辞洋HA114.NET

Most wells drilled in the field have to be fractured before production with only a few can produce by natural energy.

ESP product design must be combine with the high-GOR well theory calculating, and must be able to fit the high-GOR well further more.

Dry gas injection huff and puff is one of the effective techniques to remove the retrograde condensate blocking of condensate gas wells.

The result shows that this formula is feasible and practical for predicting water breakthrough time in gas reservoirs with edge water.

It is pointed out that to raise drilling speed, systems engineering must be done well and a complete set of technique must be formed.

The method can be used to calculate the the end time of effect of wellbore storage with start-up pressure gradient considered.

Through the test and comparison of case history, the new method is confirmed to be reasonable in theory and practical in practice.

For a gas well the flow versus the difference of the squares of the average reservoir and wellbore pressures are plotted on log-log paper.

Research showed that reservoir deformation should be considered when forecasting coalbed gas well productivity.