228 results about "Multi cluster" patented technology

An articulating joint comprising a multi-cluster joint where every consecutive pair of links is interfaced by a gimbal, which offers rotation about two orthogonal axes within the same plane. Thus, the articulating joint comprises an alternating sequence of links and gimbals. Furthermore, there may be multiple cables attached to one or more of the links. As these cables are selectively pulled and released, one can achieve any desired articulation of the articulating joint. There may be a transmission member extending through the links and gimbals, parallel to the central longitudinal axis of the joint in its nominal non-articulated condition. This transmission member may be either a tension member that is pulled on (e.g. a cable or flexible pull rod) and that loads the articulating joint in compression, or the transmission member may be a flexible push rod that loads the articulating joint in tension.

A cluster tree network formed by self-organization of a number of nodes. The method of self-organization includes processes for cluster formation, cluster network maintenance, intra-cluster communication. In the cluster formation process, each node discovers if any neighboring node is a cluster head or if any node is already a member of a cluster (thus making it a networked node), and if a cluster head or a networked node is discovered, each node establishes a communication link with the cluster head or the networked node. If no cluster head or networked node is discovered, the node itself becomes a cluster head. The network is maintained by each node periodically broadcasting a HELLO message to neighboring nodes, receiving responses to the HELLO message and updating a neighbor list in accordance with responses to the HELLO message. Multi-cluster networks are also provided using the processes of inter-cluster network formation, inter-cluster network maintenance, and inter-cluster communication. The resulting network has one or more clusters of nodes, each with a cluster head and a number of member nodes, each assigned a node identifier by the cluster head. In a multi-cluster network, a designated device assigns identifies to each cluster head in the network. Border nodes, which are members of at least two clusters, act as routers connecting the clusters and relaying information packets between the clusters.

A method and apparatus for analyzing schedules for multi-cluster tools that are used in semiconductor wafer processing and similar manufacturing applications. The method and apparatus comprise a schedule analyzer and a pass-through chamber manager. The apparatus allows the user to analyze N! possible scheduling routines (algorithms) for a given multi-cluster tool configuration and a given N-step process sequence. The invention derives a plurality of possible scheduling algorithms for a given set of input parameters and then compares the algorithms by allowing either the user or an automated process to assign each processing step within the proposed schedule a rank ordered priority. Other process or wafer movement parameters may also be given ranges such that the invention can automatically derive optimal schedules with respect to various parameter values. By comparing the results achieved with each scheduling algorithm, the method identifies the "best" schedule algorithm for a specific tool and tool parameters.

The invention discloses a hydraulic fracturing technology for a horizontal well with fractures. The hydraulic fracturing technology comprises the following steps in sequence: (1), according to on-site information, calculating the stress difference values caused by major fractures and adjacent fractures; (2), according to the stress difference values caused by the major fractures and the adjacent fractures, calculating the pressure required when the fracture turns; (3), according to the pressure required when the fracture turns, determining the intensity of temporary plugging agents, and calculating the corresponding construction displacement; (4), according to the design parameters, conducting the segmental multi-cluster fracturing and impulse-type temporary plugging pressurizing technology on a reservoir stratum simultaneously. The hydraulic fracturing technology is mainly based on the horizontal stress difference drop-out values caused by the major fractures and the adjacent fractures, and simultaneously adopts the segmental multi-cluster fracturing and impulse-type temporary plugging pressurizing technology to force the fracture to turn, breaks through the technical bottleneck that the fractures are difficult to form in the stratum with a high stress difference and rudimentary natural fractures, and fills in the blank in the prior art.

The invention provides a cluster job scheduling system with an elastic framework. The job scheduling system adopts a B/S structure, and a client can conveniently submit and manage jobs through a web browser to provide a single system image for multi-cluster job management. The system structure comprises a scheduler management module, a resource management module, a job management module, an application management module and a strategy management module, wherein the scheduler management module can construct different schedulers between clusters and inside the clusters; the schedulers can select and use different scheduling strategies; and the job management module obtains corresponding application configuration and application running commands from the application management module according to the application attributes of jobs. When the job is submitted, a job running script is automatically generated to provide a flexible scheduling mechanism for job scheduling, thereby facilitating users.

