SIAM SUDOS-mini 2, Руководство по эксплуатации

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4.3.1.
Requirements to the test object

Construction and operation of a well should be performed in
accordance with "Safety rules in the oil and gas industry".

All Tested well, irrespective of its application and operation mode,
should have a technological tap equipped with a valve and a wave metering
tool seating nipple. A fluid level determination is possible only in that
space of the well (tubular, tubular annulus, hole annulus, string annulus)
which connects with the operating technological tap. While carrying out
the measurements, there should not be any neckings (connections,
dosimeters and similar tools) in the tap. The nipple of the technological tap
should be placed at the height of 0.2 - 1.8 m above the ground. Taper
joining thread should be 60 according to GOST 633-80. When the nipple is
at the height of more than 1.8 ft above the ground, it is necessary to use
stationary or portable platforms if they are appropriate to the "Safety
regulations for the oil and gas industry”. The nipple which is not being
used at the moment should be blanked off.

In the way of an acoustic pulse, not more than two bends of the
tubing at the angle of 90° and at the distance of 65.6 ft away from the
nipple are admissible.
4.4.
Requirements to the test object
4.4.1. Surface equipment preparation

Make sure that the valve of the technological tap and a pressure
gauge are in running order.

Check that the pressure in the well tested annulus is in the range of
maximum permissible pressure of the tool. When using the exhaust
receiver supplied with the level gauge, ensure that its operating
pressure does not exceed the maximum response pressure of the
solenoid (electromagnetic) valve.

Remove the end cap from the technological nipple. Clean the taper
thread from sludge, oil, sand and etc. Check the compliance of the tread
with the requirements mentioned above. In cases when a thread type does
not comply with the requirements, as well as if there is an undue wear,