| 摘要 |
FIELD: oil and gas producing industry; devices for isolation of well bore in performance of various technological operations, including those involved in changing of temperature of injected working agents. SUBSTANCE: packer has mandrel carrying landing slip unit and sealing member with hydraulic drive having piston position lock. Novelty consists in availability of additional landing slip unit installed on mandrel to which cylinder of hydraulic drive of sealing member is secured, and rod of piston of the hydraulic drive is made in form of branch pipe interconnected with sealing member. EFFECT: higher reliability of packer operation and its easy removal and lifting. 2 cl, 1 dwg |
