| 摘要 |
FIELD: oil industry.SUBSTANCE: invention relates to oil production and can be used for oil displacement from oil-bearing strata to producing wells. Program-controlled injection well comprises a casing pipe, tubing string (TS), packers, wellhead shutoff-bypass valves, power pump with variable frequency drive, gas-liquid ejector-mixer, tank with surface-active substance (SAS), booster pump and hydraulic lock interconnected by pipelines, a control station, power cables, feed pumps and control valves made as a telemetry system unit with a possibility of program-controlled maintaining of formation pressures by means of a command controller with software, and a possibility to record consumption of working fluid by means of sensors and a flow meter arranged in cavities of cases in parallel to the telemetry system unit housing and connected with instruments at control station. Telemetry system unit is connected with the upper seal device of the packer consisting of movable joints of smooth nipples and end unions, the latter are installed on a straight-flow multichannel coupling forming coaxial flow channels. Connected to the central channel of the straight-flow coupling is a tubular shank tightly installed with its opposite end in the central hole of the coupling built-in into the pipe string between packers and having radial flow channels connecting the coaxial flow channel of the seal assembly with the upper formation of the well, and a central flow channel - with the bottom formation through the cavities of the shank and the lower Packer shaft. TMS unit branch pipe is connected to the tubing string by a connector coupling with through slots, and is also connected with the control device by a logging cable passed through a slot of the connector coupling and a lubricator. Additional packer with a cable entry is connected to TS, which, together with the packer installed above the upper formation, forms a pressure header, connecting the tubing string through the slots of the connector coupling with the TMS unit via openings in the housing wall. Logging cable is connected to TMS unit by a cable connector, the female end of which is fixed in the branch pipe, while the pin is fixed at the bottom of the connector coupling. Pipes, connecting packers above formations, are tightly connected by movable isolating coupling. Gate valves and check valves are built into the gas supply pipeline and SAA supply pipeline.EFFECT: technical result consists in improvement of flow rate of oil-bearing strata of the well.5 cl, 1 dwg |
