Secoroc Rock Drilling Tools

Secoroc PARD system

Percussion Assisted Rotary Drilling

Secoroc PARD System– a boost for rotary drilling

Atlas Copco has been in the mining and con-struction market for many years and is commit-ted to innovative, productive, market leading solutions such as QL technology for DTH hammers. Thanks to that we now present our latest innovation for Rotary drilling - the Secoroc PARD System - designed to boost rotary drilling performance.

Combining the best of DTH and Rotary

drilling technology

Targeted at mines seeking step-change technology that yields lower operating costs, the Secoroc PARD System opens new potential for rotary drillers. We’ve developed lightweight, fast cycling, low impact DTH hammers with specially adapted tricone drill bits and added it onto standard rotary drill rigs and drill strings. The result? A combination of percussive power and rotational force that increases ROP up to 50%.

The most cost efficient

holes in the market

Thanks to our DTH expertise, we can fine tune the Secoroc PARD ham-

mer with the aid of a unique parallel air-flow system. By operating as low as

50-110 psi, drilling costs are reduced and kept down to a minimum, by drilling more holes per shift than ever before. That means better productivity, not to mention lower total drilling costs!

Easy to install and operate

We’ve also thought about the operator. Installing the Secoroc PARD System is easy and requires nothing to be changed on the existing drilling operation. This simple installation merely means adding an oiler and

a starter drill pipe. Once the correct starter drill pipe, hammer and bit are in place, just tune the airflow and you’re underway. And we’ve also found that Secoroc PARD System makes collaring a lot smoother!

Specially designed for productivityLet's take a look at the technology behind the Secoroc PARD System:

High energy output hammerThe Secoroc PARD hammer has been developed to increase rotary drilling productivity. This low impact hammer has a special short stroke lightweight piston. A synergy combination is formed between this tuned hammer and the rotary forces which results in the Secoroc PARD system creating a higher level of energy than a DTH hammer or rotary power alone. And that means a lot more holes per shift.

Unique airflow system

The Secoroc PARD system has a unique parallel airflow system that directs the air down two paths. One path goes into the hammer and facilitates the percussion action. The other path channels the air, via the properly installed bit nozzles, through the Secoroc PARD tricone drill bits and cleans out the hole. This facilitates efficient cuttings removal, excellent hammer cool-ing and optimal efficiency. And the Secoroc PARD system operates at the same pressure as conventional compressors, being 50–110 psi.

Special tricone drill bits

There is a fine line between high penetration and long service life. That’s why we designed Secoroc PARD tricone bits to retain the same service life as standard tricone bits while increasing ROP by up to 50%. We’ve achieved this by adapt-ing Secoroc PARD tricone drill bits to withstand additional stresses and strains. All this adds up to greater productivity and lower cost per foot drilled.

Available in two models

The Secoroc PARD system is de-signed for drilling medium to hard rock blastholes from 9 7/8” to 12 ¼” (25cm-31cm) in diameter.

They are available in two models: Secoroc PARD 10 and Secoroc PARD 12 with a selection of Secoroc PARD tricone bits.

Tried and tested– here are the views of a few customersNorth American Gold Mine, USA

At a mine in northern Nevada, parameters used to test the Secoroc PARD 10 System were exactly the same as those used for standard bits. The only exception was air pressure.

The first hole of 45 ft was drilled in 8 minutes. The driller was impressed, mentioning the area being drilled normally takes about 10-13 minutes to drill the same depth. He also commented that using the Secoroc PARD System was definitely faster than using a standard rotary drill bit. He also felt that the hammer was smoother to collar the hole since it suppressed some of the vibrations experienced with a standard rotary bit during the first 10 ft of the hole. Compared to conventional rotary drilling, the Secoroc PARD System is drilling 100 ft/hr or 30% faster.

Aitik Mine, Sweden

Prior to testing with the Secoroc PARD 12 System, bits were taking 45-60 minutes to drill 17 m holes. This means a ROP of around 22.7 m/hr at the most.

With the Secoroc PARD 12 System, the first 10 holes' ROP was increased by an average of 48%. The bit ran a total of 1,110 m, which was approximately 10% greater than the normally expected bit life.

