Wang L.,Down Hole Technical Service Company |
Chen Z.-Z.,Down Hole Technical Service Company |
Wang Q.,Down Hole Technical Service Company |
Xu Q.-X.,Down Hole Technical Service Company |
And 2 more authors.
In view of problems to the down hole operated RTTS packer of once time of unsetting, two times of checking up for unqualified, the influence of stress, lowering off speed and no clean of casing wall to packer is analyzed. It is thought that the water hammer pressure caused by the too fast speed resulting in damage of it for the friction between hydraulic anchor teeth and casing, scale at casing wall being too thick will affect the anchorage force of hydraulic anchor to cause the packer upward. Taking field application as example, the paper puts forward the countermeasures that are being seal of the tubing thread, the strict control of tool speed, being clean of the casing setting section, increasing setting load of the packer in water injection well. ©, 2015, Well Testing. All right reserved. Source