Cable Type MWD 73 Center Drill Rod

While drilling survey drill pipe is generally required to be constructed in a complete coal seam (f ≥ 1) or a stable rock stratum (f ≤ 6); it is mainly used for the construction of gas drainage borehole and water exploration borehole in short horizontal and long-distance underground coal mine, and also used for the construction of ...

Wire-Line Core Barrels,Drill Rod,Overshot Assembly,Drill ...

Product introduction GYQ-200, GYQ-200A, GYQ-200B three kinds of drilling rigs are suitable for industrial and civil construction, highways, railways, bridge foundations, dam sites, water conservancy, water wells, prospecting and other engineering geological survey work, shallow oil and natural gas Mining, mine tunnel ventilation, drainage, and large-diameter foundation pile …

Digital Mine This is the Digital Mine Drill Guidance Solutions

the drill rods when used during directional drilling. The Downhole Unit measures the pitch, azimuth and tool face survey information ... survey tool for Directional Drilling in underground Coal mines for gas drainage, exploration and dewatering holes. This is operated entirely using the Touch Screen which provides easy access

Drill rod - Industry Knowledge - Xi'an Tydrillbits Co.,Ltd

Coal and natural gas; Drainage, coal mine; Drainage, coal mine ... 7 degree 108mm H22 H25 H19 taper drill rod is widely used in ore mining and rock drilling. Xi'an tydrillbits is one of the taper drill rods manufacturer and exporter in China. Jun 13. 2018. HQ drill rods for geological drilling.

Drill Rod - Utility Construction Equipment

Drill Rod for Ditch Witch® Rigs Call for pricing See Product; Drill Rod for Vermeer® Rigs Call for pricing See Product; Call for Pricing! (320) 274-7223. Search Products. Search for: Product Categories 9030 64th Street NW Annandale, MN 55302. 320.274.7223. [email protected] ...

Numerical Simulation of Integrated Mechanics of Drilling ...

It is widely used in the underground (high) drainage roadway of coal mine and gas drainage hole and hole-making hole in the construction of heading face of this coal seam. It is an integrated complete set of equipment for the efficient gas treatment of gas-bearing and low-permeability coal seams (as shown in Figure 1).

Solid-Gas Flow Characteristics of Drilling Bit-Rod ...

Before the coal sample is collected, the gas-coal flowed into the bit-drilling rod structure by the bit firstly and then to the drilling rod during the sampling process. And the gas-coal flow in the bit-drilling rod structure affected the sampling process.

Advanced Crawler Mounted DTH Drilling Rig

It is suitable for drilling holes with a diameter of 150 to 440 mm in hard ore rock. widely used. Down-the-hole (or cone) drilling rig consists of impactor (or drill), slewing mechanism, lifting mechanism, pressure device, walking mechanism, slag drainage system, drill frame, and drill rod.

China Cr50 Drill Rod, Drill Pipe - China Cr50 Drill Rod, Cr50

China Cr50 Drill Rod, Drill Pipe, Find details about China Cr50 Drill Rod, Cr50 from Cr50 Drill Rod, Drill Pipe - Forsun Ultra-hard Material Industry Co., Ltd. Sign In. ... Mainly used for gas drainage hole, also widely used for mining, geology exploration, hydroeceltric dam. Size Available/ Diameter: Ø 42, Ø 50, Ø 60, Ø 70, Ø 90mm

Nonlinear Dynamics Research between Drill Pipe and Coal ...

analysis of the underground gas drainage drilling rod was carried out by using the ANSYS finite element dynamic analysis module LS-DYNA method.According to the collision course between the drill pipe and the coal hole wall, the Lagrange algorithm is introduced to analyze the stress change of drill pipe in the

Home Made Gas Check Maker - Harden Drill Rod Type Punch ...

I am thinking about making my own gas check maker... i have read that the punch should be made from drill rod... the drill rod should be hardened, and then after is is finished annealed in the over at 500F for 1 hour... note: this will be for a simple two step punch: punch out the disc, then form in a die I will be using a small bench top lathe to make the punch... how do …

Characteristics Of Hydraulic DTH Drilling Rig In ...

Different drilling rigs can be selected according to the height and use of coal roadway. 2. Hydraulic drilling machine can put mesh pipe into the hole while drilling, which solves the key problem of gas drainage in high gas mine with unshaped perforation and soft coal seam. So this drill is also called pipe drill or pipe jacking drill. 3.

Underground Hydraulic Drill Rig | Drilling Equipment | CGEG

ZDY1550G drill rig has a wide range of speed that can be switched. It's convenient for users to adopt diamond, alloy and DTH hammer drilling. The power unit adopts chuck clamping drilling and chuck holder is used in combination to screw and unscrew the drill rod. This can increase labor efficiency and decrease labor intensity.

Mine Use Gas Drainage Hose Suction And Discharge Gas Hos ...

In order to ensure the safety of mine operation, the most common measure in coal mine production is to pump gas out of the special pipeline. The medium that passes through is the gas drainage pipe. The gas pipeline is dedicated to the gas in the coal mine. Pipeline, it can be seen that the performance of gas drainage pipe has a significant impact on the safe production of …

NSW: Safety alert following drill rod injury | Australian ...

