SHARIFOV'S MANDREL INSTRUMENT TO MEASURE WELL PARAMETERS Russian patent published in 2010 - IPC E21B47/00 E21B47/06 

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to hydrocarbons production and can be used for measuring pressure and/or temperature in whatever zones of fill-in or pressure-observation well with one or several operating objects, particularly, in simultaneous - separate production or injection, or analysis of formations of one well. Mandrel instrument comprises tool extractor and case consisting of top, central and bottom tightly jointed parts and furnished with hydraulic channels (HC), inner and outer grooves accommodating upper and lower sets of sealing gaskets (SG). Case lower part is provided guide tip arranged on its bottom or has a tip-like shape. Said tip has no HC or has one or several HC and/or fixation element. Case central part accommodates sealed main measuring system (MS) consisting of PCB with connected for connection to PC, power supply and transducer. The latter is connected with at least one case HC. Instrument is arranged in mandrel off-center pocket - well chamber. To measure and record dynamics of well parameters and/or back-up or dual measurement of well parameters, instrument if furnished with one or several additional identical MS. Note here that additional MS can be tightly placed in case lower part under lower set of MS and/or in case upper part or in tool extractor above upper set of SG, and/or in case central part between MS instruments. Note also that transducers of additional MS are connected with inner and/or outer mandrel space via appropriate HC.

EFFECT: higher efficiency and reliability of mandrel instrument.

11 cl, 9 dwg