METHOD FOR DETERMINING PARAMETERS OF WELL PRODUCT Russian patent published in 2007 - IPC E21B47/01 

FIELD: oil industry, possible use during geo-physical and hydro-dynamic research of active wells.

SUBSTANCE: in accordance to invention, autonomous well device is lowered into the well below the oil degassing point in freefall mode. Pressure, liquid flow and water content of well product are measured and recorded. Branch pipes are used to close off access of well liquid to sensors with disconnection of internal space of the device from well space and then autonomous well device is lifted emersion mode under effect from force of liquid from below. On well mouth, upper position of autonomous well device is recorded by indicator of its upper position. Under effect of gravity, branch pipes which close off access of well liquid to sensors, are lowered and used to connect internal space of device to well space. Pressure, flow and water content in well product are recorded again. After extraction of autonomous well device from the well, combined processing of results of measurements and recording of pressure, debit and water content in well product below oil degassing point and at well mouth is performed.

EFFECT: increased precision when determining well product pars and capability for determining composition of well product.

3 dwg, 1 ex