摘要
中原油田桥 2 9块投入开发后 ,层间矛盾日益加剧 ,油田含水率增加 ,产量大幅度递减。为此 ,分析了该块的产出剖面和吸水剖面 ,认为层间干扰是影响油井产量的主要问题。分析了四种堵水方法 ,认为挤水泥堵水最适合桥 2 9块的实际。实施挤水泥堵水后 ,不仅提高了单井产量 ,而且改善了区块的整体开发效果 ,水驱动用储量也得以增加 ,储采基本平衡。 10井次施工增油 6 5 0 7t,自然递减减少 2 .32 91× 10 4 t,净创经济效益 1170 .70 80万元。因此 ,对于复杂断块油藏 ,应根据其特点采用不同的控水稳油措施。
After Block Qiao 29 was put into development, the contradictions among layers are increasingly evident, the water cut in oil field increases and the production declines by a wide margin. For this reason, the production profiles and water injection profiles of the block were analyzed; it showed that interlayer interference influenced the oil production mainly. After four water shutoff methods were analyzed, squeeze method is thought to be fittest for Block Qiao 29. It can both increase the production of single well and improve the whole development efficiency along with increasing producing reserves obtained by water drive, from this, the reserves and production are in balance basically. Having been done for 10 well-times cement squeeze made the oil production increase 6507 t, natural decline decrease 2.391×10 4t and the net benefit is 1170.7080×10 4 yuan. It can be concluded that different measures on stabilizing oil production by water control should be taken according to their own characters for complex fault block reservoir.
关键词
非均质油藏
注水泥
封堵
控水稳油
堵水
heterogeneous reservoir, interlayer interference, cement squeeze to plug water, stabilizing oil production by water control