The invention discloses a volume transformation process of a low permeability reservoir, and the volume transformation process sequentially comprises the following steps of (1) selecting a coal bed, shale, tight sand or other low-permeability reservoir; and (2) adopting a pitching current-limiting hydraulic fracturing way after perforating a plumb shaft; adopting a segmental multi-cluster perforation hydraulic fracturing way after perforating a horizontal well; and varying displacement, propping agent, fracturing fluid and sand ratio in the pumping process in both fracturing ways. Due to adopting the measures for varying the displacement, the sand ratio, the propping agent and the fracturing fluid in the hydraulic fracturing process, pitching current limitation can be adopted when the plumb shaft is fractured or the segmental multi-cluster perforation fracturing process is adopted for the horizontal well, and a netted crack system is formed in the reservoir. Due to adopting the volume transformation process, the volume transformation effect is realized, the weakness of the traditional hydraulic fracturing process that a single crank cannot conform to the commercial production capacity or the later yield is reduced too fast can be avoided, and technical support can be provided for the oil-gas resource development of the low-permeability reservoir.

Improved techniques are provided for detecting and correcting errors and skew in inter-cluster communications within computer systems having a plurality of multi-processor clusters. The local nodes of each cluster include a plurality of processors and an interconnection controller. Intra-cluster links are formed between the local nodes, including the interconnection controller, within a cluster. Inter-cluster links are formed between interconnection controllers of different clusters. Intra-cluster packets may be serialized and encapsulated as inter-cluster packets for transmission on inter-cluster links, preferably with link-layer encapsulation. Each inter-cluster packet may include a sequence identifier and error information computed for that packet. Clock data may be embedded in symbols sent on each bit lane of the inter-cluster links. Copies of transmitted inter-cluster packets may be stored until an acknowledgement is received. The use of inter-cluster packets on an inter-cluster link is preferably transparent to other links and to the protocol layer.

A multi-cluster database management system is disclosed that distributes and manages data across a multi-cluster database through the use of cluster partitions. The multi-cluster database management system assigns cluster partitions to clusters of the multi-cluster database. The multi-cluster database management system can evenly or substantially evenly divide the cluster partitions and associated data among the clusters of the multi-cluster database. The multi-cluster database management system can scale in or out by adding or removing clusters from the multi-cluster database when needed or desired. Once a cluster is added or removed, the multi-cluster database management system re-balances the cluster partitions and the associated data across the clusters of the modified multi-cluster database.

The invention provides a method for establishing a database cluster by utilizing virtualization, which utilizes the technical advantages of virtualization, ensures that all processing units in the database cluster obtain optimal resources, simultaneously improves the resource utilization rate of a physical hardware, and realizes the rapid deployment, expansion of the database cluster, the dynamic migration, the resource isolation of a multi-cluster system and the dynamic management of system resources, wherein the all processing units in the database cluster obtain optimal resources, i.e. a CPU, a memory and IO resources are customized and allocated in advance for a virtual machine according to the requirements of the processing unit in the database cluster for the resources in an underlying server system of the virtual machine; the improvement of the utilization rate of system resources means that a plurality of virtual machines are deployed and operated on the underlying server system of the virtual machine so as to improve the resource utilization rate of the underlying server of the virtual machine; the rapid deployment and expansion of the database cluster mean that the rapid expansion of the database cluster is realized through the mirroring replication function of a virtualized software; and the dynamic migration means that the dynamic migration of the virtual machine is realized by utilizing the virtualized software, and the service of the database cluster is not interrupted.

The invention belongs to the field of oil and gas field exploration, discloses novel technology for volume fracturing of a compact oil reservoir, and particularly relates to a sectioned multi-cluster synchronous volume fracturing technology for double horizontal wells. The technology is characterized by including the steps of synchronous fracturing selection, synchronous fracturing well selection, multi-section and multi-cluster perforation position determination, synchronous fracturing construction and synchronous fracturing effect evaluation. In the technology, cracks are impelled to turn by means of interference among the cracks, thereby realizing complicated netted cracks and effectively modifying the compact oil reservoir.

