公开(公告)号：US4805156A

公开(公告)日：1989-02-14

申请号：US910076

申请日：1986-09-22

申请人： George Attali ,  James R. Birchak ,  Robert A. Lester

发明人： George Attali ,  James R. Birchak ,  Robert A. Lester

IPC分类号： E21B47/00 ,  G01V1/44 ,  G01V1/00

CPC分类号： E21B47/0005 ,  G01V1/44 ,  G01N2291/015 ,  G01N2291/0231 ,  G01N2291/0422 ,  G01N2291/103 ,  G01N2291/2636

摘要： The present invention is directed to an apparatus and method for obtaining azimuthally dependent measurements for evaluating the casing cement bond quality and, more particularly, for detecting and specifically locating channels or fissures between the casing and cement. The quality of the bond behind one or more arcs of known location on the casing is determinable by the present invention. The apparatus and method of the present invention employ a plurality of sonic transducers disposed in near contact with the casing in defined segmented locations about or around the exterior surface of a downhole tool. The transducers are arranged in a plurality of arrays, each array comprising four transducers, two transmitting and two receiving transducers, disposed along a single arc about or around the exterior of the tool. The transducers are arranged so that two adjacent transducers in each array perform the same function in the array so that the bond quality between the similarly functioning and adjacent transducers is determined. The sets of arrays of transducers provide determinations in a continuous and complete loop around the casing. The casing cement bond quality is determined by measuring the attenuation of the compression wave from a pulsed acoustic wave traveling along the arcs of the helices. The apparatus and method of the present invention are also useful for making azimuthally dependent measurements in hard formations to detect fractures in uncased boreholes. When detecting fractures, the attenuation of the shear wave rather than the compression wave is measured.

摘要翻译： 本发明涉及一种用于获得用于评估套管水泥粘合质量的方位依赖性测量的装置和方法，更具体地，涉及用于检测和具体定位壳体和水泥之间的通道或裂缝。 通过本发明可以确定壳体上已知位置的一个或多个弧之后的粘合质量。 本发明的装置和方法采用多个声音换能器，它们围绕或围绕井下工具的外表面在限定的分段位置处与壳体近接触地设置。 传感器布置成多个阵列，每个阵列包括四个换能器，两个发射和两个接收换能器，沿着工具的外部或周围沿着单个弧设置。 换能器被布置成使得每个阵列中的两个相邻换能器在阵列中执行相同的功能，使得确定相似功能和相邻换能器之间的接合质量。 传感器阵列组在壳体周围的连续且完整的环路中提供了测量。 通过测量沿着螺旋弧线传播的脉冲声波的压缩波的衰减来确定套管水泥粘合质量。 本发明的装置和方法还可用于在硬地层中进行方位依赖性测量以检测未经钻井的裂缝。 当检测到裂缝时，测量剪切波而不是压缩波的衰减。

公开(公告)号：US07028213B2

公开(公告)日：2006-04-11

申请号：US09965883

申请日：2001-09-28

申请人： Tim Majni ,  Gary J. Piccirillo ,  John M. MacLaren ,  Robert A. Lester ,  John E. Larson ,  Jerome J. Johnson ,  Benjamin H. Clark ,  Patrick L. Ferguson ,  Siamak Tavallaei ,  Jeffrey S. Autor ,  Christian H. Post ,  Dan Fink ,  Jeffery Galloway ,  Bret D. Roscoe

发明人： Tim Majni ,  Gary J. Piccirillo ,  John M. MacLaren ,  Robert A. Lester ,  John E. Larson ,  Jerome J. Johnson ,  Benjamin H. Clark ,  Patrick L. Ferguson ,  Siamak Tavallaei ,  Jeffrey S. Autor ,  Christian H. Post ,  Dan Fink ,  Jeffery Galloway ,  Bret D. Roscoe

IPC分类号： G06F11/00

CPC分类号： G06F11/328 ,  G06F11/108 ,  G06F11/1092 ,  G06F2211/1052

摘要： A computer system includes a plurality of memory modules that contain semiconductor memory, such as DIMMs. The system includes a host/data controller that utilizes an XOR engine to store data and parity information in a striped fashion on the plurality of memory modules to create a redundant array of industry standard DIMMs (RAID). The host/data controller also interleaves data on a plurality of channels associated with each of the plurality of memory modules. The system implements error interrupt control, ECC error reporting, cartridge error power down procedures in response to command errors, storage of error information in unused segments of each DIMM, hot-pug procedure indicator and remote tagging capabilities of memory cartridges and DIMMs.

