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靖安油田五里湾ZJ53井区储层渗透率低,非均质性强,在前期注水开发过程中,受天然裂缝和人工裂缝影响,主向井裂缝性水淹特征明显,侧向井呈现高渗透带水淹特征,导致注水驱油效率低下。泡沫辅助空气驱将空气作为驱油剂,泡沫作为辅助调剖剂,可实现边调边驱,具有实施成本低,工艺简单的特点,特别对低渗透、裂缝见水油藏能有效改善平面水驱矛盾,扩大波及体积。现场试验应用表明,试验后该区19口油井中有11口明显见效,综合含水由58.3%下降到50.3%,日产油总量由见效前的47.3t上升到最高值62.1t,达到了增油降水目的。
Due to low permeability and strong heterogeneity in the well WJ51 of Wuliwan in WJ Bay, Jing’an Oilfield, due to natural fractures and artificial fractures, the fractured flooding characteristics of the main well are obvious and the lateral wells exhibit high permeability With flooded features, leading to flooding flooding inefficient. Foam assisted air-driven air as an oil displacement agent, the foam as a secondary profile control agent can be adjusted while the side drive, with the implementation of low cost, simple process characteristics, especially for low permeability, see cracks in water reservoir can effectively improve the flat water Driven contradictions, expanding the spread of volume. The field test shows that after the test, 11 of the 19 oil wells in the area were markedly effective, the integrated water content decreased from 58.3% to 50.3%, and the total daily output of oil increased from 47.3t to 62.1t Precipitation purposes.