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公开(公告)号：US10087748B2
公开(公告)日：2018-10-02
申请号：US14569768
申请日：2014-12-14
摘要： A method, apparatus and system for safe mode telemetry are provide. The method may include detecting a failure of an AC power supply, switching the AC power supply to a DC power supply, booting with a safe mode telemetry system by a control unit, and capturing downhole data for recording into a memory. The apparatus may include a telemetry cartridge, a control unit to detect a failure of an AC power supply, a DC power supply, and a switching device to change from the AC power supply to the DC power supply based on the control unit's detection of the failure in the AC power supply. The DC power supply of the apparatus may be used to power the telemetry cartridge after the detection of the failure. The system may further include a surface data acquisition unit and a downhole tool including the apparatus.
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2.发明申请公开(公告)号：US20190229767A1
公开(公告)日：2019-07-25
申请号：US16371849
申请日：2019-04-01
发明人： Alex Olson , Nalin Weerasinghe , Kun Wang , Milos Milosevic
CPC分类号： H04B3/32 , G01V11/002 , H04B3/23
摘要： Methods and systems for multiple carrier frequency, half duplex cable telemetry for a wellsite. The methods involve generating a first type of bi-directional message in a first propagation mode, generating a second type of bi-directional message in the first propagation mode and in a second propagation mode, transmitting over a cable operatively coupling a surface modem and a downhole modem the first and second types of bi-directional message sequentially in a plurality of time periods across a single frequency bandwidth, and separating each of the first and second types of bi-directional message from a most subsequently transmitted one of the first and second types of bi-directional message by a quiet time sample during which no message is transmitted.
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公开(公告)号：US09535185B2
公开(公告)日：2017-01-03
申请号：US13705124
申请日：2012-12-04
发明人： Alex Olson , Nalin Weerasinghe , Milos Milosevic , Kun Wang , Motohiro Nakanouchi , Kenji Endo , Yuichi Kobayashi , Hiromasa Nishisaka
摘要： Methods and systems for failure point diagnostics in cable telemetry at a wellsite. The methods involve providing a system includes a cable operatively coupling between a surface modem and a downhole modem that is operatively coupled to a downhole toolstring of one or more downhole tools via a toolbus. The methods further involve generating a plurality of test signals, sequentially applying the test signals across one or more test loops in the cable telemetry system, and generating a failure point alert when at least one of the test signals fails in at least one of the test loops. The failure point alert identifies which component of the cable telemetry system caused the test signal to fail.
摘要翻译： 井场电缆遥测中故障点诊断的方法和系统。 所述方法涉及提供一种系统，其包括可操作地耦合在表面调制解调器和井下调制解调器之间的电缆，其通过工具总线可操作地联接到一个或多个井下工具的井下工具串。 所述方法还包括产生多个测试信号，顺序地将测试信号跨越电缆遥测系统中的一个或多个测试环路，并且当至少一个测试信号在至少一个测试中失败时产生故障点警报 循环。 故障点警报标识电缆遥测系统的哪个组件导致测试信号失败。
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公开(公告)号：US20150167451A1
公开(公告)日：2015-06-18
申请号：US14569768
申请日：2014-12-14
IPC分类号： E21B47/12
摘要： A method, apparatus and system for safe mode telemetry are provide. The method may include detecting a failure of an AC power supply, switching the AC power supply to a DC power supply, booting with a safe mode telemetry system by a control unit, and capturing downhole data for recording into a memory. The apparatus may include a telemetry cartridge, a control unit to detect a failure of an AC power supply, a DC power supply, and a switching device to change from the AC power supply to the DC power supply based on the control unit's detection of the failure in the AC power supply. The DC power supply of the apparatus may be used to power the telemetry cartridge after the detection of the failure. The system may further include a surface data acquisition unit and a downhole tool including the apparatus.
