Integral-joint tubing
Integral-joint tubing is used
- as drill pipes for running and cementing of liners;
- for installation of cement plugs and drilling in unstable formations.
Integral-joint tubing are made with externally and internally upset tips for threading and can be easily drilled out by the rock drilling bit.
NON-magnetic drill collars
Non-magnetic integral-joint drill collars are used:
- as non-magnetic housings and pipes for downhole telemetric system
- for geophysical surveys inside the drill column with regards to non-magnetic properties of the alloys.
heavy light-alloy tubing WITH INTERNAL END PROTECTOR
Heavy light-alloy tubing with internal end protector is used:
- as intermediary element of BHA to vary the rigidity from frill collars to heavy light-alloy tubing with internal end protector;
- as the damper of longitudinal vibrations with regards to aluminum alloy capacity to absorb and disseminate the elastic vibration energy.
TECHNICAL CHARACTERISTICS OF SPECIAL-PURPOSE TUBING
|
Parameters | Integral-Joint Tubing | Heavy Light-Alloy Tubing | |||||
|---|---|---|---|---|---|---|---|
| without tool-joint | with tool-joint | ||||||
| Integral-Joint Tubing 146х11 | Drill Collars 104х25 | Drill Collars 120х28 | Drill Collars 172х45 | Drill Collars 203х56 | heavy light-alloy tubing with internal end protector 103х16 | heavy light-alloy tubing with internal end protector 147х25 | |
|
Pipe length, mm |
9600 | 9000 | 9000 | 9000 | 6000 | 9300 | 9300 |
|
Pipe body dimensions, mm: • outside diameter • wall thickness • inside diameter |
146 11 124 |
104 25 54 |
120 28 64 |
172 45 82 |
203 56 90 |
103 16 71 |
147 25 97 |
|
Type of thread |
З-147 (5 ½ FH) | З-86 (NC-31) | З-102 (NC-38) | З-133 (NC-50) | З-152 (6 5/8 Reg) | З-102 (NC-38) | З-147 5 ½ FH |
|
Pipe weight in air, kg |
158 | 155 | 200 | 445 | 435 | 135 | 292 |
| Strength parameters – alloy D16Т/1953Т1 | |||||||
|
Tensile load, kN • allowed tensile load (0.8 σт) • limited tensile load |
1222 / 1804 1516 / 2240 |
610 760 |
890 1110 |
1750 2185 |
2430 3040 |
1136/1680 1420/2100 |
2310/3410 2885/4260 |
|
Thread connection life (number of make-ups and break-outs) |
120-140 | 120-140 | 100-120 | 80-100 | 400-500 | 300-400 | |
notes
- The above parameters are given for reference.
- The parameters are calculated on the basis of the minimal yield strength of the aluminum alloy for the main section of the pipe body.
- Upon customer request, the pipes can be manufactured with other typical sizes and modified geometrical parameters and threads.