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公开(公告)号：US20160334533A1
公开(公告)日：2016-11-17
申请号：US15151672
申请日：2016-05-11
申请人： Radu Coman , Martin Blanz , Holger Tietjen
发明人： Radu Coman , Martin Blanz , Holger Tietjen
IPC分类号： G01V3/32 , G01R33/561
CPC分类号： G01V3/32 , G01N24/081 , G01R33/448 , G01R33/5615 , G01R33/5617 , G01R33/56554
摘要： A nuclear magnetic resonance (NMR) apparatus includes a carrier configured to be deployed in a borehole, a magnet assembly configured to generate a static magnetic field in an earth formation, and at least one transmitting assembly configured to generate an oscillating magnetic field in a volume of interest within the formation. The apparatus also includes a pulse generator configured to apply a direct-echo pulse sequence to the at least one transmitting assembly, the direct-echo pulse sequence having a plurality of successive pulses including a first pulse and a second pulse configured to generate a first direct NMR echo, and a third pulse, the third pulse selected to at least partially separate a stimulated NMR echo from a second direct NMR echo occurring after the third pulse. The apparatus further includes at least one receiving assembly configured to detect the first and second direct echoes of an NMR echo train.
摘要翻译： 核磁共振（NMR）装置包括构造成部署在钻孔中的载体，构造成在地层中产生静磁场的磁体组件，以及至少一个传输组件，其构造成在体积中产生振荡磁场 在地层内感兴趣。 该装置还包括脉冲发生器，该脉冲发生器被配置为向至少一个发射组件施加直接回波脉冲序列，所述直接回波脉冲序列具有包括第一脉冲和第二脉冲的多个连续脉冲，所述第一脉冲和第二脉冲被配置为产生第一直接 NMR回波和第三脉冲，所述第三脉冲被选择为至少部分地将经刺激的NMR回波与在所述第三脉冲之后出现的第二直接NMR回波分离。 该装置还包括被配置为检测NMR回波串的第一和第二直接回波的至少一个接收组件。
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12.发明申请公开(公告)号：US20160116629A1
公开(公告)日：2016-04-28
申请号：US14920436
申请日：2015-10-22
申请人： Radu Coman , Holger Tietjen , Holger F. Thern , Martin Blanz
发明人： Radu Coman , Holger Tietjen , Holger F. Thern , Martin Blanz
IPC分类号： G01V3/32
摘要： A system for measuring a property of fluid in an earth formation includes a downhole tool disposed in a borehole and configured to be movable within the borehole and a nuclear magnetic resonance (NMR) measurement device including a transmitter configured to emit at least two pulse trains of magnetic energy into the earth formation and a detector configured to detect a long-TW echo train and a short-TW echo train resulting from the at least two pulse trains. The system also includes a processor configured to combine the information from the at least two pulse trains and a rate of penetration of the downhole tool to form a measurement of the property.
摘要翻译： 用于测量地层中的流体性质的系统包括设置在钻孔中并被配置为可在钻孔内移动的井下工具，以及包括发射器的核磁共振（NMR）测量装置，所述核磁共振（NMR）测量装置被配置为发射至少两个脉冲列 磁能进入地层，以及检测器，被配置为检测长TW回波串和由至少两个脉冲序列产生的短TW回波串。 该系统还包括处理器，该处理器被配置为组合来自至少两个脉冲序列的信息和井下工具的穿透速率以形成该属性的测量。
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公开(公告)号：US10267946B2
公开(公告)日：2019-04-23
申请号：US15170519
申请日：2016-06-01
申请人： Radu Coman
发明人： Radu Coman
摘要： An embodiment of a nuclear magnetic resonance (NMR) apparatus for estimating properties of an earth formation includes an NMR measurement device including a transmitting assembly configured to emit a pulse sequence and a receiving assembly configured to detect an echo train based on the pulse sequence, and a processor. The processor is configured to perform receiving input parameters including an axial speed of the NMR measurement device and a T1 value associated with a selected formation fluid, analyzing polarization data associated with the T1 value, the polarization data describing a dependency between polarization and axial speed, determining a wait time for the pulse sequence based on the polarization data, applying the pulse sequence with the determined wait time to the transmitting assembly, and estimating a property of the earth formation based on the echo train detected by the receiving assembly in response to the pulse sequence.
