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11. 发明授权

US08127841B2 Method and system for monitoring the incursion of particulate material into a well casing within hydrocarbon bearing formations including gas hydrates 有权
标题翻译：方法和系统，用于监测颗粒材料侵入包含气体水合物的含烃层内的井套管中
公开(公告)号：US08127841B2
公开(公告)日：2012-03-06
申请号：US13018325
申请日：2011-01-31
申请人： Shunetsu Onodera , Hitoshi Sugiyama , Brian W Cho , Ahmed Al-Jubori , Masafumi Fukuhara
发明人： Shunetsu Onodera , Hitoshi Sugiyama , Brian W Cho , Ahmed Al-Jubori , Masafumi Fukuhara
IPC分类号： E21B47/04 , E21B47/06
CPC分类号： E21B23/02 , E21B43/08 , E21B43/119 , E21B2043/0115
摘要： A method and system for monitoring any incursion of particulate matter from a gas hydrate formation into a well casing used for the production of the gas hydrate and determining the degree of incursion of particulate material within the distal end of the well casing.
摘要翻译：一种用于监测从气体水合物形成到用于生产气体水合物的井套管中的任何颗粒物侵入的方法和系统，以及确定在井套管远端内颗粒材料侵入的程度。

12. 发明授权

US5055788A Borehole measurement of NMR characteristics of earth formations 失效
公开(公告)号：US5055788A
公开(公告)日：1991-10-08
申请号：US431256
申请日：1989-12-05
申请人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurrahman Sezginer
发明人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurrahman Sezginer
IPC分类号： G01R33/34 , G01R33/38 , G01R33/44 , G01V3/32
CPC分类号： G01V3/32 , G01N24/081 , G01R33/341 , G01R33/3808 , G01R33/3671 , G01R33/443 , G01R33/448
摘要： Borehole NMR logging apparatus and methods, and methods for the interpretation thereof. A logging tool is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focussed oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the Magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. Extremely rapid damping of the antenna between the transmitting and receiving modes of operation is accomplished by a Q-switch disclosed herein. The invention provides for the direct measurement of NMR decay having transverse relaxation time T.sub.2 behavior, and further provides for the fast repetition of pulsed measurements from within a borehole. An additional magnet array may be mounted offset from the first magnet configuration to prepolarize a formation before it is measured in order to pre-align a larger number of protons than the single magnet configuration could do by itself. Additional features of the invention are disclosed which increase the Signal/Noise ratio of the measured data, and improve the quality and quantity of borehole NMR measurements, per unit of time spent. Disclosed interpretation methods determine fluid flow permeability and longitudinal relaxation time T.sub.1 -type parameters by directly comparing the measured decay signals (such as T.sub.2 or T.sub.2 * type decay) to a representation which responds to both the decay time t.sub.dec and the imposed polarization period prior to such decay, t.sub.poi. The parameters of amplitude and T.sub.1 are determined and combined with certain preferred methods to generate robust values of the formation characteristics such as fluid flow permeability. Other related methods are disclosed.

13. 发明授权

US5055787A Borehole measurement of NMR characteristics of earth formations 失效
公开(公告)号：US5055787A
公开(公告)日：1991-10-08
申请号：US431368
申请日：1989-12-05
申请人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurrahman Sezginer , Weng C. Chew
发明人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurrahman Sezginer , Weng C. Chew
IPC分类号： G01R33/34 , G01R33/38 , G01R33/44 , G01V3/32
CPC分类号： G01V3/32 , G01N24/081 , G01R33/341 , G01R33/3808 , G01R33/3671 , G01R33/443 , G01R33/448
摘要： Borehole NMR logging apparatus and methods, and methods for the interpretation thereof. A logging tool is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focussed oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. Extremely rapid damping of the antenna between the transmitting and receiving modes of operation is accomplished by a Q-switch disclosed herein. The invention provides for the direct measurement of NMR decay having transverse relaxation time T.sub.2 behavior, and further provides for the fast repetition of pulsed measurements from within a borehole. An additional magnet array may be mounted offset from the first magnet configuration to prepolarize a formation before it is measured in order to pre-align a larger number of protons than the single magnet configuration could do by itself. Additional features of the invention are disclosed which increase the Signal/Noise ratio of the measured data, and improve the quality and quantity of borehole NMR measurements, per unit of time spent. Disclosed interpretation methods determine fluid flow permeability and longitudinal relaxation time T.sub.1 -type parameters by directly comparing the measured decay signals (such as T.sub.2 or T.sub.2 * type decay) to a representation which responds to both the decay time t.sub.dec and the imposed polarization period prior to such decay t.sub.poi. The parameters of amplitude and T.sub.1 are determined and combined with certain preferred methods to generate robust values of formation characteristics such as fluid flow permeability. Other related methods are disclosed.

