Increased Drilling Stability High Diamond Concentration Diamond Reamer in Drilling Industry

• Type: Core Drill
• Usage: Coring
• Certification: CE, ISO
• Application: Reaming
• Industry: Geological Survey
• Payment Term: Tt or LC
• Model NO.: PQNQHQNTWHTWNQ3HQ3
• Product Name: Reaming Shell/Reamer
• Thread Type: Pi, Metric, Dcdma etc.
• Surface Finish: Smooth
• Material: Diamond
• Coating: Natural Diamond or Man-Made Diamond
• Heat Resistance: High
• Cutting Edge: Sharp
• Transport Package: Nude/Wooden Case/Carten
• Specification: PQNQHQNTWHTWNQ3HQ3
• Trademark: BEST
• Origin: China
• HS Code: 82071910
• Production Capacity: 500000 Pieces/Year

Product Description

Product Description:

Some additional details about the functions and features of diamond reamers in drilling conditions:

1. Reaming Shell Design: Diamond reamers, also known as reaming shells, are typically cylindrical in shape and consist of a metal body with embedded diamond segments or a continuous layer of diamonds on the working surface. The diamonds provide the cutting action, while the metal body provides stability and support.

2. Diamond Segment Configuration: The diamond segments on a reaming shell are strategically arranged to optimize cutting performance. The segment configuration can vary based on the specific drilling conditions, such as the hardness of the rock formation and the desired drilling speed. Common segment configurations include various patterns of single-layer, multi-layer, or spiral diamonds.

3. Diamond Grit Size: The diamond grit size used in reaming shells can be selected based on the hardness of the rock being drilled. Finer diamond grits are typically used for softer formations, while coarser grits are used for harder formations. The choice of diamond grit size affects the cutting efficiency and the rate of diamond wear during drilling.

4. Waterways or Flushing Channels: Many diamond reamers feature waterways or flushing channels that allow drilling fluid (such as water or drilling mud) to flow through the reaming shell. These channels help carry away drilling debris, cool the diamonds, and lubricate the cutting surface. Effective flushing is crucial for maintaining cutting efficiency and preventing heat buildup.

5. Core Recovery Optimization: Diamond reamers play a role in optimizing core recovery during drilling. By enlarging the borehole, the reaming shell helps minimize core jamming or sticking, which can occur when the core barrel encounters resistance while retrieving the core sample. A properly sized and designed reaming shell can enhance the success rate of core recovery.

6. Compatibility with Different Rock Formations: Diamond reamers are available in various configurations to suit different rock formations encountered in drilling operations. The selection of the appropriate reaming shell depends on factors such as rock hardness, abrasiveness, and geological conditions. Different diamond types, diamond sizes, and cutting patterns can be chosen to ensure optimal performance in specific rock formations.

7. Reaming Shell Lifespan: The lifespan of a diamond reamer depends on several factors, including the quality of the diamonds, the drilling conditions, and the maintenance practices employed. Over time, the diamonds on the reaming shell wear down, reducing their cutting efficiency. Proper monitoring, maintenance, and timely replacement of the reaming shell are essential to maximize its lifespan and maintain drilling performance.

8. Reaming Shell Size Range: Diamond reamers are available in a range of sizes to accommodate different borehole diameters. The selection of the reaming shell size is based on the desired borehole diameter and the size of the core bit being used. It is important to choose a reaming shell size that matches the core bit size to ensure compatibility and efficient drilling.

9. Advanced Reaming Technologies: Advancements in drilling technology have led to the development of specialized reaming techniques. For example, some reaming shells incorporate polycrystalline diamond compact (PDC) cutters instead of traditional diamond segments. PDC reaming shells offer enhanced cutting efficiency, longer lifespan, and improved performance in certain drilling applications.

These additional details provide a deeper understanding of the functions, features, and variations of diamond reamers in drilling conditions. By considering these factors, drilling professionals can make informed decisions when selecting and utilizing diamond reamers to achieve optimal drilling results.

 

Model or type:
 

Specifications

ITEM	DIAMOND BIT					Reaming shell
"Q" Series Wireline assembly	Size	Bit Outer Diameter		Bit Inner Diameter
		mm	inch	mm	inch	mm	inch
	AQ	47.60	1.88	26.97	1.06	48.00	1.89
	BQ	59.50	2.35	36.40	1.43	59.90	2.36
	NQ	75.30	2.97	47.60	1.88	75.70	2.98
	HQ	95.58	3.77	63.50	2.50	96.00	3.78
	PQ	122.00	4.80	84.96	3.35	122.60	4.83
Metric T2 Series	36	36.0	1.417	22.0	0.866	36.3	1.429
	46	46.0	1.811	32.0	1.260	46.3	1.823
	56	56.0	2.205	42.0	1.654	56.3	2.217
	66	66.0	2.598	52.0	2.047	66.3	2.610
	76	76.0	2.992	62.0	2.441	76.3	3.004
	86	86.0	3.386	72.0	2.835	86.3	3.398
	101	101.0	3.976	84.0	3.307	101.3	3.988
T Series	TAW	47.6	1.875	23.2	1.31	48.0	1.89
	TBW	59.5	2.345	44.9	1.77	59.9	2.36
	TNW	75.3	2.965	60.5	2.38	75.7	2.98

Reaming classification
T series	T36,T46,T56,T66,T76,T86
Cable series	AWL,BWL,NWL,HWL,PWL(Front end,rear end)
WT series	RWT,EWT,AWT,BWT,NWT,HWT(single tube/double tube)
T2/T series	T256,T266,T276,T286,T2101,T676,T686,T6101,T6116,T6131,T6146,T6H
WF series	HWF,PWF,SWF,UWF,ZWF
WG series	EWG,AWG,BWG,NWG,HWG(single tube/double tube
WM series	EWM,AWM,BWM,NWM
Others	NMLC,HMLC,LTK48,LTK60,TBW,TNW,ATW,BTW,NTW,AQTK NXD3,NXC,T6H,SK6L146,TT46,TB56,TS116,CHD101

 

 

FAQ:

1, What safety precautions are required when using diamond reamers?
Operators must wear appropriate personal protective equipment including sturdy boots, hard hat, eye protection, dust mask and gloves. Guards shield exposed parts. Proper ventilation removes dust. Signage warns of machinery hazards and restricted access is enforced when reaming is underway.
2, What is dressing a diamond reamer and when is it necessary?
Dressing refers to using an abrasive stick or wheel to grind or remove the worn outer layer on the cutter face and expose fresh diamonds for continued drilling. It restores cutting ability and is done periodically as penetration rates decrease significantly.
3,How does dressing help extend the life of a reamer?
By removing a thin layer of worn material, dressing exposes new, sharp diamonds for cutting. This restores aggression and improves drilling rates without needing a full reamer changeout as soon as diamonds become fully blunted from use. It can potentially double the service hours of a single reaming tool.
4,What fluid is typically used during reamer drilling and why?
Water-based drilling fluid or slurry is generally used for its cooling and lubrication properties. It washes cuttings away from the face, carries debris out of the hole, and reduces friction and heat generated during cutting. Some use muds for stability in loose ground.
5,How does the drilling fluid help the cutting process?
The fluid cools the cutting face, flushes cuttings from diamonds, reduces impact damage and abrasive wear. It also helps reduce downhole torque and drag on rods during reaming and facilitates cuttings removal from the bottom of the borehole.

 

 

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