The invention relates to the technical field of cloud computing, and in particular relates to a self-adaptation resource monitoring system and method based on a large-scale cloud computing platform. The method comprises the steps of establishing a multi-clustering system by setting up a cloud environment; acquiring a network topological graph under the cloud environment, and monitoring the state of each node or virtual machine according to the topological graph; and customizing a monitoring parameter configuration template, and monitoring the resource use condition of each node or virtual machine. According to the invention, the monitoring system can be well adaptive to dynamic addition and quit of resources on the cloud platform, the information collected by monitoring can well reflect the load information on the platform. The self-adaptation resource monitoring system and method can be applied to the monitoring of the resources on the cloud computing platform.

The invention discloses an express delivery unmanned aerial vehicle (UAV) multi-cluster safe route control method and control system, wherein, the method comprises receiving ordering of a client; planning an exclusive route for reach UAV based on ordering address information, controlling the UAV to fly to the destination according to the exclusive route, and correcting the route when the UAV is detected to deviate from the exclusive route; and controlling the UAV to hover when an obstacle is detected in a preset safety zone of the UAV, and controlling the UAV to fly according to the principle of route avoidance. The control method in the embodiment of the invention achieves orderly flight of the UAVs in the air through exclusive route planning, route deviation correction and flight safety zone emergency avoidance, and ensures the safety of simultaneous flying of a UAV multi-cluster in the air.

The invention discloses an open-hole horizontal well multi-cluster sliding sleeve staged fracturing string and a fracturing method thereof. According to the invention, a ball-throwing open type multi-cluster sliding sleeve is introduced on the basis of an existing mature open-hole horizontal well staged fracturing technology, wherein the main method comprises the following steps of: installing a plurality of groups of multi-cluster sliding sleeves in each packed-off interval, after finishing the installation, opening the plurality of groups of multi-cluster sliding sleeves step by step in a packed-off interval by throwing a ball, and matching with a standard ball-throwing open type sliding sleeve so as to isolate each fractured interval. According to the novel process, a plurality of major fractures can be formed in each packed-off interval, the reservoir transformation intensity is high, the drainage volume is expanded simultaneously, the defect that a sliding sleeve is mounted in each packed-off interval to form only one major fracture during the existing open-hole horizontal well staged fracturing is solved, the fracturing effect is greatly improved, and the yield of an oil-gas well can be furthest increased simultaneously.

The invention discloses a reconfigurable method of a multi-cluster system and is used for solving the problem of flexible configuration such as combination of clusters, detachment of clusters. The multi-cluster system comprises a plurality of member clusters, wherein each member cluster comprises a management node and a calculation node; the management node is provided with a scheduler and a work manager; the management node is only interacted with one activated scheduler to schedule work; the member clusters are further divided into a master cluster and auxiliary clusters; and the master cluster is the member comprising the member clusters of the activated scheduler while the auxiliary cluster is the member cluster comprising no such scheduler. The method further comprises the following processing: processing one, according to system request, adding one cluster to be combined into the present multi-cluster; processing two, according to system request, determining a new master cluster when the master cluster quits from the present multi-cluster; and processing three, according to system request, removing an auxiliary cluster from the present multi-cluster, and rearranging the multi-cluster.

A container Cloud-platform multi-cluster building method based on Kubernets and OpenStackcomprises that step of establishing a control cluster in the container cloud platform, defining a cluster API through the control cluster CRD, and creating a cluster controller and a node resource pool in the controller cluster; controlling the cluster to receive the cluster operation request and modify the cluster CR record sent by the user, The cluster controller using list- Watch mechanism to check cluster CR records and resource changes, delete and add user clusters according to resource changes, delete and add nodes, and the cluster controller updating cluster status, controllingthe cluster to receive the cross-cluster operation request sent by the user, the cluster controller judging whether thecross-cluster operation request corresponds to the cluster API or not, if yes, forwarding the cross-cluster operation request to the corresponding cluster for processing, otherwise, processing the cross-cluster operation request. The invention also relates to a storage medium and an electronic device. The invention realizes the construction of multiple clusters and multiple tenants of the container cloud platform, uniformly manages multiple clusters, and can share the same cluster among tenants.

