METHOD AND DRILLING SYSTEM OF SIDE-WELLS OF WELLS IN FORMATIONS OF CLAY SHAFT

摘要

At least several embodiments of the invention are methods comprising drilling an inclined hole in a shale formation using a drill string containing a drill bit; geophysical exploration of the shale formation using a logging tool installed in the drill string; assessment of the crack formation ability of a part of the shale formation near the drill bit, performed in real time during drilling based on information obtained using a logging tool; and drilling direction control based on fracture ability.