公开(公告)号：US20170139074A1

公开(公告)日：2017-05-18

申请号：US15346242

申请日：2016-11-08

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Christian Stoller ,  Matthieu Simon ,  David Alan Rose ,  Libo Yang ,  Onur Ozen ,  Sicco Beekman

IPC: G01V5/08 ,  E21B49/00

CPC classification number: G01V5/08 ,  E21B47/1015 ,  E21B49/00 ,  G01V5/04

Abstract: The present disclosure describes a downhole tool including an electrically operated radiation generator that selectively output radiation to a surrounding environment based at least in part on supply of electrical power; and a control system that determines likelihood of exposing living beings in the surrounding environment to output radiation by determining whether one or more check conditions is met; determine that each of the one or more check conditions is met before instructing the electrically operated radiation generator to output radiation; and instruct the electrically operated radiation generator to cease output of radiation when at least one of the one or more check conditions is no longer met.

公开(公告)号：US20160003025A1

公开(公告)日：2016-01-07

申请号：US14325255

申请日：2014-07-07

Applicant: Schlumberger Technology Corporation

Inventor： Sicco Beekman ,  Tong Zhou ,  David Alan Rose ,  Christian Stoller

IPC: E21B47/00

CPC classification number: G01V5/102 ,  E21B47/00 ,  E21B47/1015 ,  G01V5/045 ,  G01V5/101 ,  G01V5/104 ,  G01V5/125

Abstract: A method for evaluating wellbore conduit condition includes using measurements of at least one of (i) inelastic gamma rays made during emission a burst of neutrons into the conduit from within the conduit at at least one spaced apart location from a position of the emission and (ii) epithermal neutrons or capture gamma rays therefrom detected at at least two spaced apart locations from the position of the emission within a selected time after the emission. The at least one of the measurements of inelastic gamma rays and epithermal neutron or capture gamma ray counts are characterized to estimate an amount of loss of iron in the conduit.

公开(公告)号：US10365398B2

公开(公告)日：2019-07-30

申请号：US15145991

申请日：2016-05-04

Applicant: Schlumberger Technology Corporation

Inventor： Sicco Beekman ,  Tong Zhou ,  David Alan Rose ,  Christian Stoller

IPC: G01V5/04 ,  G01V5/10 ,  E21B47/00 ,  G01V5/12 ,  E21B47/10

Abstract: A method for evaluating wellbore conduit condition includes using measurements of at least one of (i) inelastic gamma rays made during emission a burst of neutrons into the conduit from within the conduit at at least one spaced apart location from a position of the emission and (ii) epithermal neutrons or capture gamma rays therefrom detected at at least two spaced apart locations from the position of the emission within a selected time after the emission. The at least one of the measurements of inelastic gamma rays and epithermal neutron or capture gamma ray counts are characterized to estimate an amount of loss of iron in the conduit.

公开(公告)号：US09335437B2

公开(公告)日：2016-05-10

申请号：US14325255

申请日：2014-07-07

Applicant: Schlumberger Technology Corporation

Inventor： Sicco Beekman ,  Tong Zhou ,  David Alan Rose ,  Christian Stoller

IPC: G01V5/10 ,  G01V5/12 ,  E21B47/00

CPC classification number: G01V5/102 ,  E21B47/00 ,  E21B47/1015 ,  G01V5/045 ,  G01V5/101 ,  G01V5/104 ,  G01V5/125

Abstract: A method for evaluating wellbore conduit condition includes using measurements of at least one of (i) inelastic gamma rays made during emission a burst of neutrons into the conduit from within the conduit at at least one spaced apart location from a position of the emission and (ii) epithermal neutrons or capture gamma rays therefrom detected at at least two spaced apart locations from the position of the emission within a selected time after the emission. The at least one of the measurements of inelastic gamma rays and epithermal neutron or capture gamma ray counts are characterized to estimate an amount of loss of iron in the conduit.

