Drill String Coupling Measurement Device for Drilling Parameter Monitoring
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Solution Overview
Problem
Existing drilling and coring measurement devices are prone to discrepancies due to local deformations in the drill string, are not standard, and complicate mass production, making them costly and difficult to position accurately near the drillbit.
Innovation Solution
A compact, autonomous measurement device housed in a coupling between drill string pipes or the drillbit and a drill string pipe, equipped with standard measurement equipment like accelerometers, magnetometers, and strain gauges, allowing for precise monitoring of drilling parameters without being disturbed by drill string deformations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If measurement gauges are placed in the upper portion of the drill string, then the device complexity is reduced, but measurement precision deteriorates due to local deformations in the lower portion of the drill string
Solution Approach 1:
Instead of placing measurement gauges in the upper portion of the drill string (conventional approach), the invention inverts the arrangement by positioning the measurement device in the lower portion, specifically in a coupling between drill string pipes or between the drillbit and a drill string pipe. This inversion allows direct measurement of drilling parameters at the source, eliminating errors introduced by drill string deformations during transmission of measurements upward.
2Measurement precision
If non-standard measurement equipment is used to achieve accurate measurements, then measurement precision is improved, but ease of manufacture deteriorates and device complexity increases
Solution Approach 1:
The invention employs universal, standard measurement gauges that can be used across multiple drilling operations and drill strings. The measurement device in a coupling houses standard accelerometers, magnetometers, and strain gauges that are commercially available and can be mass-produced. This universality maintains measurement precision while enabling ease of manufacture and cost-effective deployment.
Solution Approach 2:
The invention uses standard, off-the-shelf measurement components rather than custom-designed gauges. These standard components can be copied and reproduced through mass production, eliminating the need for complex custom manufacturing processes while maintaining adequate measurement precision for drilling operations.
3Measurement precision
If measurement equipment is placed in the immediate vicinity of the drillbit, then measurement precision is improved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The invention merges the measurement device with the coupling structure that already exists in the drill string. Rather than adding a separate, complex measurement apparatus, the device is integrated into the coupling between drill string pipes or between the drillbit and a drill string pipe. This merging approach positions measurement equipment in the immediate vicinity of the drillbit for high precision while utilizing the existing coupling structure to minimize overall device complexity.
4Ease of manufacture
If standard measurement gauges are used, then ease of manufacture is improved, but measurement precision deteriorates when positioned away from the drillbit
Solution Approach 1:
The invention inverts the conventional arrangement by placing standard measurement gauges in the lower portion of the drill string, specifically in a coupling near the drillbit, rather than in the upper portion. This inversion allows standard, easily manufactured gauges to capture drilling parameters directly at the source, maintaining both ease of manufacture through standard components and high measurement precision through proximity to the drilling action.
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, real-time monitoring of drilling parameters with minimal disruption, facilitating mass production and reducing costs by positioning the device close to the drillbit, thus improving measurement reliability and adaptability.
Implementation Method 1
a drillbit whose cutting head contains accelerometers judicially distributed so as to determine the vibrations to which it is adapterjected during a drilling operation
Implementation Method 2
equipped with standard measurement equipment like accelerometers, magnetometers, and strain gauges
Implementation Method 3
equipped with standard measurement equipment like accelerometers, magnetometers, and strain gauges
Data Source
AI summary
Device comprising equipment for measuring parameters of a drilling or coring operation by means of a drillbit fixed to the end of a drill string, measurement equipment (7) being housed in a chamber (5) made in a coupling (1, 18) that is designed to be interposed between two drill string pipes or between the drillbit and a drill string pipe, or to constitute an adapter (18) for a cutting head (15) of the drillbit of a drill string.