Mathematical Model of Non-pressurized Flow for Calculating Killing of Gas Wells with Abnormally Low Reservoir Pressures

This article discusses in detail the issue of killing gas wells with abnormally low reservoir pressure. The reason of discrepancies between the calculated data of the killing process according to the IWCF standard and the actual ones has been identified. It describes the physical mechanism of rupture of the liquid flow during injection. A mathematical formula describing the rupture of the fluid flow in the pipes is derived and verified using production data. The average deviation is 4.49%, which is acceptable for the problem being addressed. The authors proposed a mathematical model describing the killing of a gas well with abnormally low reservoir pressure. The killing process is analyzed at each stage. Verification calculations and comparison of their results with field data are presented. The average deviation of the calculated values from the actual ones falls within an acceptable range, amounting to 8.84%. The model is recommended for use in calculating the killing of gas wells with abnormally low reservoir pressure.

Mathematical Model of Non-pressurized Flow for Calculating Killing of Gas Wells with Abnormally Low Reservoir Pressures Keywords:

Abnormally low reservoir pressure , gas well killing , well control , Preservation of Reservoir , Porosity and permeability , gas well hydraulics