Schlumberger

Case Study: AxeBlade Bit Helps Shell Set Footage and ROP World Record with a Single Run, Offshore Louisiana

Bit drills 5,353 ft in 24 h with lower torque, improving ROP 100% over field median

Challenge: Reduce torque while drilling a long salt section at a high rate of penetration and building the angle from 0° to 42°.

Solution: Run a PowerDrive Orbit rotary steerable system fitted with a 16-1/2-in X716 AxeBlade ridged diamond element bit optimized for drilling salt at a higher ROP with less downhole torque.

Result:

  • Established Shell as the first deepwater GOM operator to drill 5,353 ft [1,632 m] in a 24-h period.
  • Improved ROP 100% over field median ROP, setting footage and ROP world records.
  • Drilled the entire interval in a single run.

Drilling salt section in single run

Shell planned to drill a 13,674-ft [4,167-m] salt section of a deepwater well in the Gulf of Mexico (GOM). In addition to the required 42° build, the objective was to use a single bit run to achieve a high ROP of 275 ft/h [83.82 m/h] with reduced torque.

Use an AxeBlade bit to reduce torque fluctuation and increase ROP

Shell opted to run a BHA incorporating an AxeBlade bit and RSS. Based on data from the IDEAS integrated dynamic design and analysis platform, the proposed 16-1/2-in AxeBlade bit was designed specifically to drill the targeted salt section at a higher ROP. Analysis showed that the unique geometry of the ridged diamond elements would generate less on-bottom torque, as compared to conventional 16-1/2-in fixed cutter bits.

Drilled 5,353 ft in 24 hours while exceeding expected ROP

The AxeBlade bit and PowerDrive Orbit RSS delivered record-setting footage of 13,674 ft [4,167 m] in 45 drilling hours and an average on-bottom ROP of 305 ft/h [93 m/h]—a 100% improvement from the field median ROP. Moreover, between drilling the entire interval in a single run achieving TD at 25,817 ft [7,869 m], the high ROP enabled Shell to become the first deepwater Gulf of Mexico operator to drill 5,353 ft [1,632 m] in a 24-hour period.

 AxeBlade Bit Helps Shell Set Footage and ROP World Record with a Single Run, Offshore Louisiana

The AxeBlade bit outperformed the bits used on offset wells on several metrics.


Download: AxeBlade Bit Helps Shell Set Footage and ROP World Record with a Single Run, Offshore Louisiana (0.16 MB PDF)

Related services and products

 
 
 
Request More Information

Instant ROP Improvement from One Advanced Bit

AxeBlade Ridged Diamond Element Bit
Field tests of the AxeBlade bit have demonstrated up to 29% improvement in ROP compared with similar bit designs using conventional PDC cutters, saving significant rig time and drilling costs. Visit AxeBlade Ridged Diamond Element Bit page