A German research team has investigated the use of zeotropic fluid mixtures as the working fluid in high-temperature heat pumps (HTHP). Zeotropic mixtures consist of two or more fluids with varying ...

Drilling deeper, longer and more challenging wells has been made possible by improvements in drilling technologies, including more efficient and effective drilling fluids. Drilling fluids, also ...

Tight gas reservoirs are characterized by narrow pores and throats, abundant clay minerals, and developed fractures. These lead to severe formation damage during drilling, negatively affecting ...

PetroChina Tarim Oilfield Co. worked with Southwest Petroleum University researchers to test new drilling fluid technology designed to prevent formation damage for ultradeep fractured tight sandstone ...

Based on the the heat pump-organic rankine cycle, scientists in Portugal have created six different models of Carnot batteries for stationary storage. They investigated 16 different combinations of ...