METHOD OF LIQUID DENSITY DETERMINATION IN WELL Russian patent published in 2015 - IPC G01N9/26 

FIELD: oil and gas industry.

SUBSTANCE: pressure in zone of borehole pump is determined using the fixed transmitter, and pressure ay gas-water border in the annulus P_glb is determined by calculation using Laplace-Babine equation upon presence of information relating temperature and supercompressibility factor z. If such data are absent for the well the required pressure P_glb is calculated similarly to the liquid phase, namely as sum of the wellhead pressure and additional pressure created by the gas column from wellhead to liquid level. The required liquid density is determined based on the obtained pressure values in the pump zone and at gas-liquid border.

EFFECT: assurance of the possibility to obtain information with required intervals, as well as reduced work price relating information acquisition on liquid density in annulus.

1 dwg