14. 发明授权

US4933638A Borehole measurement of NMR characteristics of earth formations, and interpretations thereof 失效
公开(公告)号：US4933638A
公开(公告)日：1990-06-12
申请号：US368916
申请日：1989-06-19
申请人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurranhman Sezginer , Weng C. Chew , William E. Kenyon , Peter I. Day , Max Lipsicas
发明人： Robert L. Kleinberg , Douglas D. Griffin , Masafumi Fukuhara , Abdurranhman Sezginer , Weng C. Chew , William E. Kenyon , Peter I. Day , Max Lipsicas
IPC分类号： G01R33/34 , G01R33/38 , G01R33/44 , G01V3/18 , G01V3/32
CPC分类号： G01R33/341 , G01N24/081 , G01R33/3671 , G01R33/3808 , G01V3/32
摘要： Borehole NMR logging apparatus and methods, and methods for the interpretation thereof. A logging tool is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focussed oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. Extremely rapid damping of the antenna between the transmitting and receiving modes of operation is accomplished by a Q-switch disclosed herein. The invention provides for the direct measurement of NMR decay having transverse relaxation time T.sub.2 behavior, and further provides for the fast repetition of pulsed measurements from within a borehole. An additional magnet array may be mounted offset from the first magnet configuration to prepolarize a formation before it is measured in order to pre-align a larger number of protons than the single magnet configuration could do by itself. Additional features of the invention are disclosed which increase the Signal/Noise ratio of the measured data, and improve the quality and quantity of borehole NMR measurements, per unit of time spent. Disclosed interpretation methods determine fluid flow permeability and longitudinal relaxation time T.sub.1 -type parameters by directly comparing the measured decay signals (such as T.sub.2 and T.sub.2 * type decay) to a representation which responds to both the decay time t.sub.dec and the imposed polarization period prior to such decay, t.sub.pol. The parameters of amplitude and T.sub.1 are determined and combined with certain preferred methods to generate robust values of formation characteristics such as fluid flow permeability. Other related methods are disclosed.

15. 发明授权

US08941821B2 System and method for uniform and localized wall thickness measurement using fiber optic sensors 有权
标题翻译：使用光纤传感器进行均匀和局部壁厚测量的系统和方法
公开(公告)号：US08941821B2
公开(公告)日：2015-01-27
申请号：US13256633
申请日：2010-03-18
申请人： Peter Coupe , Damon Richard Roberts , Dmitry Belov , Evgeniya Myalo Deger , Masafumi Fukuhara , Yamid Pico , Rogerio Tadeu Ramos , Ian Peirce
发明人： Peter Coupe , Damon Richard Roberts , Dmitry Belov , Evgeniya Myalo Deger , Masafumi Fukuhara , Yamid Pico , Rogerio Tadeu Ramos , Ian Peirce
IPC分类号： G01B11/16 , G01B11/06 , G01B21/04 , G01D3/036 , G01D5/353 , G01L9/00
CPC分类号： G01B11/06 , G01B11/18 , G01B21/045 , G01D3/0365 , G01D5/35383 , G01L9/0032
摘要： A system and method are provided for determining wall thickness of a structure such as a metallic pressurized pipe. The system includes an optical fiber having a plurality of Fiber Bragg Gratings (FBGs), and a mounting for securing the FBGs over discrete portions of the exterior surface of the pipe such that strain in the pressurized pipe wall is transmitted to the FBGs. The system further includes a light source and a light sensor coupled to an end of the optical fiber. The light sensor converts light reflected back from the FBGs into electrical signals that a digital processor converts into strain measurements. The FBGs are mounted around portions of the pipe expected to have significant metal loss as well as portions of the pipe expected to have negligible metal loss. The method includes at least one of comparing relative strains at locations with negligible metal loss to those with significant metal loss to accurately determine the thickness of the wall with metal loss; compensating for temperature effects by considering relative strains at areas of the pipe with and without metal loss; and measuring axial strain on the pipe with one or more of the FBGs to correct for at least one of bending and torsion effects on hoop strain.
摘要翻译：提供了一种用于确定诸如金属加压管的结构的壁厚的系统和方法。该系统包括具有多个光纤布拉格光栅（FBG）的光纤，以及用于将FBG固定在管的外表面的离散部分上的安装件，使得加压管壁中的应变传递到FBG。该系统还包括耦合到光纤端部的光源和光传感器。光传感器将从FBG反射回来的光转换为数字处理器转换为应变测量的电信号。 FBG安装在预期具有显着金属损失的管道周围，并且管道的部分预期具有可忽略的金属损失。该方法包括将具有可忽略的金属损失的位置处的相对应变与具有显着金属损失的位置进行比较中的至少一个，以精确地确定具有金属损失的壁的厚度; 通过考虑在具有和不具有金属损失的管道的区域处的相对应变来补偿温度影响; 并用一个或多个FBG测量管道上的轴向应变，以校正环箍应变的弯曲和扭转效应中的至少一种。

