牛心坨油层弱凝胶深部调剖技术研究与应用

Research and Application of Niuxintuo Reservoir Weak Gel Deep Profile Control Technology

牛心坨油层油藏裂缝发育,分注状况差,平面上水驱波及差异大,注入水沿裂缝窜进,使沿裂缝方向上的采油井含水上升快,稳油控水难度大。针对这种情况,开展了弱凝胶深部调剖技术研究与应用。通过对调剖剂配方体系、注入段塞、施工工艺优化设计等方面研究和现场试验,有效调整了吸水剖面,扩大了水驱波及体积,提高了油井产量,抑制了含水上升速度过快,改善了水驱开发效果。

Fractured growth of Niuxintuo reservoir with bad separate injection, big differences of water driving waves on water surface and injected water bursting into fissure, which cause the fast rising of water in producing well in the space along fissure and add the difficulty of stabilizing oil production and controlling water cut. On account of this situation, research and application is developed on weak gel deep profile control technology. By taking research and field tests on profile control agent formula system, injecting slug, optimal design of construction technology and so on, we regulate the water injection profile effectively, enlarge the water driving wave and its volume, increase the ell yield, control the containing water rising peed in a normal range and improve the development effect of water driving.