Low pressure liquid reservoir can simultaneously

Are low permeability gas reservoirs a production problem?

The increasing exploiting activities in low permeability gas reservoirs renew the interests of investigating liquid loading phenomena, which is an inevitable production problem for most liquid-producing gas wells. Liquid loading happens when the gas flow rate is not high enough to carry all producing liquids to the surface.

Does a liquid CO2 energy storage system have low pressure stores?

Conclusions A novel liquid CO 2 energy storage system with low pressure stores is reported in this paper. The design principle for the newly proposed system is discussed in detail. Thermodynamically parametric analysis is performed to identify the variation of system performance when key operating parameters are changed.

Does liquid loading affect wellbore production performance in low permeability gas reservoirs?

The reservoir pressure characteristics and wellbore production performance after the onset of liquid loading have not been systematically investigated. This work introduces a newly developed fully implicitly coupled wellbore reservoir model to investigate the liquid loading effects on horizontal wells in low permeability gas reservoirs.

How does a tight water-bearing gas reservoir affect seepage resistance?

During the development of tight water-bearing gas reservoirs, the threshold pressure gradient is enhanced and the seepage resistance is subsequently increased with the rise of water production and the fall of formation pressure, which slows down the propagation of the supply boundary and reduces the gas production.

When does a low permeability reservoir start to flow?

In other words, fluids in low permeability reservoirs begin to flow only when the driving pressure gradient exceeds the threshold pressure gradient (Von Engelhardt and Tunn, 1954).

What is a tight gas reservoir?

According to the classification standards of China Petroleum and North America, gas reservoirs with matrix permeability of less than 1 mD and porosity of less than 12% are classified as tight gas reservoirs. Fracturing transformation is a crucial method for enhancing the productivity of these tight reservoirs 7, 43.