公开(公告)号：US06249847B1

公开(公告)日：2001-06-19

申请号：US09134057

申请日：1998-08-14

申请人： Kenneth T. Chin ,  Phillip M. Jones ,  Robert A. Lester ,  Gary J. Piccirillo ,  Michael J. Collins

发明人： Kenneth T. Chin ,  Phillip M. Jones ,  Robert A. Lester ,  Gary J. Piccirillo ,  Michael J. Collins

IPC分类号： G06F1378

CPC分类号： G06F13/18

摘要： A computer system that includes a CPU, a memory and a memory controller for controlling access to the memory. The memory controller generally includes arbitration logic for deciding which memory request among one or more pending requests should win arbitration. When a request wins arbitration, the arbitration logic asserts a “won” signal corresponding to that memory request. The memory controller also includes synchronizing logic to synchronize memory requests, corresponding to a first group of requests, that win arbitration to a clock signal and an arbitration enable signal. The synchronizing logic includes an AND gate and a latch for synchronizing the won signals. The memory controller also asynchronously arbitrates a second group of memory requests by asserting a won signal associated with the second group requests that is not synchronized to the clock signal. In this manner, the won signals for the second group of requests can be asserted earlier than the synchronized won signals, thereby permitting the asynchronously arbitrated second group memory requests to be performed earlier than otherwise possible.

摘要翻译： 一种包括CPU，存储器和用于控制对存储器的访问的存储器控​​制器的计算机系统。 存储器控制器通常包括仲裁逻辑，用于决定一个或多个待处理请求中哪个存储器请求应该赢得仲裁。 当请求赢得仲裁时，仲裁逻辑确定与该存储器请求对应的“赢”信号。 存储器控制器还包括同步逻辑，以将与第一组请求相对应的存储器请求同步到仲裁到时钟信号和仲裁使能信号。 同步逻辑包括与门和用于使获胜信号同步的锁存器。 存储器控制器还通过断言与不与时钟信号同步的第二组请求相关联的获胜信号来异步地仲裁第二组存储器请求。 以这种方式，第二组请求的获胜信号可以早于同步的获胜信号被断言，从而允许异步仲裁的第二组存储器请求比其他可能的更早执行。

公开(公告)号：US5774680A

公开(公告)日：1998-06-30

申请号：US570394

申请日：1995-12-11

申请人： Christopher C. Wanner ,  Jeffrey C. Stevens ,  Robert A. Lester ,  Dwight D. Riley ,  David J. Maguire ,  James Edwards

发明人： Christopher C. Wanner ,  Jeffrey C. Stevens ,  Robert A. Lester ,  Dwight D. Riley ,  David J. Maguire ,  James Edwards

IPC分类号： G06F13/12 ,  G06F13/28 ,  G06F13/00

CPC分类号： G06F13/28 ,  G06F13/126

摘要： A computer system having separate, yet compatible DMA controllers on a bus. Each DMA controller for controlling at least one DMA channel, each DMA controller having an independent set of registers for performing DMA operations and a configuration register for indicating channel status and designation. A DMA master for compatibly communicating with a processor and for initializing and communicating with the multiple DMA controllers.

公开(公告)号：US5731550A

公开(公告)日：1998-03-24

申请号：US813922

申请日：1997-03-07

申请人： Robert A. Lester ,  Paul Junghans

发明人： Robert A. Lester ,  Paul Junghans

IPC分类号： B06B1/06 ,  G01V1/52 ,  G01V1/40

CPC分类号： B06B1/0603 ,  G01V1/523 ,  Y10S367/911

摘要： A dipole acoustic well logging instrument including an acoustic transmitter. Receiver sections are disposed at axially spaced apart locations from the acoustic transmitter. Each receiver section includes an outer shoulder at each end adapted to be placed in acoustically isolated contact with an internal shoulder of a connector coupling when the instrument is in tension. The outer shoulders have an acoustically isolating material disposed on their surfaces. The receiver sections include an inner shoulder at each end adapted to be placed in direct contact with an external shoulder of the connector coupling when the instrument is in compression. The instrument includes one connector couplings disposed at each end of each receiver section to couple the receiver sections to each other and to the remainder of the instrument. At least one receiver element is disposed in a passage formed into each of the receiver sections. In one embodiment of the invention, the receiver element can be a bimorph-type dipole acoustic sensor. In another embodiment, the receiver element can be formed from a plurality of radially spaced apart piezoelectric elements.

