西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (2): 109-114.

• 石油与天然气工程 • 上一篇    下一篇

遇水膨胀封隔器分段酸压技术及应用

张波1,2,薛承瑾1,周林波1,张烨2,3   

  1. 1. 中国石化石油工程技术研究院,北京朝阳100101;2. 中国石油大学石油工程学院,北京昌平102249;3. 中国石化西北油田分公司工程技术研究院,新疆乌鲁木齐830011
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2013-04-01 发布日期:2013-04-01

Technology and Application of Multi-stage Acid Fracturing byWater-swelling Packer

Zhang bo1,2, Xue Chengjin1, Zhou Linbo1, Zhang Ye2,3   

  1. 1. Sinopec Research Institute of Petroleum Engineering,Chaoyang,Beijing 100101,China2. School of Petroleum Engineering,China University of Petroleum,Changping,Beijing 102249,China3. Engineering and Technology Research Institute,Northwest Oilfield Company,SINOPEC,Urumqi,Xinjiang 830011,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-04-01 Published:2013-04-01

摘要: 中国西北某油田奥陶系碳酸盐岩油藏以裂缝溶洞为主要储集空间,具有超深、高压和高温的特点,水平井笼
统酸压存在效果差以及分段改造方式和工具选择困难等问题。阐述了遇水膨胀封隔器分段酸压技术原理、技术关键、
施工程序和工具性能参数。根据试验井实际钻、录、测井资料和分段酸压级数优化结果,结合储层裂缝、溶蚀孔洞特
点,并考虑完井工具对井径、井眼轨迹的要求,以有利储层段有效改造为原则,确定分段酸压完井方案,优化了封隔器
下入和膨胀座封时间,开展了分段酸压优化设计以及现场试验。试验表明:分段酸压完井方案及酸压优化设计方法是
正确的,但投球滑套等工具质量以及完井酸压过程中的质量控制需进一步提高和完善。

关键词: 遇水膨胀封隔器, 碳酸盐岩油藏, 水平井, 分段酸压

Abstract: The ordovician carbonate reservoir of one oilfield in the northwest of China,is mainly fracture cavern,with the
reservoir features of ultra-deep,high pressure and high temperature;the effect of horizontal conventional acid fracturing is
very limited,and there are still difficulties in the selection of multi-stage stimulation methods and tools. This paper introduces
the technical principle,key technical aspects,operation program and tool performance of multi-stage acid fracturing by waterswelling
packers. Based on actual drilling/mud logging/logging data and the optimized stages of multi-stage acid fracturing,
and in combination with the characteristics of reservoir fractures and solution caves,as well as the requirements of completion
tools on borehole diameter and trajectory,We determine the completion program of multi-stage acid fracturing,optimize the
RIH and inflation setting time of packers,and improve the multi-stage acid fracturing design and complete field test,under the
principle of effective stimulation and favorable reservoirs. The field test results show that the completion program of multi-stage
acid fracturing and optimized acid fracturing design are both correct,but the quality of tools like ball injection sliding sleeve
and the quality control in acid fracturing completion still need to be improved.

Key words: water-swelling packer, carbonate reservoir, horizontal well, multistage acid fracturing