CN102565851A - Method for storing seismic data - Google Patents
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- CN102565851A CN102565851A CN2011104245926A CN201110424592A CN102565851A CN 102565851 A CN102565851 A CN 102565851A CN 2011104245926 A CN2011104245926 A CN 2011104245926A CN 201110424592 A CN201110424592 A CN 201110424592A CN 102565851 A CN102565851 A CN 102565851A
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Abstract
The invention relates to the field of processing and explaining of seismic prospecting data in oil seismic prospecting, in particular to a method for storing seismic data. The method comprises the following steps of: A) selecting a seismic channel datum from a plurality of seismic channel data; B) computing a storage address in a second storage area where the selected seismic channel datum is stored; C) storing an index datum into a first storage area, wherein the index datum comprises the storage address and a channel head datum which corresponds to the selected seismic channel datum; D) storing the selected seismic channel datum into the computed storage address in the second storage area; and E) repeatedly executing the steps A) to D) until all seismic channel data are stored in the second storage area, wherein the channel head datum which corresponds to the seismic channel datum comprises shot point information and detector information.
Description
Technical field
The seismic prospecting data that the present invention relates to oil seismic exploration is handled and the explanation field, at length, relates to the storage means of seismic data data.
Background technology
The seismic data data are crucial data resources in the oil-gas exploration and development research work, are the valuable assets of oil and gas industry.Add its complicacy because of the quantity of geological data is huge, make and compare, especially be difficult to management, storage and access with the other types data.
Usually; The method of employed description seismic data data in seismic data processing interpretation work; The result who is drawn when directly being used for data processing usually is difficult to satisfactory; This is because for the visit of specific seismic channel data and the visit of seismic channel data at random, because the index of lack of complete need carry out could confirming its accurate position hereof after the sequential scanning to the seismic channel data of its front; Such operation greatly reduces the efficient of data access, is difficult to satisfy the demand to the geological data random access; Simultaneously its redundant information of comprising is too many, and data load speed is very slow, and reformatting efficient is low, and the expense of system resource is big, and is very big to processing of seismic data interpretation work effectiveness affects.
Summary of the invention
The object of the present invention is to provide a kind of seismic data date storage method that can improve the access efficiency of geological data.
To achieve these goals, the present invention provides a kind of seismic data date storage method, and this seismic data date storage method comprises following steps: A) from a plurality of seismic channel data, select a seismic channel data; B) seismic channel data of calculating said selection stores the memory address in second storage area into; C) with index datastore to first storage area, this index data comprises said memory address and the trace header data corresponding with the seismic channel data of said selection; D) seismic channel data with said selection stores in the memory address that calculates in second storage area; E) repeating step A) to D) up to all storing said a plurality of seismic channel data into second storage area, wherein, the trace header data of seismic channel data comprise shot point information and wave detector information.
Preferably, also store the end of a thread information, road header, the end of a thread data in first storage area, wherein, the end of a thread information is used for that the definition wires first place is claimed, the end of a thread data type, the end of a thread data length; The road header is used to define trace header title, trace header data type, trace header data length; The end of a thread data comprise the public information in the seismic exploration data.
Preferably, at step B) in, the data length of the memory address of N-1 seismic channel data and N-1 seismic channel data is calculated the memory address of N seismic channel data in the Calais mutually, wherein N is the natural number greater than 1.
Preferably, in said first storage area with 512 bytes store the end of a thread data and a plurality of trace header data of regular length.
Preferably, the file layout of said seismic channel data adopts the fixed length number of samples, and the length of each seismic channel data is identical.
Preferably, at step B) in, based on the memory address of N the seismic channel data of length computation of the start address of data volume file and N-1 seismic channel data, wherein N is the natural number more than or equal to 1.
The storage means of seismic data data of the present invention has improved the memory access efficient of geological data, handles in the interpretation work process at seismic data, can operate geological data neatly.
The storage means of seismic data data of the present invention need not to set up other index files, has saved storage space, and when a certain trace header data are deleted in the header file of geological data, need not to change the seismic data volume file specially, thereby reduced maintenance cost.
