FIELD: oil producing industry; testing facilities.
SUBSTANCE: invention relates to pumping facilities. Proposed ejector multifunctional formation tester has mechanical or hydromechanical packer installed on tubing string for fixed positioning in released state in well at preset depth, jet pump accommodating nozzle and mixing chamber with diffuser in its housing, and stepped through channel is made with possibility of fitting functional inserts, for instance, functional insert for recording pressure built up curve. Jet pump is located in casing string over well producing formations, self-contained logging complex is installed lower than packer on tubing string for measuring, for instance, specific electric resistance of rock or for action onto formation by physical fields, for instance, acoustic fields, and second additional packer is installed being made of elastic material in form of open-top cup with conical side wall. Cup bottom is hermetically secured on tubing string, and ring is arranged on rubbing string lower than additional packer for centering packer in casing string, distance between packers being not less than outer diameter of tubing string in place of mounting of additional packer. Thanks to it intensification of investigation and testing of wells with open or cased hole, primarily crooked or horizontal ones, optimization of arrangement of packers at their operation together with jet pump and self-contained logging complex are provided.
EFFECT: improved reliability of operation of well jet plant.
2 cl, 1 dwg
