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Address: Xiaoshang Village,Jinzhou City,Hebei province,China
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Diesel Power Core Borehole Drill Rig With 200 mm Diameter For Drill
GK-200 Core Borehole Well Drill Rig Main Descriptions
GK-200 Water Well Drill Rig is high-speed vertical-shaft light drill for engineering exploration, and it has been widely applied to the geo - exploration of industry, civil building, railway, bridge, hydro power engineering, etc.It is characterized by high rotation speed and it is applicable to core drilling with small-caliber diamond drill bit.GK-180 Water Well Drill Rig is light shallow hole drill rig with hydraulic automatic feeding mechanism.Its structure is compact, and the pump is mounted on the drill bottom frame, which occupies a smaller area.
Drill Rig parameters
| GK- 200 Drilling rig | |
| Drilling depth | 200m |
| Drill rod caliber | 42mm |
| Hole diameter | 75mm |
| Drilling angle | 90°-75° |
| Dimensions | 2120*875*1480mm |
| Weight(without power unit) | 750kg |
| Swivel head | |
| Spindle speed | 71,182,310,790r/min |
| Spindle stroke | 450mm |
| Upward displacement speed of idling vertical spindle | 0.05m/s |
| Downward displacement speed of idling vertical spindle | 0.067m/s |
| Spindle pull-down max. | 15KN |
| Spindle lifting capacity max. | 25KN |
| Spindle max.torque | 1.5KN.m |
| Brake diameter | 278mm |
| Brake belt width | 50mm |
| Hoist | |
| Max. lifting capacity | 20KN |
| Hoisting drum revolution | 20,39,85,170r/min |
| Drum diameter | 140mm |
| Wire rope diameter | 9.3mm |
| Wire rope capability | 40m |
| Oil pump | |
| Model | YBC-20/125 |
| Rated presure | 12.5Mpa |
| displacement | 20ml/r |
| rated speed | 800-2500r/min |
| Water pump | |
| Displacement max. | 95(77)L/min |
| Working pressure max. | 1.2Mpa |
| Rated pressure | 0.7Mpa |
| Liner diameter | 80mm |
| Piston stroke | 100mm |
| Power(diesel engine or motor) | |
| Rated power | 16.2KW |
| Rated speed | 2200r/min |
The advantages of water well drilling rigs
1. Based on the concepts of oblique shear index, anisotropy index and comprehensive cutting preparation anisotropy index of drilling machine bit, the general agricultural formula and simplified form of formation natural deflecting force suitable for the actual bit, volume crushing and surface crushing of drilling machine are derived; The calculation formulas of formation variable merging oblique force and formation variable azimuth force in directional drilling are derived by using the drilling machine WOB cone method, which provides the analysis basis of formation force quota for directional and orbit control of drilling machine. It is verified that the theoretical analysis results are in good agreement with the drilling practice.
2, The formation with small orientation is the flapping force and formation variable positioning force, spoon well inclination angle, WOB, formation dip angle, drilling machine bit anisotropy index, formation anisotropy index, borewell azimuth and formation up dip azimuth force, which may also be the reduced azimuth force. In general, the formation variable deviation force makes the drill bit trajectory of the drilling machine close to the formation normal direction, and the formation variable azimuth force makes the well bore orientation close to the formation inclined direction. When the well bore orientation of the drilling machine is consistent with the formation dip orientation, the formation azimuth changing force is zero.
3, Based on the new concept, the critical formation dip equation is found out, which provides a preliminary quantitative explanation for judging the bit trend of drilling machine.
The formation force of the drilling machine is directly proportional to the WOB. Increasing the WOB will significantly increase the formation force
