Technological features of well equipment work under production of oils with increased and high viscosityстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 7 июля 2021 г.
Аннотация:Fields with hard-to-recover reserves include formations with small oil-saturated thickness, low-permeable reservoirs and formations with great depth of occurrence. Premature failures of the well equipment entail oil recovery from these fields. To increase technological efficiency of production of high-viscous oils of the well stock equipped with a walking beam pumping unit (WBPU) it is proposed to use a sucker-rod pump with an external weightingagent. Introduction of this type of pumps will increase the value of the minimum load on a sucker-rod string during its downwardstroke, which will reduce the value of amplitude loads. Additional load, created by external weighting agents, will prevent the rod string from hovering due to high hydrodynamic friction forces caused by the pumped fluid's increased and high viscosity. The technological efficiency of introducing this pump in wells with WBPU is demonstrated. Calculations made allow us to determinethe necessary weight of heavy bottom according to the produced fluid's viscosity.