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公开(公告)号：US20160003960A1
公开(公告)日：2016-01-07
申请号：US14423904
申请日：2014-03-27
发明人： Chung Chang , Abbas Arian , Gary Kainer , Paul G. Junghans , Arthur Cheng , Randall Bennett Jones
IPC分类号： G01V1/52
CPC分类号： G01V1/523
摘要： The disclosure addresses multiple embodiments of an acoustic isolator, and an acoustic logging tool which incorporates the acoustic isolator. The acoustic isolator is configured to minimize acoustic transmissions which could otherwise adversely affect acoustical measurements being made by an acoustic receiver. The described acoustic isolators include a plurality of longitudinally arranged mass members coupled to a central supporting structure, in a configuration to reduce acoustic transmissions in at least selected frequency ranges.
摘要翻译： 本公开涉及声隔离器的多个实施例，以及结合声隔离器的声学测井工具。 声学隔离器被配置为最小化声学传播，否则这将不利地影响由声学接收器进行的声学测量。 所描述的隔音器包括耦合到中央支撑结构的多个纵向布置的质量构件，其构造为在至少选定的频率范围内减小声传播。
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公开(公告)号：US20150136516A1
公开(公告)日：2015-05-21
申请号：US14400767
申请日：2014-03-27
发明人： Chung Chang , Abbas Arian , Randall Bennett Jones , Gary Kainer , Arthur Cheng
IPC分类号： G01V1/44
摘要： The disclosure addresses acoustic receivers including an acoustic isolator structure, and an acoustic logging tool which incorporates the acoustic receiver. The acoustic receiver isolation structure is configured to minimize acoustic transmissions which could otherwise adversely affect acoustical measurements being made by an acoustic receiver. The described acoustic receiver includes a plurality of longitudinally arranged mass members coupled to a central supporting structure, in a configuration to reduce acoustic transmissions in at least selected frequency ranges.
摘要翻译： 该公开内容涉及包括声学隔离器结构的声学接收器以及结合声学接收器的声学测井工具。 声学接收器隔离结构被配置为最小化声学传输，否则这将不利地影响由声学接收器进行的声学测量。 所描述的声学接收器包括多个纵向布置的质量构件，其耦合到中央支撑结构，其构造为在至少选定的频率范围内减少声学传播。
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公开(公告)号：US10024992B2
公开(公告)日：2018-07-17
申请号：US14907958
申请日：2015-08-06
摘要： An acoustic tool for evaluating a geologic formation includes a housing member disposed between transmitter and receiver sections of the acoustic tool. The housing member defines a change in direction in an acoustic path extending therethrough such that acoustic signals traveling through the housing member are delayed and disrupted. The delay and disruption may isolate the acoustic signals traveling through the housing member from acoustic signals traveling through the geologic formation. Thus, the acoustic tool may facilitate identification and evaluation of acoustic signals traveling through the geologic formation.
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公开(公告)号：US08698502B2
公开(公告)日：2014-04-15
申请号：US13624047
申请日：2012-09-21
发明人： Jing Li , Gary Kainer , Marvin Rourke , Michael Bittar
IPC分类号： G01V3/08
CPC分类号： G01V3/08 , G01V3/30 , G06F1/28 , G06F1/3203 , Y02D10/126
摘要： A method for analyzing a subterranean formation porosity is disclosed. The apparent dielectric constant of the subterranean formation and an apparent resistivity of the subterranean formation are measured. The measured values are used to determine a measured formation loss tangent. The formation water loss tangent can be expressed by the water dielectric constant and the water resistivity. The measured formation loss tangent and the formation water loss tangent are then used to determine at least one of an actual dielectric constant of the subterranean formation water and an actual resistivity of the subterranean formation water. The actual formation porosity may be obtained using the estimated water resistivity and water dielectric constant.
摘要翻译： 公开了一种用于分析地下孔隙度的方法。 测量地层的表观介电常数和地层的视电阻率。 测量值用于确定测量的地层损耗角正切值。 地层水分损失角正切值可以用水介电常数和水电阻率表示。 然后使用测量的地层损耗角正切和地层水分损失角正切来确定地下地层水的实际介电常数和地下地下水的实际电阻率中的至少一个。 可以使用估计的水电阻率和水介电常数获得实际的地层孔隙度。
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公开(公告)号：US20170212274A1
公开(公告)日：2017-07-27
申请号：US15328784
申请日：2016-08-18
发明人： Baichun Sun , Kristoffer T. Walker , Philip W. Tracadas , Wei Li , Ruijia Wang , Gary Kainer , Chung Chang
CPC分类号： G01V13/00 , G01V1/284 , G01V1/288 , G01V1/46 , G01V1/48 , G01V2200/14 , G01V2210/41
摘要： A method and system of performing quality control for a downhole tool. An acoustic source is employed to generate a Stoneley wave, and acoustic receivers generate signals indicative of the Stoneley wave. A reference value is calculated from the signals to assess the quality of the receivers. The reference value may be for a selected receiver or a selected receiver ring. The reference value is compared to a threshold deviation to determine if the reference value is outside the threshold deviation. If the reference value is outside of the threshold deviation, the deviation for one of the selected receiver or the selected receiver ring is corrected.
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公开(公告)号：US09322947B2
公开(公告)日：2016-04-26
申请号：US14400767
申请日：2014-03-27
发明人： Chung Chang , Abbas Arian , Randall Bennett Jones , Gary Kainer , Arthur Cheng
摘要： The disclosure addresses acoustic receivers including an acoustic isolator structure, and an acoustic logging tool which incorporates the acoustic receiver. The acoustic receiver isolation structure is configured to minimize acoustic transmissions which could otherwise adversely affect acoustical measurements being made by an acoustic receiver. The described acoustic receiver includes a plurality of longitudinally arranged mass members coupled to a central supporting structure, in a configuration to reduce acoustic transmissions in at least selected frequency ranges.
