公开(公告)号：US20160032708A1

公开(公告)日：2016-02-04

申请号：US14783244

申请日：2014-04-08

Applicant: PRAD RESEARCH AND DEVELOPMENT LIMITED ,  SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Ahmed Amine Mahjoub ,  Sebastien Isambert ,  Emmanuel Fayeulle ,  Didier Fouillou ,  Michael L. Evans ,  Christian Stoller

IPC: E21B47/01 ,  E21B17/10

CPC classification number: E21B47/011 ,  E21B17/1078

Abstract: A downhole tool operable for conveyance within a wellbore extending into a subterranean formation, and for obtaining one or more measurements of the subterranean formation, wherein the downhole tool comprises a sensor, a pressure housing containing the sensor and mounted on an external surface of the downhole tool, and a sliding stabilizer covering the pressure housing.

Abstract translation: 井下工具，其可操作用于在延伸到地下地层内的井筒内传送，并且用于获得地下地层的一个或多个测量值，其中所述井下工具包括传感器，包含所述传感器并安装在所述井下的外表面上的压力壳体 工具和覆盖压力壳体的滑动稳定器。

公开(公告)号：US09052404B2

公开(公告)日：2015-06-09

申请号：US13728901

申请日：2012-12-27

Applicant: Schlumberger Technology Corporation

Inventor： Michael L. Evans ,  Avtandil Tkabladze ,  Christian Stoller

IPC: G01V5/08 ,  G01V5/04 ,  G01V5/10

CPC classification number: G01V5/08 ,  G01V5/04 ,  G01V5/10

Abstract: A well-logging device may include a housing to be positioned within a borehole of a subterranean formation, and at least one radiation source carried by the housing to direct radiation into the subterranean formation. The well-logging device may also include noble gas-based radiation detectors carried by the housing in azimuthally spaced relation to detect radiation from the subterranean formation. A controller may determine at least one property of the subterranean formation based upon the detected radiation from the noble gas-based radiation detectors.

Abstract translation: 测井装置可以包括要定位在地下地层的钻孔内的壳体，以及由壳体承载以将辐射引导到地下地层中的至少一个辐射源。 测井装置还可以包括以方位角间隔的关系由壳体承载的惰性气体辐射探测器，以检测来自地下地层的辐射。 控制器可以基于来自稀有气体的辐射检测器的检测到的辐射来确定地下地层的至少一个性质。

公开(公告)号：US20140097336A1

公开(公告)日：2014-04-10

申请号：US14103878

申请日：2013-12-12

Applicant: Schlumberger Technology Corporation

Inventor： Michael L. Evans ,  Christian Stoller

IPC: G01V5/14

CPC classification number: G01V5/145 ,  G01V5/14

Abstract: An apparatus can measure characteristics of a formation surrounding a borehole. The apparatus includes a tool body having a neutron measurement section and a density measurement section. The neutron measurement section includes a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source. The density measurement section includes a gamma ray source and a gamma ray detector arrangement spaced in an axial direction from the gamma ray source. The neutron measurement section and the density measurement section are positioned in the tool body so that the sections overlap in the axial direction and are azimuthally spaced apart in the tool body. The tool body also includes shielding to block a direct signal path from the neutron source to the gamma ray detector arrangement and to block a direct signal path from the gamma ray source to the neutron detector arrangement.

Abstract translation: 设备可以测量围绕钻孔的地层的特征。 该装置包括具有中子测量部分和密度测量部分的工具主体。 中子测量部分包括在中子源的轴向上间隔开的中子源和中子探测器。 密度测量部分包括在伽马射线源的轴向上间隔开的伽马射线源和伽马射线检测器装置。 中子测量部分和密度测量部分位于工具主体中，使得部分在轴向方向上重叠并且在工具主体中在方位角间隔开。 工具主体还包括屏蔽以阻挡从中子源到伽马射线检测器装置的直接信号路径，并且阻挡从伽马射线源到中子探测器装置的直接信号路径。

公开(公告)号：US20130187035A1

公开(公告)日：2013-07-25

申请号：US13728937

申请日：2012-12-27

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Avtandil Tkabladze ,  Michael L. Evans ,  Christian Stoller

IPC: G01V5/08 ,  G01V5/10

CPC classification number: G01V5/08 ,  G01V5/10

Abstract: A well-logging device may include a housing to be positioned within a larger borehole of a subterranean formation and thereby define a stand-off distance with respect to the larger borehole. The well-logging device may also include at least one radiation source carried by the housing to direct radiation into the subterranean formation, and radiation detectors carried by the housing in azimuthally spaced relation to detect radiation from the subterranean formation. The well-logging device may further include a controller to cooperate with the radiation detectors to determine at least one property of the subterranean formation corrected for the stand-off distance.

Abstract translation: 测井装置可以包括壳体，其被定位在地层的较大钻孔内，从而限定相对于较大钻孔的间隔距离。 测井装置还可以包括由壳体承载的至少一个辐射源以将辐射引导到地下地层中，以及辐射探测器，其以方位角间隔的关系承载，以检测来自地下地层的辐射。 测井装置还可以包括与辐射探测器配合的控制器，以确定对于间隔距离校正的地层的至少一个性质。

公开(公告)号：US20150176402A1

公开(公告)日：2015-06-25

申请号：US14628962

申请日：2015-02-23

Applicant: Schlumberger Technology Corporation

Inventor： Ankur Prakash ,  John C. Rasmus ,  Richard J. Radtke ,  Michael L. Evans ,  Lee Dolman

IPC: E21B49/00 ,  E21B49/08

CPC classification number: E21B49/003 ,  E21B49/005 ,  E21B49/087 ,  E21B2049/085

Abstract: Downhole drilling fluid measurements are made as a function of time or as a function of depth. A change in the downhole drilling fluid measurements is correlated to a feature of a formation penetrated by a drill bit or to a feature of fluids in the formation. The downhole drilling fluid measurements may include density, photoelectric factor, hydrogen index, salinity, thermal neutron capture cross section (Sigma), resistivity, slowness, slowing down time, sound velocity, and elemental composition. The feature may include fluid balance, hole-cleaning, a kick, a shallow water flow, a formation fluid property, formation fluid typing, geosteering, geostopping, or an environmental correction. A downhole system has a measurement-while-drilling tool or a logging-while-drilling tool and a processor capable of obtaining the downhole drilling fluid measurements and correlating the change in the downhole drilling fluid measurements.

