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本文介绍的是水力喷射分段压裂工艺在大港油田埕海二区张海27-29H井的应用和研究,在施工过程中针对难点所采取的技术措施和现场施工情况。该井初期试油储层产能偏低,酸化和射孔后,效果不明显,只是近井地带渗流条件得到了改善,远井地带储层渗透性仍然不理想,通过水力喷射分段加砂压裂改造,通过造长缝,以人工填砂裂缝改造远井地带渗流条件,有效提高了井口产能。
This paper introduces the application and research of hydraulic jetting fracturing technology in Zhanghai No.27-29H well in the second sea area of Dagang Oilfield, and the technical measures and on-site construction for the difficulties in the construction process. The productivity of initial oil reservoirs in the initial stage was low, and the effect of acidizing and perforation was not obvious. However, the seepage conditions in the near-well zone were improved. The reservoir permeability in the far-well zone was still not ideal. Crack reconstruction, through the long seam, artificial sand fissures to transform the seepage conditions in the far area, effectively raising the wellhead productivity.