PROCESS OF GAS SAMPLING THROUGH WELL Russian patent published in 2001 - IPC

FIELD: oil and gas industry. SUBSTANCE: invention can be used specifically to raise pressure of natural and side gases under field conditions when preparing them for transportation or when pumping them into gas-condensate deposits with use of cycling process, to compress gas or air while wells are exploited. Process includes sinking of two-row lift. Its internal pipe id lowered below external pipe. Gas and fluid mixture is taken into interpipe clearance with rate higher than that of floating up of bubbles of gas in fluid with provision for its separation in bottom part, gas is sampled into hole clearance of external pipe and fluid is taken into internal pipe. Prior to sinking lift along internal lift string well pump is installed, lowered to calculated depth and set in operation after supply of gas and fluid mixture into intertubular clearance. Gas line of hole clearance of external pipe is adjusted to pressure at which level of fluid in shaft of well after separation of gas should stay in interval between shoes of lift strings. EFFECT: expanded application field and enhanced degree of compression of gas. 1 cl