Rapid three-dimensional horizon interpretation method based on horizontal navigation

A technology of horizon interpretation and fault interpretation, applied in the field of oil and gas exploration, it can solve the problems of horizon interpretation error, unclosed horizon interpretation space, failure to realize three-dimensional space interpretation, etc., and achieve the effect of reducing the impact.

Active Publication Date: 2014-07-23
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology

[0002] Seismic data interpretation includes three important parts: fault interpretation, horizon interpretation, and target geological body interpretation. At present, for the 3D seismic data collected and processed in the stage of oil and gas exploration and development, seismic inte

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  • Rapid three-dimensional horizon interpretation method based on horizontal navigation
  • Rapid three-dimensional horizon interpretation method based on horizontal navigation
  • Rapid three-dimensional horizon interpretation method based on horizontal navigation

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Embodiment

[0034] Embodiment: In order to quickly complete the horizon interpretation of an oilfield and implement the structural characteristics of the oilfield, the method of the present invention is used for horizon interpretation, including the following steps:

[0035] 1) Perform interpretive processing such as denoising and channel mixing on the seismic data used for horizon interpretation to enhance the lateral continuity of the original seismic data event and obtain a seismic data volume that can fully highlight horizon information.

[0036] 2) Extract the time slice near the horizon to be interpreted from the seismic data volume, and project the fault interpretation results completed by applying a fast 3D seismic fault interpretation method of plane navigation onto the time slice (such as figure 1 shown), the fault plane polygon is preliminarily compiled on this time slice, and it is used as a plane navigation slice for horizon interpretation.

[0037] 3) if Figure 2 to Figure...

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Abstract

The invention relates to a rapid three-dimensional horizon interpretation method based on horizontal navigation. The rapid three-dimensional horizon interpretation method based on horizontal navigation includes the following steps that (1), seismic data for horizon interpretation are processed in an interpretative mode, and a seismic data volume highlighting horizon information is obtained; (2), time slices near horizons are extracted, a fault interpretation result is projected to the time slices, and the time slices serve as horizontal navigation slices for horizon interpretation; (3), a horizon interpretation scheme is built; (4), another seismic section which can enter the next fault block without passing through faults is selected according to the horizon interpretation scheme, and horizon interpretation of the seismic section is carried out on the seismic data volume so that the horizon interpretation scheme can be introduced to the next fault block; (5), horizon interpretation of all the seismic sections of the faults within the whole area is finished; (6), the point of intersection between the horizon interpretation and fault interpretation is calculated and projected to a seismic work area base map, plane polygons of the faults on the horizon are compiled one by one, meshing calculation of the interpretation result of the horizons is carried out under the constraint of the plane polygons of the faults, the structural meshed plane of the horizons is obtained, and horizon interpretation is completed; (7), the steps (3)-(6) are carried out repeatedly, and interpretation of the horizons of the whole area is finished.

Description

technical field [0001] The invention relates to a seismic interpretation method in the field of oil and gas exploration, in particular to a fast three-dimensional horizon interpretation method based on plane navigation. Background technique [0002] Seismic data interpretation includes three important parts: fault interpretation, horizon interpretation, and target geological body interpretation. At present, for the 3D seismic data collected and processed in the stage of oil and gas exploration and development, seismic interpretation still adopts the traditional 2D interpretation, which fails to achieve real In the sense of three-dimensional space interpretation, because the horizon interpretation has the problem of spatial closure, therefore, the horizon interpretation often has a large error. Contents of the invention [0003] In view of the above problems, the object of the present invention is to provide a fast three-dimensional horizon interpretation method based on pl...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 范廷恩胡光义董建华宋来明高云峰樊鹏军张会来井涌泉田建华周建楠
Owner CHINA NAT OFFSHORE OIL CORP
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