Optimization of energy saving gathering and transportation mode in a block of Tahe oilfield

Abstract

With the increase of water content and the number of shutdown wells in old areas, the existing gathering and transportation mode can no longer meet the energy saving demands of oilfield production for Tahe oil field. Therefore, it is an urgent need of oilfield production management to reduce energy consumption. In this paper, the temperature drop and pressure drop models of oil-gas-water three-phase flow were deduced theoretically, and for four wells in a block in Tahe oilfield, taking 30 °C as safe gathering and transportation temperature limit, operation parameters in three kinds of gathering and transportation modes, namely, single well gathering and transportation, branch connection gathering and transportation, and ring gathering and transportation, were determined. The energy consumption and operation cost were calculated, and the comparative analysis results showed that, for these four wells, the most energy saving gathering mode was the branch connection form of pipe network.