ROTARY STEERABLE DRILLING DEVICES AND METHODS OF USE

摘要

The invention provides rotary steerable devices and methods for use of rotary steerable devices. One aspect of the invention provides a rotary steerable device including: a cylinder (202a) configured for rotation in a wellbore, the cylinder having a slot (206a) and a gauge (204); and at least one cam (208a) received in the slot. The cam is configured for selective actuation between a first position, wherein the cam lies within the gauge of the cylinder, and a second position, wherein the cam is displaced out of the gauge of the cylinder.