Bedding structure recognition method and system
A bedding structure and data technology, which is applied in the field of bedding structure identification methods and systems, and can solve the problems of single identification technology and low reliability.
Active Publication Date: 2012-08-01
CHINA NAT OFFSHORE OIL CORP +1
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[0004] The technical problem to be solved by the present invention is to overcome the defect that the current recognition technology of bedding structure is single and has low reliability.
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[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.
[0026] The cost of drilling in offshore oilfields is high and the number of cores taken is less, and the sedimentary bedding structure information of the formation cannot be obtained. Sedimentary bedding structure is one of the core contents of sedimentology research, especially in the analysis of sedimentary facies, which can indicate the provenance direction and paleoflow direction information of sand body deposition. The embodiments of the present invention combine well logging data with geological theories to establish a comprehensive identification model for common beddi...
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The invention discloses bedding structure recognition method and system, which overcome the defects that the traditional bedding structure recognition technology is single and has low reliability. The method comprises the following steps of: obtaining the lamina form combinations of outcrop or core data and the relationship between the lamina and the bed series interface to determine the bedding structure type; obtaining line form combinations in an imaging data image corresponding to the outcrop or core data, and determining the line form combination characteristics of different bedding structure types in the imaging data image; obtaining the inclination angle vector mode reflected by inclination angles and inclination degrees in the inclination degree data corresponding to the outcrop or core data, and determining the inclination degree vector characteristics of different bedding structure types; determining the bedding structure mode according to the line form combination characteristics and the inclination degree vector characteristics of different bedding structure types in the imaging data image by combining the formation cause mechanism of bedding deposition and the lithological type. The invention can provide a basis for the application of imaging and well logging technique and the like.
Description
technical field [0001] The invention relates to a bedding structure identification technology, in particular to a bedding structure identification method and system. Background technique [0002] Bedding is a layered structure formed in a layer when sediments are deposited, and the elements that make up bedding include laminae and strata. At present, the identification of bedding structure is mainly based on the observation and identification of phenomena in outcrops or core objects in geology, and it is mainly based on imaging logging image patterns or dip logging vector patterns in well logging. [0003] At present, the identification methods of the two layer structures have certain limitations. For downhole formations, it is difficult to obtain sedimentary bedding structures without cores, and it is impossible to orient the cores even if there are cores. Using logging data to identify bedding structures, and because of the lack of bedding geological models to support, t...
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IPC IPC(8): G01V9/00
Inventor 杨玉卿崔维平张聪慧
Owner CHINA NAT OFFSHORE OIL CORP