Mercury Porosimetry Transition Zone Artifact Correction
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Solution Overview
Problem
Existing mercury porosimetry methods face challenges in accurately characterizing rock samples due to artifacts introduced during pressure zone transitions, which affect the reliability of capillary pressure curves and pore structure analysis.
Innovation Solution
A method and system for processing mercury porosimetry data that identifies and adjusts for transition region artifacts by normalizing data across pressure zones, using computational blocks to define and compute accuracy information and output corrected pressure-volume relationships, thereby enhancing the compatibility of capillary pressure curves with models.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mercury porosimetry measurements are performed across multiple pressure zones, then the measurement range is extended to cover broader pore size distributions, but artifacts are introduced during transition between pressure zones that reduce data accuracy
Solution Approach 1:
The measurement process is divided into multiple pressure zones (first pressure zone and second pressure zone) with distinct measurement ranges. The first pressure zone captures data at lower pressures while the second pressure zone captures data at higher pressures, allowing each zone to be optimized for its specific range while collectively covering the full pore size distribution.
Solution Approach 2:
The system dynamically adjusts measurement parameters during the transition between pressure zones. By computing transition region adjustments based on accuracy information from both zones, the system modifies the pressure-volume relationship data to account for artifacts introduced during zone transitions, thereby maintaining measurement precision across the extended range.
2Reliability
If transition region adjustments are computed based on accuracy information, then the reliability of capillary pressure curves is improved, but the computational complexity and processing time increase
Solution Approach 1:
The system computes accuracy information for both pressure zones before performing the transition region adjustment. By preparing the accuracy data in advance from both zones, the adjustment process can proceed efficiently using pre-computed values, reducing the overall computational burden compared to iterative approaches.
Solution Approach 2:
The transition region adjustment acts as an intermediary computational step that bridges data from the first and second pressure zones. This intermediary process uses accuracy information as a mediator to reconcile differences between zones and eliminate artifacts, providing a systematic way to integrate data across zones without requiring complex iterative optimization.
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
This approach improves the accuracy and reliability of capillary pressure curve analysis by mitigating artifacts, leading to more precise characterization of pore structures and reservoir properties.
Implementation Method 1
pore size may be determined based on pressure readings as the non-wetting liquid is forced into a pore or pores of the material against an opposing force of the liquid's surface tension with respect to the material
Implementation Method 2
porosimetry can involve intrusion of a non-wetting liquid into a material through the use of a porosimeter
Data Source
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AI summary
A method can include receiving porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone and a low-pressure end of a second pressure zone; detecting at least one artifact in the transition zone; computing accuracy information for the highpressure end of a first pressure zone and the low-pressure end of a second pressure zone; computing a pressure-volume adjustment based at least in part on the accuracy information; and outputting a pressure-volume relationship in the transition zone based at least in part on the pressure-volume adjustment.