WELL OPERATION DEVICE Russian patent published in 2008 - IPC E21B43/00 E21B47/00 

FIELD: oil industry, particularly to design optimal bottomhole pumping facilities for efficient well operation without well overhaul.

SUBSTANCE: method involves stopping well, decreasing liquid level in well; recording pressure recovery curve and processing obtained data. Liquid level in well is decreased by multistage swabbing operation up to well filling with reservoir fluid. Each swabbing stage is accompanied by pressure recovery curve recording. After well filling with reservoir fluid two additional swabbing stages with pressure recovery curve recording are carried out. Averaged productivity factor value is determined from two last pressure recovery curves. To interpolate pressure recovery curve section from pressure recovery initiation to point of curve inflection as it reaches asymptote is selected. After that downhole equipment is chosen so that downhole equipment has characteristics corresponding to calculated data. Well is operated in regimes corresponding to chosen equipment.

EFFECT: increased accuracy of well productivity coefficient determination, downhole equipment choosing and operational regimes selection.

1 ex, 1 dwg