Fixedblade Stabilizers compared to Roller Reamers
In two different comparison studies, tested in multiple sections we’ve compared Fixedblade stabilizers to roller reamers.
Location: Saudi Arabia & United States
Saudi Arabia | 12″ Hole section
| No. |
OD |
12 1/4″ Rotary Packed BHA |
| 01 |
12″ |
PDC Bit |
| 02 |
11 7/8″ |
EDP Fixedblade Nearbit Stabilizer w/ Float |
| 03 |
8 1/2″ |
1 x Short (Pony) Drill Collar |
| 04 |
11 7/8″ |
EDP Fixedblade Stabilizer |
| 05 |
8 1/2″ |
1 x Drill Collar |
| 06 |
11 3/4″ |
EDP Switchblade Hybrid |
| 07 |
8 1/2″ |
13 x Drill Collar |
| 08 |
8 1/2″ |
Drilling Jar |
- Improve Drilling performance
- Minimise possible BHA Drift
- Avoid Pinch Point and/or Stuck Pipe incidents
- Minimize Backreaming
- Prevent Introducing any new Risk Factors
- Re-assess BHA Design
- Introduce Advanced EDP Design Tools
- Replace Roller Reamers
- Optimize Tool Spacing
- Optimize Blade Selection
- Optimize Gauge OD Configuration
Results of the comparison
- All set Objectives have been achieved
- Record Section ROP | 12% Higher than Offset
- Higher ROP with Lower WOB & Lower TQ
- Steadier TQ & RPM indicating reduced Torsional Oscillation and/or Stick-slip
- Lower Standpipe Pressure with Comparable Flow Rate
- Enhanced Drilling Efficiency | + 27%
- All tools came out in Gauge with Minimal to No Wear and are re-runable
United States GOM | BHA Comparison
| No. |
26″ Section |
| 1 |
Same bit design |
| 2 |
Same BHA design 3 Roller Reamers |
| No. |
16 1/2″ Section |
| 1 |
Same Bit |
| 2 |
Simular BHA |
| No. |
26″ Section |
| 1 |
Same bit design |
| 2 |
Same BHA design 3 Fixedblade Stabilizers |
| No. |
16 1/2″ Section |
| 1 |
Same Bit |
| 2 |
Simular BHA |
- Evaluate Fixedblade Design across 2-hole sizes
- 2 wells utilized in analysis
- 26″ salt evaluation vs roller reamers
- 16 1/2″ salt and sediment vs roller reamers
Fixedblade Stabilizer vs Roller Reamers Comparison
16 1/2″ Section Comparison
Results of the comparison
Conclusion in general
No damage or wear noted on fixedblade stabilizers post run in either hole section.
26″ Section
The BHA containing the Fixedblade was able to achieve higher WOB and ROP, with notably lower surface torque as opposed to the BHA containing the Roller Reamers.
| 26″ Section – Salt |
BHA Roller Reamers |
BHA Fixedblade |
| Start depth |
4958 |
5251 |
| End depth |
6004 |
5990 |
| Total Footage |
1046 |
739 |
| Hours on Bit |
8.5 |
5.8 |
| Avg On BTM ROP |
123.1 |
127.4 |
16 1/2″ Section
Downhole torque and surface torque equivalent. BHA containing Fixedblade achieved faster ROP, however BHA containing Roller Reamers was control drilled due to vibration.
| 16 1/2″ Section – Salt |
BHA Roller Reamers |
BHA Fixedblade |
| Start depth |
6004 |
5990 |
| End depth |
9591 |
9303 |
| Total Footage |
3587 |
3313 |
| Hours on Bit |
18.3 |
14 |
| Avg On BTM ROP |
196.0 |
236.6 |
| 16 1/2″ Section – Sediment |
BHA Roller Reamers |
BHA Fixedblade |
| Start depth |
9591 |
9303 |
| End depth |
12292 |
12500 |
| Total Footage |
2701 |
3197 |
| Hours on Bit |
15.6 |
16.5 |
| Avg On BTM ROP |
173.1 |
193.8 |
Related Case Studies
Fixedblade Stabilizers help extend bit life in Oman
Oman
Fixedblade Stabilizers offer enhanced stabilization in North Sea
North Sea
Fixedblade Stabilizers used in hexa-combo RSS BHA
North Sea