System used Holes Footage Drilling

hours Drilling rate

PARD 15 705 2.2 323.1

Standard rotary 8 375 2.0 190.1

”...drilling five holes to one, compared to other bits”

”...reduces overall vibration experience”

”...smoother to collar the hole”

”...drills faster than any of our other bits”

Cerro Verde Mine, South AmericaThe Secoroc PARD 10 System was tested at Cerro Verde Mine starting in a hard rock formation of around 200 to 250 MPa and a RQD of 75–90%.

The bit life in this area is generally 900 to 1200 meters, with a ROP of 16 to 20 m/hr.

At this particular place in the mine, it was taking 60 minutes to drill each hole to a depth of 16.5m. With the Secoroc PARD system, the time was reduced to less than 30 minutes.

The penetration rate had been 20 m/hr, while with the Secoroc PARD System, 40 meters per hour was acheived – no less than twice the ROP!.

Tricone rotary drill bits

Size Product No. Product code IADC Product Special features Circ.Weight

PIN conn.Operating suggestions WOB/RPMlbs kgs

9 7/8" 91002046 1B6-3251-54-PA-CAH-02 5-4-2 PARD 10Conical inserts, Armor, Hard nose on cones

Jet 120 60 6" BECO29,625-49,374 lbs / 50 to 150 RPM

9 7/8" 91002143 1B6-3251-64-PA-CAHW-02 6-4-2 PARD 10Conical inserts, Armor, Hard nose on cones, Wear resistant carbide

Jet 120 60 6" BECO39,500-69,125 lbs / 50 to 120 RPM

10 5/8" 91002065 1B6-3270-64-PA-CAHW 6-4-2 PARD 10Conical inserts, Armor, Hard nose on cones, Wear resistant carbide

Jet 148 67 6" BECO42,500-74,375 lbs / 50 to 120 RPM

12 1/4" 91001815 1B6-3311-62-PA-OAH-02 6-2-2 PARD 12Conical inserts, Armor, Hard nose on cones

Jet 225 102 6 5/8" API49,000-85,750 lbs / 50 to 120 RPM

Secoroc PARD System specifications

Hammer

General specifications Secoroc PARD 10 Secoroc PARD 12Product No. 52354538 52354637

Product code 9710-09-95-00 9712-09-95-00

Connection - backhead 6 5/8" API Reg. Pin

Connection - shank adapter 6" BECO Box

Outside diameter - hammer 8.6 inch 218.4 mm 9.5 inch 241.3 mm

Outside diameter - shank adapter 8.6 inch 218.4 mm 10.0 inch 254 mm

Length w/o shank adapter - shoulder to shoulder

35.0 inch 889 mm 39.6 inch 1005.8 mm

Length with shank adapter - extended 44.7 inch 1136.4 mm 48.8 inch 1239.5 mm

Length with shank adapter - retracted 42.9 inch 1090.4 mm 47.2 inch 1198.9 mm

Weight w/o shank adapter & drive pins 414.3 lbs 187.9 kg 543 lbs 246.3 kg

Weight with shank adapter & drive pins 570.7 lbs 258.8 kg 770.0 lbs 348.8 kg

Backhead flat dimensions 1.75 x 7.6 AF 44.45 x 209.55 1.75 x 8.25 AF 44.45 x 209.45

Shank adapter flat dimensions 2.25 x 7.6 AF 57.15 x 193.8 2.25 x 8.45 AF 57.15 x 214.6

Bore 6.46 inch 164.1 mm 7.1 inch 180.8 mm

Piston weight 60.9 lbs 27.7 kg 81.7 lbs 37.1 kg

Piston diameter 6.46 inch 164.1 mm 7.1 inch 180.5 mm

Tricone rotary bit size 9 7/8", 10 5/8" 12 1/4"

Recommended operating parameters20,000-60,000 psi / 100-400 MPa / RPM & WOB will be normal for bit type being used

Atlas Copco Secoroc ABBox 521, SE-737 25 Fagersta, Sweden

Phone: +46 223 461 00E-mail: secoroc@se.atlascopco.com

www.atlascopco.com

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Please contact your local sales office to obtain quote for your Secoroc PARD solution.