Method and device for interpreting micro-logging information and acoustic logging information in united mode
A technology of well logging data and micro-logging, which is applied in the field of joint interpretation of micro-logging data and acoustic logging data, and interpretation of near-surface models. Effect
Active Publication Date: 2014-11-05
BC P INC CHINA NAT PETROLEUM CORP +1
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[0003] The purpose of the present invention is to provide a method and device for interpreting near-surface models in combination of micro-logging data and acoustic logging data, so as to solve the shortcomings of the existing micro-logging detection depth.
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[0048] 1) Collect micro-logging data and pick up first arrival;
[0049] The micro-logging data described in step 1) and picking the first arrival is to pick the first arrival of the micro-logging data, and pick the first arrival time.
[0050] 2) Collect near-surface acoustic logging data and provide velocity curves
[0051] The collection of near-surface acoustic logging data and the provision of velocity curves in step 2) refer to collection of acoustic logging data from near the surface downwards (conventional acoustic logging is collected from deeper layers, for the study of surface Structural acoustic logging starts from near the surface), and provides velocity curve results, such as image 3 As shown, the acoustic logging of this example is collected from 7 meters above the surface.
[0052] 3) Offset correction for the first arrival of micro-logging
[0053] Step 3) described in carrying out the deep correction of the offset distance to the first arrival of the micr...
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The invention provides a method and device for interpreting micro-logging information and acoustic logging information in a united mode. The method includes the steps of (1) collecting the micro-logging information, and carrying out first-break picking on the micro-logging information to generate micro-logging first-break time; (2) collecting the near-surface acoustic logging information, and extracting acoustic logging speed data; (3) carrying out offset distance depth correction on the micro-logging first-break time to generate micro-logging time-depth relation data; (4) generating acoustic logging time-depth relation data according to the micro-logging time-depth relation data and the acoustic logging speed data; (5) merging the micro-logging time-depth relation data and the acoustic logging time-depth relation data to generate combined time-depth relation data; (6) carrying out horizon interpreting according to the combined time-depth relation data to generate horizon interpreting results. According to the method and device, the micro-logging information is used as a base, the acoustic logging information is converted into an accumulated time-depth relation and combined with the micro-logging information to interpret a near-surface model, the accuracy of surface-layer surveying information is effectively improved, and the investigation depth is effectively increased.
Description
technical field [0001] The invention relates to the field of geophysical seismic exploration, in particular to a method and device for joint interpretation of micro-logging data and acoustic logging data, specifically, a method and device based on micro-logging data combined with acoustic logging data interpretation Method and apparatus for near-surface modeling. Background technique [0002] In geophysical seismic exploration, micro-logging is one of the main surface investigation methods, but its detection depth is limited when the surface is extremely thick, so the precision of surface investigation is not high. Contents of the invention [0003] The purpose of the present invention is to provide a method and device for interpreting near-surface models in combination of micro-logging data and acoustic logging data, so as to solve the shortcoming of limited detection depth of existing micro-logging. [0004] In order to achieve the above object, the embodiment of the pr...
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Inventor 祖云飞冯泽元王秋成蓝益军侯喜长
Owner BC P INC CHINA NAT PETROLEUM CORP