深层高压低渗油藏改善开发效果研究应用

国际油价持续走高,低品位油藏的开发已经提上日程,本文介绍了中原油田文33块沙三上油藏,初期采用大井距基础井网,长井段合注合采,油藏长期"注不进、采不出"的状况。后通过开展先导试验,采用细分开发层段、缩小注采井距、油层改造、水质改善等思路对油藏进行逐年滚动调整和治理,取得了显著效果,由原来储量基本不动用一举实现了高速、高效注水开发,经济和社会效益十分显著。该思路与方法从根本上解决了深层高压低渗油藏水驱动用难的问题,对同类油藏的开发具有借鉴意义。

During the early development period of Wen33-lump of the upper part of Sha-2 veservior ervior of ZhongYuan oilfield,The initial development mode is to establish the widen-wells-space basis pattern and adopt commingled production and commingled water injection in long well section,thus the reserves kept intact,injection-production works have no effect.Some new ideas of make pilot,subdivide development layer,shorten inject-product wells space,reconstruct oilformation,enhance water quality etc was applied for ...