Seismic data date storage method of the present invention has been strengthened the rule degree of geological data, makes the more unified and standard of management of geological data.
Description of drawings
Fig. 1 is the process flow diagram that storage seismic data data of the present invention are shown;
Fig. 2 illustrates the synoptic diagram of storing seismic channel data successively of the present invention.
Embodiment
Below, specify embodiments of the invention with reference to accompanying drawing.
Therefore the data volume of seismic data is huge, when visiting specific seismic channel data, especially when this seismic trace is positioned at the rearmost position just, need go through time all geological datas, so the stand-by period is longer.The present invention at first is divided into the end of a thread information, the end of a thread data, road header, trace header data and seismic trace information with a geological data for the ease of storage and index.Wherein, the end of a thread information be used for that the definition wires first place is claimed, the end of a thread data type and the end of a thread data length; The end of a thread data are used for writing down the important public information of seismic exploration data, like the survey wire size of seismic prospecting, and the sampling number of geological data, SI, the file type of geological data (workstation/microcomputer), data dimension (two-dimensional/three-dimensional) etc.; The road header is used to define trace header title, trace header data type and trace header data length; The trace header data are used to write down shot point information and wave detector information etc.; Seismic trace information is the earthquake wave amplitude that wave detector receives.
When storing geological data first; According to geophysics industry standard specification definition wires header and road header in advance, and with this end of a thread information, road header and the end of a thread data storage in geological data header file (being equivalent to be stored in first storage area).After this, corresponding with these the end of a thread data trace header data all are stored in this header file.
Below, will the process of storing the seismic data data be described with reference to Fig. 1, wherein Fig. 1 is the process flow diagram that storage seismic data data of the present invention are shown.
With reference to Fig. 1, when the storage seismic channel data,, calculate and store said seismic channel data in the data volume file (that is second storage area) memory address at step S101.When on the data volume file, storing seismic channel data successively, can calculate current memory address from the memory address of previous seismic channel data.
Secondly, at step S103, to the geological data header file, wherein this index data comprises said memory address and the trace header data corresponding with this seismic channel data with index datastore.Each trace header data all has corresponding seismic channel data, and therefore separate storage trace header data of the present invention and seismic channel data when the visit seismic channel data, need not to retrieve seismic channel data, have therefore saved the access time.
Then, at step S105, seismic channel data is stored in the seismic data volume file (that is, is stored in second storage area).
The seismic channel data that takes place at each trace header is a lot, so repeating step S101 to S105, up to whole seismic channel data all are stored in the data volume file.
In the present invention,, thereby when the visit seismic channel data, only need inquire about the end of a thread data and trace header data successively, can find the seismic channel data that needs visit easily, save time and expense seismic channel data and other data separate storage.
With reference to Fig. 2, the situation of in the data volume file, storing seismic channel data successively is described.
Can know that with reference to Fig. 2 each header file comprises the end of a thread information, a road header, the end of a thread data and a plurality of index data.In header file, store the trace header data successively, in the data volume file, also store seismic channel data equally successively.According to storage means shown in Figure 2, can simply easily store data, and calculate the memory address of seismic channel data easily.
For example, when storage during N seismic channel data, with the data length addition of the memory address and N-1 the seismic channel data of N-1 seismic channel data, thereby obtain the memory address of N seismic channel data, wherein N is the natural number greater than 1.Obviously, when N equaled 1, when promptly storing first seismic channel data, its memory address was the start address of data volume file.
And in header file, the length (predetermined memory space) of available fixing predetermined bite is stored the end of a thread and trace header data, and makes each trace header data occupancy predetermined bite.The byte length of predetermined memory space and trace header can decide according to the complexity of real data, and, consider the storage characteristics of computing machine, the length of the multiple of the length preferred 2 of predetermined memory space and trace header byte.Preferably, store the end of a thread and trace header data with the storage space of 512 byte lengths, and 4 bytes of each trace header data occupancy.
In the present invention, for the geological data that standardizes, seismic channel data adopts the fixed length number of samples, guarantees that each seismic channel data length is identical.
