Method for finely recovering karst topography

A technology of paleogeomorphology and karst, applied in the field of fine restoration of karst paleogeomorphology, can solve problems such as waste of manpower and material resources, and errors in paleogeomorphology restoration work, and achieve the effect of complete restoration work, high restoration accuracy, and low cost

Pending Publication Date: 2017-09-15
RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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Problems solved by technology

At present, the commonly used paleogeomorphological restoration methods mainly include residual thickness and compensated thickness impression method, stripping back filling and leveling method, etc. These methods will waste a lot of manpower and material resources in the actual use process, and the restoration of paleogeomorphology There is considerable error

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  • Method for finely recovering karst topography

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Embodiment Construction

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] see figure 1 , the present invention provides a technical solution: a method for finely restoring karst ancient landforms. The specific steps of the method for finely restoring karst ancient landforms are as follows:

[0020] S1: Find a relatively accurate sedimentary boundary representing the paleosea level in the overlying strata of the ancient weathering crust. The boundary must meet the following conditions:

[0021] ① It must be an isochronous int...

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Abstract

The invention discloses a method for finely restoring karst paleogeomorphology in the technical field of paleogeomorphology restoration. The specific steps of the method for finely restoring karst paleogeomorphology are as follows: S1: Find a relatively accurate representative paleosea in the overlying stratum of ancient weathering crust Plane stratigraphic depositional interface; S2: Obtain the relative height of the topography on the weathering crust through the stratum thickness between the depositional interface and the weathering crust; S3: Use the method of high-resolution sequence stratigraphy to calculate the relative height of the topography in step S2 S4: Construct the seismic profile; S5: Analyze the seismic profile features on the seismic profile, and restore the karst ancient landform. The restoration image of the karst ancient landform in the present invention is intuitive and realistic, with low cost and easy Realized that the restoration of ancient landforms is relatively complete, and at the same time, the impact of the later structure of the landforms is considered, and the restoration accuracy is high.

Description

technical field [0001] The invention relates to the technical field of paleogeomorphology restoration, in particular to a method for finely restoring karst paleogeomorphology. Background technique [0002] Paleogeomorphology is the dominant factor controlling the development and distribution of sedimentary facies in the basin, and the structural type and superposition pattern of sequence stratigraphic units are controlled by the change of base level cycle. Paleogeomorphology plays an important role in controlling the formation and development of sequences and the distribution of reservoirs. The restoration of paleogeomorphology can help to identify the development and distribution characteristics of reservoirs, determine the paleogeographical environment, paleontological distribution, and structural evolution characteristics. Different geomorphic units have different paleohydrodynamic conditions, which in turn determine the difference in karst development and the degree of l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 吴海燕曹红霞尚婷强娟高飞刘鹏武渝张毅
Owner RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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