垦西垦71平1块特稠油降黏输送工艺技术研究

Research on Kenxi Ken 71-1 Block of Special Heavy Oil Transportation Technology

针对垦西垦71平1块特稠油黏度高、密度大、流动性差,油井举升和输送困难的问题,开展了加热、掺水、加降黏剂、掺稀等多种降黏工艺研究,并对各工艺进行运行成本预算和优化,优选井筒电加热、井口掺热水降黏、混合液途中加热掺稀工艺,实现垦71平1块稠油正常举升和输送。该工艺具有现场管理方便、运行平稳、可靠性高,对后期原油处理无影响等优势。目前开井8口,日产油75.3t,累计产油2.66×10~4t,扣除运行成本,目前累计产油效益1968.4万元。

For Kenxi Ken 71-1 block heavy oil of high viscosity,high density and poor liquidity, difficulty of the well lifting and conveying. Indoor heating, water blending, viscosity agent, blending thin oil and a variety of viscosity reducing research processes is used.And meanwhile do the running cost budgeting and optimizing, optimizing wellbore electric heating, wellhead mixing hot water viscosity, mixture liquid blending thin oil on heating.Thus Kenxi Ken 71-1 block can realize normal lifting,transportation.The process is easy to realize the advantages of site management,stable operation,high reliability,no effect to later crude oil treatment. Currently 8 wells are running, output of oil is 75.3 tons/day, total producing 26600 tons of oil, deduct running cost, now total oil production efficiency can reach 19.684 million yuan.