Abstract translation: 一种用于评估井眼导管状况的方法包括使用以下至少一种的测量：（i）在从发射位置的至少一个间隔开的位置处从导管内将中子爆发期间发射的中子期间产生的非弹性γ射线和（ ii）从发射之后的选定时间内在发射位置的至少两个间隔开的位置处检测到超热中子或捕获其γ射线。 非弹性γ射线和超热中子或捕获伽马射线计数的测量中的至少一个的特征在于估计导管中铁的损失量。

公开(公告)号：US10746895B2

公开(公告)日：2020-08-18

申请号：US16670002

申请日：2019-10-31

Applicant: Schlumberger Technology Corporation

Inventor： Tong Zhou ,  Christian Stoller ,  James Leslie Thornton ,  David Alan Rose

IPC: G01V5/10 ,  G01N33/24

Abstract: A method for determining a fractional volume of at least one component of a formation includes entering into a computer a number of detected radiation events resulting from imparting neutrons into the formation at an energy level of at least 1 million electron volts (MeV). The detected radiation events correspond to at least one of an energy level of the imparted neutrons and thermal or epithermal energy neutrons. A measurement of at least one additional petrophysical parameter of the formation is made. The at least one additional petrophysical parameter measurement and at least one of a fast neutron cross-section and a thermal neutron cross-section determined from the detected radiation events are used in the computer to determine the fractional volume of the at least one component of the formation. In another embodiment, the fast neutron cross-section and the thermal neutron cross-section may be used on combination to determine the fractional volume.

公开(公告)号：US20200081149A1

公开(公告)日：2020-03-12

申请号：US16670002

申请日：2019-10-31

Applicant: Schlumberger Technology Corporation

Inventor： Tong Zhou ,  Christian Stoller ,  James Leslie Thornton ,  David Alan Rose

IPC: G01V5/10

Abstract: A method for determining a fractional volume of at least one component of a formation includes entering into a computer a number of detected radiation events resulting from imparting neutrons into the formation at an energy level of at least 1 million electron volts (MeV). The detected radiation events correspond to at least one of an energy level of the imparted neutrons and thermal or epithermal energy neutrons. A measurement of at least one additional petrophysical parameter of the formation is made. The at least one additional petrophysical parameter measurement and at least one of a fast neutron cross-section and a thermal neutron cross-section determined from the detected radiation events are used in the computer to determine the fractional volume of the at least one component of the formation. In another embodiment, the fast neutron cross-section and the thermal neutron cross-section may be used on combination to determine the fractional volume.

公开(公告)号：US10466383B2

公开(公告)日：2019-11-05

申请号：US14726050

申请日：2015-05-29

Applicant: Schlumberger Technology Corporation

Inventor： Tong Zhou ,  Christian Stoller ,  James Leslie Thornton ,  David Alan Rose

IPC: G01V5/10 ,  G01N33/24

Abstract: A method for determining a fractional volume of at least one component of a formation includes entering into a computer a number of detected radiation events resulting from imparting neutrons into the formation at an energy level of at least 1 million electron volts (MeV). The detected radiation events correspond to at least one of an energy level of the imparted neutrons and thermal or epithermal energy neutrons. A measurement of at least one additional petrophysical parameter of the formation is made. The at least one additional petrophysical parameter measurement and at least one of a fast neutron cross-section and a thermal neutron cross-section determined from the detected radiation events are used in the computer to determine the fractional volume of the at least one component of the formation. In another embodiment, the fast neutron cross-section and the thermal neutron cross-section may be used on combination to determine the fractional volume.

公开(公告)号：US09477006B2

公开(公告)日：2016-10-25

申请号：US14325234

申请日：2014-07-07

Applicant: Schlumberger Technology Corporation

Inventor： Tong Zhou ,  David Alan Rose ,  Sicco Beekman

IPC: G01V5/08 ,  G01V5/10 ,  G01V5/12

CPC classification number: G01V5/102 ,  G01V5/10 ,  G01V5/101 ,  G01V5/125

Abstract: A method for well logging includes emitting a plurality of bursts of high energy neutrons into a wellbore and formations surrounding the wellbore. During and for a selected duration after at least one of the plurality of bursts, gamma rays are detected at at least one location spaced apart from the emitting and characterizing an energy of the detected gamma rays. After the last burst, gamma rays are detected and energy spectrum and rates of detection with respect to time thereof are determined. The foregoing is repeated for a selected number of times. After the selected number of times background gamma rays are measured. At least one of the numbers of detected gamma rays during a selected time interval and an energy spectrum of the detected gamma rays during the selected time interval is used to determine selected formation properties.