16. 发明申请

US20060191683A1 Systems and methods of downhole thermal property measurement 有权
标题翻译：井下热性能测量的系统和方法
公开(公告)号：US20060191683A1
公开(公告)日：2006-08-31
申请号：US11346926
申请日：2006-02-03
申请人： Masafumi Fukuhara , Kasumi Fujii , Yoko Morikami
发明人： Masafumi Fukuhara , Kasumi Fujii , Yoko Morikami
IPC分类号： E21B47/00
CPC分类号： E21B47/065 , G01N25/18
摘要： Methods and systems of measuring in-situ time variant temperature for subsurface formations utilizing an active heating and/or cooling device and temperature sensors for purposes of characterizing hydrocarbon-bearing formations by deriving formation thermal properties.
摘要翻译：使用主动加热和/或冷却装置和温度传感器测量地下地层的原位时间变化温度的方法和系统，以通过导出地层热性质来表征含烃地层的目的。

17. 发明授权

US06205087B1 Sonic data logging system 有权
标题翻译：声波数据记录系统
公开(公告)号：US06205087B1
公开(公告)日：2001-03-20
申请号：US09117514
申请日：1998-11-16
申请人： Masafumi Fukuhara , Mauricio Tejada
发明人： Masafumi Fukuhara , Mauricio Tejada
IPC分类号： G01V100
CPC分类号： G01V1/48
摘要： A sonic logging method involves the pre-processing of a detection signal by a downhole processing device to determine the arrival time of a sonic signal at a receiver which is then transmitted to the surface. A suitable sonic logging downhole tool includes a control device for controlling generation and reception of the sonic signal, an A-D converter for digitizing the detected signal at a predetermined sampling interval, a first memory for storing the digitized waveform, a second memory for storing a program for processing the digitized waveform, and a microprocessor capable of executing the stored program so as to determine an arrival time of the sonic signal arriving at the receiver.
摘要翻译：声波测井方法涉及通过井下处理装置对检测信号进行预处理，以确定声波信号在接收器处的到达时间，然后传输到表面。合适的声波测井井下工具包括用于控制声音信号的产生和接收的控制装置，用于以预定采样间隔数字化检测信号的AD转换器，用于存储数字化波形的第一存储器，用于存储程序的第二存储器用于处理数字化波形，以及能够执行存储的程序的微处理器，以便确定到达接收机的声音信号的到达时间。

