Seismic Data Calibration Using Absolute Source Strength and Receiver Sensitivity
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Solution Overview
Problem
Current seismic data processing methods fail to utilize absolute amplitude information from seismic sources and receivers, leading to non-quantitative interpretations and lack of accuracy in reservoir monitoring.
Innovation Solution
Calibration of seismic data using absolute strength of the seismic source and sensitivity of the seismic receiver, allowing for quantitative analysis and representation of reflectivity, eliminating the need for well log information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional seismic data processing methods are used, then the processing can be completed, but the interpretation remains non-quantitative and lacks accuracy
Solution Approach 1:
The patent applies preliminary action by calibrating the seismic data with absolute source strength and receiver sensitivity information before processing. This pre-calibration step ensures that amplitude information is preserved and quantified throughout the entire processing workflow, enabling quantitative interpretation from the outset rather than attempting to recover it later.
Solution Approach 2:
The patent changes the parameter state of the seismic data by introducing absolute amplitude calibration parameters (source strength and receiver sensitivity). This transforms the data from relative, non-quantitative measurements to absolute, quantitative values that can be directly interpreted in physical terms, resolving the loss of amplitude information.
2Measurement precision
If absolute strength and sensitivity calibration is applied, then quantitative analysis is achieved, but the processing complexity increases
Solution Approach 1:
The patent applies self-service by using the seismic source and receiver themselves to provide the calibration information needed. The absolute strength of the source and sensitivity of the receiver are determined from the seismic data acquisition process itself, rather than requiring separate external calibration equipment or procedures, thus managing complexity while achieving quantitative accuracy.
3Manufacturing precision
If traditional processing methods are used, then processing time is reduced, but resolution and accuracy of velocity models deteriorate
Solution Approach 1:
By performing absolute calibration before velocity model building, the patent enables more efficient processing later. The pre-established quantitative framework allows for faster, more accurate velocity model construction without requiring iterative corrections, ultimately improving both accuracy and turnaround time compared to traditional methods.
Data Source
AI summary
The present disclosure is related to absolute strength and absolute sensitivity in seismic data. Seismic data from a marine survey can be received. The seismic data can be calibrated based on an absolute strength of a seismic source and an absolute sensitivity of a seismic receiver. The calibrated seismic data can be processed.