The innovative third generation GJS hydraulic system GEN3.X was created by Powell to increase the commercial speed of well construction by running casing strings without preliminary preparation and cleaning of the wellbore.
Powered drilling solution for complicated wells with reinforced worked section.
0 %
Accident rate during well cementing and drilling
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70 %
Increasing the effectiveness of descents
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1 hours
Reamer shoe drilling time
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Powered drilling solution for complicated wells with reinforced worked section.
The main engineering challenge was a significant increase in the shoe rotation speed of more than 3500 rpm to reduce the working displacement while maintaining power and reducing the time for working out complications during running the casing string, as well as the resistance of the power section to the abrasive effect of the drilling fluid.
Specifications
Key differences for GJS* | 400 | 450 | 500 | 550 | 663 | 700 | 763 | 963 | 1075 | 1275 | 1338 |
|---|---|---|---|---|---|---|---|---|---|---|---|
Casing Size, in Casing Size, mm | 4.81 122.2 | 5.87 149.2 | 5.87 149.2 | 5.87 149.2 | 8.25 209.6 | 8.25 209.6 | 9.19 233.3 | 11.31 287.3 | 12.13 308.0 | 14.96 380.0 | 17.25 438.2 |
Blade OD, in
Blade OD, mm | 4.81
122.2 | 5.87
149.2 | 5.87
149.2 | 5.87
149.2 | 8.25
209.6 | 8.25
209.6 | 9.19
233.3 | 11.31
287.3 | 12.13
308.0 | 14.96
380.0 | 17.25
438.2 |
Length, ft
Length, m | 3.28
1.00 | 3.12
0.95 | 3.12
0.95 | 3.18
0.97 | 3.18
0.97 | 3.18
0.97 | 3.28
1.00 | 3.38
1.03 | 3.44
1.05 | 3.18
0.97 | 3.61
1.10 |
Tool mass, ibf
Tool mass, ibf | 64
29 | 137
62 | 152
69 | 172
78 | 216
98 | 216
98 | 267
121 | 364
165 | 397
180 | 701
318 | 756
343 |
Flow Rate, gpm
Flow Rate, ips | 30-190
2-12 | 30-240
2-15 | 30-240
2-15 | 50-320
3-20 | 50-400
3-25 | 50-400
3-25 | 80-560
5-35 | 160-700
10-45 | 160-700
10-45 | 190-1200
12-75 | 190-1200
12-75 |
Pressure Drop, psi
Pressure Drop, kPa | 290 2000 | 300 2100 | 300 2100 | 330 2300 | 430 3000 | 430 3000 | 520 3600 | 680 4700 | 710 4900 | 800 5500 | 830 5700 |
Rotations per minute, rpm | 1330
| 1860
| 1900
| 2200
| 3000
| 3000
| 2910
| 2350
| 2440
| 2600 |
2550 |
Torque, ft.lbs Torque, N.m | 650 880 | 590 800 | 620 840 | 890 1200 | 1330 1800 | 1330 1800 | 1540 2080 | 1880 2550 | 2030 2760 | 2800 3800 | 2910 3950 |
Power, hp Power, kW | 130 100 | 170 130 | 180 140 | 300 230 | 580 430 | 580 430 | 630 460 | 630 460 | 680 500 | 890 650 | 900 660 |
Axial Load, klbs
Axial Load, t | 90 40 | 90 40 | 90 40 | 90 40 | 90 40 | 90 40 | 90 40 | 90 40 | 110 50 | 110 50 | 110 50 |
* Data shown is for water as flushing fluid at a flow rate of 25 liters / second
Powered drilling solution for complicated wells with reinforced worked section.
Running casing strings immediately after drilling a section without reaming the wellbore
Overcoming sludge cushions, clay swelling intervals, caverns and ledges
Rotation
Rotation of both the shoe as a whole and separately only the front part
Sharp side
Sharp side of both the shoe as a whole and separately only the front part
Front design
Front design as a whole and separately only the front part
Frequently asked questions
The rate of descent in the cased hole was 0.5 m / s, in the open hole – up to 0.3 m / s. When undermining a column of wedges after construction, before the start of circulation and walking, the drying speed per vira sometimes exceeded 0.2 m / s, which is unsafe from the point of view of the digital signature and could lead to collapses in the trunk.
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Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry’s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry’s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