Abstract translation: 井下钻井液测量作为时间的函数或作为深度的函数。 井下钻井液测量的变化与由钻头渗透的地层特征或地层中流体特征相关。 井下钻井液测量可以包括密度，光电因子，氢指数，盐度，热中子俘获截面（Sigma），电阻率，缓慢，减速时间，声速和元素组成。 该特征可以包括流体平衡，孔清洁，踢脚，浅水流，地层流体性质，地层流体分类，地质导向，地质倾斜或环境校正。 井下系统具有钻孔测量工具或钻井测井工具和能够获得井下钻井液测量值并与井下钻井液测量值的变化相关联的处理器。

公开(公告)号：US08969792B2

公开(公告)日：2015-03-03

申请号：US14103878

申请日：2013-12-12

Applicant: Schlumberger Technology Corporation

Inventor： Michael L. Evans ,  Christian Stoller

IPC: G01V5/14

CPC classification number: G01V5/145 ,  G01V5/14

Abstract: An apparatus can measure characteristics of a formation surrounding a borehole. The apparatus includes a tool body having a neutron measurement section and a density measurement section. The neutron measurement section includes a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source. The density measurement section includes a gamma ray source and a gamma ray detector arrangement spaced in an axial direction from the gamma ray source. The neutron measurement section and the density measurement section are positioned in the tool body so that the sections overlap in the axial direction and are azimuthally spaced apart in the tool body. The tool body also includes shielding to block a direct signal path from the neutron source to the gamma ray detector arrangement and to block a direct signal path from the gamma ray source to the neutron detector arrangement.

Abstract translation: 设备可以测量围绕钻孔的地层的特征。 该装置包括具有中子测量部分和密度测量部分的工具主体。 中子测量部分包括在中子源的轴向上间隔开的中子源和中子探测器。 密度测量部分包括在伽马射线源的轴向上间隔开的伽马射线源和伽马射线检测器装置。 中子测量部分和密度测量部分位于工具主体中，使得部分在轴向方向上重叠并且在工具主体中在方位角间隔开。 工具主体还包括屏蔽以阻挡从中子源到伽马射线检测器装置的直接信号路径，并且阻挡从伽马射线源到中子探测器装置的直接信号路径。

公开(公告)号：US20140034821A1

公开(公告)日：2014-02-06

申请号：US13728901

申请日：2012-12-27

Applicant: Schlumberger Technology Corporation

Inventor： Michael L. Evans ,  Avtandil Tkabladze ,  Christian Stoller

IPC: G01V5/08

CPC classification number: G01V5/08 ,  G01V5/04 ,  G01V5/10

Abstract: A well-logging device may include a housing to be positioned within a borehole of a subterranean formation, and at least one radiation source carried by the housing to direct radiation into the subterranean formation. The well-logging device may also include noble gas-based radiation detectors carried by the housing in azimuthally spaced relation to detect radiation from the subterranean formation. A controller may determine at least one property of the subterranean formation based upon the detected radiation from the noble gas-based radiation detectors.

Abstract translation: 测井装置可以包括要定位在地下地层的钻孔内的壳体，以及由壳体承载以将辐射引导到地下地层中的至少一个辐射源。 测井装置还可以包括以方位角间隔的关系由壳体承载的惰性气体辐射探测器，以检测来自地下地层的辐射。 控制器可以基于来自稀有气体的辐射检测器的检测到的辐射来确定地下地层的至少一个性质。

公开(公告)号：US20140034822A1

公开(公告)日：2014-02-06

申请号：US13728918

申请日：2012-12-27

Applicant: Schlumberger Technology Corporation

Inventor： Michael L. Evans ,  Avtandil Tkabladze ,  Christian Stoller

IPC: G01V5/08

CPC classification number: G01V5/08 ,  G01V5/101

Abstract: A well-logging device may include a housing to be positioned within a borehole of a subterranean formation and at least one radiation source carried by the housing to direct radiation into the subterranean formation. The well-logging device may also include noble gas-based radiation detectors carried by the housing to detect radiation from the subterranean formation. At least one of the noble detectors is at a first axial spacing from the at least one radiation source, and at least one other of the noble gas-based radiation detectors is at a second axial spacing from the at least one radiation source different from the first axial spacing. A controller may determine at least one property of the subterranean formation based upon the detected radiation from the noble gas-based radiation detectors.

Abstract translation: 测井装置可以包括要被定位在地层的钻孔内的壳体和由壳体承载的至少一个辐射源以将辐射引导到地下地层中。 测井装置还可以包括由壳体携带的基于惰性气体的辐射探测器来检测来自地层的辐射。 至少一个贵族检测器处于与至少一个辐射源的第一轴向间隔，并且至少另一个基于惰性气体的辐射探测器处于与不同于该辐射源的至少一个辐射源的第二轴向间隔 第一轴向间距。 控制器可以基于来自稀有气体的辐射检测器的检测到的辐射来确定地下地层的至少一个性质。