The invention relates to the technical field of horizontal well fracturing, and discloses a new fracturing process suitable for the encrypted development of a shale gas well, which comprises the following steps of (1) collecting the data; (2) analyzing the stress and compressibility; (3) designing the interval of the segment clusters; (4) designing the number of clusters; (5) carrying out the temporary plugging design in the midway; (6) designing the construction displacement; (7) designing a fracturing scale; and (8) designing a sand adding mode. According to the essence of the method, the small-section multi-cluster segmented design of reducing the section cluster spacing is carried out on the target horizontal well by analyzing the single well ground stress characteristics and the compressibility of the shale gas well of encrypted development; meanwhile, the pumping design of the variable-density perforation, midway ball throwing temporary plugging and continuous sand adding is combined, and finally, the effect of improving the single well transformation complexity and the reservoir transformation efficiency is achieved, the volume transformation of the whole horizontal well isachieved, the crack complexity is improved, the transformation strength is improved to a larger extent through improvement of a sand adding mode and a pumping program, and meanwhile the single well construction cost is reduced.

The invention discloses a cluster interval optimizing method for segmental multi-cluster fracturing of a horizontal well of a low-permeability oil and gas reservoir. The cluster interval optimizing method for segmental multi-cluster fracturing of the horizontal well of the low-permeability oil and gas reservoir sequentially comprises the following steps that (1) the induced stress generated by hydraulic fractures in a stratum is calculated; (2) the formation pore pressure after fracturing liquid is leaked off is calculated; (3) formation pore elastic stress after the fracturing liquid is leaked off is calculated; (4) the three induced stress fields and the original ground stress field are superposed, so that a new ground stress field is obtained; (5) facture network waves and the region area are calculated; and (6) a relation curve chart of the fracture cluster interval, the fracture network waves and the region area is drawn with the cluster interval being used as x-coordinates and the fracture network waves and region areas being used as y-coordinates, and the optimal cluster interval is determined. According to the cluster interval optimizing method for segmental multi-cluster fracturing of the horizontal well of the low-permeability oil and gas reservoir, the interference effect of the hydraulic fractures on the original ground stress field is considered, the expanding and shear fracturing behaviors of natural fractures under a complex ground stress field condition are also considered, and the novel cluster interval optimizing method is formed with the optimization goal of obtaining the maximum fracture network wave and the maximum region area; and the novel cluster interval optimizing method is more objective, accurate and practical.

The invention discloses a time-divided transmission method capable of avoiding interference and adopting D2D multi-casting communication for a cellular network. The method adopts the scheme that: adapting a cluster geographical range by regulating cluster head terminal transmitting power, and carrying out time-divided transmission; namely, distributing clusters with interference terminals to different time slot transmission data to avoid cluster interference; and selecting a plurality of clusters with no interference to be transmitted in a multi-casting manner in the same time slot, and fully utilizing each time slot to improve the network transmission efficiency. Therefore the method is called an each time slot multi-cluster transmission method. The time-divided transmission method provided by the invention not only avoids interference between clusters, but also greatly reduces the number of required time slots, and the network transmission efficiency is improved.

The system comprises multi clusters independently each other; each cluster comprises a working cluster head and multi in-cluster nodes; said working cluster head periodically detects its own dump energy and working status, and relays the data of nodes in its own cluster, and receives the relay request from nodes in other clusters, and relays the data of nodes in other clusters; said in-cluster nodes periodically estimates the working status of said working cluster head; when the working cluster head is not capable of relaying data, selecting the one of other cluster heads as the standby cluster head, and relaying the request to it. The invention also reveals a clustering routing method based on the system.

