BOTTOM-HOLE ZONE CHARACTERISTICS DETERMINING SYSTEM IN STRIPPED WELLS Russian patent published in 2017 - IPC E21B47/10 

FIELD: mining.

SUBSTANCE: invention relates to investigation of wells characteristics. Disclosed is system for rapid determination of bottom-hole zone characteristics in stripped wells to implement express method to determine characteristics of bottom-hole zone in stripped wells during their development, containing: well pressure reducing device to below formation pressure; echo sounder for measuring level recovery curve; sampler for liquid sampling at pumping during development cycle; liquid density measuring facility produced at pumping during development cycle; fluid viscosity measuring device produced at pumping during development cycle (μ sP); oil-saturated thickness measuring device; fluid evacuation cycle final elevation measuring device; level measuring device during level recovery in an hour (H1, m); next development cycle initial elevation measuring device (HH, m); level recovery time measuring device (t, h); volume of liquid produced during pumping over the last development cycle measuring device (V1, m³); remote formation zone permeability (k, D); skin factor calculation facility; well development suspension or continuation decision making tool. At that, system is made with possibility to: if skin factor value is positive, suspensions of well development and making decision on suspension of using this well treatment at other facilities having identical characteristic of reservoir; if skin factor value is negative, continuation of well development and its putting into operation, as well as making decision on possibility of using this well treatment at other facilities having identical characteristic of reservoir, wherein all system components are made with possibility of being installed directly on investigated well.

EFFECT: technical result is possibility of conducting operative well monitoring simultaneously with its development stage.

1 cl, 8 dwg