Casing Advance System

DKI’s Casing Advance Systems allow for the simultaneous advancement of casing as big as 24″ in diameter, while drilling through fractured rock with a conventional down-the-hole air hammer. Depending on the drilling application, DKI customizes its casing advance system for either permanently left in the hole casing or retrieved (pulled-out) casing. Additional customization options are available based on the specifics of the drilling project, the actual casing and DTH hammer used, and the ground formation and conditions.

New Arrival

WING KING SYSTEM

Concentric-Type Casing Advance Systems:

The DKI Concentric-Type Casing Advance System features a simple, yet robust and proven, design comprised of a Pilot Bit, a Casing Shoe and a Heavy-Duty Ring Bit. The pilot bit securely locks into the ring bit via special locking lugs to form the robust oversized-looking face of a conventional hammer bit – loaded with premium grade of carbide buttons.

The unique locking mechanism also allows for direct transfer of energy from the hammer to the drilling surface of the ring bit and the pilot bit, which in turn ensures a superior penetration rate. The casing pipe is easily welded to the casing shoe, which threads into the ring bit to sit unrestricted on its shoulder, thus, preventing the casing pipe from rotating during the drilling operation and securing it at the same time.

DKI Standard Casing Advance System

Key Features

Casing Size  Casing Diameter Ring Bit Diameter (in) Hammer Shanks
OD ID OD ID

4               in

mm

4.50

114.3

4.03

102.4

4.875

123.8

2.250

57.15

IR3.5, COP 34, COP32, 3015, 

MACH 30/33

5               in

mm

5.56

141.2

5.05

128.3

5.935

150.8

3.135

79.6

QL4, IR340, SD4, M04. M40, MACH 44

T040

6               in

mm

6.63

168.4

6.07

154.2

7.016

178.2

4.125

104.8

QL5, IR350, SD5, M50, MACH 50

8               in

mm

8.63

219.2

7.98

202.7

9.015

229

5.925

150.5

QL6, IR360, SD6, M60, MACH 60

10            in

             mm

10.75

273

10.02

254.5

11.250

285.8

8.250

209.6

QL8, IR380, SD8, M80, T090, MACH 80

12             in

mm

12.75

323.9

11.94

303.3

13.500

343.9

10.050

255.3

QL8, IR380, SD8, SD10,

N100

14             in

mm

14.00

355.6

13.13

333.5

14.500

368.3

11.300

287

SD10, N100, QL120, IR112, SD12, N120, N125

16             in

mm

16.00

406.4

15.00

381

16.750

425.5

13.500

343.9

QL120, IR112, SD12,

N120, N125

18             in

mm

18.00

457.2

16.88

428.8

18.750

476.3

15.500

393.7

QL120, IR112, SD12,

N120, N125

20            in

mm

20.00

508

18.81

477.8

20.750

527

17.300

439.4

QL120, IR112, SD12, N120, N125, IR112S, SD15, N180, SD18, QL200

24            in

mm

24.00

610

22.63

574.8

24.750

628.7

21.300

541

SD18, N180, QL200, QL200S

Above info per Schedule 40 drill pipe. Shown are the standard sizes. The Pilot Bit, Ring Bit & Casing Shoe assembly can be customized to customers specifications.

DKI Pass-Thru Casing Advance System

Key Features

Casing Size 

Casing Diameter

Ring Bit Diameter (in)

Hammer Shanks

OD

ID

OD

ID

4                  in

 mm

4.50

114.3

4.03

102.4

4.875

123.8

2.250

57.15

IR3.5, COP 34, COP32, 3015, 

MACH 30/33

5                  in

mm

5.56

141.2

5.05

128.3

5.935

150.8

3.135

79.6

QL4, IR340, SD4, M04, M40, MACH44, T 040

6                  in

mm

6.63

168.4

6.07

154.2

7.016

178.2

4.125

104.8

QL5, IR350R, SD5, M50, MACH50

8                  in

mm

8.63

219.2

7.98

202.7

9.015

229

5.925

150.5

QL6, IR360, SD6, M60, MACH60

10                in

mm

10.75

273

10.02

254.5

11.250

285.8

8.250

209.6

QL8, IR380, SD8, M80, T090, MACH80

12                in

mm

12.75

323.9

11.94

303.3

13.500

342.9

10.050

255.3

QL8, IR380, SD8, SD10,

N100

Above info per Schedule 40 Drill pipe. Shown are the standard sizes. The Pilot Bit, Ring Bit & Casing Shoe assembly can be customized to customers specifications.

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