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公开(公告)号：US07772545B2
公开(公告)日：2010-08-10
申请号：US12178907
申请日：2008-07-24
IPC分类号： G01V5/10
CPC分类号： G01V5/101
摘要： Nuclear logging tool. At least some of the illustrative embodiments are methods comprising placing a logging tool within a borehole proximate to an earth formation, releasing energetic neutrons from the logging tool, and receiving (at a detector within the logging tool) gamma returns indicative of interactions of the neutrons with elements of the logging tool and elements of the formation, and the gammas indicative of neutron interactions with elements of the logging tool are substantially free from gammas indicative of interactions with iron atoms.
摘要翻译： 核测井工具。 示例性实施例中的至少一些是包括将测井工具放置在靠近地层的钻孔内的方法，从测井工具释放能量中子，以及接收（在测井工具内的检测器处），表明中子的相互作用 记录测井工具的元素和地层的元素，并且指示与测井工具的元件的中子相互作用的伽马基本上没有指示与铁原子相互作用的伽马。
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公开(公告)号：US20100019138A1
公开(公告)日：2010-01-28
申请号：US12178907
申请日：2008-07-24
IPC分类号： G01V5/10
CPC分类号： G01V5/101
摘要： Nuclear logging tool. At least some of the illustrative embodiments are methods comprising placing a logging tool within a borehole proximate to an earth formation, releasing energetic neutrons from the logging tool, and receiving (at a detector within the logging tool) gamma returns indicative of interactions of the neutrons with elements of the logging tool and elements of the formation, and the gammas indicative of neutron interactions with elements of the logging tool are substantially free from gammas indicative of interactions with iron atoms.
摘要翻译： 核测井工具。 示例性实施例中的至少一些是包括将测井工具放置在靠近地层的钻孔内的方法，从测井工具释放能量中子，以及接收（在测井工具内的检测器处），表明中子的相互作用 记录测井工具的元素和地层的元素，并且指示与测井工具的元素的中子相互作用的伽马基本上没有指示与铁原子相互作用的伽马。
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公开(公告)号：US06301959B1
公开(公告)日：2001-10-16
申请号：US09236993
申请日：1999-01-26
IPC分类号： E21B4710
CPC分类号： E21B49/10 , E21B33/1243
摘要： A formation fluid sampling probe uses two hydraulic lines to recover formation fluids from two zones in a borehole. One of the zones is a guard zone and the other is a probe zone. The guard zone and the probe zone are isolated from each other by mechanical means, with the guard zone surrounding the probe zone and shielding it from the direct access to the borehole fluids. Operation of the tool involves withdrawal of fluid from both zones. Borehole fluids are preferentially drawn into the guard zone so that the probe zone recovers the formation fluid substantially free of borehole fluids. Separation of the guard zone from the probe zone may be accomplished by means of an elastomeric guard ring, by inflatable packers or by tubing. The device can be adapted for use either on a wireline or in an early evaluation system on a drillstring.
摘要翻译： 地层流体采样探头使用两条液压管路从钻孔中的两个区域回收地层流体。 其中一个区域是保护区域，另一个区域是探测区域。 防护区域和探测区域通过机械手段相互隔离，防护区围绕探头区域，并使其不受直接进入井眼液体的作用。 该工具的操作涉及从两个区域中取出流体。 井眼流体优选地被吸入防护区域，使得探针区域回收基本上没有钻孔流体的地层流体。 保护区域与探头区域的分离可以通过弹性防护环，充气封隔器或管道来实现。 该装置可以适用于在线缆上或在钻柱上的早期评估系统中使用。
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公开(公告)号：US5934374A
公开(公告)日：1999-08-10
申请号：US691125
申请日：1996-08-01
IPC分类号： E21B49/10
CPC分类号： E21B49/10
摘要： This invention provides a formation evaluation tool for collecting a formation fluid in a chamber at a predetermined pressure and for maintaining the pressure of the collected fluid at a desired level during the retrieval of the chamber to the surface. The formation fluid is pumped into the chamber while a piston exposed to the hydrostatic pressure maintains the chamber pressure at the hydrostatic pressure. During retrieval of the chamber, the pressure in the chamber is maintained at a predetermined level by pumping wellbore fluid to the piston. A control unit at the surface is utilized for controlling the operation of the formation tool.
摘要翻译： 本发明提供了一种用于在预定压力下收集腔室中的地层流体的地层评价工具，并且用于在将腔室取回到表面期间将收集的流体的压力保持在期望的水平。 地层流体被泵送到室中，同时暴露于静水压力的活塞将室压力保持在静水压力。 在室的取出期间，通过将井筒流体泵送到活塞，将室中的压力保持在预定水平。 表面上的控制单元用于控制形成工具的操作。
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5.发明授权
公开(公告)号：US4852401A
公开(公告)日：1989-08-01
申请号：US208436
申请日：1988-06-20
申请人： Andrew A. Hrametz , William B. King
发明人： Andrew A. Hrametz , William B. King
摘要： A fluid flow velocity measuring device is shown. In the preferred and illustrated embodiment, an elongate body receives a removable spinner cartridge assembly. The assembly is formed of an elongate sleeve surrounding a rotating shaft supported by bearing assemblies at opposite ends of the shaft. The shaft supports a spinner. Particular sizes of spinners are calibrated to a particular flow velocity ranges and density of material. The insert is held in position by a compressed spring behind the insert so that fluid flow is directed from an inlet port in the tool adjacent a petal basket, along an axial passage in the tool, and through the spinner and out through an outlet port.
摘要翻译： 示出了流体流速测量装置。 在优选和示出的实施例中，细长主体容纳可拆卸的旋转筒组件。 组件由细长的套筒形成，该细长的套筒围绕由轴的相对端处的轴承组件支撑的旋转轴。 轴支撑旋转器。 纺纱机的特殊尺寸根据特定的流速范围和材料密度进行校准。 插入件通过插入件后面的压缩弹簧保持在适当位置，使得流体流动沿着工具中的轴向通道从工具中的邻近花瓣篮的入口端口引导，并且通过旋转器并通过出口移出。
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