At this moment, when storage during N seismic channel data, based on the memory address of N the seismic channel data of length computation of the start address of seismic data volume file and N-1 seismic channel data, wherein N is the natural number more than or equal to 1.
The invention is not restricted to the foregoing description, without departing from the present invention, can carry out various distortion and modification.
Claims (6)
1. a seismic data date storage method is characterized in that, comprises following steps:
A) from a plurality of seismic channel data, select a seismic channel data;
B) seismic channel data of calculating said selection stores the memory address in second storage area into;
C) with index datastore to first storage area, this index data comprises said memory address and the trace header data corresponding with the seismic channel data of said selection;
D) seismic channel data with said selection stores in the memory address that calculates in second storage area;
E) repeating step A) to D) up to all storing said a plurality of seismic channel data into second storage area,
Wherein, the trace header data of seismic channel data comprise shot point information and wave detector information.
2. seismic data date storage method according to claim 1 is characterized in that, also stores the end of a thread information, road header, the end of a thread data in first storage area,
Wherein, the end of a thread information be used for that the definition wires first place is claimed, the end of a thread data type, the end of a thread data length; The road header is used to define trace header title, trace header data type, trace header data length; The end of a thread data comprise the public information in the seismic exploration data.
3. seismic data date storage method according to claim 1; It is characterized in that; At step B) in; The data length of the memory address of N-1 seismic channel data and N-1 seismic channel data is calculated the memory address of N seismic channel data in the Calais mutually, and wherein N is the natural number greater than 1.
4. seismic data date storage method according to claim 2 is characterized in that, in said first storage area with 512 bytes store the end of a thread data and a plurality of trace header data of regular length.
5. seismic data date storage method according to claim 1 is characterized in that, the file layout of said seismic channel data adopts the fixed length number of samples, and the length of each seismic channel data is identical.
6. seismic data date storage method according to claim 5; It is characterized in that; At step B) in, based on the memory address of N the seismic channel data of length computation of the start address of data volume file and N-1 seismic channel data, wherein N is the natural number more than or equal to 1.
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| CN2011104245926A CN102565851A (en) | 2011-12-16 | 2011-12-16 | Method for storing seismic data |
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Cited By (7)
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| CN102902709A (en) * | 2012-08-02 | 2013-01-30 | 何建亿 | Space allocation fixing file memory system and implementation method |
| CN103901468A (en) * | 2014-03-18 | 2014-07-02 | 中国石油集团川庆钻探工程有限公司地球物理勘探公司 | Seismic data processing method and device |
| CN104317536A (en) * | 2014-11-12 | 2015-01-28 | 中国石油集团川庆钻探工程有限公司地球物理勘探公司 | Device and method for storing seismic data cube and reading seismic channels |
| CN105320513A (en) * | 2014-07-31 | 2016-02-10 | 中国石油化工股份有限公司 | I/O (input/output) method suitable for any SEG-Y seismic data |
| CN106790389A (en) * | 2016-11-25 | 2017-05-31 | 中国石油天然气集团公司 | The acquisition methods of seismic channel data, host node server and working node server |
| CN109101615A (en) * | 2018-08-07 | 2018-12-28 | 中国石油天然气集团有限公司 | Method for processing seismic exploration data and device |
| CN117519610A (en) * | 2024-01-05 | 2024-02-06 | 中国石油集团东方地球物理勘探有限责任公司 | Method, device and medium for creating CMP data body by post-stack seismic data |
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| CN106790389A (en) * | 2016-11-25 | 2017-05-31 | 中国石油天然气集团公司 | The acquisition methods of seismic channel data, host node server and working node server |
| CN109101615A (en) * | 2018-08-07 | 2018-12-28 | 中国石油天然气集团有限公司 | Method for processing seismic exploration data and device |
| CN117519610A (en) * | 2024-01-05 | 2024-02-06 | 中国石油集团东方地球物理勘探有限责任公司 | Method, device and medium for creating CMP data body by post-stack seismic data |
| CN117519610B (en) * | 2024-01-05 | 2024-03-22 | 中国石油集团东方地球物理勘探有限责任公司 | Method, device and medium for creating CMP data body by post-stack seismic data |
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Application publication date: 20120711 |