摘要翻译： 该公开内容涉及包括声学隔离器结构的声学接收器以及结合声学接收器的声学测井工具。 声学接收器隔离结构被配置为最小化声学传输，否则这将不利地影响由声学接收器进行的声学测量。 所描述的声学接收器包括多个纵向布置的质量构件，其耦合到中央支撑结构，其构造为在至少选定的频率范围内减少声学传播。
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公开(公告)号：US08947092B2
公开(公告)日：2015-02-03
申请号：US13949044
申请日：2013-07-23
发明人： Jing Li , Michael Bittar , Gary Kainer , Marvin Rourke
CPC分类号： G01V3/08 , G06F1/28 , G06F1/3203
摘要： A method for analyzing a subterranean formation porosity is disclosed. The apparent dielectric constant of the subterranean formation and an apparent resistivity of the subterranean formation are measured. The measured values are used to determine a measured formation loss tangent. The formation water loss tangent can be expressed by the water dielectric constant and the water resistivity. The measured formation loss tangent and the formation water loss tangent are then used to determine at least one of an actual dielectric constant of the subterranean formation water and an actual resistivity of the subterranean formation water. The actual formation porosity may be obtained using the estimated water resistivity and water dielectric constant.
摘要翻译： 公开了一种用于分析地下孔隙度的方法。 测量地层的表观介电常数和地层的视电阻率。 测量值用于确定测量的地层损耗角正切值。 地层水分损失角正切值可以用水介电常数和水电阻率表示。 然后使用测量的地层损耗角正切和地层水分损失角正切来确定地下地层水的实际介电常数和地下地层水的实际电阻率中的至少一个。 可以使用估计的水电阻率和水介电常数获得实际的地层孔隙度。
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公开(公告)号：US10082020B2
公开(公告)日：2018-09-25
申请号：US15109444
申请日：2014-10-24
IPC分类号： G01V1/40 , E21B47/14 , G01V1/52 , E21B28/00 , E21B31/00 , E21B47/00 , E21B49/00 , G01V1/145 , G01V1/02
CPC分类号： E21B47/14 , E21B28/00 , E21B31/005 , E21B47/0005 , E21B49/00 , G01V1/145 , G01V1/159 , G01V1/52
摘要： According to embodiments of the disclosure, a downhole tool for taking acoustic measurements in a wellbore is provided. The tool may have an acoustic dipole transmitter with a piston made from a soft magnetic material, mounted on a centering spring between the first coil and the second coil, which moves the piston bi-directionally along a longitudinal axis when energized. The tool may also have a feedback winding on at least one of the first or second coils. The tool may also have a circuit for energizing the first and second coils which includes an input for receiving a signal responsive to the position of the piston relative to the coils and a processor for determining an output waveform used to generate an acoustic signal.
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公开(公告)号：US09952344B2
公开(公告)日：2018-04-24
申请号：US15115636
申请日：2014-02-27
发明人： Chung Chang , Tianrun Chen , Gary Kainer , Haoshi Song
CPC分类号： G01V1/52 , G01V1/145 , G01V1/42 , G01V1/46 , G01V2200/16
摘要： A disclosed high-purity dipole transmitter has a longitudinal axis, an oscillation axis, and a side axis, each of the axes being mutually orthogonal. The transmitter includes an outer shell having external surfaces for displacing fluid along the oscillation axis. The transmitter also includes a reaction mass positioned inside the outer shell. The transmitter also includes an electromagnetic actuator that drives the outer shell relative to the reaction mass. The transmitter also includes a pair of matching springs separated along the longitudinal axis, where each spring is coupled between the outer shell and the reaction mass to enable compliant dipole motion of the outer shell along the oscillation axis while suppressing motion along other axes. Each spring includes a beam arrangement with each beam extending lengthwise in a direction parallel to the side axis and being thinnest in a direction parallel to the oscillation axis. The outer shell, the reaction mass, the electromagnetic actuator, and each spring, have mirror symmetry in a plane that includes the oscillation axis and the longitudinal axis, and have mirror symmetry in a plane that includes the side axis and the longitudinal axis.
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公开(公告)号：US20170168186A1
公开(公告)日：2017-06-15
申请号：US15115636
申请日：2014-02-27
发明人： Chung Chang , Tianrun Chen , Gary Kainer , Haoshi Song
CPC分类号： G01V1/52 , G01V1/145 , G01V1/42 , G01V1/46 , G01V2200/16
摘要： A disclosed high-purity dipole transmitter has a longitudinal axis, an oscillation axis, and a side axis, each of the axes being mutually orthogonal. The transmitter includes an outer shell having external surfaces for displacing fluid along the oscillation axis. The transmitter also includes a reaction mass positioned inside the outer shell. The transmitter also includes an electromagnetic actuator that drives the outer shell relative to the reaction mass. The transmitter also includes a pair of matching springs separated along the longitudinal axis, where each spring is coupled between the outer shell and the reaction mass to enable compliant dipole motion of the outer shell along the oscillation axis while suppressing motion along other axes. Each spring includes a beam arrangement with each beam extending lengthwise in a direction parallel to the side axis and being thinnest in a direction parallel to the oscillation axis. The outer shell, the reaction mass, the electromagnetic actuator, and each spring, have mirror symmetry in a plane that includes the oscillation axis and the longitudinal axis, and have mirror symmetry in a plane that includes the side axis and the longitudinal axis.
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