AUTOMATED CASING LASER WELDING TONG
Increase the speed of drilling, improve casing quality and reduce the cost of oil well drilling by replacing weak expensive threaded clutch with strong low cost welded joints
Overview
DRILL FASTER AT LOWER COST
ENABLES CASING WHILE DRILLING
- GREATER THAN 30% reduction of metal consumption
- 2X reduction of removed soil rocks
- up to 3X reduction of cement
consumption
TongWELD REPLACES EXPENSIVE & EXPOSED THREADED CLUTCH JOINTS WITH LOWER COST & STRONGER WELDED JOINTS
- Threaded clutch joints are the most vulnerable parts of casing pipes, limiting their structural integrity.
- Clutch joints are weak and require the use of the more expensive grades of thicker steels, increasing the pipe weight and cost.
- Clutch joints protrude and increase the diameter of the well, increasing the amount of removed soil rocks, and the volume
of drilling fluid and cement. - Clutch joints create extra friction against well walls, resulting in complications in the casing advance.
- Clutch joints have less available toque to overcome these complications through pipe rotation.
Automated Casing Drilling
LOWER DRILLING COST
- Utilize SMALLER DRILLING TOOL & WELL DIAMETER
- LESS VOLUME of Soil Rocks, Drilling Fluid & Cement
FASTER CASING ADVANCE
- FEWER COMPLICATIONS in Casing Advance Due to Absence of Protruding Clutch Parts
- MAXIMUM TORQUE AVAILABLE for Casing Rotation
HIGHER CASING QUALITY
- HIGH QUALITY Cementing with Casing Rotation
- HIGH STRENGTH & MORE HERMETIC Casing
Traditional Methods
HIGHER DRILLING COST
- Requires LARGER DRILLING TOOL & WELL DIAMETER
- LARGE VOLUME of Soil Rocks, Drilling Fluid & Cement
SLOWER CASING ADVANCE
- CASING ADVANCE COMPLICATIONS Due to Protruding Clutch Parts
- LESS TORQUE AVAILABLE for Casing Rotation
LOWER CASING QUALITY
- LOW QUALITY Cementing
- WEAKER STRENGTH & LESS HERMETIC Casing
TongWELD enables Casing while Drilling Technology
TongWELD helps overcome casing advance complications
- Replacing traditional threaded clutch casing with laser welded joints reduces friction of casing against well walls and crates fewer complications in casing advance.
- When complications in casing advance still arise, they can be overcome by casing rotation. However, weak clutch connections significantly limit the maximum torque available for rotation.
- Because welded joints are several times stronger than clutch joints, the welded casing can be rotated with much higher torque. Unlike the clutch casing, welded casing can be rotated in both directions.
Enables Faster Casing While Drilling Technology
- Wide adoption of Casing-while-Drilling technology has been hindered by high cost of threaded pipes and weak clutch connections.
- Stronger welded connections enable wide adoption of Casing-while-Drilling
field operation
casing string parameters
| Total information | Laser welding joint | Clutch joint | ||||||
| Length, m | Ratio | Pipe diameter, mm | Thickness, mm | Well diameter, mm | Pipe diameter, mm | Thickness, mm | Well diameter, mm | |
| Conductor pipe | 60 | 1,60 | 244,48 | 7,92 | 393,70 | 323,90 | 9,50 | 295,30 |
| Surface casing | 900 | 1,40 | 177,80 | 9,19 | 293,70 | 244,48 | 8,94 | 212,70 |
| Production casing | 3000 | 1,15 | 139,70 | 6,98 | 220,70 | 177,80 | 9,19 | 155,60 |
| Liner | 1000 | 1,05 | 114,30 | 7,40 | 152,40 | 114,30 | 7,37 | 126,00 |
| Metal consumption, tons | ||||||||
| 125,00 | 185,00 | |||||||
| Soil volume, m³ | ||||||||
| 107,00 | 203,00 | |||||||
| Cement volume, m³ | ||||||||
| 29,00 | 76,00 | |||||||
weld properties
WELDED JOINTS ARE STRONGER and LOWER DRILLING COSTS
| 114 x 7.3 mm Pipe | Threaded Tapered Clutch | Welded Joint |
| Steel Type | Premium High Cost N80 Steel | LOW COST A 516-55 Steel |
| Yield Strength, kN | 1367 | >1600 |
| Maximum Pressure, bar | 623 | 700 |
| Maximum Torque, kNm | 13 | >34 |
| Drilling Tool Diameter, mm | 152 | 126 |
| Pipe Cost, $/km | 36000 | 20000 |
Welded Joint Testing
Torque Test
102 x 6.5 mm Pipe
23.4 kNm Force
NO WELD DAMAGE
Bending Stress Test
NO CRACKS
IN
WELD JOINT
Tensile Stress Test
NO
WELD
DAMAGE
specifications
| Dimensions | 800x1500x1900 mm |
| Weight | 850 kg |
| Ambient temperature | -40 – +45° С at humidity up to 100% |
| Diameter | 102-178 mm or 178-245 mm |
| Thickness | up to 10 mm |
| Deviation from the end plane of welded pipe | <0.1 mm |
| Non-perpendicularity of the welded pipe end in relation to outer surface of pipe | <3 angular minute |
| Explosion protection | default |
| Built-in ultrasonic inspection of welding joints | optional |
| Pipe laser cutting | optional |
| TongWeld Equipment: | -Ytterbium fiber laser YLS-10000 -Chiller water-air LC-170 -Optical head for welding FLW D50 -N2 Bundle -Hydraulic station (for clamps and vertical positioner) -Pneumatic Cabinet -Electrical Cabinet -Remote Controls |
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