Data are being continuously generated from various operational steps in the oil and gas
industry. The recordings of these data and their proper utilization have become a major …

Identification and prediction of facies and fractures are critical to subsurface geosystems
analysis and hydrocarbon exploration. However, accurate prediction of facies and fractures …

Abstract In the East Baghdad oilfield of central Iraq, the Upper Cretaceous Khasib Formation
is the largest producing carbonate reservoir. The basic architecture of the “Khasib …

Swab and surge pressure fluctuations are decisive during drilling for oil. The axial
movement of the pipe in the wellbore causes pressure fluctuations in wellbore fluid; these …

Data-driven methods serve as robust tools to turn data into knowledge. Historical data
generally has not been used in an effective way in analyzing processes due to lack of a well …

As an important unconventional oil and gas resource, the tight gas reservoir faces many
technical challenges due to its low porosity, low permeability, and strong heterogeneity …

The main objective of net pay determination, as an important step of any reservoir study, is to
exclude non-reservoir intervals so that better results are obtained from reservoir …

This paper is concerned with the applicability of different strategies to improve the definition
of prior probabilities and/or likelihoods of naïve Bayes (NB) classifiers. Standard NB method …

Determining productive zones has always been a challenge for petrophysicists. On the other
hand, Artificial Neural Networks are powerful tools in solving identification problems. In this …

Petrophysical cutoffs of a hydrocarbon reservoir are among the key parameters to determine
net pay, net-to-gross ratio (NTG), original hydrocarbon (s) in place (OHIP), and reserves …