Igneous rock lithology identification method and device

A technology of lithology identification and igneous rock, which is applied in the field of lithology identification, can solve the problems of high cost and difficult popularization, and achieve the effect of low identification cost and improved accuracy

Inactive Publication Date: 2018-12-07
PETROCHINA CO LTD
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Problems solved by technology

With the wide application of imaging logging and element logging technology, it is possible to establish corresponding identification charts by identifying the mineral composition, structure, and structure of rocks, which can greatly improve the interpretation accuracy of logging lithology identification. High cost and difficult to popularize

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  • Igneous rock lithology identification method and device
  • Igneous rock lithology identification method and device
  • Igneous rock lithology identification method and device

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Embodiment Construction

[0049] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. For example, in the following description, forming the second component above the first component may include an embodiment in which the first component and the second component are formed in direct contact, and may also include an embodiment in which the first component and the second component are formed in indirect contact ( That is, the...

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Abstract

The embodiment of the invention provides an igneous rock lithology identification method and device. The method comprises the steps of: identifying igneous rocks based on a crossplot method; for lavawhich cannot be identified in the igneous rocks based on the crossplot method, obtaining a logging curve of the lava; converting the logging curve to an intrinsic modal function set; determining the experience modal energy entropy of the logging curve corresponding to each intrinsic modal function in the intrinsic modal function set; and processing the experience modal energy entropies based on apreset sorting algorithm to obtain a lithology identification result of the lava. The igneous rock lithology identification method and device can improve the igneous rock lithology identification precision and can reduce the identification cost.

Description

technical field [0001] The present application relates to lithology identification technology in the field of petroleum exploration and development, in particular to a method and device for igneous rock lithology identification. Background technique [0002] Lithology identification of igneous rocks is the basis for reservoir evaluation of igneous rock reservoirs. Because igneous rock reservoirs have the characteristics of "diversified eruption patterns, lithological origins, and mineral assemblages", it is difficult to accurately identify lithology, which greatly restricts the calculation of reservoir parameters and subsequent oil and gas development. [0003] At present, the most widely used lithology identification method is to use conventional logging responses and mechanical parameters to make crossplots, but the information reflected by the simple crossplot method is limited, and the identification accuracy needs to be improved. With the wide application of imaging lo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
Inventor 韩玉娇周灿灿范宜仁葛新民李潮流范卓颖俞军徐红军胡法龙刘忠华袁超李霞程相志
Owner PETROCHINA CO LTD
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