Natural gas is expected to play an important role in the coming low-carbon energy transition.
However, conventional gas resources are gradually being replaced by unconventional ones …

Abstract Iron sulfide is a $1.4 billion/year problem in the oil and gas industry receiving little
R&D attention. The low success rate of organic acids and polyaminocarboxylic acids (PACA) …

Oil production by natural energy of the reservoir is usually the first choice for oil reservoir
development. Conversely, to effectively develop tight oil reservoir is challenging due to its …

The main characteristic of the complicated carbonate reservoirs is notably strong
heterogeneous, leading to a high uncertainty in formation parameter evaluation. The most …

Iron sulfide scales of different forms exist in sour oil/gas producing wells as well as seawater
injection wells. Traditionally, they are dissolved using HCl and other inorganic acids. In the …

Forecasting the estimated ultimate recovery (EUR) for extremely tight gas sites with long-
term transient behaviors is not an easy task. Because older, more established methods used …

Unconventional reservoirs have very low permeability, vertical and lateral heterogeneity,
and complex geological settings. To make decisions about completing these wells, the …

Production shut-in is common for all E&P operators. Well shut-in could be due to planned
surface or downhole maintenance, unplanned equipment failures, or in response to offtake …

Unconventional well test analysis in multistage fractured reservoirs may be challenging due
to extensive wellbore storage effects, significant effects of wellbore dynamics, fracture …

To improve economics in stacked unconventional formations, operators need
measurements of downhole fluid properties and mechanical stress. The fluid properties are …