Drill Pipe Vibration Analysis for Real-Time Geology Detection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing methods for determining geology during large-scale drilling are inadequate, as single cone penetration tests are insufficient for optimizing drilling parameters across multiple holes.

Innovation Solution

Perform sonic drilling with a vibrating drill pipe, convert measured vibrations to the frequency domain using Fourier transformation, and compare the frequency patterns with predefined patterns to determine soil composition, adjusting drilling parameters accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If cone penetration testing is used to determine geology, then geology information can be obtained, but a single test is insufficient for optimizing drilling across multiple holes over large areas

Engineering Contradiction:

Improvegeology determination accuracyVSAvoiddrilling optimization coverage

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The drilling process itself generates vibration data that reveals soil composition information. The drill pipe's natural vibrations during drilling serve as the measurement tool, eliminating the need for separate cone penetration tests and enabling continuous geology determination across all drilling locations.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The drill pipe serves dual functions: performing the drilling operation and simultaneously measuring soil composition through vibration analysis. This multi-functional approach allows geology determination at every drilling location without requiring dedicated testing equipment or additional operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If traditional drilling without real-time geology detection is used, then drilling can proceed, but drilling parameters cannot be optimized based on actual soil composition

Engineering Contradiction:

Improvedrilling efficiencyVSAvoidsoil composition information

Core Design Contradiction:

ProductivityVSLoss of information

Solution Approach 1:

The system continuously measures drill pipe vibrations during drilling, converts them to frequency domain data, compares with reference patterns to identify soil composition, and feeds this information back to adjust drilling parameters in real-time. This closed-loop feedback enables dynamic optimization of drilling efficiency based on actual ground conditions.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces traditional mechanical geology testing methods (cone penetration tests) with a vibration-based measurement system. By analyzing the drill pipe's natural vibrations and their frequency characteristics, the system extracts soil composition information without requiring separate mechanical testing operations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If drilling parameters are adjusted based on operator experience rather than real-time data, then drilling can proceed, but optimization requires high operator experience and is not systematic

Engineering Contradiction:

Improveoperator skill requirementVSAvoiddrilling parameter optimization

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The system automatically determines soil composition and adjusts drilling parameters based on vibration data analysis, eliminating reliance on operator experience. The drill pipe's own vibrations provide the measurement signal, and the system self-optimizes parameters without requiring skilled interpretation by the operator.

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables accurate and efficient adjustment of drilling parameters based on real-time soil composition, reducing operator experience requirements and improving drilling efficiency.

Implementation Method 1

sonic drilling head has vibration means for vibrating the drill pipe... the resonate energy is generated inside the sonic head with two counter-rotating weights called eccentrics... the response of the drill pipe to the resonate energy caused by the vibration means

Methodology Applied

Scientific EffectResonance: Resonance

Implementation Method 2

converting the measured vibrations from the time domain to the frequency domain by applying a Fourier transformation... results in clear distinguishable frequency pattern

Methodology Applied

Scientific EffectFourier transformation:

Data Source

PatentUS20250305414A1Method for Determining Geology While Drilling

Publication Date: 2025.10.02 ROYAL EIJKELKAMP BV

AI summary

A method for determining the geology at a geographical location while drilling is disclosed, which method includes the steps of:performing sonic drilling with a drill pipe, a sonic drilling head, wherein the drill pipe is coupled to the sonic drilling head and wherein the sonic drilling head has vibration means for vibrating the drill pipe;measuring the vibrations of the drill pipe during drilling;converting the measured vibrations from the time domain to the frequency domain by applying a Fourier transformation; anddetermining the soil composition at the momentary drill depth by comparing the frequency pattern from the Fourier transformation with predefined frequency patterns for different soil compositions.