Great White Positive Displacement Motors

1. Great White Positive Displacement Motors Maintenance Standards & Performance Overview

2. Great White’s Maintenance Standards: General • Every motor that goes below the rotary table is fully serviced and documented. • All components are completely disassembled, cleaned and inspected. • All threaded connections and components that are subject to stress loads are inspected using non-destructive testing methods including magnetic particle and ultrasonic, which are performed by certified 3rd party sources. • All mated connection torques are logged in a data base for future reference. • All Equipment is owned and Serviced at a Great White facility. • Every motor service is thorough!

3. Great White’s Maintenance Standards:Rotors & Stators • All rotors and stators are measured and fitted every service. • Stator measurement temperature is factored in to ensure consistent power section fits. • Rotor plating is closely examined for defects. • Stators are examined over the entire bore covering 360 degrees using a state of the art bore scope. • Lobe profiles are closely examined for wear or damage. • Stator rubber is removed and replaced when: • Accumulative hours reach 500 • Exposed to harsh environments or fluids • Wear limits are exceeded • Damage is found

4. A specially designed Stator Bore Gauge • is used to measure stators within .001”. • Temperature at the time of measurement • is factored in to ensure consistent fits.

5. Stator Bore Scope • Every stator is examined over the entire length with a Bore Scope. • A video file of any damages is kept on file. • Bore Scope allows for a more accurate evaluation of the condition of each Stator.

6. Pitting from High Chlorides or Solids

7. Rotors are measured in six locations over the entire length and averaged to within .001”. • Hard plating is closely examined for wear or damage.

8. Power Section Fitting For Specific Applications • Great White Motors are fitted with even (.000”) to positive or compression fits up to (+.020”) for normal temperatures. Rotors and Stator fits are chosen based on drilling environments. • Negative or Clearance fits up to (-.040) are used for high temperatures, oil based fluids, and air drilling. • A Positive or Compression fit indicates the rotor dimension is larger than the stator dimension and therefore compresses the stator rubber as it rotates in the stator. • A Negative or Clearance fit indicates the stator dimension is larger than rotor dimension and would allow for rubber expansion when exposed to higher temperatures or rubber altering fluids. The net result under these conditions would be a positive fit while operating.

9. Lobe Profile is closely examined for wear patterns. • Proper lobe profiles ensure a good seal and optimum power section performance.

10. Great White’s Maintenance Standards: Bearings • All bearing section components are analyzed and measured using calibrated instruments then accepted or rejected based on strict proven tolerances. • Radial Bearings are matched with “New” clearances every service. • Ball Bearings are replaced every service regardless of condition. • Most standard Bearing Sections consist of around 17 inner & outer bearing races and around 260 bit balls. Compared to some competitors that only run 2 to 4 bearing races. This allows us to distribute the weight on bit and extend the life of the motor considerably. • Mandrels are inspected with Ultrasonic Method along with Magnetic Particle.

11. Great White’s Bearing Sections are simple, robust, and made of the highest quality materials available. • There are no rubber seals or components in the bearing section therefore heat and harsh fluids are a non-factor. • Thrust Bearings are examined and measured every service. • Bit Balls are replaced every service with new balls. • Bearing Design allows for up to 20 lbs/bbl LCM on 4 3/4“ OD & up.

12. Radial Bearings are measured and matched to strict tolerances with every service. • Toughest longest lasting radial bearing material in the industry.

13. Transmission • Rugged and Reliable knuckle joint transmissions are used for directional drilling applications. • Solid one piece flexible shafts are used in vertical drilling applications. • No rubber or heat sensitive components.

14. Great White’s Maintenance Standards Wet Magnetic Particle Inspection • All tubular components are inspected by a non-destructive method. • Magnetism is applied to the components followed by a wet bath of tiny fluorescent magnetic particles. • Components are examined under a special black light looking for any gathering of magnetic particles which indicates fatigue cracking.

15. Fatigue crack in a box connection. • Component is rejected. • Fatigue Crack in a pin connection. • Component is rejected.

16. Ultrasonic Inspection is • performed on all Mandrels. • A fatigue crack indication on the Ultrasound screen. • The fatigue crack is located 3 3/8 inches back from the top mandrel pin connection.

17. All make-up torques are recorded in a data base. • Printable Time vs. Torque graphs available.

18. Custom designed data base for tracking motors and motor components. • All pertinent information on any component readily available.

19. Safety Features Torq Lok Stop Nut Rotor Catch • The Rotor Catch creates a union between External & Internal connections. The Rotor catch allows the motor to stay intact in the event an external connection is cracked. • The End Nut & Stop Nut create a union between External & Internal connections & allows the components of the Bearing Section to stay intact in the event of an External Connection cracking. • Torq Lok & Lok Tite are Features implemented to ensure that a pre-mature loss of torque is not created within the connection while operating. Torq Lok is applied to all external connections & must be heated to 400°F before the connection can be broke. Lok Tite is applied to the transmission as well as the Stop Nut & must be heated to 200°F prior to the connection being broke.

20. 2010 • Introduction of Rotary Steerable and RSS Horizontal capabilities • Introduction of EM capabilities • Expansion of Motor Fleet to include High Temperature & Hard Rubber Power Sections • Additional Horizontal/Directional capabilities to include 36 Kit Boxes • Expansion of Service Coverage Area to include Satellite Yards & Sales Offices for East Texas, Louisiana and Arkansas. • Discounted rates on Combined Service Pricing within Great White Energy. www.greatwhiteenergy.com

21. Hard Rubber Power Sections 8” 7/8 Lobe 4.0 Stage & 6 ¾” 7/8 Lobe 5.7 Stage Power Sections Notice the difference in Torque Values when comparing Standard to Hard Rubber

22. US Sales Contacts West Texas/Barnett Matt Tyler 817-287-8059 mtyler@greatwhitedirectional.com Mid-Continent/North Texas Bryan Ward 405-406-3282 bward@greatwhitedirectional.com Ark-La-Tex Gary Plumlee 903-948-2274 gplumlee@greatwhitedirectional.com Rocky Mountains Carl Weddle 307-472-7400 cweddle@greatwhitedirectional.com New Mexico/West Texas Mark Milner 432-230-6049 Mmilner@greatwhitedirectional.com 2010 Operations Districts: Oklahoma City, Oklahoma - 405-789-3499 Odessa, Texas - 432-563-7962 Casper, Wyoming – 307-472-7400