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公开(公告)号：US09250347B2
公开(公告)日：2016-02-02
申请号：US13488992
申请日：2012-06-05
申请人： Radu Coman
发明人： Radu Coman
CPC分类号： G01V1/46 , E21B47/00 , G01V2200/12 , G01V2210/161
摘要： The present disclosure is direct to method of performing measurements while drilling in an earth formation. The method may include estimating a location of a seismic reflector using signals from one or more of seismic sensors located at a plurality of locations in a borehole and the drilling depth of the one or more seismic sensors in a borehole. The signals may include information about times when the seismic sensors detect a direct wave and a reflected wave. The method may include storing the information in a memory using a processor.
摘要翻译： 本公开直接涉及在地层中钻孔时进行测量的方法。 该方法可以包括使用位于钻孔中的多个位置处的一个或多个地震传感器的信号以及钻孔中的一个或多个地震传感器的钻孔深度来估计地震反射器的位置。 信号可以包括关于地震传感器检测直接波和反射波的时间的信息。 该方法可以包括使用处理器将信息存储在存储器中。
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公开(公告)号：US08800685B2
公开(公告)日：2014-08-12
申请号：US13219958
申请日：2011-08-29
申请人： Radu Coman , Sunil Kumar
发明人： Radu Coman , Sunil Kumar
摘要： A drill-bit seismic method where the seismic receivers are located in the BHA. The data detected by these receivers is processed by a downhole processing unit in order to estimate the interval velocity of the seismic wave between the sensors and between the bit and a sensor. Additionally, the processed data might provide the distance to a seismic reflector close to the borehole and the average seismic velocity between the well and this reflector. The processed data can be transmitted to surface location by mud-pulse telemetry. The pilot signal can be also used to process seismic data recorded by receivers located at the earth surface (or close to it).
摘要翻译： 地震接收机位于BHA中的钻头地震方法。 这些接收机检测到的数据由井下处理单元进行处理，以估计传感器之间和位与传感器之间的地震波的间隔速度。 另外，经处理的数据可以提供靠近钻孔的地震反射器的距离以及井与该反射器之间的平均地震速度。 处理后的数据可以通过泥浆脉冲遥测传输到地面位置。 导频信号还可用于处理位于地表（或靠近地面）的接收机记录的地震数据。
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16.发明授权公开(公告)号：US10466381B2
公开(公告)日：2019-11-05
申请号：US14979998
申请日：2015-12-28
申请人： Radu Coman
发明人： Radu Coman
摘要： A method for estimating a property of a subsurface material includes: conveying a carrier through a borehole penetrating the subsurface material; performing at least two magnetic resonance (NMR) measurements in a volume of interest in the subsurface material using an NMR tool disposed on the carrier, wherein (i) a first NMR measurement has a first wait time and a first first-echo time and a second NMR measurement has a second wait time and a second first-echo time, (ii) the first wait time and the second wait time are less than or equal to 500 milliseconds, and (iii) the first first-echo time and the second first-echo time are different; receiving at least the first-echo of the first NMR measurement and receiving at least the first-echo of the second NMR measurement; and estimating the property of the subsurface material by using the at least two measured first-echoes simultaneously.
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公开(公告)号：US08947974B2
公开(公告)日：2015-02-03
申请号：US12815864
申请日：2010-06-15
申请人： Radu Coman , Michael Neubert , Holger Mathiszik , Michael Koppe
发明人： Radu Coman , Michael Neubert , Holger Mathiszik , Michael Koppe
CPC分类号： G01V1/42
摘要： A downhole tool starts recording seismic energy. During the recording time, a surface seismic source is activated a specified number of times with a nominally defined separation between successive. The downhole sensor receives seismic waves resulting from the activation, but the time of the shooting sequence is not known downhole. The recorded data stream is processed and converted in real-time into seismic traces. A predefined number of traces are stacked and the quality of this sliding stack is used to detect time of the shooting sequence. The method could be used to detect one or several shooting sequences during a measurement window.
