To establish the utmost petroleum absorption saturated in the Hovea-3 well, that is at 1993.82m depth (Graph 46)
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At that depth it has been ascertained that 2 spectra of dissimilar petroleum drenched granite samples were linked to 2 different types ofquartz. This breakthrough has not been investigated further in the scope of this lab report, nonetheless it is surely a substantial topic to explore further in greater depth if the various types of petroleum could be related to the diverse types of quartz (in this scenario can the 2 types of quartz be explicated - eg. LQ and Q). (Figure 21)
After the spectra a through analysis of these samples, it has been concluded that the Hylogger successfully succeeded to characterize the signature that was closely linked and comparable to petroleum particularly dominated by PAHs. The probable hydrocarbon was chosen from the PAH candidates studied earlier in the preceding lab report, depending on the number matching spectral distinctiveness. Perylene was the picked HC owing to the arrangement and the deepness of the features that finely matched with the spectra of the preceding studies, and as a consequence apt candidate perylene was opted for the sufficient dominant compound. This data was virtually checked by extraction of spectra from the practiced HyLogging data and comparison of the identified spectra to find out standards of the preceding experiments. The TSG software permitted input of unknown spectrum, however in order to pick up analytical assimilation features from the PHC principles, manual effort was required. Spectral records of formerly acknowledged PHCs spectra are not accessible yet to conclude which PHC signatures have analogous spectral distinctiveness. This would be easily resolved if the understanding of correctness and accuracy of the evaluation was achieved to find out the overall significance of the signatures for distinguishing changes in reflectance. A model was constructed in chapter 2 to categorize petroleum in dissimilar groups of PHCs. analytical peaks and assimilation features were picked to obtain a score of data points for the crests at the wavelength positions appropriate to make classification of saturated petroleum in core dependable.
As earlier established, the 2 samples cited in graph 47 were situated on the exterior of the P/T boundary; it was awfully remarkable to see if the HLogger managed to differentiate dissimilar HCs in the class of PAHs. In fact, the HL succeeded to do so. There was entirely a difference amid the spectral signatures of spectra on the exterior of the boundary, from the Triassic deepness (close to boundary), and the Permian distance downward (close to PTB). (Graphs 50, 51 and 47)
The Triassic drenched granite Hovea-3 Sample depicted a signature more distinguished as isorenieratane (or perylene) in the analysis of the deep assimilation depths at 409nm and at 1200nm. Still the assimilation depth was deeper and increased for the Triassic sample compared to the Permian sample, which implies that the petroleum at the PTB in proximity to the Triassic definitely contains likely prevailing isorenieratane compounds compared to the samples in proximity to the Permian depths, due to a higher boost of the absorption characteristic at the 1200nm point. (Graphs 50 & 51).
perylene was related to isorenieratane.
(In the 2 ‘Normal HullQuotient’ graphs (47 and 48), it was established that the spectrum of each perylene was absolutely present in the Hovea-3 drillcore. The resemblance of both spectra depicted simmilar absorption characteristics at the range of 400-500nm (extremely deep, implies great absorption for individual capacity of perylene), 2 assimilations at 1140nm (less exaggerated in Hovea nucleus) and 1188nm
The signature of the drenched Hovea core had a minor peak-swing to the right that was ranging from 1678 to 1730nm, which has been practical in Graph 49. This was not perylene but a different PAH (equally linked to carotenoids) such as isorenieratene. Thus it is evident how perylene was related to Isorenieratane.
The Main conclusions are:
The HL was successful in detecting PAH, the one linked to perylene in particular, isorenieratane, but this required further investigation
The HL was able to make a distinction between the dissimilar hydrocarbons in the part of PTB of Hovea-3 drill fissure
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