METHODS AND SYSTEMS FOR DRILLING BOREHOLES

摘要

A system for drilling a borehole according to the present invention includes a drill rig and a control system. The drill rig includes a drill, an air injection system and a water injection system. The control system, which is operatively associates with the drill rig, receives information from the drill rig that relates to at least one drill parameter. The control system processes information relating to the drill parameter, determines whether the drill parameter is within a predetermined specification for the monitored drill parameter, chooses a hole defect mitigation routine based on the monitored drill parameter when the monitored drill parameter is outside the predetermined specification, and controls the drill rig to implement the chosen hole defect mitigation routine.

主权项

1. A system for drilling a borehole, comprising:
a drill rig comprising an air injection system, a water injection system, and a drill, the drill comprising a drill bit; a control system operatively associated with said drill rig, said control system:
monitoring a plurality of drill parameters during a drilling phase and a retraction phase, the drilling phase ending when the borehole has been drilled to a predetermined depth and the retraction phase beginning following completion of the drilling phase,receiving information from said drill rig relating to at least one drill parameter,controlling said drill rig, storing program steps for program control, and processing data,automatically implementing a collaring routine to form a collar in the borehole; and said control system processing information relating to the drill parameter, determining whether the drill parameter is within a predetermined specification for the monitored drill parameter choosing a hole defect mitigation routine based on the monitored drill parameter when the monitored drill parameter is outside the predetermined specification, said hole defect mitigation routine comprising at least one drilling phase defect mitigation routine and at least one retraction phase mitigation routine, said control system controlling said drill rig to implement the chosen hole defect mitigation routine.