Study On The Seismic Data Storage Technlogy

Summary of seismic data storage technology in seismic exploration techniques, computer storage technology and computer networks, integration of technology, network and computer storage technology development to improve the effectiveness of seismic data storage, so as to promote the further development of the collection and processing technology. Characteristics of seismic data capacity, large dynamic range, established SEG seismic exploration using this business format and stored. Seismic exploration in the heavy use of tape and disk, tape control research on seismic data and disk read/write technology can solve many problems in the acquisition and processing.This study is intended for Unix, Linux operating system, make a kind of method of preparation of the tape controlled driver's operating system header files. Unix system header file defines the control command of tape, on the differences between different systems are reflected in the header file, read and write tape data in connection with the manipulation and the head of these header files to the correct location. For based on Intel chip and IBM, and Sun, of computer for data exchange, must for word sequence adjustment, this times research development has a bit operations of programming method solution data exchange of problem, method is will a word in the of 1, and 4 byte and 2, and 3 byte exchange order, for mass of seismic data, this bit operations of method improve has different computer data exchange of efficiency, using this shift operation of bit operations also to will seismic data often using of 32 bit IBM floating points conversion into computer recognition of IEEE floating points.Petroleum data bank PetroBank is oilfield data management platform, it accumulated many years of seismic data can be stored in the system. Of seismic data is not only a SEG-Y format data, also includes a large number of documents, reports, maps, and so on. Analysis of the study and classification of various types of seismic data exploration phase will correspond to the type of seismic data and PetroBank data management, develop load flow chart of seismic data based on correspondence tables for data loading, and subsequent research and production will be able to browse, query and download. This research through a number of seismic data is loaded, have established and developed field/prestack seismic data, after overlapping data, speed, loading data workflow.System process is a special service, it detached from the user, user group and terminals, with State such as sleep, wait and run, occupy less system resources. Socket programming technology is through soft socket to connect two computers, data transmission and communication. This study is intended for system processes and characteristics of the Socket programming, proposed method for the system process combined with Socket programming, network storage, remote seismic data tape drives and other peripherals, such as shared. PVM and MPI are two parallel programming system, which system processes and the use of Socket technology completes the data communication between computers and storage.DAS, NAS and SAN is the computer's main storage methods. DAS, NAS and SAN is the computer's main storage methods. DAS is connected through a system bus directly to the disk on the host, its storage capacity is not large, but this way you can meet the needs of storage for seismic interpretation. Both NAS and SAN is a network-based storage, however, very large storage capacity of the two, NAS is based on TCP/IP protocol network file systems, SAN is a network of regional storage based on optical fiber protocols. Characteristics of NAS data is very easy to share but the network speed is limited, the mass of the three dimensional pre-stack processing bottlenecks. SAN feature is network transmission speed but there will be problems of data cannot be shared, for a cluster computer, SAN is to meet seismic data storage needs, but for different clusters or computers using the same SAN network storage, seismic data sharing efficiency is reduced. StorNext is one solution to problems of SAN software, based on SAN storage network StorNext FS file system. Seismic data user through the file system storage, managed by StorNext SAN network data storage such as disk, tape, thus solving the seismic data sharing problems can also implement seismic data backup. This study by a block of three-dimensional seismic processing, apply the StorNext file system management SAN network disk summarized with StorNext software storage SAN network storage technologies can increase the speed of processing efficiency and seismic data storage.Comparison of seismic data storage technology in China and abroad development situation, neither the software nor the hardware there is a big gap, acquisition of seismic instruments in research and development and also is developing seismic processing software, mastering advanced networked storage technologies, automated tape library technology is essential for the development of domestic processing software. Computer networking and storage technology is developing rapidly, seismic data storage technology is adjusted accordingly, to keep the computer technology combining the characteristics of seismic data storage, application to seismic acquisition, processing and interpretation, enhancing the efficiency of petroleum seismic exploration.