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Method for determining ancient wind direction through distribution rule of oolitic beaches on carbonate rock platform

A carbonate rock, distribution law technology, applied in the direction of material analysis, analysis materials, instruments, etc. by optical means, can solve problems such as inapplicability, the main factors of sediment are far different, and carbonate rocks are not suitable.

Pending Publication Date: 2021-04-23
XINJIANG UNIVERSITY
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Problems solved by technology

[0005] Disadvantage 1: What is restored is the ancient wind power, not the ancient wind direction
[0006] Disadvantage 2: This scheme is mainly based on lacustrine sediments. Since the coast and the lakeshore are very different, and the main factors affecting sediments are also far away, this technical scheme is not suitable for coastal platforms
[0007] Disadvantage 3: This solution is mainly for the analysis of clastic rocks, and carbonate rocks are not applicable
[0010] Disadvantage 1: This scheme needs to use a variety of geophysical methods, such as seismic prospecting, electrical prospecting, gravity prospecting, magnetic prospecting, geophysical logging and radioactive prospecting, etc., and then analyze, process, and Inversion, interpretation, and mainly for clastic rocks, not suitable for carbonate rocks
[0011] Disadvantage 2: This scheme is mainly applicable to the sedimentary system controlled by the "wind-source-basin" three-end member system, and it is mainly based on strong provenance. Be applicable

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  • Method for determining ancient wind direction through distribution rule of oolitic beaches on carbonate rock platform
  • Method for determining ancient wind direction through distribution rule of oolitic beaches on carbonate rock platform
  • Method for determining ancient wind direction through distribution rule of oolitic beaches on carbonate rock platform

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Embodiment Construction

[0075] The specific technical solutions of the present invention are described in conjunction with the accompanying drawings. The flow of the method for determining the paleowind direction based on the distribution of oolitic shoals on carbonate platforms is as follows: figure 1 shown, including the following steps:

[0076] Step 1: Determine the study area and horizon

[0077] The Shaanxi-Gansu-Ningxia carbonate platform in the study area is located in northern China, covering parts of Gansu, Ningxia, Shanxi, Inner Mongolia, Shaanxi and other provinces ( figure 2 Middle A), the total area of ​​the basin is about 37×10 2 km 2 . The Shaanxi-Gansu-Ningxia carbonate platform is mainly located in the craton plate ( figure 2 Middle B). During the Cambrian period, the North China Craton had a warm climate from tropical to subtropical ( figure 2 Middle A-B; Zhang Guoren, 1997; Chen and Lee, 2013; Wang et al., 2019). The Lower Cambrian is mainly composed of hematite-bearing...

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Abstract

The invention provides a method for determining the ancient wind direction through the distribution rule of oolitic beaches on a carbonate rock platform, which mainly aims at the recovery of the ancient wind direction during simultaneous deposition of the ancient carbonate rock platform, and comprises the steps of in a research area, determining the rock type according to field outcrop, drilling rock core and slice observation and identification, analyzing a deposition system, and collecting and concluding oolitic parameters, wherein oolitic parameters mainly include the thickness of a single layer, the size of oolites, oolitic sorting and the type of cement; obtaining the distribution rule of oolitic beaches in the area; and finally analyzing and determining the ancient wind direction of the carbonate rock platform by taking sedimentology as a guidance theory. According to the method, an effective method is provided for recovering the ancient wind direction of the carbonate rock platform, and meanwhile, a powerful parameter is provided for carbonate rock oil and gas exploration.

Description

technical field [0001] The invention belongs to the technical field of carbonate rock platform exploration, and in particular relates to a method for determining the paleowind direction through the distribution law of oolitic shoals in the carbonate rock platform. Background technique [0002] Carbonate platform has always been a hot spot of research and exploration by scholars at home and abroad. From a global perspective, the oil and gas reserves in carbonate reservoirs account for about 40% of the total oil and gas reserves, and the production accounts for about 60% of the total oil and gas production (Roehl, 1985). Moreover, carbonate reservoirs have the characteristics of wide distribution, uniform and stable thickness, and good physical properties, and have become important reservoirs and production layers of oil and gas. However, due to the complexity of carbonate rock formation and the influence of current exploration technology, the understanding of carbonate rock ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84
CPCG01N21/84
Inventor 胡晨林韩长城田继军唐雅妮
Owner XINJIANG UNIVERSITY
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