Intelligent drawing method and system of sedimentary facies map for oilfield exploration and development

Abstract

The embodiment of the present invention discloses a method of intelligently drawing a sedimentary face map facing the oilfield exploration and development, and a system of intelligently drawing the sedimentary face map facing the oilfield exploration and development. The method comprises the steps of obtaining the coordinate of a well point and a face value corresponding to the coordinate, and rotating and compressing the coordinate of the well point according to the flow direction of a riverway and the communication degree to generate a single well face plane distribution map; in the single well face plane distribution map, carrying out a Delauney triangulation with constraint on the well point to generate a main communication line and an auxiliary communication line; tracking a boundary along the auxiliary communication line of each face to generate a boundary polygon corresponding to each face; curving the boundary polygon corresponding to each face to generate a corresponding phase spread boundary; transforming the coordinate of the single well face plane distribution map with the phase spread boundary into an initial coordinate, and generating the corresponding sedimentary face map.

Description

technical field [0001] The invention relates to the field of petroleum exploration, in particular to an intelligent drawing method and system for sedimentary facies diagrams oriented to oilfield exploration and development. Background technique [0002] In the process of oilfield geological modeling, modeling sedimentary facies is a very important step. In practice, modeling of sedimentary facies is carried out as follows: [0003] 1. Analyze the logging curves, determine the paleo-sedimentary environment of the entire block, and divide the strata; [0004] 2. Determination of sedimentary facies on the log curve after layering; [0005] 3. Combining the analysis data of all well logs, for each formation, draw a sedimentary facies map according to the sedimentary facies of all logging positions in the formation. [0006] In oilfield field work, the existing method of drawing sedimentary facies maps is often carried out by manual hand drawing, so the efficiency is low, edit...

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Problems solved by technology

However, there are still some disadvantages as follows: using indicator kriging interpolation will result in bad shape of the facies zone, this method cannot guarantee the width of the channel, and there will be isolated facies zones in areas without well point control; Phase sequence constraints in the junction area; this method is basically difficult to edit because it is a one-time mapping

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