SYSTEM FOR AUTOMATIC MEASURING OF VOLUME GAS CONTENT AND REAL DENSITY OF DRILLING FLUID Russian patent published in 2007 - IPC E21B44/00 

FIELD: measuring equipment, particularly for oil production industry, namely for drilling rigs.

SUBSTANCE: system comprises measuring module, pneumatic module and electronic module. Measuring module is made as vertical pipe with upper and lower chambers. Installed in lower chamber of measuring module is selecting device. Differential pressure sensor is installed in vertical pipe. Total pressure sensor and drilling fluid supply level indicator are located in upper chamber. Upper chamber of measuring module is connected with pneumatic module by means of two pneumatic pipes. Pneumatic module includes vacuum pump, electric drive and three pneumatic electrovalves. Measuring and pneumatic modules are connected with electronic module through electric links. Electronic module is adapted to control system operation, as well as to record and transmit information.

EFFECT: increased measurement accuracy and reliability, as well as improved reliability of automatic measurement system operation.

7 cl, 2 dwg