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You are here: NOV.com > Solutions > Downhole > Drilling Tools > Drilling Agitator
Agitator™ Tool

Agitator (Proven Friction Reduction, Improved Weight Transfer)

The Agitator gently oscillates the Bottom Hole Assembly to significantly improve weight transfer and reduce friction. This improves weight transfer and reduces stick-slip in all modes of drilling, but especially when oriented drilling with a steerable motor. The Agitator provides BHA excitement to improve weight transfer to the bit. Extends the boundaries of extended reach drilling with motors, or enhance efficiency in less complex or rotary applications.

 

 

Significantly Improves Directional Control

  • Gentle oscillation of BHA reduces friction and dramatically improves weight transfer
  • Enhances toolface control & reduces Stick-slip
  • Extends step-out capability
  • Prevents weight stacking and allows excellent tool face control
  • Provides means of sliding at increased ROP and lower weight off hook
  • Allows weight transfer with less drill pipe compression

Downhole Tool Compatibility

  • Fully compatible with all vendor MWD/LWD
  • Field proven above RSS
  • Reduces shocks during drilling
  • Reduced lateral and torsional vibration
  • Optimized steerable assembly rotary efficiency
  • No interference with downhole tool signals
  • Run above or below MWD
  • No impact force to bit or tubulars

Bit Friendly

  • Can be used with roller cone bit or fixed cutter bits
  • No impact forces to damage teeth or bearings
  • Extends PDC life through fine weight transfer; no spudding

Efficiency

  • Increased sliding ROP
  • Reduced time lost in toolface orientation and working BHA
  • Increased ROP in some rotary applications

 

Technical Specifications 
Tool Size (OD)  3⅜"  3¾"  4¾" (High Flow)  6¾"  8"  9⅝" 
Overall Length  6½ ft 12½ ft 9 ft  9 ft 11 ft 12½ ft
Weight  125 lbs  240 lbs  310 lbs  1,000 lbs  1,600 lbs  2,000 lbs 
Recommended Flow Range  90-140 gpm  90-140 gpm  150-270 gpm
(250-330 gpm) 
400-600 gpm  500-1,000 gpm  600-1,100 gpm 
Temp Range  150°C  150°C  150°C  150°C  150°C  150°C 
Operating frequency  26 Hz @ 120 gpm  26 Hz @ 120 gpm  18-19 Hz @ 250 gpm
(16-17 Hz @ 250 gpm) 
16-17 Hz @ 500 gpm  16 Hz @ 900 gpm  12-13 Hz @ 900 gpm 
Operational Pressure Drop Generated  450-700 psi  500-700 psi  550-650 psi  600-700 psi  600-700 psi  500-700 psi 
Max Pull  184,000 lbs  250,000 lbs
*depends on service conn. 
354,000 lbs  693,000 lbs  990,000 lbs  1,260,000 lbs 
Connections  2⅜" Reg pin/box or
2⅞" Reg pin/box 
2⅜" IF, 2⅞" IF,
2⅞" AMOH or
2⅞" Reg 
3½" IF pin/box  4½" IF pin/box  6⅝" REG pin/box  7⅝" Reg box up
7⅝" Reg pin down or
6⅝" Reg pin down 
Shock Tool (OD) 3½"  3½" 4¾" 6¾" 8" 9½"
 Overall Length   5 f  5 ft  7.3 ft  9 ft  122 ft  11 ft
Weight  115 lbs  115 lbs  350 lbs  1,000 lbs  1,600 lbs  2,200 lbs 
Connections  2⅞" Reg pin/box or
2⅜" Reg pin/box 
2⅞" Reg pin/box or
2⅜" Reg pin/box 
3½" IF pin/box  4½" IF pin/box  6⅝" REG pin/box  7⅝" Reg pin/box