METHOD OF DEVELOPMENT OF WELLS AND TESTING OF FORMATIONS IN PROCESS OF SWABBING (VERSIONS) Russian patent published in 2008 - IPC E21B43/25 E21B47/00 

FIELD: mining.

SUBSTANCE: group of inventions refers to oil field processes, particularly to process of multiple-cycle hydro dynamic testing of formation in various modes. The method consists in pressure tight shutting of tested interval from the rest part of the borehole with a packer in a flow column (FC), in lowering of underground swabbing equipment into FC on a geophysical cable, in lowering of a swab at a specified depth and in following lifting the swab with a fluid volume from the well. Above the packer in FC a complex swabbing apparatus is installed; the said apparatus operationally controls the inflow of fluid, coming from the formation, and it (apparatus) provides transfer of data to a well head via the cable lowered along the flow column in annulus space. After initiation of inflow from the formation, reduction of fluid level in FC and transfer of information of process parameters of swabbing a cavity of FC is isolated from the formation with an electro-mechanical packer and by means of pressure sensors pressure changes over a time are registered above and below the electro-mechanical packer. Characteristics of the formation are determined on inflow and formation pressure restoration over a time curve.

EFFECT: provides efficient determination of parameters with upgraded accuracy, and eliminates occurring after-inflow from formation.

2 cl, 2 dwg