Geological Exploration Use with Various Sample Collection Hq3, Pq3. Ntw, Htw, Hq3 Diamond Reamer

• Type: Core Drill
• Usage: Coring
• Certification: CE, ISO
• Application: Reaming
• Industry: Geological Survey
• Payment Term: Tt or LC
• Model NO.: AQ, BQ, NQ, PQ, HQ, SQ, , HQ3, PQ3. NTW, HTW, HQ3
• 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:

When using diamond reamers, there are several common problems that can arise. Here is additional information on these problems and their potential solutions:

1. 1Cutter wear: Diamond reamers may experience wear on their diamond cutters, especially when drilling through abrasive formations or encountering unexpected hard spots. This wear can lead to reduced cutting efficiency and a shorter tool lifespan.

Solution: To address cutter wear, reamer designs can incorporate backup cutters or multiple rows of cutters strategically placed along the tool. These backup cutters help prolong the tool's life and maintain cutting efficiency as the primary diamond cutters wear down. Additionally, optimizing drilling parameters such as rotational speed and weight on bit can minimize wear and extend the lifespan of the diamond cutters.

1. 2Cutter damage or breakage: Despite their hardness, diamond cutters can still be susceptible to damage or breakage, particularly when encountering hard objects or experiencing excessive impact loading.

Solution: Selecting diamond reamers with appropriate cutter designs for the specific drilling conditions can mitigate cutter damage or breakage. Reamers with advanced cutter geometries, such as impact-resistant or chisel-shaped cutters, offer increased durability and resistance to damage. Implementing proper drilling practices, such as maintaining consistent weight on bit and avoiding excessive shock loading, can also help prevent cutter damage and extend the tool's lifespan.

1. 3Poor cuttings evacuation: Efficient removal of cuttings from the wellbore is essential for optimal drilling performance and to prevent tool and formation damage. Insufficient cuttings evacuation can lead to clogging or packing of the reamer, resulting in reduced drilling efficiency, increased torque, and potential hole cleaning issues.

Solution: Diamond reamers can be designed with optimized hydraulic features, such as spiral flutes or specially shaped junk slots, to improve cuttings evacuation. Additionally, adjusting drilling parameters such as mud flow rate and flow properties can optimize cuttings transport and prevent clogging. Close monitoring of the drilling operation and making necessary adjustments ensure efficient cuttings evacuation throughout the drilling process.

1. 4 Stuck or lost-in-hole reamers: Reamers can become stuck or lost in the wellbore, leading to costly fishing operations and potential drilling delays. This can occur due to factors like differential sticking, wellbore instability, or equipment malfunctions.

Solution: Preventive measures include proper wellbore stabilization, effective drilling fluid management, and drilling optimization techniques. Implementing suitable centralization techniques, using appropriate drilling fluids, and conducting regular wellbore stability analysis help reduce the risk of reamer sticking or loss. In the event of a stuck or lost reamer, specialized fishing tools and techniques can safely retrieve the tool.

It's important to note that the specific problems encountered and their corresponding solutions vary depending on drilling conditions, formation characteristics, and operational parameters. Consulting with drilling experts, reamer manufacturers, and experienced personnel is crucial to identify and address specific challenges encountered during diamond reamer usage.

 

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

Q&A:
Q1: What challenges arise when reaming highly permeable formations?
A1: Lost circulation risks require optimized fluid systems, controlled pressures avoiding fluid losses into natural fractures/solution channels weakening integrity. Aggressive centralization handles uneven hole conditions without spiraling out of control.

Q2: Why is coordination important between all well construction phases?
A2: Reaming enables casing/cement jobs delivering zonal isolation platform. Casing prepares liner installations accessing pay intervals. Cleaning removes restrictions facilitating completions equipment placement. Integrated teamwork delivers the well architecture as economically planned from spud to first production.

Q3: What considerations apply when reaming depleted reservoir sections?
A3: Subsidence risks necessitate pressure control minimizing fracture reactivation through fluid density/pressure adjustments. Strength evaluation informs stabilization against loose rubble reducing drag. Cement isolation eliminates commingling reservoirs.

Q4: How do carbonate karst zones impact equipment selection?
A4: Erosion unpredictability challenges centralized cleaning necessitating stringent guidance elements keeping reamer centered in open hole to maintain wellbore quality without spiraling off course. Aggressive bits withstand irregular surfaces.

Q5: What interplay exists between pressures and hydraulics in reaming?
A5:downhole pressure gradients matched against pore pressures optimize hydraulics preventing losses without inducing fractures if exceeded. Efficient circulation cleans without swamping and stalling reaming at necessary pressures managed through rig surface system capabilities.

 

 

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