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Effects of Sample Characteristics, Sample Holding Time, Storage and Preservation on Sample Integrity for Source Rock Analysis
March 2020
Sample characteristics, holding times, storage and preservation in the laboratory have considerable effects on the final results of standard source rock analysis. Results from experiments conducted for variations in the sample holding time in shale rock samples show statistically meaningful changes. The samples that were processed and analyzed within three days show significant S1 and S2 values whereas the same samples analysed after four weeks and subsequently after three months show declining trends. The noted average change in S1, S2 and S3 values ranges between 2-14%, 1-9% and 0-12%, respectively. HI and PI also show lower values, averaging 5.26% and 3.75%, respectively. The samples with high clay content and lower brittleness index show greater decline in the S1 and S2 values, and conversely, low clay content and higher brittleness show less decline. Therefore, more lithified/cemented samples show less variability in SRA results over long holding times. It reflect the feasibility of using the conventionally stored archived samples as proxies for fresh samples for determining the source rock. Research Paper published in SPE-2015 Brisbane.
Electron Probe Microanalysis (EPMA) on Drill Cuttings and Chip Samples
April 2020
As exploration budgets continue to shrink and dependence on indirect methods of geophysical and Geological evaluation increase, coring remains in decline. Given this resource rich companies still understand the importance of coring and/or side wall sampling and analysis to validate wireline data for modelling. Newer techniques are now making their ways into the exploration business. Electron Probe Micro Analysis also known as EPMA one such technique that has wider prospects in geological sciences, particularly in oil and gas, than originally anticipated. EPMA analysis has proven to be very useful when it comes to drill cuttings or chip samples and has the same ability that XRF, XRD and SEM combined. It can also aid in thin section analysis where it assists in deducing the micro-depositional environment for a full characterization of the reservoir rock. It is worth giving a thought on making the use of new technologies such as EPMA, that may, in future unleash its full potential uses beyond what is perceived now.
Porosity Measurements Using Electron Probe Microanalysis (EPMA) On Thin Sections of Drill Cuttings and Chip Samples
May 2020
Drill Cutting Samples are becoming hot bed for many exploration programs as expensive coring and core analysis jobs can be bypassed when the budget for reservoir evaluation is low and calibration of the wireline data is the need of the hour. Although analysis like geochemistry, mineralogy (XRD, XRF and SEM) are quite possible but rock properties especially porosity measurements (type and quantification) possesses challenges. With the new technique of EPMA analysis of blue epoxy impregnated thin sections can be used extensively to overcome this challenge very effectively. We are developing rapid AI and ML software capable of rapid detection of porosity from thin sections.
Data Analytics: Artificial Intelligence and Computational Pathology
June 2020
Coming Soon....
Light Detection and Ranging (LiDAR) for use in Oil & Gas and Civil Engineering Projects
June 2020
Coming Soon....
More to Come..
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