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1. 发明申请

WO2015177199A2 METHOD FOR STIMULATION OF THE NEAR-WELLBORE RESERVOIR OF A WELLBORE 审中-公开
标题翻译：用于刺激井壁近壁储层的方法
公开(公告)号：WO2015177199A2
公开(公告)日：2015-11-26
申请号：PCT/EP2015/061090
申请日：2015-05-20
申请人： MÆRSK OLIE OG GAS A/S
发明人： HANSEN, Jens Henrik , KUTTANIKKAD, Sreejith Pulloor
CPC分类号： E21B43/25 , E21B33/12 , E21B33/122 , E21B34/06 , E21B43/08 , E21B43/14
摘要： A wellbore (1) surrounded by a formation has a horizontal section provided with a non-cemented perforated liner (3), thereby forming an annular space (4) between the liner and the formation. The annular space is divided into zones (zone 1, zone 2, zone 3) isolated from each other by means of respective external packers (6, 7, 8) arranged externally on the liner. Selective access to the zones is provided by means of an internal pipe (9) arranged inside the liner and provided with internal packers (10, 11, 12) corresponding to the respective external packers. For each of the zones, the internal pipe is provided with a valve (14, 15, 16) providing access between the inside of the internal pipe and the corresponding zone. Stimulation of the near-wellbore is performed by pumping acid or the like reactive fluid through the internal pipe into the wellbore and is performed simultaneously in adjacent zones of the annular space.
摘要翻译：由地层围绕的井筒（1）具有设置有非胶合穿孔衬套（3）的水平截面，从而在衬套和地层之间形成环形空间（4）。环形空间通过设置在衬套外部的相应的外部封隔器（6,7,8）分成彼此隔离的区域（区域1，区域2，区域3）。通过内衬管道（9）提供对区域的选择性访问，内部管道（9）设置有对应于相应的外部封隔器的内部封隔器（10,11,12）。对于每个区域，内部管道设置有阀（14,15,16），其提供在内部管道的内部和相应区域之间的通路。近井筒的刺激是通过将酸等反应流体通过内管泵送到井筒中并在环形空间的相邻区域中同时进行的。

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