The use of sonic log data to analyse overpressure in the Cooper Basin, South Australia is complicated by the occurrence of Tertiary uplift in the basin. Uplift and overpressure are both associated with anomalous porosity/depth relationships: the former being witnessed by overcompaction and the later by undercompaction. Hence uplift may mask overpressure effects on log data. A normal compaction ...

A mathematical model is developed describing the natural smoldering of logs. It is considered the steady onedimensional propagation of infinitesimally thin fronts of drying, pyrolysis, and char oxidation in a horizontal semi-infinite log. Expressions for the burn rates, distribution profiles of temperature, and positions of the drying, pyrolysis, and smoldering fronts are obtained in terms of t...

Lithofacies classification is a process to identify rock lithology by indirect measurements. Usually, the processed manually an experienced geoscientist. This research presents automated lithofacies using machine learning method increase computational power in shortening process's time consumption. The support vector (SVM) algorithm has been applied successfully Damar field, Indonesia. input va...

Abstract Porosity and facies are two main properties of rock which control the reservoir quality have significant role in petroleum exploration production. Well seismic data most prevalent information for characterization. such as logs prepare adequate vertical resolution but leave a large distance between wells. In comparison, three-dimensional can more detailed characterization inter-well spa...

Abstract Experiment and numerical simulation are integrated to investigate the effects of pore structure on physical properties in reef-shoal carbonate samples from Tarim Basin. The results show three correlation trends between parameters properties, which closely depend type. acoustic velocity fractured-vuggy type (Structure I) is mainly affected by porosity shape, whereas fractured tight type...

The process of evaluating rock mass strength requires that major structural features such as joints influence are considered. In carbonate masses, however, the is largely dependent on intact and play a secondary role. Laboratory experiments porous have shown reduces with increasing porosity, which has direct effect strength. Rock porosity however not been well accounted for in characterization ...

Abstract In this study, we have assessed the petrographical and petrophysical characteristics of progradational, syn-rift Middle Miocene Rahmi sandstone gas reservoir (Lower Kareem Formation) from East Matr Amal hydrocarbon fields, southern Gulf Suez by integrating sidewall cores wireline logs. We interpreted a gradient around 0.09 psi/ft downhole pressure measurements. Based on well log-based ...