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Figure 11.2 – The diagram recorded during measuring the bottom
hole and formation pressure (the diagram of pressure change).

11.2.5 Technology and technique for carrying out
the downhole measurements

Such devices as downhole lubricator (lubricator) and drawworks

are used to put the downhole pressure gage or other downhole device
down into the well.
Fig. 11.3 shows the chart of the equipment of the wellhead of the

flowing, gas-lift, injection and observation oil well during downhole
measurements.
The downhole lubricator (lubricator) is a section of the tubing
pipe of the length from 1.5 to 4 m with the thread on one side

and flange on the other. Stuffing box 4 is screwed on the upper part of
the downhole lubricator (lubricator). The stuffing box seals wire 6.
The diameter of the downhole lubricator (lubricator) is 60 – 102 mm.

For lowering downhole devices into the wells the movable
laboratories with drawworks “AzINMASH” are used.
In particular, in drawworks “AzINMASH-11” the rotation of the
drum is carried out from the lorry engine by a transmission shaft

which is connected by a chain gear with the box of power take off.
The drawworks which are used for lowering downhole devices
down into the well by means of the wire have two gears which ensure

raising the device with speeds in the range from 0.85 to 6.14 m/s.

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