Stage collar

➣ It is applicable for vertical wells or the deviation wells with small deviation angles. The tool is short, and can effectively reduce bending stress. The strengths of all components meet or exceed the API standard of the corresponding casings. Shear pins are mounted at the single entrance.;➣ The potential leakage can be reduced significantly. The opening and closing pressure of the channel can be adjusted based on actual condition. There is metal-metal sealing between the body of the stage collar and the lower adapter.

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