公开(公告)号：US20140353037A1

公开(公告)日：2014-12-04

申请号：US14284668

申请日：2014-05-22

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： John Rasmus ,  George Bordakov

IPC: E21B44/00

CPC classification number: E21B47/04

Abstract: A method includes accepting as input to a processor measurements of a characteristic of a subsurface formation made at a plurality of spaced apart positions along a pipe string moved along a wellbore. Measurements are made of pipe string depth in the wellbore from the Earth's surface. The measurements of pipe string depth include measurements of apparent depth of each of the spaced apart locations. The subsurface formation is identified from the measurements of the characteristic. A true depth of the subsurface formation is made using the measurements of pipe string depth and apparent depth of the formation from each of the spaced apart positions. A record of measurements of the characteristic with respect to depth corrected for changes in length of the pipe string caused by axial forces along the pipe string is generated.

Abstract translation: 一种方法包括接受处理器沿沿着井眼移动的管柱的多个间隔位置处形成的地下地层的特性的输入的输入。 测量来自地球表面的井眼中的管柱深度。 管柱深度的测量包括每个间隔开的位置的表观深度的测量。 从特征的测量中识别地下地层。 使用从每个间隔开的位置的管柱深度和地层的表观深度的测量来进行地下地层的真实深度。 产生相对于沿着管柱的轴向力引起的管柱长度变化校正的特性的测量记录。

公开(公告)号：US10353107B2

公开(公告)日：2019-07-16

申请号：US14355498

申请日：2012-10-31

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION ,  SAUDI ARABIAN OIL COMPANY

Inventor： David F. Allen ,  George Bordakov ,  Steve F. Crary ,  Philip Savundararaj ,  Ramsin Eyvazzadeh ,  Edward Alan Clerke ,  Johannes J. Buiting ,  Paul Smith ,  Jim Funk

IPC: G01V3/32 ,  G01N24/08 ,  G01R33/44 ,  G01R33/46

Abstract: A petrophysically regularized time domain nuclear magnetic resonance (NMR) inversion includes using an NMR tool to acquire NMR data and inverting the acquired NMR data in a time domain using petrophysical constraints. The inverted NMR data is analyzed. The petrophysical constraints may be identified by: determining a number of porobodons to seek, defining a plurality of zones in which only a subset of porobodon sets is present, and stacking all NMR echoes in each zone satisfying discriminators. The number of porobodons to seek may be based on knowledge of core samples, logs, and NMR sensitivity. The discriminator logs may be logs sensitive to porosity partitioning. A computing system having a processor, a memory, and a program stored in memory may be configured to perform the method. The system may be conveyed downhole on a wireline, a while-drilling drill string, a coiled tubing, a slickline, or a wired drill pipe.

公开(公告)号：US09593571B2

公开(公告)日：2017-03-14

申请号：US14284668

申请日：2014-05-22

Applicant: Schlumberger Technology Corporation

Inventor： John Rasmus ,  George Bordakov

IPC: E21B47/04

CPC classification number: E21B47/04

Abstract: A method includes accepting as input to a processor measurements of a characteristic of a subsurface formation made at a plurality of spaced apart positions along a pipe string moved along a wellbore. Measurements are made of pipe string depth in the wellbore from the Earth's surface. The measurements of pipe string depth include measurements of apparent depth of each of the spaced apart locations. The subsurface formation is identified from the measurements of the characteristic. A true depth of the subsurface formation is made using the measurements of pipe string depth and apparent depth of the formation from each of the spaced apart positions. A record of measurements of the characteristic with respect to depth corrected for changes in length of the pipe string caused by axial forces along the pipe string is generated.

Abstract translation: 一种方法包括接受处理器沿沿着井眼移动的管柱的多个间隔位置处形成的地下地层的特性的输入的输入。 测量来自地球表面的井眼中的管柱深度。 管柱深度的测量包括每个间隔开的位置的表观深度的测量。 从特征的测量中识别地下地层。 使用从每个间隔开的位置的管柱深度和地层的表观深度的测量来进行地下地层的真实深度。 产生相对于沿着管柱的轴向力引起的管柱长度变化校正的特性的测量记录。

公开(公告)号：US20230323765A1

公开(公告)日：2023-10-12

申请号：US18042344

申请日：2021-08-20

Applicant: Schlumberger Technology Corporation

Inventor： George Bordakov

IPC: E21B45/00

CPC classification number: E21B45/00

Abstract: Processes and systems for synchronizing driller depth data as a function of time with downhole tool acceleration data as a function of time. In some embodiments, the process can include determining one or more in slips conditions for a drill pipe; determining one or more in slips conditions for a downhole tool; interpolating the in slips status indicators on to a common time grid; determining one or more shifts for which an allowed minimum overlapping time period between the acceleration data and the driller depth data is not less than an allowed minimum overlapping time period; determining a correlation coefficient between the interpolated in slips status indicators for each of the one or more shifts; determining a maximum correlation coefficient and a time shift associated with the maximum correlation; and synchronizing the acceleration data and the driller depth data.

公开(公告)号：US20140285190A1

公开(公告)日：2014-09-25

申请号：US14355498

申请日：2012-10-31

Applicant: SCHLUMBERGER CANADA LIMITED ,  SERVICES PETROLIERS SCHLUMBERGER ,  SCHLUMBERGER HOLDINGS LIMITED ,  SCHLUMBERGER TECHNOLOGY B.V. ,  PRAD RESEARCH AND DEVELOPMENT LIMITED ,  SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： David F. Allen ,  George Bordakov ,  Steve F. Crary ,  Philip Savundararaj ,  Ramsin Eyvazzadeh ,  Edward Alan Clerke ,  Johannes J. Buiting ,  Paul Smith ,  Jim Funk

IPC: G01V3/32 ,  G01R33/44

CPC classification number: G01V3/32 ,  G01N24/081 ,  G01R33/44 ,  G01R33/4625

Abstract: A petrophysically regularized time domain nuclear magnetic resonance (NMR) inversion includes using an NMR tool to acquire NMR data and inverting the acquired NMR data in a time domain using petrophysical constraints. The inverted NMR data is analyzed. The petrophysical constraints may be identified by: determining a number of porobodons to seek, defining a plurality of zones in which only a subset of porobodon sets is present, and stacking all NMR echoes in each zone satisfying discriminators. The number of porobodons to seek may be based on knowledge of core samples, logs, and NMR sensitivity. The discriminator logs may be logs sensitive to porosity partitioning. A computing system having a processor, a memory, and a program stored in memory may be configured to perform the method. The system may be conveyed downhole on a wireline, a while-drilling drill string, a coiled tubing, a slickline, or a wired drill pipe.

Abstract translation: 岩石物理正则化的时域核磁共振（NMR）反演包括使用NMR工具获得NMR数据并且使用岩石物理学约束在时域反转获取的NMR数据。 分析反相NMR数据。 岩石物理学约束可以通过以下方式来确定：确定多个孔体以寻找多个区域，其中仅存在孔体组的子集，并且在满足鉴别器的每个区域中堆叠所有NMR回波。 要寻求的孔洞数量可能是基于核心样本，原木和核磁共振敏感性的知识。 鉴别器日志可能是对孔隙度划分敏感的日志。 具有处理器，存储器和存储在存储器中的程序的计算系统可以被配置为执行该方法。 该系统可以在电缆，同时钻井钻柱，盘管，钢丝绳或有线钻杆的井下传送。