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Diaphragm critical flow indicator DICT-50, DICT-100
For measuring gas flow while draining critical discharge through diaphragm with gas emission into atmosphere
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DICT-50 or DICT-100 is designed for measuring pressure in a well and may be integrated into a wellhead equipment.
DICT consists of body with a slick tubing thread as per GOST 633-80 on one end. On the other end – metric thread with a recess/seat for a diaphragm/orifice plate which is seated and compressed by a nut and handles. The other end is connected with flare line or welded into the line along with a choke.
A set of DICT has up to 29 diaphragms of various diameters (quantity may be changed upon Client’s request). An orifice of the diaphragm/orifice plate is selected based on specific well rate.
In addition, DICT can be fitted with a measuring tube which can be nippled up directly to DICT. Alternitavely, the tube can be connected using 3.5 inch tubing subs at a required distance. Then, pressure and temperature gauges can be set on the tube, and flow measurements can be taken in the flow section of the tube.
DICT consists of body with a slick tubing thread as per GOST 633-80 on one end. On the other end – metric thread with a recess/seat for a diaphragm/orifice plate which is seated and compressed by a nut and handles. The other end is connected with flare line or welded into the line along with a choke.
A set of DICT has up to 29 diaphragms of various diameters (quantity may be changed upon Client’s request). An orifice of the diaphragm/orifice plate is selected based on specific well rate.
In addition, DICT can be fitted with a measuring tube which can be nippled up directly to DICT. Alternitavely, the tube can be connected using 3.5 inch tubing subs at a required distance. Then, pressure and temperature gauges can be set on the tube, and flow measurements can be taken in the flow section of the tube.
A diaphragm with a small diameter calibrated orifice is installed in the DICT jam nut. Then open the root gate valve, start the well and wait for a steady state, when the pressure and gas temperature upstream of the DICT diaphragm and in the annulus are unchanged with time. The obtained values are recorded in the logbook, after that the well operation is stopped by closing the root gate valve.
Next, a diaphragm with a larger diameter calibrated orifice is installed in the DICT, a stable condition is waited for, pressure and temperature readings are recorded again, and then the well is closed. These operations are repeated 4, 6 or 9 times, depending on the number of available orifices.
To investigate the well with DICT, install an orifice plate on the end of the flare line, directed towards the HFC barn, and tighten the required orifice plate with a nut.
Next, a diaphragm with a larger diameter calibrated orifice is installed in the DICT, a stable condition is waited for, pressure and temperature readings are recorded again, and then the well is closed. These operations are repeated 4, 6 or 9 times, depending on the number of available orifices.
To investigate the well with DICT, install an orifice plate on the end of the flare line, directed towards the HFC barn, and tighten the required orifice plate with a nut.
Principle of operation
Technical specifications
DICT manufacturing options
Photo Gallery
FAQs
The diaphragm critical flow meter is designed for pressures of 35 and 70 MPa. depending on the version.
Yes, we offer a 1 year warranty on the Critical Flow Diaphragm Meter.
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