遇油\遇水自膨胀封隔器在水平井完井中的应用

Application of Oil\Water-Swelling Packer to Horizontal Well Completion

遇油\遇水自膨胀封隔器是一种新型的完井工具。利用自膨胀封隔器代替常规封隔器进行水平井完井,可以提高完井效率,降低完井风险,减少完井费用。介绍了自膨胀封隔器在水平井裸眼分段、固井辅助密封、多分支井完井3个方面的应用,并说明了该完井技术的工艺特点和技术优势。经多次现场试验,遇油\遇水自膨胀封隔器完井技术是成功的,对我国复杂油气藏的有效开采具有重要意义。

Oil／water-swelling packer is a new well completion tool in the oil fields. Compared to traditional packers,it makes horizontal completion simpler,reduce completion risk and cost. The paper focuses on application of oil／water-swelling packer to horizontal well completion：open hole zonal isolation, supplementary seal for cement and multilateral well completion. It describes to the completion process and technological advantages too. The successful applications show that the oil ／water-swelling packers have a good performance. It is very important for complex hydrocarbon reservoir development to develop the completion technique in the future in China.