Geosteering Model Using Geological Structure Lines
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Solution Overview
Problem
Existing geosteering methods suffer from inaccurate steering, leading to a low reservoir penetration rate in oil and gas reservoirs, which cannot meet the efficiency requirements for oil and gas reservoir exploitation.
Innovation Solution
A geosteering method that involves acquiring first well trajectory information and geological information of a target well, determining geological structure lines of different geological layers using a steering profile, and forming a geosteering model to perform precise geosteering during actual drilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing geosteering methods are used to establish a geosteering model based on reference well geological information, then the geosteering process can be completed, but the steering accuracy is insufficient resulting in low reservoir penetration rate
Solution Approach 1:
The patent performs preliminary geological structure analysis by determining geological structure lines of different geological layers before establishing the geosteering model. This preliminary action includes acquiring well trajectory information, determining steering profiles, and analyzing geological structures in advance, which improves the accuracy of the subsequent geosteering model and enhances reservoir penetration rate.
Solution Approach 2:
The patent introduces a new dimension of geological structure analysis by determining geological structure lines on steering profiles. This transforms the traditional 2D well trajectory analysis into a 3D geological structure-aware geosteering model, allowing for more accurate prediction of wellbore trajectory relative to geological layers and improving both steering accuracy and reservoir penetration rate.
2Measurement precision
If traditional geosteering modeling is performed without detailed geological structure analysis, then the modeling process is simpler, but the steering accuracy deteriorates
Solution Approach 1:
The patent segments the geological modeling process into distinct steps: acquiring well trajectory information, determining steering profiles, determining geological structure lines for different geological layers, and integrating these into the geosteering model. This segmentation makes the complex modeling process more manageable and systematic, improving steering accuracy without overwhelming complexity.
Solution Approach 2:
The patent performs preliminary determination of geological structure lines and steering profiles before final model integration. This preliminary action organizes the complex data and analysis into structured components, making the overall modeling process more efficient and accurate while maintaining manageable complexity through systematic preparation.
Data Source
AI summary
A geosteering method and apparatus, and a storage medium, where the method includes: acquiring first well trajectory information of a target well, and first geological information and second geological information of the target well; determining, by using a plane where a first well trajectory is located as a steering profile, a geological structure line of a first class geological layer corresponding to the first geological information on the steering profile, and determining, by using the geological structure line of the first class geological layer as a reference and based on the second geological information, a geological structure line of a second class geological layer corresponding to the second geological information on the steering profile, so as to obtain a geosteering model of the target well; and using the geosteering model to perform geosteering on actual drilling of the target well.