关键词: 流体势, 水动力, 闭合区, 潜力区, 注水油田, 纯化油田

Abstract: Oilfield injection of water development follows liquid potential energy theory that oil-gas be moved and got together from higher to lower potential energy region.Namely,a part of movability oil-gas be developed from well of lower potential energy region,the others be enriched in the lower potential energy region of controllness that forms so-called potentiality region.Author points out that controlling factor of potentiality region can be marked off stillness shelter form and dynamic potential of water on the basis of recognized essential potentiality region according to liquid potential energy theory.Therefore,author analyses and studies the forming causes of potentiality region,marks off three types and generalizes its character and describes its form.On the basis of studying,applying the Chunhua oilfield,crude oil output had been increased obviously in the three types potentiality region.Especially,in the example of higher injection water and lower development,by analysis the liquid potential energy form and description close region,new well by drilling had no water in early days beside lower region of high water region.At the same time,the oil-gas has been got back and crude oil output had been increased obviously in the stopping well with high water.Therefore,so-called actual potentiality region that is the small structure has been broken through.Consequently,the potentiality region of water injection oilfield has been enlarged and shows the higher potentiality.Obviously,the paper has the reference valve to increase the development level of water injection oilfield at pressent.

Key words: liquid potential, water force, close region, potentiality region: water injection oilfield, Chunhua oilfield