FACILITY FOR ACTION ON FACE ZONES OF WELLS Russian patent published in 2001 - IPC

FIELD: oil industry. SUBSTANCE: invention can be used to treat face zone of well by method of implosion. Facility for action on face zone of well includes body made up of lower and upper cylinders with radial windows with partition and conduits for communication of its spaces, piston, sealing member, pusher and tie-rods. Facility is provided with tank with drainage fluid with distribution mechanism and anchoring unit. Spring-loaded shut-off plug with outer annular groove and radial conduits is installed in inner surface of lower cylinder of body. Cup with holes and fingers anchored radially is put on outer surface of lower cylinder of body for axial movement. Sleeve is mounted with clearance in upper cylinder of body, on its outer surface. Non-return valve communicating space above piston with hole clearance is installed in partition. Piston consists of two parts joined by hollow rod. Supporting ring for interaction with fingers of cup is put on outer surface of rod. Stop is made on inner surface of rod. Pusher has radial holes and is anchored with the aid of limiting branch pipe. Tie-rod comes in the form of hollow cylinder with non-return valve and eccentric for interaction with distribution mechanism and is telescopically linked to adapter flange. Flange has radial and axial holes and is installed in upper cylinder of body. Distribution mechanism is fitted with case having conduits. Pressure branch pipe is located in upper part of case. Cylindrical spaces house plunger and control valve. Anchoring unit is fitted with case in which outer surface wedge dies are located. In transportation position dies are fastened by cylindrical locking arms. Spring-loaded bushing with axial conduits, non-return valve and outer annular groove for interaction with cylindrical locking arms is located on inner surface of case. EFFECT: enhanced oil recovery from pool thanks to more reliable operation of facility. 2 cl, 6 dwg _