drillingdoo.com

value of drillingdoo.com is about $8.95

In-seam Drilling for Gas Drainage - Rotary Drilling No directional control Excessive drilling metres Ineffective coverage Fatal Outburst can happen due to inaccurate borehole coverage Gas and Outburst Prevention Improvements in directional drilling technology Drilling rates comparable to that of rotary drilling Rotary drilling is still to be utilized where historically adequate All mines required to develop an Outburst Management Plan Directional drilling the only form of drilling to provide planned and verified coverage Introduction of Directional Drilling Oil field technology modified for underground Boreholes drilled with a down-hole motor Boreholes progressively surveyed for steering and to determine location Locate boreholes in desired horizon and location Key Components for Directional Drilling Suitable stable environment Experienced project supervision Experienced drillers Proven and competent procedures and training Drill rig with high pressure water pump Downhole motor PCD drill bits Survey system Suitable and safe site management Directional Drilling Environment Requires environment suitable to support directional drilling Target strata (coal or stone) has to be stable (drillable) High pressure ejects broken strata into borehole Fracture strata collapses into borehole Clay strata swells into hole with water contact Electro-hydraulic Drill Rig for Longhole Directional Drilling VLI Series 1000 Directional Drilling – Downhole Motor High pressure water pumped down drill rods is forced through the power section and rotates the drill bit Various torque characteristics and rotational speeds available Downhole Motor Deflection Standard 1.25 deg bend 96mm OD PCD bit 18.7mm deflection at bottom of the bit Provides the ability to be steered DHM Steering Control - Vertical Response Change in vertical angle over 6m – limited curve rate Drill Site Drill site provided to include all equipment Avoid interaction with mine transport movements High safety standards and operational procedures Ventilation requirements to manage gas, electrical requirements, water supply and pumping Gas/Water Management - Standpiping Fully grouted standpipe Pressure rated fittings Fittings seal borehole and control returns Pressure tested for known high pressure intersections Flat-faced PCD Bits 50% recessed 13mm cutters Exposed 13mm cutters Asahi bit with 13mm cutters 50% recessed 8mm cutters Convex face Borehole Surveying – DDMS (Directional Drill Monitoring System) Borehole Drilling Patterns From right to left: Rotary drilling initially Conversion to directional drilling Improved drilling and steering skills Progressive Seam Profile Definition Drill up to intersect roof Extrapolate seam roof line Pull back to suitable location and branch Advance 50-100m to next roof intersection drillingdoo.com was registered 5 years 11 months ago. It is a domain having .com extension. It is estimated worth of $8.95 and have a daily income of around $0.15. As no active threats were reported recently, drillingdoo.com is SAFE to browse.