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1·A hydraulic setting anchor of type GY241, and a double packing ZY331 back washing packer features in self pack and rubber sleeve pack are developed.

研制了液压坐封gy241型锚定器和“自封与压缩胶筒”双重密封的ZY331型反洗封隔器。

2·Being particularly against leakage function of RTTS packer with hydraulic anchor is applied in shallow or under balance pressure extensively.

RTTS封隔器因水力锚自身特有的防窜功能，在浅井测试及负压测试中具有广泛的应用。

3·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；