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Schlumberger Shock Tools

Type of product: Shock sub

Outside Diameter: 5"

Supplier reference: 58401

Original manufacturer: Oilfields Supply Center

Description

The Shock Sub impact and vibration reduction tool is a drillstring component that absorbs and dampens the variable axial dynamic loads produced by the drill bit during routine drilling and milling operations. It is most beneficial when drilling in hard rock, broken formations, and intermittent hard and soft streaks. Reducing the impact loads helps to increase ROP; improve borehole quality; and extend the life of the cutting structure, bearings, connections, and surface equipment—all translating to a lower cost of drilling per foot. Durable construction for the demands of modern drilling: Advances in drilling technology have necessitated the redesign of shock tools to account for new parameters: • Increased hole deviation means that the weight required to activate the previous generation of shock tools is simply not available at the bit. • Drilling motors and MWD tools require drillstring components with a larger ID. With enhanced reliability, better fatigue and corrosion resistance, large ID, significant reduction of vibrations, and the ability to operate with low or high weight on bit (WOB), the Shock Sub impact and vibration reduction tool meets the challenges of modern drilling. It is made of high-quality, hardened steel. Seals isolate internal components from the drilling fluid and can withstand temperatures up to 400 degF. Absorbs shock continuously: The Shock Sub impact and vibration reduction tool does not need to be activated in order to operate. During the drilling or milling operation, it is constantly working. As the cones of a roller cone bit traverse the pattern of “peaks and valleys” created on the bottom of the borehole, the Belleville spring assembly in the sub is compressed or allowed to relax, absorbing the shock load. Additionally, the load is dissipated by the mechanical friction resulting from the movement of the spring stack. The axial movement of a hammer bit produces a similar compression and extension of the springs. These two combined actions isolate the axial loads present during the drilling operation and maintain a near constant WOB when the sub is run within its operational load limits.

Brand

Oilfields Supply Center was founded in Dubai in the early 1960’s by His Highness Shaikh Rashid bin Saeed Al Maktoum, the late Vice President and Prime Minister of the United Arab Emirates and Ruler of Dubai, Oilfields Supply Center is a Government of Dubai company under the Chairmanship of His Highness Sheikh Hamdan Bin Rashid Al Maktoum, Deputy Ruler of Dubai and Minister of Finance and Industry for the U.A.E. It is the first base of its kind in the region and rapidly established itself as a reliable partner for the oil and gas industry, providing a wide range of land-based facilities and operations support in Jebel Ali. Currently the company has three distinct bases in Dubai, they are located in Jebel Ali Free Zone, TechnoPark and Dubai Industrial City, which covers up to 11 million square feet of land. OSC bases also geographically exist in Malaysia, USA, and Saudi Arabia. The company offers industrial facilities to accommodate the company’s operations and to other prime oilfield business partners.

OSC wholly owns several former Schlumberger & Baker Hughes joint ventures, which include:

• Smith International Manufacturing Limited (SIML) – an advanced manufacturing center.

• Smith International Gulf Services (SIGS) – a regional leader in oilfield inspection & repair.

• Christensen Gulf Service LLC (CGS) – provides bespoke servicing of drilling tools.

• MI – Gulf Services LLC (MIGS) – drilling fluids, solids control & waste management services.

In addition to these former JVs, OSC has OEM distribution agreements to sell:

• Hydra-Jar AP® DAH Drilling Jars

• Rhino-Reamer® HEWD tools

• Borrox AP® & Model 60 Roller Reamers

• Dynomax™ Performance Drilling Motors

• HydraQuaker™ DAH Drilling Jars

• Diamant Drilling Services PDC Drill Bits

• ArmRdillo™ Odfjell WBCU tools

• XpresDrill™ Whipstocks

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