Experimental Studies and Analysis of Gas-Jet Device's Operation Characteristics for Oil and Gas Production in Abnormal Operating Conditions

摘要

Nowadays one of the most actual issues in oil & gas production on the fields is increasing of workover interval, especially in conditions of underdeveloped infrastructure of petroleum objects. In this paper the gas-jet technologies of the well reactivation and the well operation in abnormal operational conditions are proposed to solve actual problems of hydrocarbons (HC) production. This method is proposed as alternative of traditional jet pump (JP) technology. Analysis of current theories and practices of jet device (JD) application illustrated that today the least researched JD are JD for ejection passive fluid by power high pressure gas. They are named gas-jet devices (GJD). In this connection experimental studies of GJD were carried out. In this paper the results of complex experimental studies of gas-jet gas devices (GJGD) and two-phase gas-jet liquid devices (GJLD) and summarized characteristics of their work are described. As result of theoretical analysis and experimental studies optimal design of sonic GJD with the cylindrical throat depending on the type of passive stream was determined. Also influence of passive and power fluid on characteristics of GJD work was studied. Based on high volume of experimental studies results the procedure of GJD calculation for specific technological conditions was created. Moreover the technological schemes of optimization of gaslift wells on the Eastern Area of Orenburg Oil-Gas Condensate Field (EA OOGCF) and reactivation and operation of water-flooded gas wells by using wellhead and downhole GJD were proposed.