Study on Autogenous Heat Technology of Offshore Oilfield: Experiment Research, Process Design, and Application

Table 14

Program of plugging removal and draining in well A23.

Stage	Frequency (Hz)	Running time (hr)	Estimated drain speed (m^3/hr)	Discharge fluid volume every stage (m^3)	Estimated cumulative liquid discharge (m^3)
1	35	4	5-7	20	20
2	40	6	5-7	30	50
3	45	8	5-7	40	90
4	Power frequency		5-7		>220

Note: the estimated discharge velocity is calculated according to the rated displacement of the pump.