The TongWELD tool is specially designed for laser welding of circular non-rotating joints of casing pipes of oil and gas wells in field conditions, with a diameter from 100mm up to 245 mm or more, in a vertical position.
The system is equipped with lasers and heads manufactured by best laser company. The advantage of laser welding technology for casing pipes compared to traditional technology for mechanically joining casing pipes is a significant reduction in the cost of casing strings due to the elimination of conical threads and couplings, a reduction in the metal consumption of the casing string, as well as an increase in the ultimate strength and tightness of the casing string.
The system is equipped with lasers and heads manufactured by best laser company. The advantage of laser welding technology for casing pipes compared to traditional technology for mechanically joining casing pipes is a significant reduction in the cost of casing strings due to the elimination of conical threads and couplings, a reduction in the metal consumption of the casing string, as well as an increase in the ultimate strength and tightness of the casing string.
VALUE FOR INDUSTRY
Existing well construction
70% savings for threads
30% less metal consumption
High casing strength and improved casing integrity
Slim well design (no couplings)
20% total well cost reduction
Drilling with the casing
3 times higher torque for casing rotation
Left and right casing rotation
Easy run in hole - no couplings
70% savings for threads
30% less metal consumption
High casing strength and improved casing integrity
Slim well design (no couplings)
20% total well cost reduction
Drilling with the casing
3 times higher torque for casing rotation
Left and right casing rotation
Easy run in hole - no couplings
VIDEO FROM RIGSITE
Laser Casing Welding video
WELDED VS THREADECASD ING
WELDEDlower well construction costs - lim hole opportunities
maximum torque available for casing rotation
enhanced cement jobs with casing rotation
high strength & better casing integrity
THREADEDhigher well construction cost
larger well diameter & volume drilling fluid & cement
less torque for casing rotation
poor cement jobs with out casing rotation
weaker casing strengthless casing integrity
CASING RUNNING SPEED
Actual casing 4 1/2" casing runnig in hole time log
Running speed 5 hrs for 1000m of 4 1/2" casing
Running speed 5 hrs for 1000m of 4 1/2" casing
LABORATORY TESTS
TORQUE TEST114 x 6.5 mm Pipe
23.4 kNm Force
NO WELD DAMAGE
TENSILE STRESS TESTNO
WELD
DAMAGE
BENDING STRESS TESTNO CRACKS
AT
WELD JOINT
114x6.3mm (41/2") casing | Welded joint | Threaded joint |
Casing Type | LOW COST A 516-55 Steel | High Cost N80 Steel |
Maximum Torque, kN*m | >34 | 13 |
Burst Pressure, bar | 770 | 623 |
Tensile load capacity of casing string, kN | >1600 | 1367 |
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