METHOD OF SIMULTANEOUS SEPARATE OR SUCCESSIVE PRODUCTION OF RESERVOIR FLUID FROM WELL OF MULTIPAY FIELDS WITH PRELIMINARY INSTALLATION OF PACKERS

摘要

FIELD: oil and gas industry.;SUBSTANCE: method includes separate run and installation in well of the pipe string with packer system for two production reservoirs comprising packers, between packers pipe, perforated branch pipe and polished insert. At that top packer has directing funnel and maximum possible diameter of the through channel sufficient for pipes and devices assembly passage. Separate run of pipes string equipped with electric submerged pump, tail, bottom secured pump equipment, or remote control unit, or tight or untight casing of the electric drive presented by string of pipes or rods, on which as least one packer separated reservoir liquid flows, controlled electrical or electromechanical valves regulating or disconnecting fluid supply from the reservoirs to the well, units of sensors monitoring work parameters of the reservoirs, sensors are located within the perforation depth of each production reservoir or above perforation depth of each production reservoir. At that pressure and temperature sensors are located under solenoid or electromechanical valves, thus ensuring regulation of the bottom hole pressure and control of the reservoir pressure and temperature. Humidimeters and flowmeters are located above the solenoid or electromechanical valves or under the solenoid or electromechanical valves. Control of the solenoid or electromechanical valves and information exchange with units of sensors of work parameters of the reservoirs are performed over the both separate electric line having at least one core, or as forth core of submersed power cable of the electric pumps, or via separate electric line instead of the forth core of the submerged power cable of the electric pumps, or from "zero point" of the electric submerged pump, or from the remote control system of the electric submerged pump. If electric line is routed over casing of the submerged motor can or can not be used the insert out of electric line with small diameter closed against mechanical damages by the protective enclosure or by protectors, or can be closed or unclosed against mechanical damages by the enclosure installed similarly to the cooling enclosure of the electric-centrifugal pump. The tail can be equipped or unequipped with emergency disconnector with shear elements designed for definite load, with stroke compensator of thermobaric changes of length of pipes string. Based on the data provided by sensors the optimal modes of simultaneous separate or successive operation of the productive well reservoirs are determined. Determination of the optimal operation modes of the reservoirs and their further updating are performed by operation of valve units that control operation of the reservoirs under automatic or manual modes, automatic system of operation control of the well system ensures remote on-line monitoring of the field development system and to make corrections to operation modes of the well reservoirs.;EFFECT: improved efficiency of well control upon simultaneous and separate operation.;4 dwg