A method and device for determining a petroleum logging standard layer

Abstract

The invention provides a method and device for determining a petroleum logging standard layer. The method includes the steps of obtaining logging data, coring data and mud logging data of all well holes in a research work area, determining the lithological layer section sequence of the research work area according to the coring data and the mud logging data of all the well holes, determining lithological layer section data in all the well holes according to the logging data and the lithological layer section sequence, determining the standard layer scores of all layer sections in all the well holes according to a preset layer section standard layer score algorithm and the determined lithological layer section data, and determining the standard layer of the research work area according to the determined standard layer scores of all the layer sections in all the well holes. By means of the method, all threshold value parameters can be adjusted, and therefore the standard layer is quantified and explicit in the screening process, a user can be conveniently and rapidly assisted in determining the standard layer sections in a computer program.

Description

technical field [0001] The invention relates to petroleum exploration technology, in particular to petroleum exploration well logging technology, specifically a method and device for determining a petroleum logging standard layer. Background technique [0002] Petroleum logging technology is an important method for qualitative and quantitative evaluation of oil and gas reservoirs. In the field of reservoir simulation, determining standard layers is an important step in the process of standardizing multi-well data. In order to eliminate the scale difference between logging data from different instrument types, different logging periods, and different measurement operation methods, it is necessary to select a certain lithology formation of the same layer in the study area as a standard layer, and to measure the formation of this layer in each well. The well logging data is comprehensively analyzed and a standardization plan is formulated to correct the error caused by the inco...

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Problems solved by technology

[0004] However, because the basis for selecting the standard layer in the prior art is not a quantitative parameter index similar to "thickness > 10 meters", but a descriptive statement such as "moderate thickness", oil logging software generally does not support the standard layer. Intelligent selection requires logging engineers to make independent judgments, so the selection results of standard layers in this process have certain randomness due to different decision makers

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