«Oilfield engineering»

Modeling of residual gas reserves development using submersible electric centrifugal pump unit in a drowned gas production wells

UDC: 622.279.23/.4.001.57
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia
² Gazprom dobycha Urengoy, Novy Urengoy, Russia

Keywords: drowned gas well, self-pressing, electric submersible pump, well bottom zone, water saturation

Annotation:

In the article examine the problem of a gas well shut because of water encroachment around a perforation zone at the last stage of reservoir operation.

The purpose of the research is to determine the feasibility of using a pump in a gas well under conditions of water encroachment of its perforated intervals to reduce water saturation around the bottomhole zone and increase gas flow rate.

To research the efficiency of the method, use a hydrodynamic model of a gas field in West Siberia. To modeling a pump water production in the gas well, a special pseudo-well designed near the existing production gas well. The construction and inclination of the pseudo-well are the same as the current existing well, and it works only for water production. In the article described several series of experiments differ from each other of number of working wells (existing well or existing with pseudo-well), technological mods (water production rate of the pseudo-well is maximum or same to existing well) and work periods (constantly or cyclically). An indicator of a development efficiency between variants is a level of accumulated gas volume. According to results of calculation, running in the bottom hole an electric submersible pump and its work on maximum production regime allow to reduce an intensive of water coning and water saturation at perforating zone and also to increase a gas production rate.

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