An embodiment of the invention provides a method and system for optimizing multi-cluster fracturing in a horizontal well section and applies to an apparatus for optimizing multi-cluster fracturing in a horizontal well section. The method includes: constructing a fracturing fluid flow control equation set, a stress interference calculation control equation set and a multi-fracture synchronous expansion three-dimensional morphology calculation equation set according to stratum parameters and multiple construction parameter sets, and constructing, on such basis, an internal multi-cluster fracture three-dimensional expansion model of a horizontal well section by considering inter-fracture stress and dynamic flow distribution; simulating fracture morphology under different construction parameters according to the constructed internal multi-cluster fracture three-dimensional expansion model of the horizontal well section so as to optimize construction parameters. The method and system according to the invention consider multiple influence factors to establish the internal multi-cluster fracture three-dimensional expansion model of the horizontal well section, and good optimization is achieved.

The embodiment of the invention provides a horizontal well sectioning multi-cluster perforating and fracturing optimizing method and device and relates to the field of oil and gas field capacity expansion revamping. The method comprises the steps that an inter-cluster flow dynamic distribution model is built, and fluid pressure in cracks is calculated; a stress interference model is built; in terms of the stress interference model and the inter-cluster flow dynamic distribution model, a multi-cluster fracturing crack dynamic extension model is built; and a multi-crack simultaneous expanding step length model is built, and construction parameters meeting the multi-cluster fracturing crack dynamic extension model are substituted into the multi-crack simultaneous expanding step length model to obtain optimal construction parameters. By utilizing the multi-cluster fracturing crack dynamic extension model, the construction parameters according with conditions can be selected, then by utilizing the multi-crack simultaneous expanding step length model, the expanding step length and the angle are calculated, and the optimal construction parameters are selected. The defect that in the prior art, during constructing, it is considered that all clusters of cracks can extend effectively is overcome, and the parameters such as the cluster spacing and the perforating mode can further be selected optimally.

Improved techniques are provided for detecting and correcting errors and skew in inter-cluster communications within computer systems having a plurality of multi-processor clusters. The local nodes of each cluster include a plurality of processors and an interconnection controller. Intra-cluster links are formed between the local nodes, including the interconnection controller, within a cluster. Inter-cluster links are formed between interconnection controllers of different clusters. Intra-cluster packets may be serialized and encapsulated as inter-cluster packets for transmission on inter-cluster links, preferably with link-layer encapsulation. Each inter-cluster packet may include a sequence identifier and error information computed for that packet. Clock data may be embedded in symbols sent on each bit lane of the inter-cluster links. Copies of transmitted inter-cluster packets may be stored until an acknowledgement is received. The use of inter-cluster packets on an inter-cluster link is preferably transparent to other links and to the protocol layer.

A multi-cluster processing system and a method of operating a multi-cluster processing system are provided. The multi-cluster processing system includes: a first cluster including a plurality of first-type cores: a second cluster including a plurality of second-type cores; and a control unit configured to monitor loads of the first-type cores and the second-type cores, wherein when utilization of at least one of enabled first-type cores exceeds a predetermined threshold utilization of each of the first-type cores, the control unit enables at least one of disabled first-type cores in a first mode, and the control unit enables at least one of the disabled second-type cores and disables the first cluster in a second mode, wherein an amount of computation per unit of time of each of the second-type cores is greater than an amount of computation per unit of time of each of the first-type cores.

A method of reducing transmission power is provided. In the method, a signal is transmitted by performing maximum power reduction (MPR) on maximum output power for the signal to be transmitted, when multi-cluster transmission is performed in a single component carrier. Here, the MPR is performed differently depending on a resource allocation ratio A. The resource allocation ratio A is defined as a ratio between N_{RB<sub2>—</sub2>agg} and N_{RB<sub2>—</sub2>alloc}. The N_{RB<sub2>—</sub2>agg} represents the number of resource blocks (RBs) in a channel band, and the N_{RB<sub2>—</sub2>alloc} represents the total number of RBs transmitted at the same time.