公开(公告)号：US20200003047A1

公开(公告)日：2020-01-02

申请号：US16019731

申请日：2018-06-27

申请人： Jianying Chu

发明人： Jianying Chu

IPC分类号： E21B47/12 ,  E21B47/18 ,  H04L12/40

摘要： A system for remediating a bus sectioning events, such as a bus failure or controlled sectioning, comprises a plurality of nodes coupled together by a bus in a tool string used in a bottom hole assembly (BHA). Each node comprises a bus switch configured to isolate the node from a section of the bus. Upon a bus sectioning event, a first sub-tool string and a second sub-tool string are created on either side of the bus section to be isolated, each of which independently operate in parallel. Communication between the first and second sub-tool buses is established through respective nodes connected to each sub-tool bus that comprise a wireless communication transceiver configured to convey signals along the tool string. Alternatively or additionally, each of the sub-tool buses has a node with telemetry for communicating with the surface. Accordingly, each of the sub-tool busses continues independently operating normally.

公开(公告)号：US10273795B1

公开(公告)日：2019-04-30

申请号：US15902328

申请日：2018-02-22

申请人： Jianying Chu

发明人： Jianying Chu

IPC分类号： E21B44/00 ,  H04L12/24 ,  H04L29/14

摘要： An intelligent tool bus network for a bottom hole assembly (BHA) that can enumerate the nodes on the bus to build a tool string layout map. During the enumeration, an enumeration master node (EMN) sequentially powers and tests additional sections of the bus and additional tool electronics. At each node, the EMN records the results of the tests in an enumeration log. For each good node, communication is established with the EMN to retrieve a node ID and node metadata. Using the enumeration log, the EMN builds a tool string layout map that includes information of each node, their relative location, and their operating status. The intelligent tool bus network also facilitates sectioning a bus into a plurality of sub-busses upon a sectioning event and rejoining the sub-busses. The sectioning event occurs as a result of a fault on the bus or a planned section division multiplexing event.

公开(公告)号：US20190249543A1

公开(公告)日：2019-08-15

申请号：US15893225

申请日：2018-02-09

申请人： Jianying Chu

发明人： Jianying Chu

IPC分类号： E21B47/12 ,  G05B23/02 ,  E21B47/00 ,  H02H1/00 ,  H02H3/10

CPC分类号： E21B47/12 ,  E21B17/003 ,  E21B47/00 ,  G05B23/0208 ,  G05B2219/25004 ,  H02H1/0007 ,  H02H1/0092 ,  H02H3/105 ,  H04L12/40013

摘要： A reconfigurable network for interconnecting tools in a bottom hole assembly is disclosed. The network includes nodes that have reconfigurable switches that can be configured to provide a conductive path for the bus through the node, connect a terminator to the bus, and/or connect a tool to the bus. The exact configuration (i.e., states) of the switches in each node may be automatically selected based on a detected fault in a tool attached to a node and/or the state of other switches in the node or/a specific request is received. Various node embodiments and a method and circuit for automatically disconnecting a tool from the network in response to a tool fault are further disclosed.

公开(公告)号：US20190360278A1

公开(公告)日：2019-11-28

申请号：US16538227

申请日：2019-08-12

申请人： Jianying Chu

发明人： Jianying Chu

IPC分类号： E21B17/02 ,  G05B17/02

摘要： An interface module has an outward interface with at least two ports for directly connecting to separate sections of a tool bus. The outward interface may have two uplink ports and one downlink port for layered tool bus applications. Each port has two electrical contacts for creating an electrical path between electronic assemblies with combined power & data transmission (CPDT) using a transmission line. A power port is connectable to an external power source via a common electrical path. A standardized inward interface of the interface module provides data and communication contact groups for data and power communication with assembly electronics. The interface module is implemented using advanced electronics packaging technology for easy installation on a printed circuit board. The interface module facilitates a streamlined downhole electronic testing configuration for testing electronics as they are developed prior to completion of development of dependent components.

公开(公告)号：US20190271222A1

公开(公告)日：2019-09-05

申请号：US16353243

申请日：2019-03-14

申请人： Jianying Chu

发明人： Jianying Chu

IPC分类号： E21B44/00 ,  H04L12/24

摘要： An intelligent tool bus network for a bottom hole assembly (BHA) that can enumerate the nodes on the bus to build a tool string layout map. During the enumeration, an enumeration master node (EMN) sequentially powers and tests additional sections of the bus and additional tool electronics. At each node, the EMN records the results of the tests in an enumeration log. For each good node, communication is established with the EMN to retrieve a node ID and node metadata. Using the enumeration log, the EMN builds a tool string layout map that includes information of each node, their relative location, and their operating status. The intelligent tool bus network also facilitates sectioning a bus into a plurality of sub-busses upon a sectioning event and rejoining the sub-busses. The sectioning event occurs as a result of a fault on the bus or a planned section division multiplexing event.

公开(公告)号：US10090624B1

公开(公告)日：2018-10-02

申请号：US15861380

申请日：2018-01-03

申请人： Jianying Chu

发明人： Jianying Chu

IPC分类号： E21B17/02 ,  H01R13/66 ,  H02G9/06 ,  H01R101/00

摘要： A tool bus spans multiple segments of a bottom hole assembly (BHA) is implemented as a transmission line with only a single electrical contact (SEC) across joints of adjacent segments. A common mode (CM) choke on the transmission line promotes return currents to pass through the transmission line as opposed to through parallel return paths and stabilizes the characteristic impedance on the transmission line. The tool bus uses a two-layer bus with a first layer that is used to communicate across segments and a second layer that is used to communicated among nodes within one segment. A primary node is used to link the primary bus and the secondary bus. A CM choke may be used at the connection between the primary node and the primary bus, at the connection between the primary node and the secondary bus, and/or at the connection between the secondary bus and a secondary node.