The using packers in oilfields have complex construction. Packersetting and releasing need for certain well conditions. Some problems exist in field application.
According to the casing strings of different sizes, converting zone technology including chemical plugging and packersetting is matched during the process of selective zone production.
针对不同尺寸的套管完井,在侧钻井分层开采的过程中的配套了封堵和卡封等配套的改层工艺。
3
This kind of packer overcomes many disadvantages of the previous ones, such as difficulty in operation, and high possibility of not setting and not releasing.