摘要翻译： 提供了一种用于安全模式遥测的方法，装置和系统。 该方法可以包括检测交流电源的故障，将交流电源切换到直流电源，由控制单元用安全模式遥测系统引导，以及捕获用于记录到存储器中的井下数据。 该装置可以包括遥测盒，控制单元，用于检测交流电源的故障，直流电源和开关装置，以根据控制单元的检测从交流电源切换到直流电源 交流电源故障。 设备的直流电源可以用于在检测到故障之后为遥测盒提供电力。 该系统还可以包括表面数据获取单元和包括该装置的井下工具。
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公开(公告)号：US11788359B2
公开(公告)日：2023-10-17
申请号：US17473340
申请日：2021-09-13
发明人： Jonathan D. Marshall , Edward George Parkin , Geoffrey Charles Downton , David C. Hoyle , Nalin Weerasinghe , Dennis Patrick Chesnutt
IPC分类号： E21B7/06 , E21B23/00 , E21B34/16 , E21B47/024 , E21B4/00
CPC分类号： E21B7/062 , E21B23/006 , E21B34/16 , E21B47/024 , E21B4/003
摘要： A downhole steering system includes a substantially tubular housing, a shaft positioned within the substantially tubular housing, a first bearing and a second bearing, the first and second bearings being configured to support rotation of the shaft relative to the housing. The first bearing, the second bearing, the shaft, and the housing at least partially define a chamber therebetween. The system also includes at least one structure positioned axially between the first and second bearing and being configured to extend from an exterior of the housing in response to pressure communicated to the chamber.
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公开(公告)号：US20140354446A1
公开(公告)日：2014-12-04
申请号：US14367937
申请日：2012-12-19
申请人： Schlumberger Technology Corporation , Services Petroliers Schlumberger , Schlumberger Holdings Limited
发明人： Takeaki Nakayama , Yuichi Kobayashi , Kun Wang , Nalin Weerasinghe , Milos Milosevic , David Santoso , Yasumasa Fujisawa , Thi Huong Lien Nguyen , Tsubasa Tanaka
IPC分类号： E21B47/12
摘要： Cable telemetry synchronization systems and methods. The synchronization can involve positioning downhole equipment into a wellbore via a cable operatively coupled to a surface module that can include a telemetry system master clock. The downhole equipment can include a toolbus master node and at least one slave node module having a node clock operatively coupled to the toolbus master node. The synchronization can also involve sending a frame start command to the at least one slave node module from the toolbus master node at predetermined intervals, receiving a clock value from each of the at least one slave node module, calculating a clock offset for each of the at least one slave node module, and sending an absolute clock value and the calculated clock offset for each of the at least one slave node module via a downlink synchronization command to the at least one slave node module.
摘要翻译： 电缆遥测同步系统和方法。 同步可以包括通过可操作地耦合到可包括遥测系统主时钟的表面模块的电缆将井下设备定位到井筒中。 井下设备可以包括工具总线主节点和具有可操作地耦合到工具总线主节点的节点时钟的至少一个从节点模块。 同步还可以包括以预定间隔从工具总线主节点向至少一个从节点模块发送帧起始命令，从至少一个从节点模块中的每一个接收时钟值，计算每个从节点模块的时钟偏移量 至少一个从节点模块，并且经由下行链路同步命令向所述至少一个从节点模块发送绝对时钟值和所计算的所述至少一个从节点模块中的每一个的时钟偏移。
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7.发明申请Wellsite System and Method for Multiple Carrier Frequency, Half Duplex Cable Telemetry 审中-公开多载波频率的井场系统和方法，半双工电缆遥测公开(公告)号：US20140152459A1
公开(公告)日：2014-06-05
申请号：US13705130
申请日：2012-12-04
发明人： Alex Olson , Nalin Weerasinghe , Kun Wang , Milos Milosevic
IPC分类号： G01V3/18
CPC分类号： H04B3/32 , G01V11/002 , H04B3/23
摘要： Methods and systems for multiple carrier frequency, half duplex cable telemetry for a wellsite. The methods involve generating a first type of bi-directional message in a first propagation mode, generating a second type of bi-directional message in the first propagation mode and in a second propagation mode, transmitting over a cable operatively coupling a surface modem and a downhole modem the first and second types of bi-directional message sequentially in a plurality of time periods across a single frequency bandwidth, and separating each of the first and second types of bi-directional message from a most subsequently transmitted one of the first and second types of bi-directional message by a quiet time sample during which no message is transmitted.
