CSEM Data Interpretation Software for Hydrocarbon Detection

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Solution Overview

Problem

Interpreting controlled-source electromagnetic (CSEM) survey data for hydrocarbon exploration is complex due to large datasets, varying processing methods, and the need for integrated tools that manage and display both actual and synthetic data effectively, often lacking in existing technologies.

Innovation Solution

A computer-implemented method with a graphical user interface for interpreting CSEM data, providing data manipulation and display tools, layered data storage for frequency-domain electromagnetic field data, and software features for managing and selecting actual and synthetic data to predict subsurface hydrocarbon presence.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If CSEM survey data is collected with multiple receivers, frequencies, and components to improve measurement precision, then the quantity of data increases significantly, but the complexity of data management and interpretation increases

Engineering Contradiction:
Improveresistivity mapping precisionVSAvoiddata management complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the large CSEM dataset into multiple manageable components organized in a hierarchical file structure. Data is divided by survey line, receiver, frequency, and field component, with each segment stored in separate files within organized directories. This segmentation allows interpreters to work with specific subsets of data without being overwhelmed by the complete dataset, directly addressing the complexity issue while preserving measurement precision through systematic organization of all data elements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces a new organizational dimension by creating a multi-level hierarchical file structure that adds layers of abstraction between the raw data and the interpreter. This structure organizes data across multiple dimensions (survey line, receiver, frequency, component) and provides automated indexing and cross-referencing systems that navigate this multi-dimensional space, transforming the management of complex multi-dimensional CSEM data into a systematic process.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Measurement precision

If multiple processing methods are applied to improve data quality, then measurement precision improves, but the number of synthetic data sets increases, creating bookkeeping challenges

Engineering Contradiction:
Improvesignal qualityVSAvoiddata tracking information
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The patent implements automated feedback mechanisms that track and document each processing step applied to the CSEM data. The system maintains processing logs that record which synthetic datasets were generated, what processing methods were applied, and how they relate to the original measured data. This feedback system automatically updates metadata and cross-references, ensuring that interpreters can trace the complete processing history without manual bookkeeping, thus preventing information loss while enabling multiple processing iterations.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent introduces an intermediary processing management system that acts as a mediator between the multiple processing methods and the final interpretation. This intermediary layer automatically generates, organizes, and cross-references synthetic datasets, maintaining a systematic record of all processing operations. It serves as an intermediary database that links measured data, processing parameters, and resulting synthetic datasets, eliminating the need for manual tracking while preserving complete information about data transformations.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Measurement precision

If comprehensive CSEM survey data is collected to improve hydrocarbon detection accuracy, then measurement precision improves, but the time required for data interpretation increases

Engineering Contradiction:
Improvehydrocarbon detection accuracyVSAvoidinterpretation time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent applies preliminary action by automatically organizing and pre-processing CSEM data during the acquisition phase. The system performs initial data sorting, quality assessment, and metadata generation immediately upon data collection, preparing the data in an interpretation-ready format before the interpreter begins analysis. This preliminary organization of comprehensive datasets reduces the time required for subsequent interpretation while maintaining full detection accuracy by preserving all necessary data elements in an accessible structure.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent replaces manual data management mechanics with automated computational systems. The system automatically sorts, organizes, indexes, and cross-references comprehensive CSEM datasets without manual intervention, substituting mechanical bookkeeping processes with automated software operations. This substitution dramatically reduces interpretation time for large datasets while maintaining detection accuracy by ensuring systematic and error-free data organization and retrieval.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8027790B2Interpretation and mapping of electromagnetic survey data
Publication Date: 2011.09.27 EXXONMOBIL UPSTREAM RESEARCH COMPANY(US)
  • US8027790B2 patent drawing
  • US8027790B2 patent drawing
  • US8027790B2 patent drawing

AI summary

A structured computer-implemented method (1000) based on graphical user interfaces for interpretation and mapping of data from a controlled-source electromagnetic survey, featuring capability to store electromagnetic data in layers (1004), each layer having the same internal structure for ease of comparison, editing, display and other manipulation by an assortment of software tools (1005) useful to an interpreter. Thus, different layers might contain actual data (1001) from different surveys and simulated results (1002) based on different resistivity models or inversion results (1003), all pertaining to the same subterranean survey region.