The ultra-short radius sidetracking horizontal well technology can be used to develop the unproduced oil layer outside the original well surface, expand the oil drainage area of the developed oil layer, and drill through the interlayer to make the adjacent well drilled on the basis of the structure of the old well. Reservoir connectivity, thereby increasing old well production. This technology has positive significance for the economical and rational development of remaining oil reservoirs in old wells in Daqing Oilfield.

Daqing Drilling's "Research and Application of Ultra-Short Radius Horizontal Well Drilling and Completion Technology" project was established in January 2020. It has successively overcome technical problems such as ultra-short radius and high build rate orientation, small wellbore wall stability, and horizontal section trajectory control. Selecting tools and instruments such as high-deflection multi-angle screw, high-strength titanium alloy drill pipe, high-performance drilling fluid system, and ultra-small size while drilling tools, the ultra-short-radius horizontal well technology has been continuously improved, and the curvature radius is less than 30 The drilling and completion technology of ultra-short radius horizontal wells with a horizontal section of more than 200 meters.