专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10267946B2 Magnetic resonance pulse sequences having wait times based on carrier speed 有权
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
IPC分类号： G01V1/00 , G01V3/32 , G01V3/38 , G01N1/00 , G01R1/00
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.

2. 发明申请

US20170254919A1 MOTION DETECTION AND CORRECTION OF MAGNETIC RESONANCE DATA 审中-公开
公开(公告)号：US20170254919A1
公开(公告)日：2017-09-07
申请号：US15061636
申请日：2016-03-04
申请人： Radu Coman , Holger Tietjen , Martin Blanz , Holger F. Thern
发明人： Radu Coman , Holger Tietjen , Martin Blanz , Holger F. Thern
IPC分类号： G01V3/32 , E21B49/08 , E21B47/12 , E21B49/00
CPC分类号： G01V3/32 , E21B47/12 , E21B49/00 , E21B49/08 , G01N24/081 , G01R33/36 , G01R33/383 , G01R33/44 , G01R33/448
摘要： A nuclear magnetic resonance (NMR) apparatus includes a transmitting assembly configured to emit one or more dual-wait-time pulse sequences, and a receiving assembly configured to detect a long-wait-time echo train and a short-wait-time echo train. The apparatus also includes a processor configured to perform at least one of: estimating a difference between the long-wait-time echo train and the short-wait-time echo train to generate a differential echo-train, inverting the differential echo-train into a differential T2 distribution, and detecting a motion artefact in response to determining that the differential echo-train includes a short-T2 porosity fraction that is greater than a threshold value; and inverting two echo trains into two T2 distributions, calculating at least two porosity fractions for each of the two T2 distributions, estimating a shift of a porosity amount between the at least two porosity fractions, and detecting the motion artefact based on the shift.

3. 发明授权

US09250347B2 Method to look ahead of the bit 有权
标题翻译：前瞻性的方法
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
IPC分类号： G01V1/46 , E21B47/00
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。

4. 发明授权

US08800685B2 Drill-bit seismic with downhole sensors 有权
标题翻译：钻井地震与井下传感器
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
IPC分类号： E21B47/14 , E21B49/00
CPC分类号： E21B47/01 , G01V1/303 , G01V1/42
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。

5. 发明授权

US10539705B2 Formation evaluation utilizing dual wait time nuclear magnetic resonance 有权
公开(公告)号：US10539705B2
公开(公告)日：2020-01-21
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 , G01V3/38 , G01V3/40
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.

6. 发明授权

US10466381B2 NMR logging in formation with micro-porosity by using first echoes from multiple measurements 有权
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
IPC分类号： G01V3/32 , G01R33/44 , G01N15/08
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.

7. 发明授权

US10126457B2 Motion detection and correction of magnetic resonance data 有权
公开(公告)号：US10126457B2
公开(公告)日：2018-11-13
申请号：US15061636
申请日：2016-03-04
申请人： Radu Coman , Holger Tietjen , Martin Blanz , Holger F. Thern
发明人： Radu Coman , Holger Tietjen , Martin Blanz , Holger F. Thern
IPC分类号： G01V3/32 , E21B49/08 , E21B47/12 , E21B49/00 , G01N24/08 , G01R33/36 , G01R33/383 , G01R33/44
摘要： A nuclear magnetic resonance (NMR) apparatus includes a transmitting assembly configured to emit one or more dual-wait-time pulse sequences, and a receiving assembly configured to detect a long-wait-time echo train and a short-wait-time echo train. The apparatus also includes a processor configured to perform at least one of: estimating a difference between the long-wait-time echo train and the short-wait-time echo train to generate a differential echo-train, inverting the differential echo-train into a differential T2 distribution, and detecting a motion artefact in response to determining that the differential echo-train includes a short-T2 porosity fraction that is greater than a threshold value; and inverting two echo trains into two T2 distributions, calculating at least two porosity fractions for each of the two T2 distributions, estimating a shift of a porosity amount between the at least two porosity fractions, and detecting the motion artefact based on the shift.

8. 发明授权

US08947974B2 Seismic measurements while drilling 有权
标题翻译：钻孔时的地震测量
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
IPC分类号： G01V1/50 , G01V1/42
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。

9. 发明申请

US20120103688A1 Drill-Bit Seismic With Downhole Sensors 有权
标题翻译：钻头地震与井下传感器
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
CPC分类号： E21B47/01 , G01V1/303 , G01V1/42
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。

10. 发明授权

US10739489B2 Low gradient magnetic resonance logging for measurement of light hydrocarbon reservoirs 有权
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.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式