THE USE OF DIFFERENT TECHNOLOGIES OPERATE SPONTANEOUSLY STOPPING GAS WELLS ON THE FIELDS OF THE FAR NORTH

Introduction. The current state of the development of Cenomanian deposits is associated with a significant decrease in reservoir pressure relative to the original and as a result of a decrease in the productivity of producing wells. As a result, the conditions of removal from the bottom of wells coming from the formation and condensing water worsen. The accumulation of water leads to an increase in filtration resistance, a further decrease in productivity and, as a result, to the spontaneous shutdown of wells. Materials and methods of research. Without special geological and technical measures aimed at maintain- ing the operation of such wells, further operation is impossible. To date, the fields of Western Siberia have found the use of such measures as: periodic purging of wells with the release of gas into the atmosphere; treatment of well bottom solid and liquid surfactants; replacement of tubing for pipes of smaller diameter; the use of a plunger Elevator; cyclic injection of dry gas into the annular space; application of modular compressor units and use of concentric lift. Results and Discussion. The most important drawback of the concentric lift technology, when metal pipes are used, is the need to kill the well and the resulting negative impact on the bottom-hole zone of the reservoir by the process fluid, as well as a long downtime of the well with significant capital costs. Currently JSC «PskovGeoKabel» designed and manufactured polymer reinforced pipe and device for its descent into the well without killing a single cut. The developed complex was tested at the Urengoy field. The results of gas-hydrodynamic studies of wells showed that after the descent of the concentric lift column, the coefficient of filtration resistance of the bottom-hole formation zone practically did not change. Conclusion. The most promising technical solutions for the operation of spontaneously stopping gas wells are: injection of surfactants at the bottom, the use of modular compressor units that allow to regulate the technological mode of the wells regardless of the pressure at the entrance to the DKC and the use of a concentric Elevator with reinforced polymer pipes without killing the well.

gas well, of the Cenomanian deposits, gas flow rate, the liquid removal from the wells self-tapping wells

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