低渗透复杂断块油藏高含水期稳产技术研究

百49油藏属典型的低渗透复杂断块油藏，地层倾角较大，开发难度大，含水上升快,目前已进入高含水期。针对影响油田开发生产的不利因素，充分利用新理论、新技术、新方法，油藏先后经历了压裂、酸化、补孔以及注水等措施，在高含水期实施了大修扶躺、封堵换层、周期注水等措施。现场实践取得了较好的效果，对油田增产、稳产发挥了较大作用。实现了低渗透复杂断块油藏高含水期的增储上产，有效控制了含水上升率，增加了可采储量，改善了油田开发效果。对其它同类低渗复杂断块油藏高含水期开发具有一定的借鉴作用。

THE TECHNOLOGY FOR STABILIZING PRODUCTION OF LOW PERMEABILITY AND COMPLEX FAULT BLOCK RESERVOIRS AT HIGH WATER CUT STAGE

Bai9 reservoir is low permeability and complex fault block reservoir, its structure is complex with high formation angle and difficult development. Aimed at the disadvantage factors that influence oilfield production, the new theories, the new technologies and the new methods are applied. The measures such as fracturing, acidizing, perforations adding etc. are applied successively in the reservoir. And old well worked over, old well plugged back, periodic water injection etc. are used at high water cut stage. The field practice makes it clear that the results are very good. The measures slow the rising velocity of water cut, increase exploitable reserve and improve oilfield exploitation results. The technologies may be applied in other low permeability and complex fault block reservoirs.