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“DPF" and “DSPF” Pack-off Flanges

Pack-off flanges, such as the "DPF" drilled pack-off flange and the "DSPF" double studded packoff  flange, are placed in the drilling stack on top of the casing head before the shoe joint is drilled out. This provides the operator with assured control of pressures that can be encountered after the cement has been drilled out, and the annulus exposed to formation pressures. To enable proper drilling stack outlet detail, a spacer flange of equal thickness to the pack-off flange is included in the stack when the casing is run. These pack-off flanges incorporate the "GLS" secondary sealing medium and are equipped with bleed and test ports. Integral bit guides are available in all models. For more versatility, models with replaceable bit guides are available. Commonly used sizes are available on a rental basis.

“DPF” Pack-off Flanges

 

Flange Size

Part Number

Flange Size

Part Number

9" API 2000

01-2600

13 5/8" API 2000

01-2612

9" API 3000

01-2602

13 5/8" API 3000

01-2614

9" API 5000

01-2604

13 5/8" API 5000

01-2616

11" API 2000

01-2606

16 3/4" API 3000

01-2618

11" API 3000

01-2608

16 3/4" API 5000

01-2620

11" API 5000

01-2610

18 3/4" API 5000

01-2622

 

“DSPF” Pack-off Flanges  

 

Bottom Flange

Top Flange

Part Number

9" API 2000

9" API 2000

01-2540

9" API 3000

9" API 3000

01-2542

9" API 5000

9" API 5000

01-2544

11" API 2000

11" API 2000

01-2546

11" API 3000

11" API 3000

01-2548

11" API 5000

11" API 5000

01-2550

13 5/8" API 2000

13 5/8" API 2000

01-2552

13 5/8" API 3000

13 5/8" API 3000

01-2554

13 5/8" API 5000

13 5/8" API 5000

01-2556

16 3/4" API 3000

16 3/4" API 3000

01-2558

16 3/4" API 5000

16 3/4" API 5000

01-2560

18 3/4" API 5000

18 3/4" API 5000

01-2562

20 3/4" API 3000

20 3/4" API 3000

01-2566

21 1/4" API 2000

21 1/4" API 2000

01-2564