Increase of production well operation efficiency by annular pressure decrease: a case study of the BS4-5 formation
UDC: 622.276.34
DOI: -
Authors:
SHIYAN STANISLAV I.
1,
BLIZNYUKOV VLADIMIR YU.2,
SHABLIY ILYA I.1
1 Kuban State Technological University, Krasnodar, Russia
2 Russian Academy of Natural Sciences, Moscow, Russia
Keywords: annular gas pumping, annular gas pumping equipment, calculation of flow rate increase due to annular gas pumping, annular gas pumping technology modeling, PIPESIM software simulation results, joint manifold system, bypass valves along the tubing
Annotation:
Based on the previously analyzed development characteristics of the BS4-5 formation, it was concluded that the formation has a high gas content and low reservoir pressure. These problems can be solved by implementing annular gas pumping technology, which allows for the removal of excess gas and increases a reservoir drawdown by reducing annular pressure. The authors of the article calculated the flow rate increase achieved by applying annular gas pumping technology. The use of a compressor unit allowed for the total well flow rate increase by 46,5 tons/day. The annular gas pumping process was modeled using the PIPESIM software package, resulting in 11 m3/day increase of one of the wells flow rate and reducing the annular pressure by 25 atm. As a result of implementing the annular gas pumping technology, additional oil production of 17000 tons is projected for 15 wells in the field.
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