摘要翻译： 井下工具开始记录地震能量。 在记录时间期间，表面地震源被激活一定数量的次数，并在连续的间隔之间进行标称的分隔。 井下传感器接收到由激活产生的地震波，但射击顺序的时间在井下是不知道的。 记录的数据流被实时处理和转换成地震痕迹。 堆叠预定数量的迹线，并且使用该滑动堆栈的质量来检测拍摄顺序的时间。 该方法可用于在测量窗口期间检测一个或多个拍摄序列。
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公开(公告)号：US20120103688A1
公开(公告)日：2012-05-03
申请号：US13219958
申请日：2011-08-29
申请人： Radu Coman , Sunil Kumar
发明人： Radu Coman , Sunil Kumar
IPC分类号： E21B47/00
摘要： A drill-bit seismic method where the seismic receivers are located in the BHA. The data detected by these receivers is processed by a downhole processing unit in order to estimate the interval velocity of the seismic wave between the sensors and between the bit and a sensor. Additionally, the processed data might provide the distance to a seismic reflector close to the borehole and the average seismic velocity between the well and this reflector. The processed data can be transmitted to surface location by mud-pulse telemetry. The pilot signal can be also used to process seismic data recorded by receivers located at the earth surface (or close to it).
摘要翻译： 地震接收机位于BHA中的钻头地震方法。 这些接收机检测到的数据由井下处理单元进行处理，以估计传感器之间和位与传感器之间的地震波的间隔速度。 另外，经处理的数据可以提供靠近钻孔的地震反射器的距离以及井与该反射器之间的平均地震速度。 处理后的数据可以通过泥浆脉冲遥测传输到地面位置。 导频信号还可用于处理位于地表（或靠近地面）的接收机记录的地震数据。
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公开(公告)号：US10739489B2
公开(公告)日：2020-08-11
申请号：US14997195
申请日：2016-01-15
申请人： Radu Coman
发明人： Radu Coman
IPC分类号： G01V3/32
摘要： An embodiment of a method of performing a nuclear magnetic resonance (NMR) measurement includes disposing a NMR measurement device in a carrier in an earth formation, applying a static magnetic field into a formation, and emitting a plurality of pulse sequences into the formation, the plurality of pulse sequences including at least a first pulse sequence having a first wait time and a second pulse sequence having a second wait time. The method also includes receiving a long wait-time echo train based on the first pulse sequence and a short wait-time echo train based on the second pulse sequence. The method further includes transforming, by a processor, the echo trains into volumetric portions including a first fluid volumetric portion, estimating a longitudinal relaxation time for the first fluid volumetric portion; and identifying whether the first fluid volumetric portion is gas or light oil based on the estimated longitudinal relaxation time.
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公开(公告)号：US20170351002A1
公开(公告)日：2017-12-07
申请号：US15170519
申请日：2016-06-01
申请人： Radu Coman
发明人： Radu Coman
CPC分类号： G01V3/32 , G01N1/00 , G01R1/00 , G01V3/38 , G01V2200/00
摘要： An embodiment of a nuclear magnetic resonance (NMR) apparatus for estimating properties of an earth formation includes an NMR measurement device including a transmitting assembly configured to emit a pulse sequence and a receiving assembly configured to detect an echo train based on the pulse sequence, and a processor. The processor is configured to perform receiving input parameters including an axial speed of the NMR measurement device and a T1 value associated with a selected formation fluid, analyzing polarization data associated with the T1 value, the polarization data describing a dependency between polarization and axial speed, determining a wait time for the pulse sequence based on the polarization data, applying the pulse sequence with the determined wait time to the transmitting assembly, and estimating a property of the earth formation based on the echo train detected by the receiving assembly in response to the pulse sequence.
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