FIELD: oil and gas industry.
SUBSTANCE: sensors are placed into a bed surrounding a well bore. A device is placed to realise the method into a well bore. The well bore zone is isolated. The pressure is changed in the zone with the help of making changes into the flow via a valve. Bed pressure is measured at a location of each sensor, and the received data is sent to an antenna array. Pressure is measured in the zone by a pressure gauge. Horizontal and vertical permeability of the bed is identified using the received measurements. At the same time the device comprises a bed tester (BD) lowered on a drilling string. The BD is equipped with a packer to isolate the well bore zone. The BD comprises a valve to control the fluid flow via a drilling string of a tool into the zone and from the zone and a pressure gauge to measure the pressure in the zone. The device additionally comprises an array of at least two antennas. Antennas are assembled on the tool above the packer so that in process of usage each antenna of the array is balanced with the appropriate pressure sensor placed into a bed, to obtain pressure measurement and to determine horizontal and vertical permeability.
EFFECT: possibility to characterise permeability of a bed in two dimensions, horizontally and vertically.
14 cl, 6 dwg
