Research on integrated technique of oil testing in horizontal well

Aiming at the requirement of oil testing in casing perforation completion horizontal wells with casing size in ?139.7 mm, research on oil testing string and process has been conducted on the basis of finishing analyzing well trajectory characteristics and oil testing specialized technique demands for horizontal wells. An annular volume static hydraulic pressure packer has been developed though improving impedance locked ahead step by step and compulsory relocation and adopting static hydraulic pressure mechanism. By selecting switch control mode and control signal identification mode, pressure controlled electric multi-phrase testing valve for horizontal wells has been developed, and then the corresponding oil testing strings was formed, which take the annular volume static hydraulic pressure packer and pressure controlled electric multi-phrase testing valve as main tools. Trial test has been launched in Gao30 Well P1 and worked pretty well, which marks that a newly type practical oil testing matching technology is formed for horizontal wells.