In the design of the hydraulic dual-anchor retrievable packer, the following should be taken into consideration: (1)selection of anchoring mode;
可取式液压双向锚定封隔器是目前结构最复杂、性能最好的一种封隔器。 这种封隔器设计中应注意的问题是：（1）锚定方式选择；
A retrievable or drillable packer is set above the formation to be cemented.
在要被注水泥的地层的上面坐封一个可收回封隔器或可钻封隔器。
A retrievable or drillable packer is set above the formation to be cemented.
在要被注水泥的地层的上面坐封一个可收回封隔器或可钻封隔器。
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