摘要翻译： 多载波频率，半双工电缆遥测方法和系统。 所述方法涉及以第一传播模式生成第一类型的双向消息，在第一传播模式和第二传播模式中产生第二类型的双向消息，通过电缆传输，可操作地耦合表面调制解调器和 在单个频率带宽的多个时间段内顺序地对第一和第二类型的双向消息进行井下调制，并且将第一和第二类型的双向消息中的每一个与第一和第二类型的双向消息中的最后发送的一个 通过安静时间采样的双向消息类型，在此期间不发送消息。
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公开(公告)号：US20220316288A1
公开(公告)日：2022-10-06
申请号：US17594971
申请日：2020-05-05
发明人： Eric Johnson , Phillip Bailey , Daniel Nobre , Nalin Weerasinghe
摘要： A drilling assembly includes a hydraulic amplifier assembly, a driver, a bearing housing, and a shaft. The hydraulic amplifier assembly is configured to increase a pressure of a drilling fluid so as to produce a pressurized drilling fluid. The driver is driven by the pressure of the drilling fluid and is configured to rotate a drill bit. The bearing housing is coupled to the driver. The shaft extends through the bearing housing and is configured to be coupled to the drill bit. The shaft is driven to rotate by the driver. The hydraulic amplifier is configured to deliver the pressurized drilling fluid to the drill bit.
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公开(公告)号：US20160018245A1
公开(公告)日：2016-01-21
申请号：US14799586
申请日：2015-07-15
发明人： Tsutomu Yamate , Kamal Kader , Soon Seong Chee , Toru Ikegami , Masafumi Fukuhara , Nalin Weerasinghe
CPC分类号： G01V8/00 , G01D5/35316 , G01D5/35354 , G01D5/35358 , G01D5/3538 , G01H9/004 , G01V1/164 , G01V1/184 , G01V1/208 , G01V1/226 , G02B6/02042
摘要： A system receives data corresponding to light signals in the plurality of cores, the plurality of cores including a first pair of cores spaced apart laterally along a first direction in the optical fiber, and a second pair of cores spaced apart laterally along a second direction in the optical fiber. The system determines a directional measurement of a dynamic parameter based on the data corresponding to light signals in the plurality of cores, wherein directionality of the directional measurement is indicated by a difference between a response of the first pair of cores to a stimulus and a response of the second pair of cores to the stimulus.
摘要翻译： 系统接收对应于多个核心中的光信号的数据，所述多个核心包括沿着光纤中的第一方向横向间隔开的第一对核心，以及沿第二方向横向间隔开的第二对核心 光纤。 该系统基于与多个核心中的光信号对应的数据来确定动态参数的方向测量，其中方向测量的方向性由第一对核心对刺激的响应和响应之间的差异指示 的第二对核心的刺激。
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公开(公告)号：US20140292530A1
公开(公告)日：2014-10-02
申请号：US13851971
申请日：2013-03-28
IPC分类号： E21B47/12
CPC分类号： E21B47/122 , E21B47/12 , G02B6/3817
摘要： Systems, apparatuses, and methods for hybrid cable telemetry. The methods can include positioning a toolstring in a wellbore. The toolstring can include an uphole telemetry cartridge and a downhole telemetry cartridge respectively adapted to send and receive telemetry data. The toolstring can also include a hybrid logging cable having optical fibers and copper conductors that can operatively couple the uphole telemetry cartridge to the downhole telemetry cartridge. The method can also include transferring data between the uphole telemetry cartridge and the downhole telemetry cartridge across the optical fibers and the copper conductors. The method can further include measuring a data transmission rate on the optical fibers and the copper conductors. The method can also include comparing the data transmission rate to a predetermined threshold. The method can further include detecting a data transmission failure when the data transmission rate falls below the predetermined threshold.
摘要翻译： 混合电缆遥测的系统，装置和方法。 这些方法可以包括将工具串定位在井眼中。 工具串可以包括分别适于发送和接收遥测数据的井上遥测盒和井下遥测盒。 工具串还可以包括具有光纤和铜导体的混合测井电缆，其可操作地将井上遥测盒连接到井下遥测盒。 该方法还可以包括通过光纤和铜导体在井上遥测盒和井下遥测盒之间传送数据。 该方法还可以包括测量光纤和铜导体上的数据传输速率。 该方法还可以包括将数据传输速率与预定阈值进行比较。 该方法还可以包括当数据传输速率低于预定阈值时检测数据传输故障。
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