Technology of absorption prevention during workover in conditions of low reservoir pressure

Authors: V.N. Gusakov, N.N. Kraevskiy, A.F. Khakimov (RN-UfaNIPIneft LLC, RF, Ufa), A.Yu. Tropin, A.V. Sahan (RN-Perneftegas LLC, Gubkinskiy)
E-mail: KraevskyNN@ufanipi.ru
Key words: hydrophobic emulsion-suspension blocking compound.

Carrying out workover at low reservoir pressures associated with a number of complications: the absorption of killing fluid, gas shows in the wellhead, loss of circulation. These effects reduce the quality of workover, pose risks to working conditions of staff, lead to a significant increase in the time of well repair and output it on mode.The article describes technology of the workover at low reservoir pressure  developed by RN-UfaNIPIneft LLC specialists. Setting the block-pack of blocking hydrophobic liquid allows a flushing of bottom of the well and gets a steady circulation at absorbing wells. 

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