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Yiguang Science and Technology Patent Special-shaped Multi-edge Groove Drill Pipe Operation Instructions
Release time:
2019-07-01
Author:
Source:
Shandong Yicuang Drilling and Production Technology (Group) Co., Ltd. Special-shaped Multi-edge Groove Drill Pipe Operating Instructions 1. Product Performance Overview Special-shaped Multi-edge Groove Thrust Slag Drainage Drill Pipe, referred to as Heavy-duty Three-edge Groove Drill Pipe, is a new type of drilling tool product newly developed by our company for coal mine tunnel drilling, which has wide adaptability to coal seam hardness coefficient. Department of our company's invention patent (invention patent number: ZL 200910064973.0) is widely used in high gas coal seam, especially soft coal seam deep hole drilling construction. The production of the outer triangular transmission type grooved drill pipe, hexagonal double pin quick connection tensile type grooved drill pipe, large hole screw.
Shandong Yiguang Drilling and Mining SectionTechnology (Group)Limited Company
Instruction for use of special-shaped multi-edge grooved drill pipe
1. product performance overview
Special-shaped multi-edge grooved thrust slag discharge drill pipe, referred to as heavy triangular grooved drill pipe, is the latest research and development of our company coal mine tunnel drilling this coal seam gas drainage drill pipe, the coal seam hardness coefficient of the adaptability of the new drilling tool products. It is an invention patent of our company (Invention patent number:ZL200910064973.0）It is widely used in deep hole drilling construction of high gas coal seam, especially soft coal seam. separately produced.External triangular transmission type grooved drill pipe, hexagonal double pin quick connection tensile type grooved drill pipe, large hole threaded connection type grooved drill pipe, hexagonal double pin quick connection tensile type geological spiral drill pipe and other series products. Among them, the hexagonal double-pin quick-connect tensile type can perform the reverse function of the drilling tool and can withstand it.Drawing force of 350kN. In a reasonable bit diameter difference (10-15mm) Under the design conditions, the spiral groove thrust slag discharge structure is added on the basis of the triangular greasy smear stirring protection hole. Selection of high-quality joints and rod body materials by friction welding, machining center CNC machine tool finishing, with high torque, high wear resistance, to adapt to high speed drilling performance characteristics.
2.Analysis of the main advantages
This series of drill pipe inRotation in loose cinder can induce vortex flow, relying on the edge of the drill pipe to raise the pulverized coal deposited at the bottom of the borehole, the pulverized coal in the hole is always in motion, thus avoiding the accumulation and blockage of pulverized coal in the borehole; At the same time, the discontinuous spiral groove distributed on the surface can assist the cinder to be transported outward, and when the hole collapses in the hole, it passes throughHole stripping function of spiral groove, pass through the collapsed hole. Therefore, it is not easy to cause the phenomenon of drilling and sticking.
The principle of vortex flow along the axial direction of the rigid body caused by the rotation of the special-shaped multi-prismatic rigid body in loose cinder. When the drill pipe is buried by loose cinder in high-speed drilling, a slag discharge channel (vortex zone) can be formed in several grooves around the drill pipe to allow the slag discharge airflow to pass through. The airflow or water flow is fed through the inner hole, and the cinder is discharged through the slag discharge channel to reduce the rotation resistance of the drill pipe. At the same time, discontinuous spiral grooves are arranged on the surface of the rod body to assist the coal cinder to be transported outward. When the hole collapses in the drill hole, the hole collapses are transported outward through the hole stripping function of the spiral groove.
The main body circular grooved drill pipe, rib drill pipe and special-shaped multi-edge grooved drill pipe all have cooling function, especially the latter has directional righting function (not easy to collapse holes, good hole forming quality), taking into account multiple slag discharge principles, and will become the main drilling tool for gas extraction deep hole drilling.Compared with the current coal mine gas drainage using smooth round drill pipe and ordinary triangular drill pipe, because the rod body has no groove structure, protruding coal seam, especially soft coal seam, should not use hydraulic slag drilling. Dry drilling lacks cooling function under blockage (cinder cannot move along the axial direction).
Comprehensive comparison, special-shaped multi-edge grooved drill pipe,Hole protection, pressure relief, centring and coolingFour efficacy.
3. Use Cases
At present, the special-shaped multi-edge grooved drill pipe produced by our company has successfully solved the problem of deep hole drilling in high gas and soft coal seams, at present, it has been widely used in Longmei Jixi Mining Group Company (Didao Coal Mine, Chengzihe Coal Mine, Xinghua Coal Mine), Liaoning Tiefa Coal Industry Group Company (Daping Coal Mine, Daxing Coal Mine, Xiaonan Coal Mine), Yangmei Group Company (Xinyuan Coal Mine), Lu'an Group Company (Yuwu Coal Mine), Jinmei Group Company (Pingshang Coal Mine, Duanshi Coal Mine) and Xishan Coal, and has been the various mining group companies, coal mine first-line use units of praise.
4. Operation Precautions
1. Before the drill pipe is connected, the male and female screw threads should be coated with thread grease to ensure the strength of the screw threads when the drill pipe is connected.
2. The standard matching drill diameter of this series of drill pipes is Φ85mm, the maximum matching drill bit diameter is Φ94mmIf the drill bit diameter exceeds Φ94mmIn the process of drilling, the effect of rotating and greasy wiping the hole wall will be greatly reduced, which will easily lead to the occurrence of holding and hole collapse.
3. When the drilling pressure is normal, the drill pipe can be pushed forward normally. When the drilling pressure is too high, the rotating speed of the drilling rig should be appropriately reduced to keep the low speed. If the drilling pressure continues to be too high, the drilling of the hole should be abandoned decisively and the opening position should be selected again.
4. This series of drill pipes are mainly for ventilation and slag discharge, and can also be suitable for feng shui linkage. regular drilling is mainly for ventilation. When holding drill and hole collapse occur, water injection and slag discharge can be carried out as appropriate.
6. technical performance parameters
|
Line Number |
Specifications and modelsmm |
Build Discussion Drill Hole Deep Degree |
TorqueN.m |
Adapter drilling rig |
|||
|
Diameter of drill pipe |
Length |
Joint form |
Wall thickness |
||||
|
1 |
F42 |
800～1500 |
ConePingThread |
10mm |
150m |
3500 |
ZQJC Pneumatic Drill Series ZDY hydraulic drilling rig series |
|
2 |
F50 |
800～1500 |
ConePingThread |
10mm |
200m |
5200 |
|
|
3 |
F63.5 |
800～1500 |
ConePingThread hexagonal drive |
12mm |
250m |
8000 |
ZDY hydraulic drill series CMS spindle drive drilling rig |
|
4 |
F73 |
800～1500 |
ConePingThread hexagonal drive |
12mm 16mm |
300m |
10000 |
|
|
5 |
F89 |
800～1500 |
ConePingThread hexagonal drive |
16mm |
≥400m |
12000 |
|
Key words:
Drill pipe, special-shaped, geological drill pipe, spiral drill pipe, triangular drill pipe, new coal drill pipe
