公开(公告)号：US20170241922A1

公开(公告)日：2017-08-24

申请号：US15590963

申请日：2017-05-09

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： LALITHA VENKATARAMANAN ,  TAREK M. HABASHY ,  DENISE E. FREED

IPC: G01N24/08 ,  G01R33/44 ,  G01V3/32

CPC classification number: G01N24/081 ,  G01N11/16 ,  G01R33/448 ,  G01V3/14 ,  G01V3/32

Abstract: Methods and related systems are described for estimating fluid or rock properties from NMR measurements. A modified pulse sequence is provided that can directly provide moments of relaxation-time or diffusion distributions. This pulse sequence can be adapted to the desired moment of relaxation-time or diffusion coefficient. The data from this pulse sequence provides direct estimates of fluid properties such as average chain length and viscosity of a hydrocarbon. In comparison to the uniformly-spaced pulse sequence, these pulse sequences are faster and have a lower error bar in computing the fluid properties.

公开(公告)号：US20140074405A1

公开(公告)日：2014-03-13

申请号：US14083375

申请日：2013-11-18

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： LALITHA VENKATARAMANAN ,  TAREK M. HABASHY ,  DENISE E. FREED ,  ASHOK BELANI

IPC: G01V3/14

CPC classification number: G01N24/081 ,  G01N11/16 ,  G01R33/448 ,  G01V3/14 ,  G01V3/32

Abstract: Methods and related systems are described for estimating fluid or rock properties from NMR measurements. A modified pulse sequence is provided that can directly provide moments of relaxation-time or diffusion distributions. This pulse sequence can be adapted to the desired moment of relaxation-time or diffusion coefficient. The data from this pulse sequence provides direct estimates of fluid properties such as average chain length and viscosity of a hydrocarbon. In comparison to the uniformly-spaced pulse sequence, these pulse sequences are faster and have a lower error bar in computing the fluid properties.

Abstract translation: 描述了用于从NMR测量估计流体或岩石性质的方法和相关系统。 提供了可以直接提供弛豫时间或扩散分布的时刻的修改的脉冲序列。 该脉冲序列可以适应于所需的弛豫时间或扩散系数。 来自该脉冲序列的数据提供流体性质的直接估计，例如烃的平均链长和粘度。 与均匀间隔的脉冲序列相比，这些脉冲序列更快，在计算流体特性时具有较低的误差。

公开(公告)号：US20150168587A1

公开(公告)日：2015-06-18

申请号：US14109497

申请日：2013-12-17

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： DENISE E. FREED ,  LALITHA VENKATARAMANAN

IPC: G01V3/32 ,  E21B49/08

CPC classification number: G01V3/32 ,  E21B49/088 ,  G01N24/081 ,  G01V11/00

Abstract: Methods and apparatuses are provided for analyzing a composition of a hydrocarbon-containing fluid. The methods include using a nuclear magnetic resonance (NMR) tool to conduct NMR measurements on the hydrocarbon-containing fluid to obtain NMR data. A non-NMR tool, such as an optical tool, is used to conduct additional measurements and to obtain non-NMR data on the fluid. The methods further include determining an indication of the composition of the fluid by using the NMR data and normalizing the indication of the composition of the fluid using the non-NMR data.

Abstract translation: 提供了用于分析含烃流体的组成的方法和装置。 所述方法包括使用核磁共振（NMR）工具对含烃流体进行NMR测量以获得NMR数据。 使用诸如光学工具的非NMR工具进行附加测量并获得关于流体的非NMR数据。 所述方法还包括通过使用NMR数据来确定流体组成的指示，并使用非NMR数据对流体的组成的指示进行归一化。

公开(公告)号：US20150168585A1

公开(公告)日：2015-06-18

申请号：US14109354

申请日：2013-12-17

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： NICHOLAS N. BENNETT ,  YI ZENG ,  LALITHA VENKATARAMANAN ,  DENISE E. FREED ,  MARTIN D. HÜRLIMANN

IPC: G01V3/32 ,  E21B49/08

CPC classification number: G01V3/32 ,  E21B49/082

Abstract: Apparatus and methods of analyzing a composition of a hydrocarbon-containing fluid including using a nuclear magnetic resonance (NMR) tool to conduct a NMR relaxation measurement, a diffusion measurement, or both on the hydrocarbon-containing fluid to obtain NMR data, using a non-NMR tool to conduct an additional measurement of a reference fluid to obtain non-NMR data wherein the additional measurement comprises gas chromatography, optical observation, or both, and using the NMR data and the non-NMR data in an inversion process to determine an indication of the composition of the hydrocarbon-containing fluid. In some embodiments, the indication is determined over 4 chain length nodes.

Abstract translation: 包括使用核磁共振（NMR）工具对含烃流体的组成进行分析以对含烃流体进行NMR弛豫测量，扩散测量或两者的装置和方法，以获得NMR数据，使用非 - -NMR工具，以进行参考流体的额外测量以获得非NMR数据，其中附加测量包括气相色谱，光学观察或两者，并且在反演过程中使用NMR数据和非NMR数据来确定 指示含烃流体的组成。 在一些实施例中，通过4个链长节点确定指示。