赵益忠, 孙磉礅, 高爱花, 智勤功, 李鹏. 稠油油藏蒸汽吞吐井长效防砂技术[J]. 石油钻探技术, 2014, 42(3): 90-94. DOI: 10.3969/j.issn.1001-0890.2014.03.017
引用本文: 赵益忠, 孙磉礅, 高爱花, 智勤功, 李鹏. 稠油油藏蒸汽吞吐井长效防砂技术[J]. 石油钻探技术, 2014, 42(3): 90-94. DOI: 10.3969/j.issn.1001-0890.2014.03.017
Zhao Yizhong, Sun Sangdun, Gao Aihua, Zhi Qingong, Li Peng. Long-Term Sand Control Technology for Multiple Round Steam Huff and Puff Wells in Heavy Oil Reservoirs[J]. Petroleum Drilling Techniques, 2014, 42(3): 90-94. DOI: 10.3969/j.issn.1001-0890.2014.03.017
Citation: Zhao Yizhong, Sun Sangdun, Gao Aihua, Zhi Qingong, Li Peng. Long-Term Sand Control Technology for Multiple Round Steam Huff and Puff Wells in Heavy Oil Reservoirs[J]. Petroleum Drilling Techniques, 2014, 42(3): 90-94. DOI: 10.3969/j.issn.1001-0890.2014.03.017

稠油油藏蒸汽吞吐井长效防砂技术

Long-Term Sand Control Technology for Multiple Round Steam Huff and Puff Wells in Heavy Oil Reservoirs

  • 摘要: 为进一步提高稠油蒸汽吞吐井的防砂有效期,从防砂工具、充填材料及充填工艺等方面对长效防砂技术进行了研究。根据充填口重复开关的思路设计了充填工具,并对其密封件的材料进行了优选,研制了长效防砂工具;利用多层覆膜方法研发了耐高温高强度覆膜支撑剂;采用多段塞充填工艺进行施工,形成了稠油油藏蒸汽吞吐井长效防砂技术。长效防砂工具密封件4轮次吞吐试验后,其压缩永久变形率小于55%、抗拉强度8.9 MPa、拉断伸长率102%,能满足蒸汽吞吐井防砂要求;耐高温高强度覆膜支撑剂耐温300 ℃,4轮次吞吐试验后固结强度7.1 MPa、渗透率96 D,完全满足蒸汽吞吐井防砂生产要求;多段塞充填工艺降低了防砂成本及后期处理难度。稠油油藏蒸汽吞吐井长效防砂技术在胜利油田11口井进行了现场应用,平均防砂有效期长达930 d,满足了蒸汽吞吐井对防砂的要求。

     

    Abstract: In order to prolong sand control validity for steam huff and puff wells in heavy oil reservoirs,sand control tools,compaction material and packing technology were studied.Long-acting sand control tool was developed with filling head repeatable switch and modified sealing element material;high temperature resistant coated proppant with high strength was developed and multi stage packing was adopted in injection.These combined measures form the long-term sand control technology for multiple round steam huff and puff wells in heavy oil reservoirs.The sealing element of long-acting sand control tool can meet production requirements of multiple round steam huff and puff wells,whose compression deformation is less than 55%,extension strength reaches 8.9 MPa and the elongation at break is 102% after four rounds huff and puff experiments.High temperature resistant coated proppant can resist high temperature up to 300 ℃,having a consolidation strength of 7.1 MPa and permeability of 96 Darcy after four rounds of steam huff and puff,which fully meets the requirements of steam huff and puff production.Multistage packing technology reduces cost and post-processing difficulty.The long-term sand control technology for multiple round steam huff and puff wells in heavy oil reservoirs has been applied in 11 wells in Shengli Oilfield,and the average valid sand control time is 930 days,which meets sand control requirements of multiple round steam huff and puff wells.

     

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