Abstract translation: 用于测井的方法包括将高能中子的多个脉冲串发射到井眼和围绕井筒的地层。 在多个突发中的至少一个脉冲串之后的期间和期间，在与发射间隔开的至少一个位置检测伽马射线并表征检测到的伽马射线的能量。 在最后一次爆发之后，检测到伽马射线，并且确定了相对于其时间的能量谱和检测速率。 上述内容重复选定次数。 在选定次数后测量背景伽马射线。 在所选择的时间间隔期间检测到的伽马射线的数量中的至少一个以及所选择的时间间隔期间检测到的伽马射线的能谱被用于确定所选择的地层特性。

公开(公告)号：US20160003969A1

公开(公告)日：2016-01-07

申请号：US14325234

申请日：2014-07-07

Applicant: Schlumberger Technology Corporation

Inventor： Tong Zhou ,  David Alan Rose ,  Sicco Beekman

IPC: G01V5/10

CPC classification number: G01V5/102 ,  G01V5/10 ,  G01V5/101 ,  G01V5/125

Abstract: A method for well logging includes emitting a plurality of bursts of high energy neutrons into a wellbore and formations surrounding the wellbore. During and for a selected duration after at least one of the plurality of bursts, gamma rays are detected at at least one location spaced apart from the emitting and characterizing an energy of the detected gamma rays. After the last burst, gamma rays are detected and energy spectrum and rates of detection with respect to time thereof are determined. The foregoing is repeated for a selected number of times. After the selected number of times background gamma rays are measured. At least one of the numbers of detected gamma rays during a selected time interval and an energy spectrum of the detected gamma rays during the selected time interval is used to determine selected formation properties.

Abstract translation: 用于测井的方法包括将高能中子的多个脉冲串发射到井眼和围绕井筒的地层。 在多个突发中的至少一个脉冲串之后的期间和期间，在与发射间隔开的至少一个位置检测伽马射线并表征检测到的伽马射线的能量。 在最后一次爆发之后，检测到伽马射线，并且确定了相对于其时间的能量谱和检测速率。 上述内容重复选定次数。 在选定次数后测量背景伽马射线。 在所选择的时间间隔期间检测到的伽马射线的数量中的至少一个以及所选择的时间间隔期间检测到的伽马射线的能谱被用于确定所选择的地层特性。

公开(公告)号：US20160349398A1

公开(公告)日：2016-12-01

申请号：US14726050

申请日：2015-05-29

Applicant: Schlumberger Technology Corporation

Inventor： Tong Zhou ,  Christian Stoller ,  James Leslie Thornton ,  David Alan Rose

IPC: G01V5/10 ,  E21B49/00

CPC classification number: G01V5/10 ,  G01N33/24 ,  G01V5/104 ,  G01V5/107 ,  G01V5/108

Abstract: A method for determining a fractional volume of at least one component of a formation includes entering into a computer a number of detected radiation events resulting from imparting neutrons into the formation at an energy level of at least 1 million electron volts (MeV). The detected radiation events correspond to at least one of an energy level of the imparted neutrons and thermal or epithermal energy neutrons. A measurement of at least one additional petrophysical parameter of the formation is made. The at least one additional petrophysical parameter measurement and at least one of a fast neutron cross-section and a thermal neutron cross-section determined from the detected radiation events are used in the computer to determine the fractional volume of the at least one component of the formation. In another embodiment, the fast neutron cross-section and the thermal neutron cross-section may be used on combination to determine the fractional volume.

Abstract translation: 确定地层的至少一个部件的分数体积的方法包括：以至少1百万电子伏特（MeV）的能级将中子递送到地层中来进入计算机中的多个检测到的辐射事件。 检测到的辐射事件对应于所赋予的中子和热或超热能中子的能级中的至少一个。 进行地层至少一个附加岩石物理参数的测量。 在计算机中使用从检测到的辐射事件确定的至少一个额外的岩石物理参数测量以及快中子横截面和热中子截面中的至少一个，以确定所述至少一个部件的分数体积 形成。 在另一个实施例中，快中子横截面和热中子横截面可以组合使用以确定分数体积。