摘要翻译： 包括声发射器的偶极声测井仪器。 接收器部分设置在离声发射器的轴向间隔开的位置处。 每个接收器部分包括在每个端部处的外肩部，其适于在器械处于张力时与连接器联接器的内部肩部放置在声隔离接触中。 外肩部具有设置在其表面上的隔音材料。 接收器部分包括在每个端部处的内肩部，其适于在仪器处于压缩状态时与连接器联接器的外肩部直接接触。 仪器包括设置在每个接收器部分的每个端部处的一个连接器联接器，以将接收器部分彼此连接并连接到仪器的其余部分。 至少一个接收器元件设置在形成每个接收器部分的通道中。 在本发明的一个实施例中，接收器元件可以是双压电晶片型偶极子声学传感器。 在另一个实施例中，接收器元件可以由多个径向隔开的压电元件形成。

公开(公告)号：US4893285A

公开(公告)日：1990-01-09

申请号：US195443

申请日：1988-05-12

申请人： Jean P. H. R. M. Masson ,  Lee H. Gollwitzer ,  Robert A. Lester

发明人： Jean P. H. R. M. Masson ,  Lee H. Gollwitzer ,  Robert A. Lester

IPC分类号： E21B47/00 ,  G01V1/44

CPC分类号： E21B47/0005 ,  G01V1/44

摘要： In accordance with principles of the present invention methods and apparatus are provided for evaluating the quality of the cement bond in cased boreholes. Acoustic energy is used to excite the borehole-casing-annulus-formation system and the quality of the cement bond is determined by examining the ratios of the signals received by two longitudinally spaced apart receivers supported on a sonde. The acoustic energy is generated by two transmitters symmetrically disposed above and below the receivers along the sonde. The spacings between the receivers themselves and between the receivers and the transmitters are selected so as to enhance the correlation between the ratios of the received signals and the quality of the cement bond log. An additional receiver, supported on the sonde at a small distance from one of the transmitters, is employed to determine the quality of the cement bond in hard formations.

摘要翻译： 根据本发明的原理，提供了用于评估套管钻孔中的水泥粘合剂的质量的方法和装置。 声能被用于激发钻孔套管 - 环空形成系统，并且通过检查由主体上支撑的两个纵向间隔开的接收器接收的信号的比率来确定水泥接合质量。 声能由对称设置在探头的接收器上方和下方的两个发射器产生。 选择接收器本身之间以及接收器和发射器之间的间隔，以便增强接收信号的比率与水泥结合记录的质量之间的相关性。 使用一个额外的接收器，在距离其中一个发射器的距离较小的位置上在主探头上支撑，用于确定硬地层中水泥粘结的质量。

公开(公告)号：US4757479A

公开(公告)日：1988-07-12

申请号：US394395

申请日：1982-07-01

申请人： Jean-Pierre H.R.M. Masson ,  Lee H. Gollwitzer ,  Robert A. Lester

发明人： Jean-Pierre H.R.M. Masson ,  Lee H. Gollwitzer ,  Robert A. Lester

IPC分类号： E21B47/00 ,  G01V1/44 ,  G01V1/40

CPC分类号： E21B47/0005 ,  G01V1/44

摘要： In accordance with principles of the present invention methods and apparatus are provided for evaluating the quality of the cement bond in cased boreholes. Acoustic energy is used to excite the borehole-casing-annulus-formation system and the quality of the cement bond is determined by examining the ratios of the signals received by two longitudinally spaced apart receivers supported on a sonde. The acoustic energy is generated by two transmitters symmetrically disposed above and below the receivers along the sonde. The spacings between the receivers themselves and between the receivers and the transmitters are selected so as to enhance the correlation between the ratios of the received signals and the quality of the cement bond log. An additional receiver, supported on the sonde at a small distance from one of the transmitters, is employed to determine the quality of the cement bond in hard formations.

