Mixed Medium Drilling with a Single Bit â Drilling from Whipstock to TD
Oil and gas in tight formations with low porosity and/or permeability are often accessed using horizontal wells. In certain scenarios multiple horizontals are drilled from a single wellbore to create a multilateral well to increase production potential without the need for larger surface facilities. In drilling multilaterals, a retrievable whipstock assembly is used to kick off each additional horizontal. This project seeks to evaluate a new economical whipstock design and develop the tools necessary to design a bit that may both kick off the lateral as well as drill the horizontal to the target length; a process currently requiring multiple bits. This will reduce the time necessary to drill a multilateral well, reduce environmental impacts and improve production potential of wells in Alberta, throughout Canada and around the world.