| 摘要 |
FIELD: devices for treatment of bottom-hole formation zone; applicable in oil, gas, geothermal and other wells for qualitative cleaning well zone of producing formation from technogenic foreign objects and other colmatants and production of efficient fractures in them. SUBSTANCE: jet implosive mechanism has sub with axial channel and radial ports, installed in the middle of implosive chamber and tightly joined with its halves. Both sides of axial channels of sub are tightly closed with implosive valves made in form of plungers connected with each other by shear member and are equidistant from radial chambers of sub and opposite ends of both halves of implosive chamber are tightly closed by plugs pushed out of them also made in form of plunger located in two end adapters with radial ports or plugs. Both halves of implosive chamber are equal in diameters and in length and opposite to each other and equidistant from radial ports of sub. Implosive valves are connected for possibility of regulation of their position relative to each other axial channel of sub and location of shear member between its radial ports. EFFECT: higher amplitudes of hydraulic impact actions on formation by depression and repression, reduced dynamic and reactive loads on device hanger in well and higher reliability of sealing of implosive chamber. |
