Nine surface element consistency parallel processing method for time lapse earthquake

A parallel processing and time-lapse seismic technology, which is applied in seismic signal processing and other directions, can solve the problem of large amount of seismic data and achieve the effects of improving processing speed, oil and gas recovery, and accuracy

Active Publication Date: 2016-07-06
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

Using nine bins for processing can better improve the consistency of seismic data, but it has higher requirements for algorithms, computing resources and time, especially the large amount of pre-stack seismic data, and many problems encountered in actual processing. question

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  • Nine surface element consistency parallel processing method for time lapse earthquake
  • Nine surface element consistency parallel processing method for time lapse earthquake
  • Nine surface element consistency parallel processing method for time lapse earthquake

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Embodiment

[0034] Embodiment: In this embodiment, four computer nodes are used for parallel processing, and the data communication between computer nodes adopts MessagePassingInterface, that is, the standard message passing interface MPI, but the present invention is not limited to using MPI, and other methods can also be used.

[0035] 1) Read the benchmark data D from the storage medium (such as tape, disk, etc.) to the memory of the master node b In the nth CMP gather in , the corresponding surface element is B(i, j), and the gather contains m 1 seismic data.

[0036] 2) Read the monitoring data D from the storage medium (such as tape, disk, etc.) m The data of the three main survey lines in (i-1, i and i+1) are divided into 3 sections on average, and read into the memory of the 2nd to 4th slave nodes respectively.

[0037] 3) The second to fourth slave nodes search in parallel for the nine-bin seismic data corresponding to bin B(i, j). and send it to the master node; the master no...

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Abstract

The invention relates to a nine surface element consistency parallel processing method for a time lapse earthquake, comprising steps of using the two sets of earthquake data which are collected at different time in the same zone as reference data and monitoring data, adopting parallel k+1 nodes, wherein the first parallel node is used as a main node, reading an nth CMP gather in the reference data into a main node memory from a storage medium, wherein the corresponding surface element is B(I,j), reading data of three main detection lines in the monitoring data from the storage medium, equally dividing the data into k segments, respectively reading into the memory of the parallel slave nodes, performing parallel searching on the nine surface element data corresponding to the surface element B (I,j) from the nodes, transmitting the searched nine surface element data to a main node, obtaining two blocks of data by the main node, wherein one block of data is nth CMP gather in the reference data, and the other block is the nine surface element data in the monitoring data, and performing extraction on the two blocks of data to obtain the new reference data and the new monitoring data to finish the nine surface element consistency parallel processing.

Description

technical field [0001] The invention relates to a seismic data processing method, in particular to a nine-panel consistent parallel processing method for time-lapse seismic. Background technique [0002] In the late 1980s, the time-lapse seismic method was proposed and applied in the field. The main idea is to observe the difference in seismic response through multiple seismic acquisitions at different times to determine the change of the reservoir over time, that is, the dynamic change. Time-lapse seismic is currently an effective means for monitoring oil and gas reservoirs, rationally adjusting development plans, and improving oil and gas recovery. It can analyze and study reservoir fluid movement, fluid composition, fluid saturation, pressure, and porosity caused by oil and gas reservoir exploitation. Changes in oil and gas reservoir characteristics such as temperature and temperature. [0003] Bin consistency processing is one of the important links in time-lapse seismi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 朱振宇张金淼何洋洋陈宝书汪小将王小六刘志鹏薛东川孙文博陈剑军桑淑云王清振欧阳炀仝中飞李丽霞张连群
Owner CHINA NAT OFFSHORE OIL CORP
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