Well leakage prediction method with seismic data
A technology of seismic data and prediction method, which is applied in the directions of surveying, earthwork drilling and production, wellbore/well components, etc. It can solve problems such as leakage channels, formation pressure deficit, pressure excitation, etc., achieve accuracy and efficiency improvement, and identification accuracy Effect of improvement, efficiency improvement of recognition
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0042] Example 1
[0043] As a preferred embodiment of the present invention, it discloses a method for prediction of lost circulation from seismic data, the steps of which are:
[0044] a. High-resolution processing: processing conventional lower-resolution seismic data into high-resolution data;
[0045] b. Fine horizon comparison: Accurately pick up the seismic horizon according to the usual seismic horizon comparison technology;
[0046] c. Automatic recognition of folds: obtain the curvature of the stratum along the seismic horizon, find folds, and judge the positive or negative curvature at the same time;
[0047] d. Judgment of fold properties: judge whether it is an anticline or syncline according to the positive or negative change of curvature;
[0048] e. Extract the amplitude difference: calculate the amplitude difference in all directions within the range of the target layer based on the center of the slight fold;
[0049] f. Calculate the amount of slight wrinkles: comprehens...
Example Embodiment
[0056] Example 2
[0057] Reference figure 1 As the best embodiment of the present invention, the steps are:
[0058] a. High-resolution processing: processing conventional lower-resolution seismic data into high-resolution data; if the resolution of the seismic data is already high, this step can be ignored. The high-resolution processing method is arbitrary, but the resolution There should be a significant improvement.
[0059] b. Fine horizon comparison: Accurately pick up seismic horizons according to the usual seismic horizon comparison technology; the picked seismic horizons should be on the same reflection feature point or geological interface, and the reflection feature points are wave crests or troughs.
[0060] c. Automatic recognition of folds: obtain the curvature of the stratum along the seismic horizon, find folds, and judge the positive or negative curvature at the same time;
[0061] d. Judgment of fold properties: judge whether it is an anticline or a syncline accordin...
Example Embodiment
[0069] Example 3
[0070] Specific application examples: Refer to 2 and 3 to clarify the principles of specific calculation methods.
[0071] figure 2 It contains an anticline and a syncline, just take an anticline as an example. Determine the center of the formation, and the thickness of the formation (the length of the time window when the seismic profile is in the time domain) is the range between the top and bottom of the formation. According to the horizon data picked up from the stratum center, the curvature can be calculated, the folds can be found, and the positive and negative of the curvature (anisotropic and syncline properties) can be obtained, and the seismic trace—the central trace—where the core of the fold and the center of the fold is located can be determined. Calculate the amplitude difference on both sides of the center track point by point. In actual calculations, it is also based on image 3 Calculate the amplitude difference between the multiple channels i...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap