METHOD FOR DETERMINATION OF LOCATION OF LEAKAGE OF A PRODUCTION STRING OF GAS AND GAS-CONDENSATE WELLS

摘要

A method for determination of location of leakage of production string of gas and gas-condensate wells includes measurement at the mouth of change of technological characteristics at packer lowering. The well is shut-down, with bleeding pressure in tubing-casing annulus, with leveling pressures in pipe and annular spaces, after that liquid packer is injected to pipe space. The packer at moderate lowering temporarily closes the place of leakage of production string, its depth is determined with account of change of value of gas loss from tubing-casing annulus in time while lowering liquid packer.