The drill rods hit the operator's right hand, which was placed on the drill chuck. ... This type of drill rig is predominantly used for horizontal inseam gas drainage holes. The drill operator was experienced at operating the drill rig, but this was the first time he had used it to drill a vertical hole.

The high-efficiency spiral drill rod can meet the pratical ...

The high-efficiency spiral drill rod can meet the pratical needs for water and gas exploring and injection under the coal mine.it adopts square coupling for rods'connection,easy to assemble and disassemble.its tension-resistance can be up to 1323.89Mpa by using special steel material,smithing and heat treatment.

Implementation of underground longhole directional ...

These include drilling difficulties in complex conditions, insufficient drill rod strength, poor gas drainage efficiency in low permeability coal seams and the inconsistency of the local Chinese-made equipment. Further studies include systematic evaluation of the drilling applicability within different geological conditions, improving equipment ...

Drill Rod

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Safety Alert: Hand injured by fall of drill rods

operator. This type of drill rig is predominantly used for horizontal inseam gas drainage holes. The drill operator was experienced at operating the drill rig, but this was the first time he had used it to drill a vertical hole. The drill operator's off-sider did not have strong experience using the drill rig or in drilling vertical holes.

miningst.com

the drill string could travel back (sometimes at least 15m) PRACTICAL (DEMONSTRATION) PLAN AND PREPARE tv Al c: ASSESSMENT CONDUCT DRILL RIG OFFSIDER 12. 13. 14. ASSESSMENT CRITERIA - OPERATION OF MACHINE Demonstrate removal of six (6) rods to the drill string check with oPerator when rod is undone and ready to be removed (CRITICAL) …

N/WL NR/WL Drill Rod for Diamond Coring Drilling

Based on the depth of drill bore, WL series wireline core drill rods are classified into A and B grades. A grade drill rod is entire-length or ends thermal processed and B grade drill rod is entire-length processed. Material:30CrMnSiA or 45MnMoB(A grade), XJY850 or BG850( B grade) WIRELINE DRILL RODS OFFERINGS

Different Sizes Round HDD Drill Rod Transportation Of Oil ...

High Drilling Rate HDD Drill Rod Good Flushing Effect For Coal Mining . Specifications: To guarantee premium quality product, all products material is sourced from Shanghai Baosteel specially developed hot rolling high strength alloy structure tube for oil and gas drilling tools without considering about high cost.

Drill Rod Lateral Vibration Mechanics during Mining ...

Through the condition analysis of the drill rod during the mining horizontal drilling for gas drainage, the finite element model of the drill rod lateral vibration is established. The drill rod lateral vibration is related to the diameter and length of the drill rod. With the increase of the diameter of the drill rod, the natural frequency of the lateral vibration of the drill rod increases ...

China Geological Diamond Core Drill Rod Wire Line Drill ...

China Geological Diamond Core Drill Rod Wire Line Drill Pipe, Find details about China Bw Drill Rod, Bwj Drill Rod from Geological Diamond Core Drill Rod Wire Line Drill Pipe - Forsun Ultra-hard Material Industry Co., Ltd. ... Mainly used for gas drainage hole, also widely used for mining, geology exploration, hydroeceltric dam. Size Available ...

Mobile Gas Drainage Pumping Station,Mobile Gas Drainage ...

Inroduction of Mobile Gas Drainage Pumping Station The mobile gas drainage pumping station is mainly used for gas drainage and gas energy collection in the coal industry, which helps to avoid people's life and property safety accidents caused by gas explosion, and at the same time solves the traditional underground ventilation device drainage.

miningst.com

Slide a drill rod through the rotation unit and the rod holder. The chuck and the rod holder will need to be open. 2. Fit the required drill bit and tighten. ... The majority of gas drainage holes are currently drilled using rotary drilling equipment. Two types of rotary drilling equipment are used: 1. Hydraulic e.g. Kempe rigs.

Pipe Cutters in Gas, Pipe & Drain Installation|Plumbing Tools

Price. £0.00 - £999.99 98 items. £1,000.00 and above 2 items. Pipe Cutters at Trade Counter Direct. A Pipe Cutter is a type of tool used by plumbers to cut pipe. Besides producing a clean cut, the tool is often a faster, cleaner, and more convenient way of cutting pipe than using a hacksaw, although this depends on the material of the pipe.

Core Drilling Cr42 Cr50 Drill Rod Drill Pipe - Buy Drill ...

Introduction: From WLA to WLP, Parallel Threaded Drill Rods, DCDMA sizes AW-HW, and Metric sizes 42mm to 90mm, tapered threaded drill rods, DCDMA sizes AWY to NWY, AWJ, BWJ and S75 drill rods. Used for the mineral exploration with a high quality! Material: Drill rod body with high quality alloy steel pipe, drill pipe joint with high quality alloy steel.

History - Sigra

Drill rod testing and design with the application of underground directional drilling; Well control as applied to underground gas drainage boreholes; Safety shut off valves for gas drainage ranges; Flow meters for gas drainage monitoring; The consulting work involved aspects of coal mine safety, particularly in respect of: ...