MECHANICAL SUBDIVISION WATER PLUGGONG TECHNOLOGIES IN DAQING OILFIELD

This paper introduces the research and application of mechanical subdivision water plugging technologies at high water cut stage in Daqing Oilfield, especially the principles of technologies developed since 1990:sliding sleeve measuring-plugging technology, suspenslon mechanical subdivision water plugging technology, hydraulic multi-layer water plugging technology and hydraulic slide rail three-layer water plugging technology. This paper also makes a preliminary discussion to the developing prospect and direction of mechanical water plugging technologies.