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1.
公开(公告)号:US20070068674A1
公开(公告)日:2007-03-29
申请号:US11534542
申请日:2006-09-22
申请人: Alex Turta , Fred Wassmuth , Vijay Shrivastava , Ashok Singhal
发明人: Alex Turta , Fred Wassmuth , Vijay Shrivastava , Ashok Singhal
CPC分类号: E21B43/20 , E21B43/305 , E21B43/32
摘要: A modified toe-to-heel waterflooding (TTHW) process is provided for recovering oil from a reservoir in an underground formation. After establishing the conventional TTHW waterflood, the process includes placing a chemical blocking agent at the watered out producing toe portion of the horizontal leg of the production well to create a blockage in the producing toe portion and to create a new producing toe portion in an open portion of the horizontal leg adjacent the blockage through which most of the production takes place. Production is then continued through the new producing toe portion and the open portion of the horizontal leg of the production well. These blocking and producing steps can be continued to progressively block producing toe portions in a direction toward the vertical pilot portion of the production well.
摘要翻译: 提供了一种改进的脚趾到脚跟注水(TTHW)工艺,用于从地下地层的储层中回收油。 在建立传统的TTHW注水后,该方法包括将化学阻塞剂放置在生产井的水平腿的浇水生产脚趾部分,以在生产趾部产生堵塞,并在开口中产生新的生产趾部 靠近大多数生产发生的堵塞的水平腿的部分。 然后通过新生产的脚趾部分和生产井的水平腿的开口部分继续生产。 这些堵塞和制造步骤可以继续沿着朝向生产井的垂直先导部分的方向逐渐地阻止制造趾部。
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2.
公开(公告)号:US07328743B2
公开(公告)日:2008-02-12
申请号:US11534542
申请日:2006-09-22
申请人: Alex Turta , Fred Wassmuth , Vijay Shrivastava , Ashok Singhal
发明人: Alex Turta , Fred Wassmuth , Vijay Shrivastava , Ashok Singhal
IPC分类号: E21B33/138 , E21B43/20 , E21B43/22 , E21B43/30
CPC分类号: E21B43/20 , E21B43/305 , E21B43/32
摘要: A modified toe-to-heel waterflooding (TTHW) process is provided for recovering oil from a reservoir in an underground formation. After establishing the conventional TTHW waterflood, the process includes placing a chemical blocking agent at the watered out producing toe portion of the horizontal leg of the production well to create a blockage in the producing toe portion and to create a new producing toe portion in an open portion of the horizontal leg adjacent the blockage through which most of the production takes place. Production is then continued through the new producing toe portion and the open portion of the horizontal leg of the production well. These blocking and producing steps can be continued to progressively block producing toe portions in a direction toward the vertical pilot portion of the production well.
摘要翻译: 提供了一种改进的脚趾到脚跟注水(TTHW)工艺,用于从地下地层的储层中回收油。 在建立传统的TTHW注水后,该方法包括将化学阻塞剂放置在生产井的水平腿的浇水生产脚趾部分,以在生产趾部产生堵塞,并在开口中产生新的生产趾部 靠近大多数生产发生的堵塞的水平腿的部分。 然后通过新生产的脚趾部分和生产井的水平腿的开口部分继续生产。 这些堵塞和制造步骤可以继续沿着朝向生产井的垂直先导部分的方向逐渐地阻止制造趾部。
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