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Quantitative characterization method of low-position domain land frame edge delta

A quantitative characterization and delta technology, applied in the field of deep water deposition, can solve the problems of complex and changeable morphology, affecting the prediction accuracy of favorable deep water sand bodies and oil and gas exploration areas, etc., to achieve accurate results, reduce errors, and enrich research methods.

Active Publication Date: 2021-09-03
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0003] However, although the study of deltas on the edge of the lowstand continental shelf has positive significance for the prediction of deep-water fans, their shapes are complex and changeable due to factors such as climate, sea level rise and fall, and sediment supply; various types of deltas are formed. , which also seriously affects the prediction accuracy of favorable deep-water sand bodies and oil and gas exploration areas

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  • Quantitative characterization method of low-position domain land frame edge delta
  • Quantitative characterization method of low-position domain land frame edge delta
  • Quantitative characterization method of low-position domain land frame edge delta

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[0058]The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined with each other. It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. The disclosure of the present invention uses "comprises" or "comprises" and other similar words to mean that the elements or objects appearing before the words include the elements or objects listed after the words and their equivalents, without excluding other elements or objects.

[0059] The invention provides a quantitative characterization method of a low-stand shelf edge delta, comprising the following steps:

[0060] S1: Select the profile of the tar...

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Abstract

The invention discloses a quantitative characterization method for a low-level domain land frame edge delta, and the method comprises the following steps: selecting a profile of a target delta, and dividing a three-level sequence interface of the target delta through employing a seismic termination relation based on a classical sequence stratigraphy theory; in the three-level sequence interface, identifying a first upper super point, a first lower super point and a maximum initial sea pan surface angle change point of the initial sea pan surface on the three-level sequence interface; reading time values of the three points, and converting the time values into depth values by using a time-depth conversion formula; calculating the product distance of the delta according to the depth value; calculating the progradation distance of the delta according to the plane positions of the three points; calculating the gradient of the delta according to the aggradation distance and the progradation distance; and determining the type of the delta according to the calculation result of the gradient. According to the method, the types of the land frame edge delta in the low-position domain can be quantitatively divided, and technical support is provided for deep water deposition research.

Description

technical field [0001] The invention relates to the technical field of deep-water deposition, in particular to a quantitative characterization method for deltas at the edge of low-stand continental shelves. Background technique [0002] Deep water sedimentation is a hotspot and frontier field of oil and gas exploration and development in the world today, and the study of low stand shelf edge deltas is an important research direction of deep water sedimentation theory. Lowstand domains often develop deep-water fans (slope fans and submarine fans) and shelf-margin delta sedimentary systems at the same time, and shelf-margin deltas have a good indicator effect on deep-water sand-rich systems. The study of lowstand shelf edge deltas not only has rich theoretical significance in sequence stratigraphy and marine sedimentology, but quantitative characterization of them is not only conducive to the identification of sand body development types and distribution rules, but also to dee...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G01V9/00
CPCG06F17/10G01V9/00
Inventor 葛家旺赵晓明马畅廖晋万志峰方小宇
Owner SOUTHWEST PETROLEUM UNIV
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