METHOD FOR OBTAINING AIRTIGHT CORE AND DEVICE FOR ITS REALIZATION

摘要

Use: well drilling with coring. SUMMARY OF THE INVENTION: an act of sealing the core overlapping the core tube of the lower sealing unit in the form of a rotary ball valve. After cutting the core gap is performed projectile core lifter downhole Insulating core tube axis of the core is carried out after separation and rotation of the ball valve - the movement of the core barrel upward movement is performed with full control of the degree of closure of the spherical valve device implementing the method comprises a deformable Kerr norvatel elements, arrangements movable core catcher, the core tube and a ball valve actuated by transmitting the weight of the core tube when the drill string Pomeau soup junk thrust nozzle slotted projections. 2c and 1 zlf-nN. 5 yl.