公开(公告)号：US10330665B2

公开(公告)日：2019-06-25

申请号：US14933807

申请日：2015-11-05

Applicant: Schlumberger Technology Corporation

Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Richard Jackson ,  Ankit Agarwal

IPC: E21B49/08 ,  G01N33/28

Abstract: Upper and lower asphaltene weight fractions of fluid proximate ends of an oil column are obtained based on measured OD. Upper and lower maltene partial densities are obtained based on the asphaltene weight fractions. A maltene partial density distribution is obtained utilizing the maltene partial densities and a predetermined diffusion model. An asphaltene partial density distribution is obtained based on the maltene partial density distribution and an estimated mass density gradient. An asphaltene weight percentage is obtained based on the asphaltene partial density distribution and the mass density gradient. The asphaltene weight percentage distribution is converted to an OD distribution utilizing a predetermined correlation. An optimization then reduces differences between the OD distribution and the measured OD data to within a predetermined range to refine a biodegradation time of the predetermined diffusion model. A viscosity distribution may be obtained based on the optimized OD distribution.

公开(公告)号：US09784101B2

公开(公告)日：2017-10-10

申请号：US14248528

申请日：2014-04-09

Applicant: Schlumberger Technology Corporation

Inventor： Richard Jackson ,  Ankit Agarwal ,  Adriaan Gisolf ,  Ilaria De Santo ,  Youxiang Zuo

IPC: E21B49/08 ,  E21B49/10

CPC classification number: E21B49/08 ,  E21B49/10

Abstract: A method for using an optical spectrum of mud filtrate for analysis of fluid drawn from a formation is provided. The method includes performing downhole fluid analysis of formation fluid drawn at a wellbore measurement station and determining an optical spectrum of mud filtrate in the formation fluid drawn at the wellbore measurement station. The method also includes performing downhole fluid analysis of formation fluid drawn at an additional wellbore measurement station, and performing the downhole fluid analysis of formation fluid drawn at the additional wellbore measurement station includes using the determined optical spectrum of the mud filtrate in the formation fluid previously drawn at the wellbore measurement station. Additional methods, systems, and devices are also disclosed.

公开(公告)号：US20160123953A1

公开(公告)日：2016-05-05

申请号：US14933807

申请日：2015-11-05

Applicant: Schlumberger Technology Corporation

Inventor： Youxiang Zuo ,  Oliver C. Mullins ,  Richard Jackson ,  Ankit Agarwal

IPC: G01N33/28 ,  E21B49/08

CPC classification number: G01N33/2888 ,  E21B49/08

Abstract: Upper and lower asphaltene weight fractions of fluid proximate ends of an oil column are obtained based on measured OD. Upper and lower maltene partial densities are obtained based on the asphaltene weight fractions. A maltene partial density distribution is obtained utilizing the maltene partial densities and a predetermined diffusion model. An asphaltene partial density distribution is obtained based on the maltene partial density distribution and an estimated mass density gradient. An asphaltene weight percentage is obtained based on the asphaltene partial density distribution and the mass density gradient. The asphaltene weight percentage distribution is converted to an OD distribution utilizing a predetermined correlation. An optimization then reduces differences between the OD distribution and the measured OD data to within a predetermined range to refine a biodegradation time of the predetermined diffusion model. A viscosity distribution may be obtained based on the optimized OD distribution.

Abstract translation: 基于测量的OD获得油柱近端流体的上部和下部沥青质重量分数。 基于沥青质重量分数获得上，下麦芽烯部分密度。 利用麦芽烯部分密度和预定扩散模型获得麦芽烯部分密度分布。 基于麦芽烯部分密度分布和估计质量密度梯度获得沥青质部分密度分布。 基于沥青质部分密度分布和质量密度梯度得到沥青质重量百分比。 使用预定的相关性将沥青质重量百分比分布转换为OD分布。 优化然后将OD分布和测量的OD数据之间的差异减小到预定范围内，以细化预定扩散模型的生物降解时间。 可以基于优化的OD分布获得粘度分布。

公开(公告)号：US20150292324A1

公开(公告)日：2015-10-15

申请号：US14248528

申请日：2014-04-09

Applicant: Schlumberger Technology Corporation

Inventor： Richard Jackson ,  Ankit Agarwal ,  Adriaan Gisolf ,  Ilaria De Santo ,  Youxiang Zuo

IPC: E21B49/08

CPC classification number: E21B49/08 ,  E21B49/10

Abstract: A method for using an optical spectrum of mud filtrate for analysis of fluid drawn from a formation is provided. The method includes performing downhole fluid analysis of formation fluid drawn at a wellbore measurement station and determining an optical spectrum of mud filtrate in the formation fluid drawn at the wellbore measurement station. The method also includes performing downhole fluid analysis of formation fluid drawn at an additional wellbore measurement station, and performing the downhole fluid analysis of formation fluid drawn at the additional wellbore measurement station includes using the determined optical spectrum of the mud filtrate in the formation fluid previously drawn at the wellbore measurement station. Additional methods, systems, and devices are also disclosed.

Abstract translation: 提供了一种使用泥浆滤液光谱分析从地层抽取的流体的方法。 该方法包括对在井眼测量站处绘制的地层流体进行井下流体分析，并确定在井筒测量站处抽取的地层流体中泥浆滤液的光谱。 该方法还包括对在另外的井眼测量站处绘制的地层流体进行井下流体分析，以及对在附加井眼测量站处绘制的地层流体进行井下流体分析包括使用先前在地层流体中确定的泥浆滤液的光谱 在井眼测量站绘制。 还公开了附加的方法，系统和装置。