Pumped storage hydro-electricity power station; pumped storage hydro-electric technology; pumped storage technology

Generation of electricity by the difference in height between two water reservoirs. The water flows down from the upper reservoir to the lower reservoir via pipelines that activate electricity generation turbines. The pumping of the water from the lower reservoir to the upper reservoir is undertaken by these same turbines activated by an electric pump. …

PVT behavior; Pressure volume temperature behavior

It is important to develop mathematical relationships for predicting the behavior of fluids/gases under any imaginable condition of pressure, temperature and volume (P-V-T). This is a very challenging problem. The way science approaches these sorts of problems is to introduce simplifications of the physical reality, by formulating a set of assumptions and coming up with …

Range of uncertainty (oil and gas reserves)

The “range of uncertainty” reflects a reasonable range of estimated potentially recoverable volumes for an individual accumulation. Any estimation of resource quantities for an accumulation is subject to both technical and commercial uncertainties, and should, in general, be quoted as a range. In the case of reserves, and where appropriate, this range of uncertainty can …

Rathole

Extra hole drilled beyond the target of the well. When drilling to a target depth in a well, one would drill a few meters past the target to allow tools and casing to cover the target zone completely