FIELD: oil and gas production.
SUBSTANCE: procedure for evaluation of unit operation of installation for well repair on base of analysis of chart of data of unit position consists of following stages: when pipes are lifted from a well there is evaluated the first point of data on a chart of data on unit position; there is determined, if the unit has extracted a section of the pipe from the well; further, there is determined, if the first point of data is near upper limit value on the chart of data of unit position; unit motion is allowed for extraction of pipe section from the well in case of negative result; and in case of positive result the unit is stopped. Therefore, an operator of the installation can obtain and follow data on display on position of the unit during introduction or withdrawal of pump rods or production pipes. An operator obtains on-line data on display in form of a chart relative to maximal and minimal positions controlled by the operator; this facilitates assessment of unit position prior to moment, when it comes into position beyond boundaries of an upper frame or floor of the installation for well repair. Also, such procedure allows the operator to determine speed of the unit during operation by assessing data of coder speed found in the coder speed chart.
EFFECT: reduced hazard of emergency at round-trip operation during well repair.
19 cl, 15 dwg
