This special issue is a selection of works that outline key advances, challenges and prospects of integrated geophysical, geotechnical, geo-environmental and atmospheric monitoring technologies in achieving net-zero greenhouse gas (GHG) emissions. In line with the Paris Agreement, the objective is to facilitate the fast deployment and de-risking of geological carbon capture and storage (CCS) at the required scale. Ideally, this should complement other forms of renewable energy source (RES) such as hydro, solar, wind, geothermal, hydrogen production energy and biogas, aiming at the improved overall energy efficiency/balances due to both modernization of the existing energy-related infrastructure and green field.

The Lead Guest Editor

Alexander Droujinine

The knowledge of PVT relations and phase behavior of reservoir fluids are very important in reservoir engineering in developing more efficient techniques to increase hydrocarbon recovery. Enhancement recovery from the oil and gas fields requires accurate PVT data gathered at the reservoir conditions. Although, much progress has been made in development of modern organic chemistry, adequate experimental data are not available. In addition, the experimental measurements of PVT data are expensive and time consuming and sometimes their validity  is doubtful. Therefore, PVT models have attracted a lot of attentions. Among these, EoSs are presented as the most important tools.

The Lead Guest Editor

Mehdi Ghanbari

The objective of the special issue deals gap between the engineering petroleum and natural gas.It helps on publishing explicitly written articles intelligible to scientists and engineers working in any field of petroleum engineering,natural gas.The fields of petroleum exploration,production and its broadest possible sense will be published in this issue.

The Lead Guest Editor

Udhaya Sankar

The stringent environmental regulations for controlling sulfur content of fuels have led to the growth of research in the development of an effective and economical methods for deep desulfurization of fuels. Deep desulphurization with current conventional methods can hardly be economically. Thus, alternative methods for obtaining ultra-low sulfur fuel oil are in the developing stage and research continues in the field of both new catalysts and new catalytic technologies to meet the vast need for cleaner fuels.

The Lead Guest Editor

Afsanehsadat Larimi

Changing pressure, temperature, and composition cause instability in crude oil and create a problematic issue which is called asphaltene deposition. Asphaltene deposition causes problems in wettability alteration and flow assurance in different parts of petroleum industry so asphaltene deposition becomes a challenging issue in petroleum engineering.

The Lead Guest Editor

Amin Bemani

With increasing levels of atmospheric carbon dioxide, carbon capture, utilization and storage (CCUS) has been known as an effective method for reducing CO2 emissions from the use of fossil fuels. The technology of storing CO2 with enhanced oil recovery(CO2-EOR) has recently attracted interests since it has immense potential to increase the economic output of a CCS project and reduce the overall cost. Simulations and experiments illustrate that CCUS in geological formations such as oil and gas reservoirs can store large volumes of carbon dioxide as well as provide energy recover improvements.

The Lead Guest Editor

Amin Daryasafar