Because of the big stratigraphicdip in the well Dong 9, it is hard to keep the well bore quality by means of conventional deviation control measures.
东9井由于地层倾角大，用常规防斜措施难以保证井身质量。
2
Fractures in deep Eogene clastic rock of Qibei area has been analyzed through core description, scanning micro fissures by electron microscope, testing fracture wrap, and stratigraphicdip logging.
A stratigraphic high resolution dipmeter tool that uses four dual electrodes on pads to record eight microconductivity curves for high-density dip calculations.