低渗透油田开发的合理井网

低渗透油田开发往往与裂缝密切相关,因此其井网部署是否合理是低渗透油田开发成败与否的关键.本文在回顾了低渗透油田开发井网形式的演化后,对低渗透油田开发的合理井网进行了认真分析,指出低渗透油田开发的合理注采井网应该是不等井距的沿裂缝(天然的或压裂的)线状注水井网.在此基础上,提出了低渗透油田开发合理井网部署的几个关键问题,即必须要搞清楚裂缝的方向,必须要在压裂优化设计基础上确定出基质渗透率和裂缝渗透率的比值.最后还就利用水平井开发低渗透油田的井网问题进行了探讨.

THE REASONABLE WELL PATTERN FOR DEVELOPING LOW PERMEABILITY OIL FIELDS ACTA

The reasonable well pattern dispasitian is a key factor that low permeability ail fields are developed successfully because it is usually relative to fracture.This paper analyze conscientiously reasonable well pattern for developing low permeability ail fields after reviewing the evolution of well patterns for low permeability oil field.It hold that reasanable flooding pattern concerning develapment of law permeability oil field is linear water injection pattern along fracture direction with differ in well spacing.Some key questions of reasonable well pattern disposition about development of low permeability oil field were put for ward.We must get a clear understanding of fracture direction.the determination ratio of matrix permeability to fracture permeability on the basis of optimisation fracturing.Simultaneously well patterns that horizontal well to make use of developing low permeability oil fields were also approached.