18. 发明授权

US6061633A Borehole logging system 有权
标题翻译：井眼测井系统
公开(公告)号：US6061633A
公开(公告)日：2000-05-09
申请号：US117344
申请日：1999-04-12
申请人： Masafumi Fukuhara , Takeaki Nakayama
发明人： Masafumi Fukuhara , Takeaki Nakayama
IPC分类号： G01V3/18 , G01V1/40 , G01V1/48 , G01V3/34 , G01V3/38 , G01V11/00 , G06F9/445 , H04Q9/00 , G01V1/00
CPC分类号： G01V11/00
摘要： For various reasons it may be desirable to change the way a sonde is programmed to behave and respond to the data it receives and operates on, and at present each time this must be done it has been necessary to lift the sonde out of the borehole and then disassemble it to permit the removal of the old ROM and its replacement with a new ROM storing the new program. The operability and efficiency of such an arrangement is poor. To deal with this, the present invention proposes that the sonde also includes: signal processing means for processing a sampled detection signal according to a predetermined signal processing program; first memory means for storing that signal processing program; and second memory means storing a writing program for writing the signal processing program in the first memory means according to a command from the ground surface processing apparatus. In this way the sonde's program can be updated from the surface simply by downloading the new program into it, and without the need to bring the sonde up to the surface.
摘要翻译： PCT No.PCT / IB97 / 00154 Sec。 371日期1999年4月12日 102（e）1999年4月12日PCT 1997年1月31日PCT PCT。公开号WO97 / 28466 日期1997年8月7日由于各种原因，可能希望改变探头被编程为对其接收和操作的数据进行行为和响应的方式，并且目前每次必须完成时，必须提起探头然后拆卸它，以便允许使用存储新程序的新ROM去除旧的ROM及其更换。这种安排的可操作性和效率差。为了解决这个问题，本发明提出，探头还包括：根据预定信号处理程序处理采样检测信号的信号处理装置; 用于存储该信号处理程序的第一存储装置; 以及第二存储装置，根据来自地面处理装置的命令，存储用于将信号处理程序写入第一存储装置的写入程序。通过这种方式，可以从表面更新探空仪的程序，只需将新程序下载到其中即可，而无需将探头带到表面。

19. 发明授权

US5153514A Antenna and wear plates for borehole logging apparatus 失效
标题翻译：井眼测井仪天线和耐磨板
公开(公告)号：US5153514A
公开(公告)日：1992-10-06
申请号：US657710
申请日：1991-02-19
申请人： Douglas D. Griffin , Robert L. Kleinberg , Abdurrahman Sezginer , Masafumi Fukuhara
发明人： Douglas D. Griffin , Robert L. Kleinberg , Abdurrahman Sezginer , Masafumi Fukuhara
IPC分类号： G01R33/34 , G01R33/44 , G01V3/32
CPC分类号： G01V3/32 , G01R33/34 , G01N24/081 , G01R33/3808
摘要： An apparatus is disclosed for investigating nuclear magnetic resonance properties of earth formations traversed by a borehole, including a logging device adapted for longitudinal movement in the borehole. The device includes a first subsystem for producing a static magnetic field in the formations and a second subsystem for transmitting electromagnetic energy into the formations and for detecting electromagnetic energy from the formations. The second subsystem comprises an antenna assembly which includes an open-ended shell formed of a magnetically permeable material. An open-ended electrically conductive body is disposed within the shell and is spaced therefrom. A medium whose acoustic impedance is substantially different than the acoustic impedance of the shell and the body is disposed between the shell and the body. An electrically conductive probe is disposed in the body, and an electrically insulating magnetically permeable loading material disposed in the body. The shell is formed of a material having a magnetic permeability that is high enough to render the magnetic reluctance of the loading material several times the magnetic reluctance of the shell. The body is formed of a metal having thickness that is at least several skin depths in said metal at the frequency of the electromagnetic energy and is less than the minimum thickness that would support an acoustic resonance mode in its thickness direction at the frequency of the electromagnetic energy. The apparatus provides a shunt path for the static magnetic field in the region of the antenna that would otherwise have a deleterious effect on the loading material of the antenna and on antenna operation. The apparatus also minimizes undesirable ringing of the antenna.
摘要翻译：公开了一种用于研究由钻孔穿过的地层的核磁共振特性的装置，包括适于在钻孔中纵向移动的测井装置。该装置包括用于在地层中产生静磁场的第一子系统和用于将电磁能量发射到地层中并用于检测来自地层的电磁能的第二子系统。第二子系统包括天线组件，天线组件包括由导磁材料形成的开放式外壳。开口导电体设置在壳体内并与壳体间隔开。其声阻抗基本上不同于壳体和主体的声阻抗的介质设置在壳体与本体之间。导电探针设置在体内，以及设置在体内的电绝缘的可渗透的负载材料。外壳由具有足够高的磁导率的材料形成，使得装载材料的磁阻几倍于壳的磁阻。主体由金属形成，其厚度在电磁能的频率处至少在所述金属中的几个深度深度，并且小于在电磁频率下支持其厚度方向的声共振模式的最小厚度能源。该装置为天线区域内的静态磁场提供分流路径，否则其将对天线的负载材料和天线操作产生有害影响。该装置还使不期望的天线振铃最小化。

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