. Mullins , Cosan Ayan
Abstract: The present disclosure relates to a downhole fluid analysis method that includes withdrawing formation fluid into a downhole tool at a plurality of stations within a wellbore, analyzing the formation fluid within a fluid analyzer of a downhole tool to determine properties of the formation fluid for the plurality of stations, and developing, based on the determined properties of the formation fluid, a relationship for predicting viscosity from a measured optical density.
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公开(公告)号：US10190396B2
公开(公告)日：2019-01-29
申请号：US14927305
申请日：2015-10-29
Applicant: Schlumberger Technology Corporation
Inventor： Yi Chen , Kang Wang , Oliver C. Mullins , Youxiang Zuo
Abstract: A downhole tool, surface equipment, and/or remote equipment are utilized to obtain data associated with a subterranean hydrocarbon reservoir, fluid contained therein, and/or fluid obtained therefrom. At least one condition indicating that a density inversion exists in the fluid contained in the reservoir is identified from the data. Molecular sizes of fluid components contained within the reservoir are estimated from the data. A model of the density inversion is generated based on the data and molecular sizes. The density inversion model is utilized to estimate the density inversion amount and depth and time elapsed since the density inversion began to form within the reservoir. A model of a gravity-induced current of the density inversion is generated based on the data and the density inversion amount, depth, and elapsed time.
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公开(公告)号：US20180223657A1
公开(公告)日：2018-08-09
申请号：US15428534
申请日：2017-02-09
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Shu Pan , Kang Wang , Oliver Mullins , Ashers Partouche
CPC classification number: E21B49/082 , E21B2049/085 , G01V99/005 , G01V2210/624 , G01V2210/663
Abstract: A method includes placing a downhole acquisition tool in a wellbore in a geological formation within a hydrocarbon reservoir. The wellbore or the geological formation, or both, contain a reservoir fluid. The method also includes performing downhole fluid analysis using the downhole acquisition tool in the wellbore to determine at least one measurement associated with the reservoir fluid and using a processor to: estimate at least one fluid component property by using an equation of state based at least in part on at least one measurement associated with the reservoir fluid and simulate a diffusion process using a diffusive model that takes into account the at least one estimated fluid property. The diffusive model accounts for gravitational diffusion of at least one or more components in the reservoir fluid. The method also includes using the processor to estimate one or more reservoir fluid geodynamic processes based at least in part on the at least one fluid property; compare the estimated one or more reservoir fluid geodynamic processes with the at least one measurement associated with the reservoir fluid; and output one or more reservoir fluid geodynamic processes corresponding to the at least one measurement associated with the reservoir fluid.
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Patent Agency Ranking
公开(公告)号：US10024755B2
公开(公告)日：2018-07-17
申请号：US14861925
申请日：2015-09-22
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Vinay K. Mishra , Hadrien Dumont , Adriaan Gisolf , Christopher Babin , Cosan Ayan , Beatriz E. Barbosa
Abstract: The present disclosure relates to systems and methods for determining an integrity of a sample chamber. In certain embodiments, formation fluid is collected from a subterranean formation within a sample chamber disposed in a downhole tool, the downhole tool is withdrawn from a wellbore, an estimated surface pressure of the collected formation fluid is determined, the estimated surface pressure of the collected formation fluid is compared with an actual surface pressure of the sample chamber, and the integrity of the sample chamber is determined based on the comparison of the estimated surface pressure and the actual surface pressure.
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公开(公告)号：US10012074B2
公开(公告)日：2018-07-03
申请号：US14371987
申请日：2013-01-11
Applicant: Schlumberger Technology Corporation
Inventor： Andrew E. Pomerantz , Zied Ben Hamad , Albert Ballard Andrews , Youxiang Zuo , Oliver Clinton Mullins
CPC classification number: E21B49/00 , E21B47/102 , E21B49/081 , E21B49/10
Abstract: A downhole tool is conveyed within a borehole extending into a subterranean formation. Fluid is drawn from the subterranean formation into the downhole tool, wherein the fluid comprises heavy oil. Fluorescence intensity of the drawn fluid is measured via a sensor of the downhole tool, and asphaltene content of the drawn fluid is estimated based on the measured fluorescence intensity.
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公开(公告)号：US20170175524A1
公开(公告)日：2017-06-22
申请号：US14975698
申请日：2015-12-18
Applicant: Schlumberger Technology Corporation
Inventor： Hadrien Dumont , Christopher Harrison , Youxiang Zuo , Christopher Albert Babin , Abhishek Agarwal , Adriaan Gisolf
CPC classification number: E21B49/10 , E21B49/081
Abstract: Systems and methods for obtaining in-situ measurements of mixed formation fluids are provided. A downhole acquisition tool may move to a first station in a wellbore in a geological formation to collect a sample of first formation fluid from the first station. The downhole acquisition tool may move to a second station in the wellbore and a sample of second formation fluid may be collected. A proportion of the first formation fluid and the second formation fluid may be mixed within the downhole acquisition tool in-situ while the downhole acquisition tool is within the wellbore to obtain a formation fluid mixture. The formation fluid mixture may be passed into a fluid testing component of the downhole acquisition tool while the downhole acquisition tool is in the wellbore to measure fluid properties of the formation fluid mixture in-situ.
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公开(公告)号：US20170138921A1
公开(公告)日：2017-05-18
申请号：US15419137
申请日：2017-01-30
Applicant: Schlumberger Technology Corporation
Inventor： Youxiang Zuo , Adriaan Gisolf , Li Chen
CPC classification number: G01N33/2841 , E21B41/005 , E21B49/10 , G01N33/2835
Abstract: Methods and apparatus for operating a downhole tool within a wellbore adjacent a subterranean formation to pump contaminated fluid from the formation into the downhole tool while measuring first and second fluid properties of the contaminated fluid. The contaminated fluid comprises native fluid from the formation and a contaminant. The downhole tool is in communication with surface equipment located at surface. The downhole tool and/or surface equipment is operated to estimate a formation volume factor of the contaminated fluid based on at least one of the first and second fluid properties of the contaminated fluid. A linear relationship is then estimated between the first fluid property and a function that relates the first fluid property to the second fluid property and the estimated formation volume factor of the contaminated fluid. A fluid property of the contaminant is then estimated based on the estimated linear relationship.
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公开(公告)号：US09581014B2
公开(公告)日：2017-02-28
申请号：US14164940
申请日：2014-01-27
Applicant: Schlumberger Technology Corporation
Inventor： Yi Chen , Youxiang Zuo , Oliver C. Mullins
CPC classification number: E21B47/06 , E21B49/088 , E21B49/10 , G01N33/2823
Abstract: A method for predicting asphaltene onset pressure in a reservoir is provided. In one embodiment, the method includes performing downhole fluid analysis of formation fluid via a downhole tool at a measurement station at a first depth in a wellbore and determining an asphaltene gradient for the formation fluid at the measurement station. Asphaltene onset pressure for a second depth in the wellbore may then be predicted based on the downhole fluid analysis and the determined asphaltene gradient. Additional methods, systems, and devices are also disclosed.
Abstract translation: 提供了一种预测储层中沥青质起始压力的方法。 在一个实施例中，该方法包括在井眼的第一深度的测量站处经由井下工具对地层流体进行井下流体分析，并且确定测量站处的地层流体的沥青质梯度。 然后可以基于井下流体分析和确定的沥青质梯度来预测井筒中第二深度的沥青质起始压力。 还公开了附加的方法，系统和装置。
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