FIELD: oil producing jet units.
SUBSTANCE: proposed formation tester contains jet pump, unit for connecting and disconnecting tubing string, valve unit with seat for valve insert with check valve, packer and liner with intake funnel, all mounted on tubing string from top to bottom. Jet pump housing accommodates coaxially installed active nozzle and mixing chamber, and channels are made to deliver active medium, pumped out of well and stepped through channel with seat between steps. Possibility is provided for in-turn mounting of sealing unit and interlock insert with through channel which are arranged on flexible smooth pipe higher than tip for connecting self-contained logging complex and insert for recording pressure built-up curves I underpacker space of well under which self-contained instruments are installed for recording pressure, temperature and other physical parameters of well and forming fluids. Invention provides intensification of investigation, testing and preparation of wells, mainly, horizontal and high curvature wells, optimization of operation of jet pump used together with self-contained logging complex and other functional insets for investigation of producing formation.
EFFECT: improved reliability and increased capacity of operation.
3 cl, 3 dwg
