drilling well with bottom pilot bit replaceable tci steel tooth tricone bit cutter 28 inch hole opener

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US $1,000-7,500 / Pieces | 1 Piece/Pieces hole opener (Min. Order)
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Quick Details
Place of Origin:
Hebei, China (Mainland)
Brand Name:
Kingdream Llilin Deris
Model Number:
Drill Bit
Machine Type:
Drilling Tool
tungsten carbide insert
Processing Type:
Well Drilling
Product name:
hole opener
sealed type:
rubber sealed,metal sealed
bearing type:
journal bearing
oil&gas,water well,exploration etc
high carbon steel/tungsten carbide insert
2 3/8"-7 5/8" API REG.PIN
pilot bit size:
8 1/2",12 1/4" 14 3/4" tricone bit
soft,medium to hard rock drill
Wear Resistant
USA,Middle East,South/North America
600 Piece/Pieces per Week hole opener
Packaging & Delivery
Packaging Details
wooden box,iron box or as your requirements
Tianjin port,Beijing Airport
Lead Time :
within 7 days or as your requirement
Product Description
drilling well with bottom pilot bit replaceable tci steel tooth tricone bit cutter
28 inch hole opener 


Hole Openers can be quoted with new/unused surplus or used Steel Tooth or TCI Cutters Hole Openers.


At some point it may be necessary to increase the size of a pre-drilled hole to a larger diameter or to drill large diameter holes. Hole opener bits are designed specifically for this purpose. Bits are custom manufactured in a wide range of styles to meet field requirements. A custom hole opener is an effective way of enlarging holes, hence the name "Hole Opener".


The Hole Opener Advantage

Straighter Holes - By drilling a smaller hole with a "pilot" bit, then attaching that said bit onto the bottom of the the hole opener. The hole opener will follow the path of the hole drilled by the smaller bit.

Larger Holes with Smaller Rigs - By drilling a hole in stages, larger holes can be drilled with smaller rigs. A smaller hole requires less power.

Replacing Cutters and Cutting Cost - On most Hole Opener designs, the cutters can be easily replaced. The cost to replace a cutter is a fraction of the cost to replace a large tricone rock bit.

Cost of Large Rock Bits - Larger diameter rock bits not only cost a lot, they can be difficult to find. A more economic solution is to use a hole opener that uses smaller tricone rock bit segments..

Flexability - Hole Openers can be fabricated in just about any size, and can be configured to drill through any formation.

Operational Considerations

Drilling Weight - The choice of drilling weight is determined based on the recommendations of the bit manufacturer and the number of cutters on the hole opener.

Number of Cutters - The number of cutters placed on a hole opener is governed by the following facts:

1.Maximum number which will fit around the perimeter.

2.The greater the number of cutters, the less the weight, which therefore reduces the penetration rate.

3.In softer formations, less weight is needed to penetrate.

4.The greater the number of cutters, the smoother the tool will run.

5.The greater the number of cutters, the greater the cost.

6.The greater the number of cutters, the longer the cutters will last

Rotary Speed - Maximum speed is determined by the manufacturer's recommendation and the calculation to account for the linear distance the cutter is moving per revolution.

Hole Cleaning - A frequently over looked point of hole opener operation is hole cleaning. The volume of cuttings to remove from a hole increase by a squared factor with an increase in hole diameter.

(Bit sizes and cone types can be customized as you special order)


                    Bit Type














 TCI Bit




417 427  437 416 446 447 445 415 425 435 436

 517 527 537 617 627 637 737 837 832  525 625 635 516 526  537 547 516 536  535


most favourable price and best qualtity

bearing type:

sealed bearing and non-sealed bearing

HJ(metal sealed journal bearing)  

HA (rubber sealed journal bearing

aircooled bearing type

Formation or layer

soft ,medium soft ,hard,medium hard,very hard formation

Button size (extra features)

Button bit,saw teeth

1) Y-Conical teeth  2) X-chisel teeth

3)K- wide teeth

4)G- Gague protection


Alloy steel ,carbide


Wooden case or steel case

Payment terms

T/T,L/C,Western union

Delivery terms

By sea or by air

Delivery time

Within 3 to 7 days


Canada, USA,Middle east ,Africa,Europe


petroleum&gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, directional boring, and underground foundation work




 Usage of Hole openers

Horizontal Hole Openers, also known as HDD Reamers, are used to enlarge the pilot hole in Horizontal Directional Drilling(HDD) - HDD is used when trenching and excavating is not practical. This drilling technology allows for a steerable trenchless way to drill underground.


There are three stages:

1>the first stage is to drill a small diameter pilot hole.

2>The second stage is enlarge the hole with a larger diameter cutting tool called an HDD Reamer, rock reamer or hole opener.

3>The third stage is inserting the casing pipe or other product into the enlarged hol

Pictures show:

TCI tricone bit cutters hole opener


Contact Us

 If you need realiable service and wear resistant bit to improve drilling efficiency and profit and reduce drilling cost .Please contact with me . 

How to contact ?  

Send your inquiry detail in the below  Click Right button "Send " now or Add my whatsApp+86 15128708428

Please specify the following on enquiry,

Bit diameter
Drilling formation
guide bit/pilot bit diameter
cutters type
Thread Connection



Selling Units:Single item
Single package size: 95X97X170 cm
Single gross weight:500.0 KG
Package Type:plywood box
Our certification:



Our Factory


Hejian Deris Petroleum Drilling Equipment Co., Ltd established in 2000 ,is a professional manufacturer and supplier of drilling tools-Tricone bit,PDC bit,Hole opener,drag bit ,drilling pipe etc . Located in the Junziguan industrial park,Hejiancity ,Hebei province ,China

Our principle -Doing a professional job that meets our customers needs

Quality policy-Pefect teamwork to provide hig quality products to our valuable customers as per their requirements on time

Objectives-Usage of best raw material and on time delivery . Quality checking at every stage. Immediate action upon customer complaints Adopt of up date for the enhencement of performance


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