摘要翻译： 根据本发明的原理，提供了用于评估套管钻孔中的水泥粘合剂的质量的方法和装置。 声能被用于激发钻孔套管 - 环空形成系统，并且通过检查由主体上支撑的两个纵向间隔开的接收器接收的信号的比率来确定水泥接合质量。 声能由对称设置在探头的接收器上方和下方的两个发射器产生。 选择接收器本身之间以及接收器和发射器之间的间隔，以便增强接收信号的比率与水泥结合记录的质量之间的相关性。 使用一个额外的接收器，在距离其中一个发射器的距离较小的位置上在主探头上支撑，用于确定硬地层中水泥粘结的质量。

公开(公告)号：US07120758B2

公开(公告)日：2006-10-10

申请号：US10365018

申请日：2003-02-12

申请人： Phillip M. Jones ,  Robert A. Lester ,  Jens K. Ramsey ,  William J. Walker ,  John E. Larson ,  James Andre ,  Paul Rawlins

发明人： Phillip M. Jones ,  Robert A. Lester ,  Jens K. Ramsey ,  William J. Walker ,  John E. Larson ,  James Andre ,  Paul Rawlins

IPC分类号： G06F12/00 ,  G06F3/00

CPC分类号： G06F13/1673

摘要： Method and apparatus for improving processor performance. In some embodiments, processing speed may be improved by reusing data stored in a buffer during an initial request by subsequent requests. Assignment of temporary storage buffers in a controller may be made to allow for the potential for reuse of the data. Further, a hot buffer may be designated to allow for reuse of the data stored in the hot buffer. On subsequent requests, data stored in the hot buffer may be sent to a requesting device without re-retrieving the data from memory.

摘要翻译： 提高处理器性能的方法和装置。 在一些实施例中，可以通过在初始请求期间通过后续请求重用存储在缓冲器中的数据来改善处理速度。 控制器中的临时存储缓冲区的分配可以做出以允许数据重用的潜力。 此外，可以指定热缓冲器以允许重新使用存储在热缓冲器中的数据。 在随后的请求中，存储在热缓冲器中的数据可以被发送到请求设备而不从存储器重新检索数据。

公开(公告)号：US06854070B2

公开(公告)日：2005-02-08

申请号：US09769978

申请日：2001-01-25

申请人： Jerome J. Johnson ,  John M. MacLaren ,  Robert A. Lester ,  John E. Larson ,  Gary J. Piccirillo ,  Christian H. Post ,  Jeffery Galloway ,  Ho M. Lai ,  Anisha Anand ,  Eric Rose

发明人： Jerome J. Johnson ,  John M. MacLaren ,  Robert A. Lester ,  John E. Larson ,  Gary J. Piccirillo ,  Christian H. Post ,  Jeffery Galloway ,  Ho M. Lai ,  Anisha Anand ,  Eric Rose

IPC分类号： G06F11/10 ,  G06F11/00

CPC分类号： G06F11/108

摘要： A method of adding memory capacity to a computer system. The computer system comprises a redundant memory system including a plurality of memory cartridges. By powering-down a memory cartridge, adding an additional memory module to the memory cartridge, and powering-up the memory cartridge for each memory cartridge in the system, the system can transition from a redundant mode of operation to a non-redundant mode of operation for each power-down, thus allowing the computer system to remain functional during the addition of the memory module. Alternatively, memory cartridges with higher memory capacity than those currently present in the computer system can be used to replace existing memory cartridges in the computer system, using the same techniques.

摘要翻译： 一种向计算机系统增加内存容量的方法。 计算机系统包括包括多个存储器盒的冗余存储器系统。 通过关闭存储卡，将额外的内存模块添加到内存盒，并为系统中的每个内存盒启动内存盒，系统可以从冗余操作模式转换到非冗余模式 操作每个掉电，从而允许计算机系统在添加存储器模块期间保持功能。 或者，可以使用具有比当前存在于计算机系统中的存储器容量更高的存储器盒来替代计算机系统中的现有存储器盒，使用相同的技术。

公开(公告)号：US06640282B2

公开(公告)日：2003-10-28

申请号：US09769716

申请日：2001-01-25

申请人： John M. MacLaren ,  Jerome J. Johnson ,  Robert A. Lester ,  Gary J. Piccirillo ,  John E. Larson ,  Christian H. Post ,  Jeffery Galloway ,  Ho M. Lai ,  Eric Rose

发明人： John M. MacLaren ,  Jerome J. Johnson ,  Robert A. Lester ,  Gary J. Piccirillo ,  John E. Larson ,  Christian H. Post ,  Jeffery Galloway ,  Ho M. Lai ,  Eric Rose

IPC分类号： G06F1216

CPC分类号： G06F13/4081 ,  G06F3/0601 ,  G06F2003/0694

摘要： The control logic for a hot-pluggable memory cartridge for use in a redundant memory system. To implement a hot-pluggable memory cartridge in a redundant memory system, control logic to control the sequence of events for powering-up and powering-down a memory cartridge is provided.