HEAVY WEIGHT DRILL PIPES
COMMAND-SMFI's Heavy Weight Drill Pipe (HWDP) features a tool joint pin and box and a thick-walled tube with a raised central section for wellbore protection of the tube. The central section comes in various designs; slick, spiral, full spiral, or tri-spiral. HWDP can be manufactured as a welded assembly or machined integral from bars. HWDP in the bottom-hole assembly (BHA) provide a gradual transition between drill pipe and drill collars. Its main function is to transfer surface weight-on-bit (WOB) and pipe rotation to the drilling assembly. It also mitigates drill string fatigue and provides directional control of the BHA. In addition, Heavy Weight Drill Pipe can be used to push or force liners/screens down hole during drilling operations.
Applications
Vertical Drilling:
- weight-on-bit and compressive load member
- transitional and fatigue resistant member
- replacement of drill collars
Directional, Horizontal, and Extended Reach Drilling
- weight-on-bit and compressive load member
- differential sticking and drill string lock-up prevention
- directional control of BHA
Remedial Operations
- provide the weight required for milling, under-reaming, and hole-opening operations
Product Range and Features
COMMAND-SMFI's HWDP conforms to API Spec 7-1 (ISO 10424-1) and API Spec 7-2 (ISO 10424-2) .
Standard:
- Pipe body OD from 2-7/8" to 6-5/8"
- API 7.1 & 7.2 specifications
- Welded construction
- Slick central section
- Central upset with two bands each of 3" of hardbanding material to protect casing and prevent wear
- Range 2 and 3 lengths
- API & H90 connections
- Fatigue resistance features (threads cold rolled, API pin stress relief groove, and API box bore-back)
- Phosphate coating on threads and shoulders
- 4" of casing-friendly hardbanding on box and pin, and 2x3” on central upset
- Variety of steel grades: API, Sour Service, NS1, Low Temp
Options:
- Integral construction
- Central section design: Spiral, Full-Spiral or Tri-Spiral
- Longer tool joints, providing a maximum re-cut capability for longer service life
- Internal plastic coating
- NS-1 or DS-1 or customers specifications
- High-performance double shoulder connections upon request
- HB 1” taper
- HB extra length
- Higher toughness specification providing greater safety margins in extreme drilling conditions
- Make and Break
- Other options upon request
Heavy Weight Spiral Drill Pipe (HWSP)
COMMAND-SMFI'sHeavy Weight Spiral Drill Pipe (HWSP) is designed to address differential sticking in vertical and directional drilling environments. Different central upset designs and spiraling configurations are available (spiral, full spiral and tri-spiral) to reduce buckling, risks of differential sticking, improve hole cleaning, and BHA stiffness.
Materials
COMMAND-SMFI provides HWDP in standard, Sour Service, or non-magnetic grades.
Standard heavy weight drill pipe (HWDP) is supplied with AISI 1340 steel or equivalent in the pipe body and AISI 4145H or AISI 4140H-modified tool joints. The welded assembly is the standard offer whereas the integral version is considered optional due to plant availability.
ASCOWELL C steel bar grade has been developed to provide resistance to Sulfide Stress Cracking (SSC) for BHA products improving impact strength and fracture toughness. The resistance to sulfide stress cracking significantly surpasses the resistance of AISI 4145H-modified/4140H-modified steel as shown in NACE test TM0177. The ASCOWELL C HWDP provides superior performance in Sour Service applications and continues to be used around the world.
Integral non-magnetic HWDP made of Amagnit™ 501 is also offered for directional drilling applications.
Standard heavy weight drill pipe (HWDP) is supplied with AISI 1340 steel or equivalent in the pipe body and AISI 4145H or AISI 4140H-modified tool joints. The welded assembly is the standard offer whereas the integral version is considered optional due to plant availability.
ASCOWELL C steel bar grade has been developed to provide resistance to Sulfide Stress Cracking (SSC) for BHA products improving impact strength and fracture toughness. The resistance to sulfide stress cracking significantly surpasses the resistance of AISI 4145H-modified/4140H-modified steel as shown in NACE test TM0177. The ASCOWELL C HWDP provides superior performance in Sour Service applications and continues to be used around the world.
Integral non-magnetic HWDP made of Amagnit™ 501 is also offered for directional drilling applications.
| Application | Material | Size | Yield Strength (Min KSI) | Ultimate Strength (Min KSI) | Hardness Brinell (HB) | Elongation (A%) | Min CHarpy (ft-lbs @+20°C) |
|---|---|---|---|---|---|---|---|
| Integral Standard & NS-1 | AISI 4145H Modified | All | 110 | 140 | 285 to 340 | 13 | 40 |
| Welded Standard (central part) | AISI 1340 Modified | All | 65 | 95 | 235 (max) | 18 | 30 |
| Welded NS-1 (central part) | AISI 4140H Modified | All | 120 | 140 | 285 to 340 | 13 | 40 |
| Welded Standard & NS-1 (tool joint) | AISI 4140H Modified | Above 7 1/4” | 120 | 140 | 285 to 340 | 13 | 40 |
| Standard welded & NS-1 (tool joint) | AISI 4140H Modified | Up to 7 1/4” | 100 | 135 | 285 to 340 | 13 | 40 |
| HWDP-110 HW MS | ASCOWELL C | Above 6 3/4” | 110 | 140 | 285 to 340 | 13 | 0 |
| HWDP-110 HW MS | ASCOWELL C | Up to 6 3/4” | 100 | 135 | 285 to 340 | 13 | 55 |
| HWDP-65 HW MS (tool joint) | ASCOWELL C | Above 6 3/4” | 110 | 140 | 285 to 340 | 13 | 55 |
| HWDP-65 HW MS (tool joint) | ASCOWELL C | Up to 6 3/4” | 100 | 135 | 285 to 340 | 13 | 55 |
| HWDP-65 HW MS (central part) | AISI 1340 Modified | All | 65 | 95 | 235 (max) | 18 | 30 |
Operational Benefits
COMMAND-SMFI has been producing high quality Heavy Weight Drill Pipe for over 60 years and is one of the few global suppliers that can offer both HWDP products manufactured from solid bars or assembled from tubes. Our quality standards, manufacturing processes, internal sourcing of green tubes and tool joints, premium connections and product traceability guarantee product performance and reliability.
COMMAND-SMFI has been producing high quality Heavy Weight Drill Pipe for over 60 years and is one of the few global suppliers that can offer both HWDP products manufactured from solid bars or assembled from tubes. Our quality standards, manufacturing processes, internal sourcing of green tubes and tool joints, premium connections and product traceability guarantee product performance and reliability.
