FIELD: mining.
SUBSTANCE: inventions group relates to mining, in particular to devices for separating the zones of casing strings during repair, isolation and research work. The electric driven packer, in the first version, contains a hollow bore, a body, electric drives, an anchor, a collar with a stop, mounted on the bore with the possibility of transferring the packer from the transport position to the working position. The packer barrel is made with a shoulder, with an emphasis on which a slip assembly and a module with a pressure sensor and a stop valve are installed, fixed with a retaining ring. The collar is installed on the barrel with an emphasis on the cone, movably mounted on the barrel, interacting with the anchor slips. The housing is located above the upper push stop, in which there are at least two reversible electric drives, the drive shafts of which are connected by screw pairs with push rods in contact with the push stop. Above the body is a second module containing a second pressure sensor and a second shut-off valve, fixed on both sides by retaining rings. Radial channels are made in the borehole wall, connecting the block valves of the modules with the under-packer and over-packer cavities of the well through the borehole cavity to equalize the pressure when the packer is transferred from the working position to the transport position. The electric drive packer, in the second version, contains two blocks on the hollow bore, consisting of housings with at least two reversible electric drives located in them, the drive shafts of which are connected by screw pairs with synchronously reciprocating push rods, and a module with a pressure sensor and shut-off valve, fixed on the barrel on both sides by locking rings, with one block located above the upper pressure stop of the cuff, and the other block under the slip assembly, with which the ends contact the pressure rods. At the ends of the modules and in the borehole wall, channels are made that communicate the shut-off valves with the under-packer and above-packer cavities of the well through the borehole cavity with the possibility of equalizing the pressure to transfer the packer from the working position to the transport one. Electric drives, pressure sensors and shut-off valves are connected by a telemechanical system or an electric cable laid along a channel outside the barrel with a control station, with ability to synchronously perform reciprocating movements by push rods along the length of the working stroke.
EFFECT: invention increases reliability of sealing the separation of the casing and well operation.
6 cl, 4 dwg
