Automatic packer reliability prediction under pulsed transient flooding of hydrocarbon reservoirs

International Conference on Mechanical Engineering, Automation and Control Systems 2018

Khabibullin, M.Ya.^1 ; Suleimanov, R.I.^1

Ufa State Petroleum Technological University, Branch of the University in the City of Oktyabrsky, 54a, Devonskaya St., Oktyabrsky, Republic of Bashkortostan

452607, Russia^1

关键词: Accumulation time;    Hydraulic shocks;    Hydrocarbon deposits;    Hydrocarbon reservoir;    Output frequency;    Pressure pulsation;    Pulsed injection;    Reliability prediction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/560/1/012024/pdf
DOI  :  10.1088/1757-899X/560/1/012024

来源: IOP

【 摘 要 】

For pulsed transient flooding of hydrocarbon deposits (installed on the tubing string below the packer) of the injection well, hydraulic impulse devices are used. When they work (generation of pulses in the injected fluid) in the tubing string, hydraulic shocks occur at a frequency equal to the output frequency of pulses generated by the devices. The result is a reciprocating movement of the tubing string and the packer. Hence, for effective injection of fluid, it is necessary to provide automated long-term reliability of the sealing elements of the packer and long-term sealing of the annular space. Joint movement of the packer and pressure pulsation intensify mechanochemical aging processes. To improve durability of packer seals during long-term pulsed injection of fluid into the well, it is necessary to replace rubber materials with rubber-fabric materials and use damping equipment along with impulse devices. Their use will significantly reduce the amplitude of packer oscillation (stroke length of sealing element S) and maximum accumulation time Wmax.