Method and system for quantitatively predicting plane distribution and width-to-thickness ratio of main stream line of river channel
Through the grid research area and combining sedimentary principles and seismic reflection characteristics, the phased sand body structure method is used to quantitatively predict the main streamline and width-thickness ratio of the river channel, which solves the problem of low prediction accuracy of river channel trends and high-quality sand body distribution in the existing technology, and achieves a relatively accurate prediction effect.
CN119720318AActive Publication Date: 2025-03-28PETROCHINA CO LTD
7 Cites 0 Cited by
Patent Information
- Application Number
- CN202311254901.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-26
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2043-09-26
AI Technical Summary
Technical Problem
The prior art has problems such as low accuracy, strong multi-solvency and inability to meet actual needs in predicting river trends and distribution of high-quality sand bodies.
Method used
Through the grid research area, a geological model is established based on the principles of sedimentation, combined with the seismic reflection characteristics, and a phased sand body structure method is used to quantitatively predict the main stream line and width-thickness ratio of the river channel.
Benefits of technology
Relatively accurate prediction of the trend of dominant sand bodies in river channels during the single sedimentary period is achieved, the prediction accuracy is improved, and uncertainty caused by human factors is reduced.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a method and system for quantitatively predicting the plane distribution and width-to-thickness ratio of a main stream line of a river channel, and relates to the technical field of petroleum geological exploration reservoir prediction, and the method comprises the steps: S1, carrying out the meshing according to the size of a research area and drilling data; s2, dividing a target stratum in the research area into single sand bodies or sand groups; s3, the single sand bodies or the sand groups are classified according to a phase control sand body structure method; s4, setting a research area material source starting point according to the large area material source direction, and performing river main stream line plane quantitative prediction on the basis of the single grid mathematical model; s5, calculating the width-to-thickness ratio data of the river channel in the research area, and obtaining a mathematical model of the width-to-thickness ratio of the river channel main body; s6, determining the width and trend of a river channel main body; and S7, after the river main body is determined, quantitatively depicting river side wing and overflow phase envelope lines, and completing river main flow line plane prediction. According to the method, the trend of the dominant sand bodies of the river in the single deposition period is relatively accurately predicted, and the purpose of predicting the high-quality sand bodies of the river is achieved.
Need to check novelty before this filing date? Find Prior Art