System and method for controlling a drilling path based on drift estimates

摘要

A method includes receiving toolface information corresponding to a location of the bottom hole assembly (BHA) with respect to a target drilling path and drift information. The surface steerable system calculates a first toolface vector from a first location of the BHA to the target drilling path to create a convergence path to the target drilling path and calculates an adjustment of the first toolface vector to a second toolface vector to account for system drift defined by the drift information such that the BHA will converge with the target drilling path by drilling in accordance with the second toolface vector. The surface steerable system modifies at least one drilling parameter to alter a drilling direction of the BHA based on the calculated second toolface vector and transmits the at least one drilling parameter to the drilling rig to target the BHA in accordance with the second toolface vector.

主权项

1. A method for drilling, comprising:
receiving, by a surface steerable system coupled to a drilling rig, BHA information from a bottom hole assembly (BHA) located in a borehole, wherein the BHA information corresponds to a first location of the BHA with respect to a target drilling path and geological formation drift information; calculating, by the surface steerable system, a first toolface vector to create a convergence path from the first location of the BHA to the target drilling path that does not account for geological formation drift; calculating, by the surface steerable system, an adjustment of the first toolface vector to a second toolface vector to account for the geological formation drift defined by the geological formation drift information such that the BHA will converge with the target drilling path by drilling in accordance with the second toolface vector; causing, by the surface steerable system, at least one drilling parameter to be modified in order to alter a drilling direction of the BHA based on the calculated second toolface vector; transmitting the at least one drilling parameter to the drilling rig to target the BHA in accordance with the second toolface vector; and drilling the borehole using the BHA in response to the at least one drilling parameter.