Tool Introduction

The BT naked eye packer is a bottomhole support packer that can be used alone or connected with a safety seal to form a safety seal packer. The outer diameter of the rubber cylinder should be determined according to the inner diameter of the wellbore. If the gap is too small, it is not easy to go down the well. If the gap is too large, the rubber cylinder is not easy to seal and will also weaken its pressure bearing capacity. It is generally advisable to use a rubber cylinder that is 12-25mm smaller than the inner diameter of the wellbore.

Structural characteristics

① Composed of sliding coupling, sliding head, seat sealing shaft, rubber cylinder, metal cup, support seat and lower joint;

② Lower the pressure seat seal of the pipe column, easy to operate;

③ Used in conjunction with safety seals, the well opening and closing operation is not prone to seal loss.

operation

After the packer is lowered to the predetermined depth, a compressive load is applied to the lowered column, and the rubber cylinder is compressed and expanded to seal the seat; Lift the pipe column and unseal the packer.

technical parameter